Preparation method and application of composite photocatalyst formed by Co3S4 derived from ZIF-67 and ZnIn2S4

A technology of ZIF-67 and catalyst, which is applied in the field of preparation of composite photocatalysts, can solve problems such as limiting practical applications, and achieve the effects of reducing catalytic costs, broad application prospects, and improving catalytic efficiency

Active Publication Date: 2020-10-02
SHANGHAI UNIV
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Problems solved by technology

But since ZnIn 2 S 4 Photogenerated carriers are easy to recombine, which limits their practical application in the field of photolysis of water for hydrogen production

Method used

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  • Preparation method and application of composite photocatalyst formed by Co3S4 derived from ZIF-67 and ZnIn2S4
  • Preparation method and application of composite photocatalyst formed by Co3S4 derived from ZIF-67 and ZnIn2S4
  • Preparation method and application of composite photocatalyst formed by Co3S4 derived from ZIF-67 and ZnIn2S4

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Embodiment 1

[0029] A ZIF-67 derived Co 3 S 4 with ZnIn 2 S 4 The preparation method of the composite photocatalyst that forms comprises the following steps:

[0030] a. Weigh 3.48g of cobalt nitrate hexahydrate and dissolve it in 60mL of methanol, weigh 7.88g of 2-methylimidazole and dissolve it in 60mL of methanol, pour the methanol solution containing 2-methylimidazole into the solution containing cobalt nitrate hexahydrate methanol solution and vigorously stirred for 1 minute, and stood at room temperature for 24 hours. The obtained purple solid product was repeatedly washed with ethanol 4 times, and dried in a vacuum oven at 60°C for 12 hours;

[0031] b Weigh 0.08g of ZIF-67 and add 20mL of ethanol, ultrasonic 20min; then weigh 0.12g of thioacetamide and dissolve it in 20mL of ethanol, add the ethanol solution containing thioacetamide to the solution containing ZIF-67 Ethanol solution, ultrasonic for 10 minutes; Pour the ultrasonically mixed solution into a reaction kettle, and c...

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Abstract

The invention discloses a preparation method and an application of a composite photocatalyst formed by ZIF-67 derived Co3S4 and ZnIn2S4. The preparation method comprises the following steps: a, weighing cobalt nitrate hexahydrate and 2-methylimidazole, respectively dissolving the cobalt nitrate hexahydrate and the 2-methylimidazole in methanol, uniformly mixing the obtained two solutions, and washing and drying the obtained product; b, weighing ZIF-67 and thioacetamide, respectively dissolving ZIF-67 and thioacetamide in ethanol, uniformly mixing the two obtained solutions, carrying out ultrasonic treatment, pouring the reactant into a reaction kettle, carrying out a reaction at a high temperature, washing the obtained product, and drying and grinding the product; c, weighing the empty Co3S4 in the step b, and adding deionized water; adding Zn(NO3)2.6H2O, In(NO3)3.4.5H2O and thioacetamide, and carrying out a reaction at a high temperature; washing and drying the product and grinding the prodcut into powder. The Co3S4 and ZnIn2S4 prepared by the method are used for hydrogen production by photolysis of water, so that the catalytic cost is reduced, and the catalytic efficiency is improved.

Description

technical field [0001] The invention relates to the field of photocatalysts, in particular to a ZIF-67 derived Co 3 S 4 with ZnIn 2 S 4 The preparation method and application of the formed composite photocatalyst. Background technique [0002] Metal sulfides (eg, Co 3 S 4 , ZnIn 2 S 4 ) have attracted attention in hydrophotolysis due to their unique electronic and optical properties. In particular, metal sulfide semiconductors with proper energy band structures can effectively accelerate the separation and transfer of photoexcited charges due to the potential gradient between heterointerfaces. At the same time, the hybrid photocatalyst can also improve the stability and light absorption of the material. These advantages can enable heterostructures with enhanced photocatalytic performance. In addition to the control of chemical composition, the realization of efficient photocatalytic reactions also depends on the fine design of the catalyst structure. [0003] Zn ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/043B01J37/08C01B3/04
CPCB01J27/043B01J35/004B01J37/086C01B3/042Y02E60/36
Inventor 陈文倩唐量王甘雨张少美吴明红
Owner SHANGHAI UNIV
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