Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Preparation method of MoP-Zn3In2S6 composite nano material

A composite nanomaterial, mop-zn3in2s6 technology, which is applied in the field of nanomaterial preparation and photocatalysis, can solve the problems of thermodynamic difficulty in photo-splitting water for hydrogen production, low photo-generated electron-hole separation efficiency of photocatalyst, etc., and achieves improved photocatalytic performance, The effect of high yield and mild reaction conditions

Active Publication Date: 2019-05-31
江西新节氢能源科技有限公司
View PDF10 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of this paper is to optimize the preparation conditions of ZIS6 and provide a preparation method of a new type of non-noble metal visible light responsive nanocomposite MoP / ZIS6, and give its application in the field of photocatalysis. The problem to be solved is the optimal preparation conditions of ZIS6 and Low efficiency of photogenerated electron-hole separation and difficult thermodynamics of hydrogen production from photolysis of water have been reported for ZIS6 photocatalyst

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of MoP-Zn3In2S6 composite nano material
  • Preparation method of MoP-Zn3In2S6 composite nano material
  • Preparation method of MoP-Zn3In2S6 composite nano material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The present embodiment prepares ZIS6 nano material according to the following steps:

[0043] Step 1, weigh 2mmolInCl 3 4H 2 O, 3 mmol ZnSO 4 ·7H 2 O, 0.65g of cetyltrimethylammonium bromide (CTAB) and 12 mmol of thioacetamide (TAA) in a 100mL polytetrafluoroethylene cup, add 70mL of deionized water as a solvent, stir and dissolve to form a mixed solution;

[0044] Step 2, put the polytetrafluoroethylene cup in step 1 into the steel-jacketed kettle to seal and keep it at 160°C for 12 hours. After the reaction is completed, cool it down to room temperature naturally, and wash the obtained precipitate alternately with deionized water and absolute ethanol Several times, the final product was vacuum-dried at 60 °C for 10 h in ZIS6.

[0045] Such as figure 1 As shown, the XRD spectrum of ZIS6 prepared in this example is consistent with the hexagonal phase of pure ZIS6 (a = b = 3.85 Å, c = 21.79 Å, JCPDS No. 24-1453). The peaks with 2θ values ​​of 20.3, 27.6, 28.8, 47.1...

Embodiment 2

[0049] The sulfur source used in step 1 was adjusted to L-cysteine, and the other steps were the same as in Example 1.

[0050] Such as figure 2 As shown, the ZIS6 synthesized by adding 12 mmol of L-cysteine ​​is also a pure ZIS6 hexagonal phase.

[0051] Compared to ZIS6 synthesized by adding 12 mmol of TAA, L-cysteine ​​decreased the (102) / (100) facet ratio.

[0052] It can be seen that the adjustment of the (102) and (100) crystal planes of ZIS6 can also be achieved by adjusting the sulfur source.

[0053] Change the amount of L-cysteine ​​added, as the amount of L-cysteine ​​increases from 7 to 21mmol, the obtained samples are all pure hexagonal ZIS6, and with the increase of the amount of L-cysteine The (110) crystal plane diffraction peak of ZIS6 is weakened. It can be seen that the increase of the amount of L-cysteine ​​is not conducive to the formation of ZIS6 (110) crystal face.

Embodiment 3

[0055] The sulfur source used in step 1 is adjusted to thiourea, and other steps are the same as in Example 1.

[0056] Such as image 3 As shown, when the sulfur source is thiourea, the addition amount from 7-21mmol can not get the pure phase of ZIS6, but the mixed phase of ZIS6 and ZnIn2S4.

[0057] The addition amount greater than 21mmol can not obtain ZIS6 with complete structure, what embodiment 1 and embodiment 2 obtain is pure ZIS6 hexagonal phase; And what this example obtains is mixed phase, find after activity comparison, the photocatalytic decomposition of formic acid of mixed phase produces Hydrogen activity is poor.

[0058] Among them, the peaks with 2θ values ​​of 20.3, 27.6, 28.8, 47.1 and 56.5 degrees correspond to the (005), (100), (102), (110) and (200) crystal planes of ZIS6; the 2θ values ​​are 22.4, 31.8, The peaks at 39.1, 45.7, 47.5, 51.3, 56.6 and 70.7 degrees correspond to the (006), (105), (108), (010), (112), (012), (203) and (017) crystals of ZnI...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a MoP-Zn3In2S6 composite nano material. The method comprises the following steps of: synthesizing a monomer Zn3In2S6 with high activity by optimizing preparation conditions of Zn3In2S6, and then constructing a non-noble metal visible light response nano composite material MoP-Zn3In2S6 to further improve the photo-induced electron-hole separation efficiency, wherein the non-noble metal visible light response nano composite material MoP-Zn3In2S6 is constructed by uniformly loading noncrystalline amorphous MoP on the surface of a three-dimensional spherical Zn3In2S6 hierarchical structure assembled by two-dimensional nano sheets.The preparation method has the advantages of simple and convenient steps, mild reaction conditions and high yield; thepreparation conditions of the Zn3In2S6 are optimized, and the stability and the photo-induced electron-hole separation efficiency of the Zn3In2S6 are improved by uniformly loading a non-noble metal MoPcocatalyst. The high stability of noncrystallineMoP not only can effectively protect aprimary catalyst Zn3In2S6, but also can realize the effective photo-induced electron-hole separation of Zn3In2S6,and obviously improves the photocatalytic performance of the Zn3In2S6.

Description

technical field [0001] The present invention relates to a kind of MoP-Zn 3 In 2 S 6 The invention discloses a method for preparing composite nanomaterials, belonging to the technical fields of nanomaterial preparation and photocatalysis. Background technique [0002] Facing increasingly severe energy and environmental problems. Hydrogen only produces water in combustion or fuel cells, and the energy released by hydrogen combustion is much higher than that of traditional fossil fuels. It is recognized as a clean, green and efficient new generation of energy. Photocatalytic water splitting to produce hydrogen, that is, the use of inexhaustible solar energy to stimulate catalysts to generate photogenerated electrons to reduce water or protons to generate hydrogen, and directly convert solar energy into hydrogen energy, is an important way to fundamentally solve energy and environmental problems. And has received extensive attention from many disciplines in the world. The d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J27/19B01J35/08C01B3/22
Inventor 孟苏刚吴惠惠段世祥付先亮陈士夫
Owner 江西新节氢能源科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com