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Preparation method of indium tin sulfide visible-light-induced photocatalyst and visible-light-induced catalytic performance application of indium tin sulfide visible-light-induced photocatalyst

A technology of indium tin sulfide and visible light, which is applied in the direction of oxidative preparation of carbonyl compounds, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of unsatisfactory catalyst effects, achieve high peak intensity, simple process, and good stability Effect

Pending Publication Date: 2020-06-09
ZHEJIANG SHUREN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the currently prepared SnIn 4 S 8 Photocatalysts mainly improve their photocatalytic performance by means of heterojunction composite, metal (noble metal) loading, and carbide composite; however, the effect of these catalysts is not ideal, so it is necessary to develop an effective method to prepare a SnIn 4 S 8 Photocatalyst; quantum dot homojunction photocatalyst is an effective method, but there is no suitable method to prepare quantum dot modified SnIn with superior performance 4 S 8 catalyst of light

Method used

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  • Preparation method of indium tin sulfide visible-light-induced photocatalyst and visible-light-induced catalytic performance application of indium tin sulfide visible-light-induced photocatalyst
  • Preparation method of indium tin sulfide visible-light-induced photocatalyst and visible-light-induced catalytic performance application of indium tin sulfide visible-light-induced photocatalyst
  • Preparation method of indium tin sulfide visible-light-induced photocatalyst and visible-light-induced catalytic performance application of indium tin sulfide visible-light-induced photocatalyst

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Experimental program
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Effect test

Embodiment 1

[0021] Weigh 1.5mmol of tin tetrachloride pentahydrate and 4mmol of indium trichloride, then dissolve them in 60ml of deionized water, then weigh 8mmol of sulfur source thioacetamide and add them to the above-mentioned uniformly stirred aqueous solution, and adjust the pH value to 3. Continue to stir for 2h. The homogeneously stirred solution was transferred to a hydrothermal reactor, and reacted in an oven at 140° C. for 12 hours. Naturally cooled to room temperature, the obtained precipitate was washed three times with deionized water and absolute ethanol, and then vacuum-dried at 60° C. for 10 h to obtain an orange powder sample.

[0022] Embodiment 1 obtains indium tin sulfide (SnIn 4 S 8 ) photocatalyst, its XRD spectrum such as figure 1 Shown; SnIn 4 S 8 The diffraction characteristic peaks all appear, and are consistent with the JCPDS No.42-1305. card, indicating that a SnIn with a better crystal phase has been obtained 4 S 8 .

[0023] The SnIn of this embodime...

Embodiment 2

[0025] Weigh 1.5mmol of tin tetrachloride pentahydrate and 4mmol of indium trichloride, then dissolve them in 60ml of deionized water, then weigh 8mmol of thiourea and add it to the above-mentioned uniformly stirred aqueous solution, adjust the pH value to 5, and continue stirring 2h. The homogeneously stirred solution was transferred to a hydrothermal reaction kettle, and reacted in an oven at 160° C. for 10 h. Naturally cooled to room temperature, the obtained precipitate was washed four times with deionized water and absolute ethanol, and then vacuum-dried at 60° C. for 10 h to obtain an orange powder sample. Its XRD pattern is also consistent with figure 1 same.

[0026] Indium tin sulfide (SnIn) of the embodiment of the present invention 4 S 8 ) carried out the experiment that benzyl alcohol is catalyzed oxidation to formaldehyde under visible light, the result is as follows figure 2 Shown: the selectivity of benzaldehyde in reaction 10h is 99%, and the conversion r...

Embodiment 3

[0028] Weigh 1.5mmol of tin tetrachloride pentahydrate and 4mmol of indium trichloride, then dissolve them in 60ml of deionized water, then weigh 8mmol of L-cysteine ​​and add them to the above-mentioned uniformly stirred aqueous solution, and adjust the pH value to 3. Continue to stir for 2h. The homogeneously stirred solution above was transferred to a hydrothermal reactor, and reacted in an oven at 180° C. for 10 h. Naturally cooled to room temperature, the obtained precipitate was washed three times with deionized water and absolute ethanol, and then vacuum-dried at 60° C. for 10 h to obtain an orange powder sample. Its XRD pattern is also consistent with figure 1 same.

[0029] The SnIn of the embodiment of the present invention 4 S 8 Carried out the experiment that benzyl alcohol is catalyzed oxidation to benzaldehyde under visible light, the result is as follows figure 2 Shown: the selectivity of benzaldehyde in reaction 10h is 99%, and the conversion rate of benz...

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Abstract

The invention relates to the technical field of material preparation and photocatalysis. The technical scheme comprises that a preparation method of an indium tin sulfide visible-light-induced photocatalyst comprises the following steps: (1) weighing stannic chloride pentahydrate and indium trichloride, dissolving stannic chloride pentahydrate and indium trichloride in a proper amount of deionizedwater, then weighing any one reactant of three sulfur sources, namely thioacetamide, thiourea or L-cysteine, adding the reactant into the uniformly stirred aqueous solution, adjusting the pH value to1-13, and continuously stirring for 2 h, wherein the molar ratio of tin tetrachloride pentahydrate to indium trichloride to the reactant is 1.5:4:8; (2) transferring the uniformly stirred solution into a hydrothermal reaction kettle, and carrying out a reaction for 10-12 h in an oven at the temperature of 140-180 DEG C; and naturally cooling to room temperature to obtain precipitates, respectively washing the precipitates with deionized water and absolute ethyl alcohol for multiple times, and carrying out vacuum drying at the temperature of 60 DEG C for 10 h to obtain an orange powder sample.The preparation method is simple in steps and low in cost.

Description

technical field [0001] The invention relates to the technical fields of material preparation and photocatalysis. Specifically related to an indium tin sulfide (SnIn 4 S 8 ) Photocatalyst preparation method and its application in the reaction of benzyl alcohol oxidation to benzyl alcohol. Background technique [0002] With the increasing awareness of environmental protection and the increasingly tense energy crisis. It will be possible for clean energy to replace traditional energy in the future, and solar energy is a renewable and clean energy. Therefore, making full use of solar energy provides a necessary expansion for human production activities. Since TiO 2 With the birth of photocatalysts, photocatalytic technology and applications have been developed rapidly, such as photocatalytic decomposition of aquatic H 2 , photodegradation of organic pollutants, photocatalytic organic synthesis reactions, etc. [0003] The traditional benzyl alcohol oxidation process is ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04C07C47/54C07C45/29C01G19/00
CPCB01J27/04C07C45/29C01G19/006C01P2002/72B01J35/39C07C47/54
Inventor 乔军蔡冕辉余作龙
Owner ZHEJIANG SHUREN UNIV
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