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Preparation method of nickel phosphide/TpPa-2 composite material and hydrogen production method by photolyzing water

A composite material, tppa-2 technology, applied in organic compound/hydride/coordination complex catalysts, hydrogen/syngas production, chemical/physical processes, etc., can solve the problem of low efficiency of photo-splitting water for hydrogen production, etc. To achieve the effect of improving the performance of photo-splitting water for hydrogen production

Inactive Publication Date: 2019-08-16
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the efficiency of existing materials for photolysis of water to produce hydrogen is not high under the condition of no precious metals, and to provide a Ni 2 The preparation method of P / TpPa-2 composite material

Method used

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  • Preparation method of nickel phosphide/TpPa-2 composite material and hydrogen production method by photolyzing water
  • Preparation method of nickel phosphide/TpPa-2 composite material and hydrogen production method by photolyzing water
  • Preparation method of nickel phosphide/TpPa-2 composite material and hydrogen production method by photolyzing water

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specific Embodiment approach 1

[0018] Specific embodiment one: a kind of Ni of this embodiment 2 The preparation of P / TpPa-2 material is finished according to the following steps:

[0019] Step 1, preparation of TpPa-2;

[0020] Step two, Ni 2 Preparation of P / TpPa-2: TpPa-2 (60mg) and NiCl 2 ·6H 2 O (1.98mg), NaH 2 PO 2 ·H 2 O (9.9mg) was placed in a mortar evenly, then transferred to a magnetic state, heated to 200°C in a tube furnace under a nitrogen atmosphere (the heating rate was 5°C / min) and kept for 1h, and washed several times by centrifugation with water and ethanol , dried in an oven at 80°C for 10 h to obtain Ni 2 P / TpPa-2 (mass ratio 1:100) composite material;

specific Embodiment approach 2

[0021] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the NiCl described in step two 2 ·6H 2 The mass of O is 6 mg, NaH 2 PO 2 ·H 2 The mass of O is 30 mg, and other steps and parameters are the same as those in Embodiment 1. get Ni 2 P / TpPa-2 (mass ratio 3:100) composite material;

specific Embodiment approach 3

[0022] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the NiCl described in step three 2 ·6H 2 The mass of O is 10 mg, NaH 2 PO 2 ·H 2 The mass of O is 50 mg, and other steps and parameters are the same as those in Embodiment 1 or 2. get Ni 2 P / TpPa-2 (mass ratio 5:100) composite material;

[0023] Carry out following test for verifying beneficial effect of the present invention:

[0024] To examine Ni 2 P / TpPa-2 material catalytic decomposition of water hydrogen production effect, according to the following method to test its visible light photocatalytic hydrogen production performance. The test process is as follows: The photocatalytic hydrogen production experiment was carried out in the photocatalytic activity evaluation online analysis system. Before the reaction started, the cooling circulation system was turned on to ensure that the photocatalytic reaction temperature remained at a constant temperature (4°...

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Abstract

The invention discloses a preparation method of a nickel phosphide / TpPa-2 composite material and a hydrogen production method by photocatalytic decomposition of water, and relates to the method of thenickel phosphide / TpPa-2 composite material and the hydrogen production method by photocatalytic decomposition of water. The invention aims to solve the problem that an existing material for photocatalytic hydrogen production is not high in hydrogen production efficiency under the condition of no noble metal. The preparation method comprises the following steps: (1) preparing TpPa-2; and (2) preparing the Ni2P / TpPa-2 composite material. The preparation process disclosed by the invention is simple and effective, reagent consumption is less, the yield is high, and the photocatalyst provided by the invention can effectively solve the problem of low efficiency of hydrogen production by photolyzing water by TpPa-2. The method is applied to the field of hydrogen production by photolyzing water,and experiments show that the composite material has excellent performance of hydrogen production by photolyzing water, wherein the efficiency of hydrogen production by photolyzing water can reach 2.52 mmol*g<-1>*h<-1 >.

Description

technical field [0001] The invention relates to the preparation of nickel phosphide / TpPa-2 composite material and hydrogen production by photolysis of water. Background technique [0002] For a long time, the rapid consumption of fossil energy has made energy and environmental problems increasingly severe, forcing humans to actively seek solutions. Hydrogen energy is the secondary clean energy with the most development potential in the 21st century. Due to its extremely high specific energy density, high calorific value, and the combustion product is only water, it will not cause any pressure on the environment. Fujishima et al first reported the application of n-type semiconductor titanium dioxide electrode in photoelectrochemical water splitting under ultraviolet light (UV) irradiation, which made people realize the feasibility of using solar photolysis of water to produce hydrogen. People can use solar light energy to carry out chemical conversion of light energy, so as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28C01B3/04
CPCB01J31/28C01B3/042C01B2203/0277B01J35/39Y02E60/36
Inventor 孙晓君高梦遥张凤鸣李长城
Owner HARBIN UNIV OF SCI & TECH
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