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Preparation method and hydrogen production application of crystal face heterojunction rutile crystal form titanium dioxide photocatalyst

A photocatalyst, heterojunction technology, applied in titanium dioxide, titanium oxide/hydroxide, physical/chemical process catalyst, etc., can solve problems such as high photocatalytic activity

Inactive Publication Date: 2018-11-09
UNIV OF JINAN
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Problems solved by technology

However, for the rutile crystal form of TiO 2 However, the high electron-hole recombination rate makes the photocatalytic activity very low

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  • Preparation method and hydrogen production application of crystal face heterojunction rutile crystal form titanium dioxide photocatalyst
  • Preparation method and hydrogen production application of crystal face heterojunction rutile crystal form titanium dioxide photocatalyst
  • Preparation method and hydrogen production application of crystal face heterojunction rutile crystal form titanium dioxide photocatalyst

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Embodiment Construction

[0026] In order to further illustrate the method of constructing a supersensitive photoelectrochemical immunosensor based on the bidirectional control strategy of photogenerated carriers, this case is implemented according to the technical scheme of the present invention, and a specific implementation method is given: Measure 10 mL of hydrochloric acid and add it to 10 mL of ultrapure water, and magnetically stirred at room temperature for 20 min, measure 0.1-10 mL tetra-tert-butoxy titanate solution into the mixed solution and magnetically stirred for 30 min, and transfer the resulting mixed solution to high pressure In the PTFE lining of the reactor, the cleaned fluorine-doped SnO 2 Transparent conductive glass, abbreviated as FTO, is placed in the polytetrafluoroethylene lining with the conductive side facing down, and finally the reactor is placed in a preheated 150 °C oven for constant temperature reaction for 1~6 h; after the reaction is completed, the high-pressure The ...

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Abstract

The invention discloses a preparation method of a rutile crystal form titanium dioxide photocatalyst with a crystal face heterojunction structure and photocatalytic water splitting hydrogen productionapplication of the rutile crystal form titanium dioxide photocatalyst. A plurality of ultrathin TiO2 nano-sheets grow at the periphery of a TiO2 nano-rod to form a photocatalyst with a three-dimensional structure; the nano-sheet at the outer side mainly has crystal faces (111) and (101); the two crystal faces have different band gaps and valence band and conduction band positions, and a heterojunction II can be formed; meanwhile, the TiO2 nano-rod and the crystal face (111) of the nano-sheet can form the heterojunction II; the formed heterojunction can be used for extremely promoting separation of current carriers and prolonging the service life, so that the photocatalytic hydrogen production efficiency is improved. Furthermore, the novel crystal face heterojunction TiO2 photocatalyst provided by the invention has the advantages of simple reaction operation, high repeatability and environment protection and no pollution.

Description

technical field [0001] The invention relates to the field of material preparation and photocatalytic decomposition of water to produce hydrogen, more specifically to a preparation method of a rutile crystal-type three-dimensional titanium dioxide photocatalyst with a crystal plane heterojunction structure and its application to photocatalytic decomposition of water to produce hydrogen. Background technique [0002] In 1972, Fujishima and Honda reported in nature that titanium dioxide (TiO 2 ) on the electrode for photocatalytic water splitting to produce hydrogen, and the experiment proved for the first time the feasibility of using solar photolysis to split water to produce hydrogen. As an energy source, hydrogen has the characteristics of cleanness, environmental friendliness, high efficiency, and convenient transportation, and is the best secondary energy carrier. Since then, the use of semiconductor photocatalysts to convert the abundant but unevenly distributed and low...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053C01G23/08C01B3/04B01J21/06B01J35/00B01J35/02
CPCC01B3/042C01G23/053C01G23/08B01J21/063C01P2002/30C01P2004/30C01B2203/1041B01J35/00B01J35/30B01J35/39Y02E60/36
Inventor 高超民薛洁于海瀚葛慎光于京华
Owner UNIV OF JINAN
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