Nb-Rh co-doped titanium dioxide photocatalyst, and preparation method and application thereof

A technology for catalysts and uses, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of low catalytic efficiency of catalysts, and achieve easy large-scale production, The effect of high photocatalytic hydrogen production activity and simple preparation method

Active Publication Date: 2018-08-28
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of Nb-Rh co-doped TiO in view of the problem of low catalytic efficiency of catalysts existing in the field of photocatalysis 2 Catalyst, whose chemical composition can be expressed as Ti 1-x-y Nb x Rh y o 2 , where the range of x is 0

Method used

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  • Nb-Rh co-doped titanium dioxide photocatalyst, and preparation method and application thereof
  • Nb-Rh co-doped titanium dioxide photocatalyst, and preparation method and application thereof
  • Nb-Rh co-doped titanium dioxide photocatalyst, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 0.3mL of hydrochloric acid with a mass fraction of 35%, 0.2mL of 0.05M ethanol solution of niobium pentachloride, 1mL of 0.01M ethanol solution of rhodium chloride and 3.4g of butyl titanate were sequentially added to 10mL of absolute ethanol solution and stirred to form A clear solution was then slowly added dropwise with distilled water while continuing to stir until a gel formed. The gel was dried in an oven at 70°C for 20h, and then calcined in a muffle furnace at 450°C for 2h to obtain Ti 0.998 Nb 0.001 Rh 0.001 o 2 Nano powder.

Embodiment 2

[0051] 0.3mL of hydrochloric acid with a mass fraction of 35%, 10.5mL of 0.05M ethanol solution of niobium pentachloride, 1.1mL of 0.01M ethanol solution of rhodium chloride and 3.4g of butyl titanate were successively added to 10mL of absolute ethanol solution, stirred to A clear solution formed, and distilled water was slowly added dropwise while continuing to stir until a gel formed. The gel was dried in an oven at 70°C for 20h, and then calcined in a muffle furnace at 450°C for 2h to obtain Ti 0.949 Nb 0.05 Rh 0.001 o 2 Nano powder.

Embodiment 3

[0053] 0.3mL of hydrochloric acid with a mass fraction of 35%, 0.2mL of 0.05M ethanol solution of niobium pentachloride, 53mL of 0.01M ethanol solution of rhodium chloride and 3.4g of butyl titanate were sequentially added to 10mL of absolute ethanol solution and stirred to form A clear solution was then slowly added dropwise with distilled water while continuing to stir until a gel formed. The gel was dried in an oven at 70°C for 20h, and then calcined in a muffle furnace at 450°C for 2h to obtain Ti 0.949 Nb 0.001 Rh 0.05 o 2 Nano powder.

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Abstract

The invention relates to a Nb-Rh co-doped titanium dioxide photocatalyst, and a preparation method and application thereof. The catalyst is synthesized by doping modification of TiO2 with Nb and Rh. The Ti<1-x-y>Nb<x>Rh<y>O<2> photocatalyst synthesized through doping modification has excellent photocatalytic effect and is mainly applied to photocatalytic cracking of water and photocatalytic cracking of organic matters. The modified Ti<1-x-y>Nb<x>Rh<y>O<2> photocatalyst maintains the original chemical stability of TiO2. With the above characteristics, the photocatalyst has good application prospects in the fields of energy and environment.

Description

technical field [0001] The invention relates to a catalyst for photocatalytic cracking of water to produce hydrogen and photocatalytic cracking of organic matter and its preparation method and application, and relates to the technical field of semiconductor photocatalysis, in particular to the technical field of titanium dioxide photocatalytic materials. Background technique [0002] With the gradual depletion of traditional fossil energy such as oil and coal and the deteriorating environmental problems, the traditional energy structure system based on fossil energy is facing unprecedented crises and challenges. Hydrogen has the advantages of high energy density, excellent combustion performance, clean and pollution-free, and is the best alternative green energy for traditional fossil energy. However, the utilization of hydrogen energy largely depends on the development of hydrogen production technology. At present, industrial hydrogen production processes are mainly petroch...

Claims

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Application Information

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IPC IPC(8): B01J23/648C01B3/04C02F1/32
CPCC01B3/042C02F1/32B01J23/6484C01B2203/0277C01B2203/1041C02F2101/308C02F2305/10B01J35/39Y02E60/36
Inventor 郭旺黄集权李国京江亚彬薛垂兵黄秋凤兰海
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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