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TS-1 molecular sieve catalyst with special structure, and application thereof in photocatalytic water hydrogen production

A TS-1, special structure technology, applied in TS-1 molecular sieve catalyst and its application field in photocatalytic water hydrogen production, can solve the problems of insufficient utilization of solar energy, achieve the promotion of semiconductor photocatalytic water hydrogen production reaction, enhance Photocatalytic activity, high activity effect

Active Publication Date: 2020-04-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]The general limitation of photocatalytic hydrogen production from water mainly comes from two factors: competition between the recombination and transfer of photogenerated electrons and holes; insufficient utilization of solar energy

Method used

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  • TS-1 molecular sieve catalyst with special structure, and application thereof in photocatalytic water hydrogen production
  • TS-1 molecular sieve catalyst with special structure, and application thereof in photocatalytic water hydrogen production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: Prepare the TS-1 molecular sieve to be regulated by the hole

[0027] The TS-1 molecular sieve to be alkalized was provided by Nanjing Xianfeng Nano Material Technology Co., Ltd. Before alkalization, it is roasted in a tube furnace at a temperature of 540°C for 3 hours to remove impurities and adsorbed water.

Embodiment 2

[0028] Example 2: Carrying out pore regulation on TS-1 molecular sieve

[0029] (1) Take 75 mL of ammonia solution with a concentration of 5.0 mol / L, and at 100° C., use hydrothermal method to carry out alkali treatment on 3 g of TS-1 molecular sieve for 6 hours to obtain alkalized TS-1 molecular sieve.

[0030] (2) Wash the alkalized TS-1 molecular sieve with water to neutrality, dry it at 60°C, and then bake it at 580°C for 6 hours to obtain a TS-1 molecular sieve with a hierarchical porous structure. The XRD test is as follows: figure 1 shown.

Embodiment 3

[0031] Example 3: Carrying out pore regulation on TS-1 molecular sieve

[0032] (1) Take 65 mL of Na with a concentration of 0.4 mol / L 2 CO 3 solution, at 80° C., 2.5 g of TS-1 molecular sieves were subjected to alkali treatment by hydrothermal method for 2 hours to obtain alkalized TS-1 molecular sieves.

[0033] (2) Wash the alkalized TS-1 molecular sieve with water to neutrality, dry it at 60°C, and then roast it at 560°C for 4 hours to obtain a TS-1 molecular sieve with a hierarchical porous structure. The XRD test is as follows: figure 1 shown.

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Abstract

The invention discloses a TS-1 molecular sieve catalyst with a special structure, and an application thereof in photocatalytic water hydrogen production. The TS-1 molecular sieve with a hierarchical pore structure is adopted as a carrier to load a noble metal, and a photocatalytic hydrogen production reaction is enhanced in the presence of a sacrificial agent and quantum dots CdS. The TS-1 molecular sieve catalyst with the special structure has the characteristics of being wide in photoresponse range, capable of effectively separating photo-induced electrons from hole pairs, high in photocatalytic activity and good in photocatalytic hydrogen production effect in the field of photocatalytic water hydrogen production.

Description

technical field [0001] The invention relates to the technical field of photocatalytic hydrogen production from water, in particular to a TS-1 molecular sieve catalyst with a special structure and its application in photocatalytic water hydrogen production. Background technique [0002] High oil prices and rising greenhouse gas emissions are unresolved issues for the global economy and climate. For the sustainable development of human beings in the future, we should comprehensively utilize resources, protect the environment, and live in harmony with nature. The shortage of fossil energy and global environmental problems need to be resolved urgently. Hydrogen energy, as a clean and pollution-free energy source, has attracted more and more attention. Hydrogen has the following characteristics: good thermal conductivity, easy recovery, good combustion performance, low loss, friendly to the environment, non-corrosive product water, and high energy per unit mass. [0003] The tr...

Claims

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Application Information

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IPC IPC(8): B01J29/89B01J35/10C01B3/04
CPCB01J29/89C01B3/042C01B2203/0277B01J35/39B01J35/60B01J35/61B01J35/63Y02E60/36
Inventor 程党国赵子喻陈丰秋詹晓力
Owner ZHEJIANG UNIV
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