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Reduced graphene oxide/ZnIn2S4 photocatalyst and preparation method and application thereof

A photocatalyst, znin2s4 technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as limited application, achieve high reaction efficiency, be beneficial to large-scale industrial production, and simple to operate Effect

Inactive Publication Date: 2014-03-05
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the severe photocorrosion of chalcogenides, their wide application is limited.

Method used

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  • Reduced graphene oxide/ZnIn2S4 photocatalyst and preparation method and application thereof
  • Reduced graphene oxide/ZnIn2S4 photocatalyst and preparation method and application thereof
  • Reduced graphene oxide/ZnIn2S4 photocatalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Composite photocatalyst RGO / ZnIn with efficient and stable photocatalytic hydrogen production 2 S 4 preparation of

[0026] First, graphene oxide (GO) was prepared: 5 g graphite and 2.5 g NaNO 3 Stir in 120 mL of concentrated sulfuric acid for 1 h. Slowly add 15 g KMnO 4 , stirred for 5 days. 700 mL H 2 O was added to the reaction system, and then 65 mL of 30% H 2 o 2 . After dilute HCl, H 2 O washing, followed by ultrasonic dispersion in H 2 O, the brown-yellow GO was obtained. Then a certain amount of GO was dispersed in a mixed solvent of ethylene glycol (30ml EG) and N,N-dimethylformamide (30ml DMF), sonicated for 1h, and then ZnCl was added 2 (0.136g), InCl 3 4H 2 O (0.586g) was dissolved, sonicated for 2h, and finally thioacetamide (TAA 0.3g) was added, stirred for 1h, the solution was transferred to a 100mL hydrothermal kettle, reacted at 200°C for 24h, and washed by centrifugation with ethanol and water. Drying, that is, the dark green RGO / ZnIn wit...

Embodiment 2

[0032] Zn 2 S 4 and RGO / ZnIn loaded with different contents of RGO 2 S 4 Comparison of the photocatalytic hydrogen production performance of the composites in the presence of sacrificial agents.

[0033] The resulting composite photocatalyst RGO / ZnIn 2 S 4 The complex is used for photolysis of water to produce hydrogen. Weigh 50mg of the sample and add it to 100ml of aqueous solution containing 2.0ml of lactic acid. After vacuuming the photocatalytic hydrogen production system, turn on the light source for photocatalytic hydrogen production. The amount of photocatalytic hydrogen production was detected by chromatography (Fuli, China, TCD, argon as the carrier gas, and the chromatographic column was 5? molecular sieve). ZnIn of the present invention 2 S 4 and RGO / ZnIn loaded with different contents of RGO 2 S 4 The comparison of the photocatalytic hydrogen production performance of the composite under visible light is as follows: Figure 5 . It can be seen from the f...

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Abstract

The invention discloses a reduced graphene oxide / ZnIn2S4 photocatalyst and a preparation method and application thereof, belonging to the technical field of inorganic chemistry and photocatalysis. The photocatalyst is a semiconductor compound photocatalyst in which reduced graphene oxide is used as an electron transmission body, the separation of electrons from a hole is promoted and sheet ZnIn2S4 is closely packed and paved on the reduced graphene oxide, and the chemical formula is RGO / ZnIn2S4. A high-reducibility sheet RGO / ZnIn2S4 compound is synthesized by a one-step solvothermal method, and the reduction is finished without further photo-reduction or addition of a reducing agent (such as hydrazine). The compound photocatalyst prepared by the method has an efficient photocatalysis hydrogen generation effect, the preparation method is simple and easy to implement, and large-scale industrial popularization is facilitated.

Description

technical field [0001] The invention belongs to the field of inorganic chemistry and photocatalysis, in particular to a reduced graphene oxide / ZnIn 2 S 4 Photocatalyst and its preparation method and application. Background technique [0002] my country's energy production and consumption are dominated by coal and petroleum. However, the products of coal and petroleum combustion are CO 2 , SO 2 , Dust, etc. cause many environmental problems such as "greenhouse effect" and acid rain. On the other hand, according to the general estimates of scientists, by the middle of this century, oil resources will be exhausted, and the energy crisis will sweep the world. Therefore, it is imminent to develop clean and renewable new energy. As a clean, efficient, safe and storable secondary energy, hydrogen energy has great development potential. Some people hailed hydrogen energy as "the cleanest energy in the world". However, the current production of hydrogen energy is mainly obtain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04C01B3/04
CPCY02E60/364Y02E60/36
Inventor 李朝晖叶琳
Owner FUZHOU UNIV
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