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One adopts ni 2 A method to enhance photocatalysis with p nanocrystals

A nanocrystalline and photocatalytic technology, applied in the field of nanomaterials, can solve problems such as the difficulty of separating hydrogen and oxygen, and achieve a good catalytic effect

Active Publication Date: 2022-04-08
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the powder system, the catalyst is put into water, and hydrogen and oxygen will be generated under the irradiation of sunlight, but because hydrogen and oxygen are produced in one catalyst at the same time, it is difficult to separate hydrogen and oxygen.

Method used

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  • One adopts ni <sub>2</sub> A method to enhance photocatalysis with p nanocrystals
  • One adopts ni <sub>2</sub> A method to enhance photocatalysis with p nanocrystals
  • One adopts ni <sub>2</sub> A method to enhance photocatalysis with p nanocrystals

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Experimental program
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Effect test

Embodiment 1

[0033] This embodiment provides a 2 Methods for P nanocrystals to enhance photocatalysis, such as figure 1 As shown, it includes the following steps:

[0034] (a) Loading TiO on the surface of substrate (FTO) by hydrothermal method 2 array; specifically:

[0035] (a1) Add 50mL of water and 50mL of concentrated hydrochloric acid (concentration: 30wt%) into a 150ml beaker and stir well to obtain a hydrochloric acid solution, then add 2mL of tetrabutyl titanate and stir until colorless to obtain a first precursor solution;

[0036] (a2) Fluorine-doped tin oxide (FTO) conductive glass (1.0 × 4.0 cm in size) was ultrasonically cleaned in acetone, ethanol, and deionized water for 10 minutes, and then dried under nitrogen flow; In the vinyl fluoride bottle (face down), take 10ml of the above-mentioned first precursor solution and add it to the polyvinyl fluoride bottle, so that the conductive glass part is immersed in the first precursor solution; put the polyvinyl fluoride bottle...

Embodiment 2

[0044] This embodiment provides a 2 The method for enhancing photocatalysis by P nanocrystals is basically the same as that in Example 1, except that step (b2) and step (b3) are repeated once, so that in TiO 2 The surface of the array is loaded with two layers of styrene nanosphere films; the obtained TiO 2 opal inverse structure such as figure 2 (a)- figure 2 (b) shown; the final TiO 2 / Ni 2 P opal inverse structure such as figure 2 (c)- figure 2 (d) shown. from figure 2 In (a), it can be seen that the structure of the upper and lower layers using PS spheres as a template is staggered from each other, which is beneficial to Ni 2 P nanocrystals were successfully loaded on TiO 2 In order to achieve a better catalytic effect; from figure 2 (b) can be seen that TiO 2 grow vertically on the FTO substrate, while on the TiO 2 The above is the structure of the opal inverse structure prepared by using PS beads as a template; from figure 2 (c) to figure 2 (d) it c...

Embodiment 3

[0046] This embodiment provides a 2 The method for enhancing photocatalysis by P nanocrystals is basically the same as in Example 1, except that step (b2) and step (b3) are repeated twice, so that in TiO 2 The surface of the array is loaded with three layers of styrene nanosphere film.

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Abstract

The invention relates to a 2 The method for P nanocrystal enhanced photocatalysis, it comprises the following steps: (a) adopt hydrothermal method to support TiO on the substrate surface 2 array; (b) on the TiO 2 At least one layer of polystyrene nanofilm is supported on the surface of the array; (c) the product of step (b) is immersed in the titania sol precursor solution, taken out and dried, and then placed in an oxygen atmosphere for calcination; then spin-coated on its surface containing Ni 2 The n-hexane solution of P nanocrystals can be baked in a glove box to remove organic matter. In this way, not only can the inverse structure of opal be fully catalyzed, but also the Ni 2 P will also affect TiO 2 Play a very good catalytic effect.

Description

technical field [0001] The invention belongs to the field of nanomaterials, relates to a photocatalyst, in particular to a photocatalyst using Ni 2 A method for P nanocrystals to enhance photocatalysis. Background technique [0002] The use of fossil energy not only brings us convenience and prosperity of life, but also causes environmental pollution. Moreover, fossil energy is a non-renewable energy, which forces us to seek cleaner energy. Hydrogen combustion releases a large amount of energy, and produces water after combustion, which is clean and pollution-free. At present, there are three main ways to produce hydrogen, namely: recombination and regeneration of fossil energy, electrocatalysis and photocatalysis. However, the recombination and regeneration of fossil energy will still produce CO 2 And other gases, without solving the air problem, electrocatalysis will consume a lot of energy, and photocatalysis has attracted much attention because it uses sunlight. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J37/10B01J37/02B01J37/08C01B3/04C01B13/02
CPCC01B3/042C01B13/0207B01J27/24B01J37/0018B01J37/024B01J37/10B01J35/39B01J35/23Y02E60/36
Inventor 江林苏菲静文鹏梁志强孙迎辉
Owner SUZHOU UNIV
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