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One-dimensional nanometer photocatalyst as well as preparation method and application thereof

A nano-photocatalyst and catalyst technology, which is applied in the field of photocatalytic materials, can solve the problems of in-depth research on unfavorable catalyst structure regulation of structural relations and high temperature, and achieve high-efficiency photo-splitting water hydrogen production performance, simple preparation method, and high stability. Effect

Inactive Publication Date: 2014-02-12
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

Researchers from Dalian Institute of Chemical Physics prepared CdS / MoS using high-temperature sintering technology 2 Composite hydrogen production photocatalyst, but the preparation method is high temperature, which is not conducive to the in-depth study of the structure regulation of the catalyst and its structure-property relationship
Exploitation of atomically thick layered MoS 2 The study of one-dimensional composite nanostructured photocatalysts with greatly improved hydrogen production efficiency has not been reported

Method used

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  • One-dimensional nanometer photocatalyst as well as preparation method and application thereof
  • One-dimensional nanometer photocatalyst as well as preparation method and application thereof
  • One-dimensional nanometer photocatalyst as well as preparation method and application thereof

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Embodiment 1

[0040] CdS:MoS 2 Preparation of Composite Nanophotocatalyst

[0041] (1) MoS 2 Preparation of the precursor ammonium tetrathiomolybdate (ATTM): Dissolve 0.05 mol of ammonium molybdate in 300 mL of concentrated ammonia water to prepare a saturated solution; take 21.0 mL of the saturated solution into a three-necked flask, and add 70.0 mL of ammonium sulfide solution. The reaction was carried out at 80 °C for 1 h under magnetic stirring. Cool naturally to room temperature, add ethanol to crystallize for 3 h to obtain MoS 2 Precursor ATTM.

[0042] (2) CdS precursor Cd(S 2 CNEt 2 ) 2 Preparation: 3.0805 g cadmium nitrate (Cd(NO 3 ) 2 ?4H 2 O) and 4.8094 g copper reagent (C 5 h 10 NS 2 Na?3H 2 O) Dissolve in 40 mL and 30 mL of water, then slowly add the copper reagent aqueous solution to the Cd(NO 3 ) 2 In aqueous solution, the CdS precursor Cd(S 2 CNEt 2 ) 2 .

[0043] (3) Preparation of CdS nanorods: 35 mL of ethylenediamine was added to a 50 mL autoclave, and ...

Embodiment 2

[0052] (1) MoS 2 Preparation of the precursor ammonium tetrathiomolybdate (ATTM): Dissolve 0.05 mol of ammonium molybdate in 300 mL of concentrated ammonia water to prepare a saturated solution; take 21.0 mL of the saturated solution into a three-necked flask, and add 70.0 mL of ammonium sulfide solution. The reaction was carried out at 80 °C for 1 h under magnetic stirring. Cool naturally to room temperature, add ethanol to crystallize for 3 h to obtain MoS 2 Precursor ATTM.

[0053] (2) CdS precursor Cd(S 2 CNEt 2 ) 2 Preparation: 3.0805 g cadmium nitrate (Cd(NO 3 ) 2 ?4H 2 O) and 4.8094 g copper reagent (C 5 h 10 NS 2 Na?3H 2 O) Dissolve in 40 mL and 30 mL of water, then slowly add the copper reagent aqueous solution to the Cd(NO 3 ) 2 In aqueous solution, the CdS precursor Cd(S 2 CNEt 2 ) 2 .

[0054] (3) Preparation of CdS nanorods: 35 mL of ethylenediamine was added to a 50 mL autoclave, and then 0.9872 g of Cd(S 2 CNEt 2 ) 2 , and reacted at 180 °C ...

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Abstract

The invention provides a one-dimensional nanometer photocatalyst as well as a preparation method and application thereof. The photocatalyst adopts a one-dimensional CdS nanometer rod structure modified by atom layer thickness MoS2; the formula is CdS: MoS2. The simple polylol pressurizing technology is adopted to realize the synthesis of the CdS: MoS2 composite nanometer photocatalyst; firstly, CdS nanometer rods with uniform size and regular morphology are synthesized in an ethanediamine system; then the polylol pressurizing reduction technology is adopted to decompose ATTM in situ on CdS to obtain the one-dimensional CdS: MoS2 composite nanometer photocatalyst. The catalyst has the solar photocatalytic water hydrogen preparation performance, can largely improve the efficiency of hydrogen production by using sunlight, and is suitable for the field of new energy development.

Description

[0001] technical field [0002] The invention belongs to the technical field of photocatalytic materials, in particular, it relates to a CdS:MoS applied to photolysis of water to produce hydrogen 2 One-dimensional composite nano photocatalyst and its preparation method and application. Background technique [0003] Human activities have made the environmental problems caused by energy consumption increasingly prominent. Resources such as oil and natural gas can only last for a few decades, and the development of clean and efficient new energy technologies is imminent. Photocatalysis has become an ideal clean energy production technology due to its deep reaction at room temperature and the ability to directly use solar energy as a light source to drive. Since Professor Fujishima and Honda used titanium dioxide electrodes to decompose water to generate hydrogen and oxygen under ultraviolet light in 1972, photocatalytic technology has attracted widespread attention of scientis...

Claims

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Application Information

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IPC IPC(8): B01J27/04C01B3/04
CPCY02E60/364Y02E60/36
Inventor 安长华李金全王淑涛张钦辉张军
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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