A single-walled carbon nanotube-confined monolayer transition metal chalcogenide nanoribbon, its precise preparation method and application

Abstract

This invention discloses a single-walled carbon nanotube-confined monolayer transition metal chalcogenide nanoribbon, its precise preparation method, and its applications. The nanoribbon comprises single-walled carbon nanotubes and transition metal sulfides, selenides, or sulfoselenides attached within the single-walled carbon nanotubes, with the transition metal sulfides, selenides, or sulfoselenides forming a monolayer nanoribbon. The preparation method involves mixing a polyacid containing transition metals with single-walled carbon nanotubes and water to obtain a precursor. Then, the precursor is confined by gas-phase sulfidation or selenization to obtain high-quality monolayer confined transition metal sulfide or selenide nanoribbons. After obtaining the monolayer confined transition metal sulfide or selenide nanoribbons, the nanoribbons are subjected to gas-phase sulfidation (for selenide nanoribbons) or selenization (for sulfide nanoribbons) to obtain high-quality monolayer confined transition metal sulfoselenide nanoribbons. The process is simple, easy to scale up, and provides a foundation for the production of similar nanoribbons.

Description

Technical Field

[0001] This invention relates to a single-walled carbon nanotube-confined monolayer transition metal chalcogenide nanoribbon, its precise preparation method, and its application, belonging to the field of transition metal chalcogenide preparation technology. Background Technology

[0002] Recent studies of one-dimensional transition metal chalcogenides (TMDs) have revealed intriguing physical phenomena, including the quantum spin Hall effect, valley polarization, and superconductivity, suggesting their potential applications in functional devices. Imposing additional confinement on two-dimensional (2D) materials allows for further control over their electronic, optical, and topological properties. However, the synthesis of high-quality one-dimensional monolayer transition metal chalcogenides remains challenging due to the inherent anisotropy of their structure, which predisposes them to two-dimensional growth. Precise synthesis of bimetallic, trimetallic, and high-entropy metal chalcogenide nanoribbons is also not yet feasible due to the varying melting points of different metal or metal oxide precursors. Furthermore, a general strategy for large-scale synthesis presents significant challenges. Summary of the Invention

[0003] The purpose of this invention is to provide a single-walled carbon nanotube-confined monolayer transition metal chalcogenide nanoribbon, its precise preparation method, and its application. High-quality monolayer confined transition metal chalcogenide nanoribbons can be obtained by using gas-phase sulfidation and / or selenization of confined polyacid precursors. The process is simple and easy to scale up, providing a foundation for the production of similar nanoribbons.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A single-walled carbon nanotube confined monolayer transition metal chalcogenide nanoribbon includes a single-walled carbon nanotube and a transition metal sulfide, selenide, or sulfoselenide attached within the single-walled carbon nanotube, wherein the transition metal sulfide, selenide, or sulfoselenide forms a monolayer nanoribbon.

[0006] The above-mentioned method for precisely preparing single-walled carbon nanotube-confined monolayer transition metal chalcogenide nanoribbons includes the following steps:

[0007] S1. The precursor is obtained by mixing polyacids containing transition metals with single-walled carbon nanotubes and water, followed by washing, centrifugation and drying.

[0008] S2. Sulfur powder or selenium powder and precursor are placed in a tube furnace. After the gas in the tube furnace is replaced by a mixture of hydrogen and argon, the sulfur powder or selenium powder and precursor are heated separately. Then, a mixture of hydrogen and argon is continuously introduced to drive the sulfur powder or selenium powder to react with the precursor. After the reaction is completed, the temperature is lowered to obtain single-walled carbon nanotube confined monolayer transition metal sulfide nanoribbons or selenide nanoribbons.

[0009] Alternatively, the precursor can be placed in a tube furnace, and a mixture of hydrogen sulfide and argon can be introduced to replace the gas in the tube furnace. The precursor is then heated, and the mixture of hydrogen sulfide and argon is continuously introduced to carry out the reaction. After the reaction is completed, the temperature is lowered to obtain single-walled carbon nanotube confined monolayer transition metal sulfide nanoribbons.

[0010] Preferably, after obtaining single-walled carbon nanotube-confined monolayer transition metal sulfide nanoribbons, selenium powder and single-walled carbon nanotube-confined monolayer transition metal sulfide nanoribbons are placed in a tube furnace. After the gas in the tube furnace is replaced by a mixture of hydrogen and argon, the selenium powder and single-walled carbon nanotube-confined monolayer transition metal sulfide nanoribbons are heated separately. Then, a mixture of hydrogen and argon is continuously introduced to drive the selenium powder to react with the single-walled carbon nanotube-confined monolayer transition metal sulfide nanoribbons. After the reaction is completed, the temperature is lowered to obtain single-walled carbon nanotube-confined monolayer transition metal sulfoselenide nanoribbons.

[0011] Preferably, after obtaining single-walled carbon nanotube-confined monolayer transition metal selenide nanoribbons, sulfur powder and single-walled carbon nanotube-confined monolayer transition metal selenide nanoribbons are placed in a tube furnace. After the gas in the tube furnace is replaced by a mixture of hydrogen and argon, the sulfur powder and single-walled carbon nanotube-confined monolayer transition metal selenide nanoribbons are heated separately. Then, a mixture of hydrogen and argon is continuously introduced to drive the sulfur powder to react with the single-walled carbon nanotube-confined monolayer transition metal selenide nanoribbons. After the reaction is completed, the temperature is lowered to obtain single-walled carbon nanotube-confined monolayer transition metal sulfose selenide nanoribbons.

[0012] Alternatively, a single-walled carbon nanotube-confined monolayer transition metal selenide nanoribbon can be placed in a tube furnace. After the gas in the tube furnace is replaced by a mixture of hydrogen sulfide and argon, the precursor is heated. Then, the mixture of hydrogen sulfide and argon is continuously introduced to carry out the reaction. After the reaction is completed, the temperature is lowered to obtain a single-walled carbon nanotube-confined monolayer transition metal sulfose selenide nanoribbon.

[0013] Preferably, in step S1, the polyacid is an Anderson type and / or a Keggin type and / or a Dawson type and / or a Weaklysandwich type polyacid.

[0014] Preferably, in step S1, the mass ratio of polyacid to single-walled carbon nanotubes and water is (80-160):(3-8):1.

[0015] Preferably, in step S1, the mixing time is 6-10 days; the drying conditions are 50-70℃.

[0016] Preferably, the hydrogen volume content in the hydrogen and argon mixture is 5-15%, and the hydrogen sulfide volume content in the hydrogen sulfide and argon mixture is 3-8%; the flow rate of the mixture is 20-80 sccm.

[0017] Preferably, the target heating temperature for sulfur powder or selenium powder is 180-320℃, and the target heating temperature for the precursor, single-walled carbon nanotube-confined monolayer transition metal sulfide nanoribbon, and single-walled carbon nanotube-confined monolayer transition metal selenide nanoribbon is 550-800℃, with a heating time of 20-80 min; the reaction time is 1-2 h.

[0018] The above-mentioned single-walled carbon nanotubes confine monolayer transition metal chalcogenide nanoribbons in the fields of photodetectors, photoelectric sensors, and catalysis.

[0019] The beneficial effects of this invention are as follows:

[0020] High-quality monolayer confined transition metal chalcogenide nanoribbons can be obtained by using vapor-phase sulfidation or selenization of confined polyacid precursors. Furthermore, after obtaining monolayer confined transition metal sulfide or selenide nanoribbons, vapor-phase sulfidation (for selenide nanoribbons) or selenization (for sulfide nanoribbons) can be performed to obtain high-quality monolayer confined transition metal chalcogenide (sulfoselenide) nanoribbons. The obtained monolayer nanoribbons have an average width of only about 2.0 nm, showing great promise for applications in photodetectors, photoelectric sensors, and catalysis. Compared to existing chemical vapor deposition methods on substrates, this method can synthesize up to fifty different high-quality confined monolayer transition metal chalcogenide nanoribbons with an average width of only about 2.0 nm, and the process is simple and easy to scale up for production. Attached Figure Description

[0021] Figure 1 Aberration-corrected electron micrograph of the nanoribbons prepared in Example 1;

[0022] Figure 2 The Raman spectrum of the nanoribbons prepared in Example 1;

[0023] Figure 3 The photoelectron spectra of (a) Mo and (b) S of the nanoribbons prepared in Example 1;

[0024] Figure 4 Aberration-corrected electron micrograph of the nanoribbons prepared in Example 2;

[0025] Figure 5 The Raman spectrum of the nanoribbons prepared in Example 2;

[0026] Figure 6 The photoelectron spectra of (a) Mo, (b) W and (c) S of the nanoribbons prepared in Example 2;

[0027] Figure 7 Aberration-corrected electron micrograph of the nanoribbons prepared in Example 3;

[0028] Figure 8 The Raman spectrum of the nanoribbons prepared in Example 3;

[0029] Figure 9 Photoelectron spectra of (a) Mo, (b) W, (c) V and (d) S for nanoribbons prepared in Example 3;

[0030] Figure 10 Aberration-corrected electron micrograph of the nanoribbons prepared in Example 4;

[0031] Figure 11 The Raman spectrum of the nanoribbons prepared in Example 4;

[0032] Figure 12 Photoelectron spectra of (a) Mo, (b) W, (c) V, (d) Co and (e) S of the nanoribbons prepared in Example 4;

[0033] Figure 13 Aberration-corrected electron micrograph of the nanoribbons prepared in Example 5;

[0034] Figure 14 The Raman spectrum of the nanoribbons prepared in Example 5;

[0035] Figure 15 Photoelectron spectra of (a) Mo, (b) W, (c) Co, (d) V, (e) S and (f) Se for the nanoribbons prepared in Example 5;

[0036] Figure 16 Transmission electron microscopy images of stacked nanosheets prepared in Comparative Example 1 at different magnifications: (a) 100 nm scale bar, (b) 50 nm scale bar. Detailed Implementation

[0037] To further illustrate the present invention, the following detailed description, in conjunction with embodiments, describes the confined synthesis of monolayer transition metal chalcogenide nanoribbons using single-walled carbon nanotubes, its precise preparation method, and its applications.

[0038] Example 1: A method for preparing monolayer molybdenum disulfide nanoribbons confined by single-walled carbon nanotubes, comprising the following steps:

[0039] a) Stir 800 mg of polyoxophosmolybdic acid, 50 mg of open-pore single-walled carbon nanotubes and 10 mg of deionized water together for 6 days, wash with water 10 times, centrifuge, and then dry in an oven at 60°C to obtain a uniform powder as a reaction precursor.

[0040] b) Place 1g of sulfur powder and 50mg of the above reaction precursor in a corundum boat and place them in a dual-temperature zone tube furnace, with the sulfur powder located upstream of the gas flow and the reaction precursor located downstream of the gas flow.

[0041] c) A mixture of argon and hydrogen (9:1 ratio) at 60 sccm is introduced into the tube. After 60 min, the temperature is increased so that the sulfur powder and precursor powder reach 200℃ and 800℃ respectively. After reacting for 60 min, heating is stopped, and the product is cooled to room temperature with the furnace under the gas flow condition.

[0042] d) Remove the product obtained in step c, which yields a single-walled carbon nanotube-confined monolayer molybdenum disulfide nanoribbon.

[0043] The prepared monolayer molybdenum disulfide nanoribbons confined by single-walled carbon nanotubes were characterized by spherical aberration electron microscopy. The results are shown in the figure. Figure 1 , Figure 1 These are aberration-corrected electron micrographs of monolayer molybdenum disulfide nanoribbons confined within single-walled carbon nanotubes prepared in Example 1. Figure 1 It can be seen that molybdenum disulfide is a single-layer, one-dimensional nanoribbon structure with an average width of 2.0 nm. The uniform contrast of the material indicates that the material is grown uniformly and without obvious defects. The single-layer nanoribbons and clear boundaries indicate that the material has high crystallinity.

[0044] Figure 2 The image shows the Raman spectrum of a single-layer molybdenum disulfide nanoribbon confined within a single-walled carbon nanotube. The positions of the characteristic peaks confirm that the material is molybdenum disulfide and single-walled carbon nanotubes.

[0045] Figure 3 The photoelectron spectrum is that of a single-walled carbon nanotube-confined monolayer molybdenum disulfide nanoribbon, which is composed of molybdenum and sulfur.

[0046] Example 2: Preparation method of monolayer molybdenum disulfide tungsten nanoribbons confined by single-walled carbon nanotubes. In step a), 800 mg of polyacid phosphomolybdic tungstic acid was used, and the rest was the same as in Example 1. Monolayer molybdenum disulfide tungsten nanoribbons confined by single-walled carbon nanotubes were prepared. The spherical aberration electron microscope image, Raman spectrum, and photoelectron spectrum are shown below. Figure 4 , 5 As shown in Figure 6.

[0047] Figure 4 These are aberration-corrected electron micrographs of monolayer molybdenum disulfide tungsten nanoribbons confined by single-walled carbon nanotubes prepared in Example 2. Figure 4 It can be seen that the molybdenum disulfide tungsten is a single-layer, one-dimensional nanoribbon structure with an average width of 2.0 nm. The material has uniform contrast, and the alternating light and dark colors of tungsten and molybdenum elements indicate that the material grows uniformly and has no obvious defects. The single-layer nanoribbons and clear boundaries indicate that the material has high crystallinity.

[0048] Figure 5 The image shows the Raman spectrum of a single-layer molybdenum disulfide tungsten nanoribbon confined by single-walled carbon nanotubes. The position of the characteristic peaks confirms that the material is molybdenum disulfide tungsten and single-walled carbon nanotubes.

[0049] Figure 6 The photoelectron spectrum is that of a single-walled carbon nanotube-confined monolayer molybdenum disulfide tungsten nanoribbon, which is composed of molybdenum, tungsten and sulfur.

[0050] Example 3: Preparation method of monolayer molybdenum disulfide vanadium disulfide nanoribbons confined by single-walled carbon nanotubes. In step a), 800 mg of polyacid is a mixture of phosphomolybdic acid and phosphotungstic acid in a molar ratio of 2:1. The rest is the same as in Example 1. Monolayer molybdenum disulfide vanadium disulfide nanoribbons confined by single-walled carbon nanotubes were prepared. The spherical aberration electron microscope image, Raman spectrum, and photoelectron spectrum are shown below. Figure 7 , 8 As shown in Figures 9 and 9.

[0051] Figure 7 These are aberration-corrected electron micrographs of monolayer molybdenum disulfide tungsten vanadium nanoribbons confined within single-walled carbon nanotubes prepared in Example 3. Figure 7 It can be seen that the molybdenum tungsten vanadium disulfide is a single-layer, one-dimensional nanoribbon structure with an average width of 2.0 nm. The material has uniform contrast, and the alternating light and dark colors of tungsten, molybdenum and vanadium elements indicate that the material grows uniformly and has no obvious defects. The single-layer nanoribbons and clear boundaries indicate that the material has high crystallinity.

[0052] Figure 8 The image shows the Raman spectrum of a single-layer molybdenum disulfide vanadium-tungsten disulfide nanoribbon confined by single-walled carbon nanotubes. The position of the characteristic peaks confirms that the material is molybdenum disulfide vanadium-tungsten disulfide and single-walled carbon nanotubes.

[0053] Figure 9 The image shows the photoelectron spectrum of a single-layer molybdenum-tungsten-vanadium disulfide nanoribbon confined within a single-walled carbon nanotube. The nanoribbon is composed of molybdenum, tungsten, vanadium, and sulfur.

[0054] Example 4: Preparation method of monolayer molybdenum-tungsten-vanadium-cobalt disulfide nanoribbons confined by single-walled carbon nanotubes. In step a), 1000 mg of polyacid is a mixture of cobalt-phosphorus molybdenum-tungstenic acid and vanadate-phosphorus acid in a molar ratio of 2:1. The rest is the same as in Example 1. Monolayer molybdenum-tungsten-vanadium-cobalt disulfide nanoribbons confined by single-walled carbon nanotubes were prepared. The spherical aberration electron microscope image, Raman spectrum, and photoelectron spectrum are shown below. Figure 10 , 11 As shown in Figures 1 and 12.

[0055] Figure 10 These are aberration-corrected electron micrographs of monolayer molybdenum disulfide, tungsten vanadium vanadium, and cobalt disulfide nanoribbons confined within single-walled carbon nanotubes prepared in Example 4. Figure 1 It can be seen that the molybdenum disulfide, tungsten, vanadium, and cobalt disulfide is a single-layer, one-dimensional nanoribbon structure with an average width of 2.0 nm. The material has uniform contrast, and the alternating light and dark elements of tungsten, molybdenum, vanadium, and cobalt indicate that the material grows uniformly and has no obvious defects. The single-layer nanoribbons and clear boundaries indicate that the material has high crystallinity.

[0056] Figure 11The image shows the Raman spectrum of a single-layer molybdenum disulfide, tungsten vanadium cobalt disulfide nanoribbon confined by single-walled carbon nanotubes. The position of the characteristic peaks confirms that the material is molybdenum disulfide, tungsten vanadium cobalt disulfide, and single-walled carbon nanotubes.

[0057] Figure 12 The photoelectron spectrum is that of a single-walled carbon nanotube-confined monolayer molybdenum-tungsten-vanadium-cobalt disulfide nanoribbon, which is composed of molybdenum, tungsten, vanadium, cobalt and sulfur.

[0058] Example 5: A method for preparing monolayer molybdenum disulfide-tungsten-vanadium-cobalt disulfide nanoribbons confined by single-walled carbon nanotubes, comprising the following steps:

[0059] In step a), 1000 mg of polyacid is a mixture of cobalt molybdenum tungstate and phosphovanadate in a molar ratio of 2:1, and the rest is the same as step a in Example 1;

[0060] Step b) Replace sulfur powder with selenium powder, and the rest is the same as step b in Example 1;

[0061] Step c) The precursor powder reaches 750°C, and the rest is the same as step c in Example 1;

[0062] Step d) Remove the product obtained in step c, which yields molybdenum diselenide, tungsten vanadium, and cobalt diselenide nanoribbons confined within single-walled carbon nanotubes.

[0063] Step e) The precursor in step 1b of Example 1 is replaced with molybdenum diselenide-tungsten-vanadium-cobalt nanoribbons confined by single-walled carbon nanotubes. The remaining steps are the same as in Example 1 to obtain monolayer molybdenum diselenide-tungsten-vanadium-cobalt nanoribbons confined by single-walled carbon nanotubes. The spherical aberration electron microscope images, Raman spectra, and photoelectron spectroscopy spectra of the products are shown below. Figure 13 , 14 As shown in Figure 15.

[0064] Figure 13 These are aberration-corrected electron micrographs of monolayer molybdenum disulfide-tungsten-vanadium-cobalt disulfide nanoribbons confined within single-walled carbon nanotubes prepared in Example 5. Figure 1 It can be seen that the molybdenum disulfide, tungsten, vanadium, and cobalt disulfide is a single-layer, one-dimensional nanoribbon structure with an average width of 2.0 nm. The material has uniform contrast, with tungsten, molybdenum, vanadium, cobalt, and selenium elements alternating between light and dark. Selenides are mainly distributed at the edges of the nanoribbons, while sulfides are mainly distributed in the middle of the nanoribbons, indicating that the material grows uniformly without obvious defects. The single-layer nanoribbons and clear boundaries indicate that the material has high crystallinity.

[0065] Figure 14 The image shows the Raman spectrum of a single-layer molybdenum disulfide, tungsten vanadium, cobalt disulfide nanoribbon confined within a single-walled carbon nanotube. The position of the characteristic peaks confirms that the material is a combination of molybdenum disulfide, tungsten vanadium, cobalt disulfide, and single-walled carbon nanotubes.

[0066] Figure 15The photoelectron spectroscopy of a single-layer molybdenum disulfide-tungsten-vanadium-cobalt nanoribbon confined within a single-walled carbon nanotube is shown. The nanoribbon is composed of molybdenum, tungsten, vanadium, cobalt, sulfur, and selenium.

[0067] As can be seen from the above embodiments, this application has prepared single-layer transition metal chalcogenide nanoribbons confined by single-walled carbon nanotubes using a simple method.

[0068] Comparative Example 1: A method for preparing molybdenum disulfide nanosheets, comprising the following steps:

[0069] a) Place 50 mg of phosphomolybdic acid in a corundum boat and place it in the center of a tube furnace. Introduce 30 sccm of 5% (volume content) hydrogen sulfide and 95% (volume content) argon into the tube. After 60 min, raise the temperature to 800 °C. After reacting for 60 min, stop heating and continue to allow the product to cool down to room temperature with the furnace under aeration.

[0070] b) Remove the product obtained in step a, which yields molybdenum disulfide nanosheets.

[0071] The prepared molybdenum disulfide nanosheets were characterized by transmission electron microscopy, and the results are shown in the figure. Figure 16 , Figure 16 This is a transmission electron microscope (TEM) image of the molybdenum disulfide nanosheets prepared in Comparative Example 1. Figure 16 It can be seen that molybdenum disulfide is composed of multiple layers of stacked sheets.

Claims

1. A single-walled carbon nanotube-confined monolayer transition metal chalcogenide nanoribbon, characterized in that, This includes single-walled carbon nanotubes and transition metal chalcogenide nanoribbons attached within the single-walled carbon nanotubes; The preparation method of single-walled carbon nanotube-confined monolayer transition metal chalcogenide nanoribbons includes the following steps: S1. Mix polyacids containing transition metals with single-walled carbon nanotubes and water in a mass ratio of (80-160):(3-8):1 for 6-10 days, then wash, centrifuge, and dry to obtain a precursor; wherein the polyacid is any one of phosphomolybdic acid, phosphomolybdic tungstic acid, phosphomolybdic vanadate and a mixture of phosphomolybdic vanadate and phosphomolybdic vanadate, or a mixture of phosphomolybdic tungstic acid and phosphomolybdic vanadate. S2. Sulfur powder or selenium powder and precursor are placed in a tube furnace. After the gas in the tube furnace is replaced by a mixture of hydrogen and argon, the sulfur powder or selenium powder and precursor are heated separately. Then, a mixture of hydrogen and argon is continuously introduced to drive the sulfur powder or selenium powder to react with the precursor. After the reaction is completed, the temperature is lowered to obtain single-walled carbon nanotube confined monolayer transition metal sulfide nanoribbons or selenide nanoribbons. Alternatively, the precursor can be placed in a tube furnace, and a mixture of hydrogen sulfide and argon can be introduced to replace the gas in the tube furnace. The precursor is then heated, and the mixture of hydrogen sulfide and argon is continuously introduced to carry out the reaction. After the reaction is completed, the temperature is lowered to obtain single-walled carbon nanotube confined monolayer transition metal sulfide nanoribbons. The hydrogen volume content in the hydrogen and argon mixture is 5-15%, and the hydrogen sulfide volume content in the hydrogen sulfide and argon mixture is 3-8%; the flow rate of the mixture is 20-80 sccm. The target heating temperature for sulfur powder or selenium powder is 180-320℃; the target heating temperature for the precursor is 550-800℃, and the heating time is 20-80 min; the reaction time is 1-2 h.

2. The single-walled carbon nanotube confined monolayer transition metal chalcogenide nanoribbon according to claim 1, characterized in that, After obtaining single-walled carbon nanotube-confined monolayer transition metal sulfide nanoribbons, selenium powder and single-walled carbon nanotube-confined monolayer transition metal sulfide nanoribbons were placed in a tube furnace. The gas inside the tube furnace was replaced with a mixture of hydrogen and argon. The selenium powder and single-walled carbon nanotube-confined monolayer transition metal sulfide nanoribbons were then heated separately. A mixture of hydrogen and argon was then continuously introduced to drive the selenium powder to react with the single-walled carbon nanotube-confined monolayer transition metal sulfide nanoribbons. After the reaction was completed, the temperature was lowered to obtain single-walled carbon nanotube-confined monolayer transition metal sulfide selenide nanoribbons. The hydrogen volume content in the mixture of hydrogen and argon is 5-15%; The target heating temperature for selenium powder is 180-320℃; The target heating temperature for confining monolayer transition metal sulfide nanoribbons within single-walled carbon nanotubes is 550-800℃, with a heating time of 20-80 min and a reaction time of 1-2 h.

3. The single-walled carbon nanotube confined monolayer transition metal chalcogenide nanoribbon according to claim 1, characterized in that, After obtaining single-walled carbon nanotube-confined monolayer transition metal selenide nanoribbons, sulfur powder and single-walled carbon nanotube-confined monolayer transition metal selenide nanoribbons were placed in a tube furnace. The gas inside the tube furnace was replaced with a mixture of hydrogen and argon. The sulfur powder and single-walled carbon nanotube-confined monolayer transition metal selenide nanoribbons were then heated separately. A mixture of hydrogen and argon was then continuously introduced to drive the sulfur powder to react with the single-walled carbon nanotube-confined monolayer transition metal selenide nanoribbons. After the reaction was completed, the temperature was lowered to obtain single-walled carbon nanotube-confined monolayer transition metal sulfose selenide nanoribbons. Alternatively, a single-walled carbon nanotube-confined monolayer transition metal selenide nanoribbon can be placed in a tube furnace. After the gas in the tube furnace is replaced by a mixture of hydrogen sulfide and argon, the single-walled carbon nanotube-confined monolayer transition metal selenide nanoribbon is heated. Then, a mixture of hydrogen sulfide and argon is continuously introduced to carry out the reaction. After the reaction is completed, the temperature is lowered to obtain a single-walled carbon nanotube-confined monolayer transition metal sulfose selenide nanoribbon. The hydrogen volume content in the mixture of hydrogen and argon is 5-15%, and the hydrogen sulfide volume content in the mixture of hydrogen sulfide and argon is 3-8%. The target heating temperature for sulfur powder is 180-320℃; The target heating temperature for confining monolayer transition metal selenide nanoribbons within single-walled carbon nanotubes is 550-800℃, with a heating time of 20-80 min; the reaction time is 1-2 h for both.

4. The single-walled carbon nanotube confined monolayer transition metal chalcogenide nanoribbon according to claim 1, characterized in that, In step S1, the drying conditions are 50-70℃.

5. The single-walled carbon nanotube confined monolayer transition metal chalcogenide nanoribbon according to any one of claims 2-3, characterized in that, The flow rate of the mixed gas is 20-80 sccm.

6. The application of the single-walled carbon nanotubes confining a single layer of transition metal chalcogenide nanoribbons as described in any one of claims 1-4 in the fields of photodetectors, photoelectric sensors, and catalysis.

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