Preparation method and application of ternary layered transition metal chalcogenide

A transition metal chalcogenide, ternary layered technology, applied in molybdenum compounds, nickel compounds, cobalt compounds, etc., can solve the problems of high cost, poor stability, multi-step synthesis, etc., and achieve the effect of low cost

Inactive Publication Date: 2018-08-10
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the catalysts reported at present have long adsorption time, multi-step synthesis, high cost, and poor stability. Therefore, a new simple, green and low-cost synthetic adsorbent method is invented and applied to dye adsorption and photocatalysis. Significant in other fields

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  • Preparation method and application of ternary layered transition metal chalcogenide
  • Preparation method and application of ternary layered transition metal chalcogenide
  • Preparation method and application of ternary layered transition metal chalcogenide

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Effect test

Embodiment 1

[0033] 1) Add 20ml of ammonium sulfide solution with a mass fraction of 16% to 1.5g of ammonium paramolybdate tetrahydrate, stir with a magnetic stirrer for 2.5h, and red gravel-like crystals appear;

[0034] 2) Filter the gravel crystals and wash them repeatedly with absolute ethanol until the filtrate becomes colorless to obtain the precursor;

[0035] 3) Take 4 mmol of the precursor and CoCl respectively 2 ·6H 2 O was dissolved in 80ml of absolute ethanol (10mL) and deionized water (70mL), stirred at room temperature for 3h to obtain a precipitate, left to stand for 2h, filtered, alternately washed with deionized water and ethanol, and centrifuged to dry to obtain Ternary Layered Transition Metal Chalcogenides CoMoS 4 .

[0036] CoMoS prepared above 4 SEM images of the (see figure 1 ) showed obvious needle-like and granular structures. The adsorption performance shows that the CoMoS prepared by the present invention 4 It has high-efficiency adsorption performance for...

Embodiment 2

[0038] 1) Add 20ml of ammonium sulfide solution with a mass fraction of 16% to 1.5g of ammonium paramolybdate tetrahydrate, stir with a magnetic stirrer for 2.5h, and red gravel-like crystals appear;

[0039] 2) Filter the gravel crystals and wash them repeatedly with absolute ethanol until the filtrate becomes colorless to obtain the precursor;

[0040] 3) Take 4 mmol of the precursor and NiCl respectively 2 ·6H 2O was dissolved in 80ml of absolute ethanol (10mL) and deionized water (70mL), stirred at room temperature for 3h to obtain a precipitate, left to stand for 2h, filtered, alternately washed with deionized water and ethanol, and centrifuged to dry to obtain Ternary Layered Transition Metal Chalcogenides NiMoS 4 .

[0041] NiMoS prepared above 4 SEM images of the (see figure 2 ) presents an obvious granular structure. The adsorption performance showed that the adsorption rate of MB in 480S reached 75%.

Embodiment 3

[0043] 1) Add 20ml of ammonium sulfide solution with a mass fraction of 16% to 1.5g of ammonium paramolybdate tetrahydrate, stir with a magnetic stirrer for 2.5h, and red gravel-like crystals appear;

[0044] 2) Filter the gravel crystals and wash them repeatedly with absolute ethanol until the filtrate becomes colorless to obtain the precursor;

[0045] 3) Take 4 mmol of the precursor and CuCl respectively 2 2H 2 O was dissolved in 80ml of absolute ethanol (10mL) and deionized water (70mL), stirred at room temperature for 3h to obtain a precipitate, left to stand for 2h, filtered, alternately washed with deionized water and ethanol, and centrifuged to dry to obtain Ternary Layered Transition Metal Chalcogenides Cu 2 MoS 4 .

[0046] Cu prepared above 2 MoS 4 The SEM images showed obvious block and granular structures. The adsorption properties indicated that the obtained Cu 2 MoS 4 The adsorption rate of RhB reached 76% within 240S, which basically made the solution ...

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Abstract

The invention relates to a preparation method and application of ternary layered transition metal chalcogenide. The ternary layered transition metal chalcogenide has uniform needles and granules on the surface, and the needle diameter and the granular size are 50-150 nm. The ternary layered transition metal chalcogenide is prepared from ammonium tetrathiomolybdate synthesized at room temperature as a precursor in combination with a transition metal compound according to the steps of stirring at room temperature, standing, separating, washing and drying. The prepared ternary layered transitionmetal chalcogenide has high-efficiency, stable and excellent recyclable practical performance in dye adsorption due to characteristics of granule dispersion and multiple gaps, and the maximum saturated adsorption capacity is 679.86 mg / g; and compared with other adsorbents, the ternary layered transition metal chalcogenide has great advantages; and secondly, the ternary layered transition metal chalcogenide has considerable prospects in electrocatalytic hydrogen production, photoelectric conversion, pollutant degradation and the like.

Description

technical field [0001] The invention relates to the preparation and application of a ternary layered transition metal chalcogenide compound. Background technique [0002] Ternary layered transition metal dichalcogenides (TTMSs) have a tetragonal lattice, which is more controllable than binary layered transition metal dichalcogenides (TMDs) that have been the focus of science and industry. Variable, because the metal atomic layer in the middle of the two S atomic layers contains more than one metal element, such an atomic arrangement will have an important impact on its electronic and energy band structures, so the ternary layered transition metal chalcogenides It presents special functions different from those of two-dimensional layered TMD materials. It has been reported that this type of material has considerable prospects in electrocatalytic hydrogen production, photoelectric conversion, and pollutant degradation. [0003] The current research direction of ternary layere...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G51/00C01G53/00C01G39/00B82Y40/00
CPCC01G51/006B82Y40/00C01G39/006C01G53/006C01P2004/03C01P2004/10C01P2004/62C01P2004/64
Inventor 乔秀清胡敏李东升侯东芳刘云凌兰亚乾卜贤辉
Owner CHINA THREE GORGES UNIV
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