Preparation method and application of core-shell structure indium cadmium sulfide@N-titanium dioxide composite photocatalyst

A technology of indium cadmium sulfide and titanium dioxide, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems that Ti-O clusters are not stable, affect the catalytic effect of materials, etc., and meet the preparation conditions Easy to control, simple and easy to prepare, good photocatalytic degradation activity effect

Active Publication Date: 2021-06-25
CHANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The present invention is synthesizing NH 2 -Derivative N-TiO was observed during thermal decomposition of MIL-125 2 , MOF-derived N-TiO 2 Photocatalysts have excellent catalytic effects, but because the Ti-O clusters in N-TiO2 do not have sufficient stability in water, when they are applied in water environments, H 2 O molecules cause certain damage to Ti-O clusters, seriously affecting the catalytic effect of the material

Method used

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  • Preparation method and application of core-shell structure indium cadmium sulfide@N-titanium dioxide composite photocatalyst
  • Preparation method and application of core-shell structure indium cadmium sulfide@N-titanium dioxide composite photocatalyst
  • Preparation method and application of core-shell structure indium cadmium sulfide@N-titanium dioxide composite photocatalyst

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Experimental program
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Effect test

Embodiment 1

[0030] (1) NH 2 - Preparation of MIL-125(Ti): 1.2681 g of 2-aminoterephthalic acid (6 mmol, TCI, 98%) and titanium isopropoxide (3 mmol) were dissolved in DMF (N-N dimethylformamide) (25 ml, DMF) and anhydrous methanol solvent (25ml, CH 3 OH, 99.8%), the mixture was stirred for 30 minutes to obtain a homogeneous mixture, the mixture was transferred to a polytetrafluoroethylene stainless steel autoclave, and kept at 150° C. for 24 h. After the mixture was cooled to room temperature, the yellow NH 2 - MIL-125, rinsed several times with anhydrous methanol and DMF, dried overnight in an oven at 200°C for 6 hours.

[0031] (2) NH 2 - N-TiO derived from MIL-125(Ti) 2 Preparation: the NH obtained in step (1) 2 -MIL-125(Ti) was calcined for 6h at 500°C under a nitrogen atmosphere to obtain N-TiO 2 .

[0032] (3) Preparation of indium cadmium sulfide@N-titanium dioxide composite photocatalyst: N-TiO 2(0.056g) was dispersed in 30ml of water containing cadmium chloride (1mmol) an...

Embodiment 2

[0034] (1) NH 2 - Preparation of MIL-125(Ti): 1.2681 g of 2-aminoterephthalic acid (6 mmol, TCI, 98%) and titanium isopropoxide (3 mmol) were dissolved in DMF (N-N dimethylformamide) (25 ml, DMF) and anhydrous methanol solvent (25ml, CH 3 OH, 99.8%), the mixture was stirred for 30 minutes to obtain a homogeneous mixture, the mixture was transferred to a polytetrafluoroethylene stainless steel autoclave, and kept at 150° C. for 24 h. After the mixture was cooled to room temperature, the yellow NH 2 - MIL-125, rinsed several times with anhydrous methanol and DMF, dried overnight in an oven at 200°C for 6 hours.

[0035] (2) NH 2 - N-TiO derived from MIL-125(Ti) 2 Preparation: the NH obtained in step (1) 2 -MIL-125(Ti) was calcined for 6h at 500°C under a nitrogen atmosphere to obtain N-TiO 2 .

[0036] (3) Preparation of indium cadmium sulfide@N-titanium dioxide composite photocatalyst: N-TiO 2 (0.08g) was dispersed in 30ml of water containing cadmium chloride (1mmol) a...

Embodiment 3

[0038] (1) NH 2 - Preparation of MIL-125(Ti): 1.2681 g of 2-aminoterephthalic acid (6 mmol, TCI, 98%) and titanium isopropoxide (3 mmol) were dissolved in DMF (N-N dimethylformamide) (25 ml, DMF) and anhydrous methanol solvent (25ml, CH 3 OH, 99.8%), the mixture was stirred for 30 minutes to obtain a homogeneous mixture, the mixture was transferred to a polytetrafluoroethylene stainless steel autoclave, and kept at 150° C. for 24 h. After the mixture was cooled to room temperature, the yellow NH 2 - MIL-125, rinsed several times with anhydrous methanol and DMF, dried overnight in an oven at 200°C for 6 hours.

[0039] (2) NH 2 - N-TiO derived from MIL-125(Ti) 2 Preparation: the NH obtained in step (1) 2 -MIL-125(Ti) was calcined for 6h at 500°C under a nitrogen atmosphere to obtain N-TiO 2 .

[0040] (3) Preparation of indium cadmium sulfide@N-titanium dioxide composite photocatalyst: N-TiO 2 (0.096g) was dispersed in 30ml of water containing cadmium chloride (1mmol) ...

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Abstract

The invention belongs to the technical field of photocatalytic materials, and particularly relates to a preparation method of a core-shell structure indium cadmium sulfide@N-titanium dioxide composite photocatalyst. The preparation method comprises the steps: preparing NH2-MIL-125(Ti), preparing N-TiO2 derived from the NH2-MIL-125(Ti), enabling CdIn2S4 to grow in situ along the epitaxy of the N-TiO2 by controlling the reaction time and the addition amount of reactants, forming a CdIn2S4 flower sheet to wrap an N-TiO2 circular plate, and thus obtaining the core-shell structure indium cadmium sulfide@N-titanium dioxide composite photocatalyst having a good photocatalytic degradation effect on rhodamine B organic matters. The preparation method has the beneficial effects that the preparation method is simple and convenient to operate, the preparation conditions are well controlled, and the prepared indium cadmium sulfide@N-titanium dioxide composite photocatalyst has good photocatalytic degradation activity and stability and has a certain application prospect.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic nanomaterials, and relates to a preparation method and application of a core-shell structure indium cadmium sulfide@N-titania composite photocatalyst. Background technique [0002] In recent years, issues related to energy and the environment have attracted more and more attention, and the development of clean and renewable energy is of paramount importance. Clean and renewable technologies such as the production of hydrogen by photocatalytic water splitting using solar energy are continuously being developed. So far, experts and scholars have explored various semiconductor materials, including metal oxides, sulfides, oxynitrides, and metal-free semiconductors, etc. for photocatalytic degradation. Among the various photocatalysts that have been reported, metal sulfides are considered as good candidates for photocatalytic hydrogen production due to their strong absorption in the visible reg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J27/24B01J21/06B01J35/08B01J37/08B01J37/10C02F1/30
CPCB01J27/04B01J27/24B01J21/063B01J35/004B01J35/0013B01J35/08B01J37/086B01J37/10C02F1/30C02F2305/10C02F2101/308Y02P20/133
Inventor 李忠玉周雨婷卢紫薇赵肖寒梁倩周满徐松李霞章
Owner CHANGZHOU UNIV
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