Preparation method of bivalent nickel ion doped and modified titanium dioxide (nickel-titanium dioxide) visible-light-induced photocatalyst

An ion doping, titanium dioxide technology, applied in the preparation and application of nanomaterials, can solve the problems of low utilization rate of visible light, large forbidden band width, hindering semiconductor applications, etc., and achieves simple and easy operation of equipment, good dispersion, and low cost. Effect
CN110694630AInactive Publication Date: 2020-01-17JILIN NORMAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JILIN NORMAL UNIV
Publication Date
2020-01-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of a Ni<2+> doped and modified TiO2 (Ni-TiO2) visible-light-induced photocatalyst, belonging to the technical field of preparation and application of nanomaterials. According to the method, Ni<2+> is doped into a TiO2 semiconductor, so surface oxygen defects can be artificially introduced. The band gap of the TiO2 semiconductor is narrowed due to dopingof Ni<2+> and introduction of the surface oxygen defects, so the light absorption range of Ni-TiO2 is expanded to a visible light region, and thus, the utilization of visible light by the TiO2 semiconductor is improved. The photocatalytic nitrogen fixation performance of the photocatalyst is evaluated based on the yield of NH3 in unit time. The method is simple and environment-friendly and has high catalytic efficiency; and the photocatalyst has potential application value in the field of visible light catalytic nitrogen fixation.
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Description

technical field

[0001] The invention belongs to the field of preparation and application of nanomaterials, in particular to a divalent nickel ion (Ni 2+ ) doped modified titanium dioxide (nickel-titanium dioxide)﹛TiO 2 (Ni-TiO 2 )﹜The preparation method of visible light catalyst. Background technique

[0002] Ammonia is one of the starting components in the synthesis of amino acids, nucleotides and other biological compounds in all living organisms, and is an indispensable chemical in biosynthesis as well as in agricultural fertilizers. The main method for producing ammonia in industry is the Haber-Bosch method, but this process has extremely high requirements on equipment, and it needs to be carried out under high temperature, high pressure and catalyst conditions, and the catalyst recycling efficiency is low. This method leads to huge energy consumption . Therefore, it is imperative to explore an energy-saving, economical and environmentally friendly artificial nitroge...

Claims

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