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Solid solution light catalyst capable of responding visible light

A photocatalyst, solid solution technology, used in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, hydrogen production, etc., can solve nitrogen escape, instability, loss of visible light responsiveness, etc. question

Inactive Publication Date: 2007-01-24
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, whether it is nitrogen-doped titanium dioxide or metal oxynitride, they are unstable, and nitrogen will escape at higher temperatures or under certain conditions, thus losing the ability to respond to visible light

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1. Using Bi(NO 3 ) 3 ·5H 2 O as bismuth source, take 4.8507g, use Y 2 o 3 As the yttrium source, take 1.1254g, use ammonium metavanadate as the vanadium source, take 2.3395g, put it into an agate mortar, add absolute ethanol 10mL as a dispersant, and grind until the absolute alcohol is completely volatilized.

[0016] 2. Dry the solid sample obtained above in a vacuum drying oven at 80°C for 12 hours, remove it from cooling and grind it for 10 minutes to obtain a dry powdered solid sample.

[0017] 3. Put the powder solid sample into a porcelain crucible with a volume of 50mL, then place the loaded porcelain crucible in a muffle furnace, raise the temperature to 800°C at a rate of 10°C / min, and keep it warm for 12h. After cooling, take it out and grind it, then place the sample-filled porcelain crucible in a muffle furnace and raise the temperature to 900°C at a rate of 10°C / min, and keep it warm for 12h. After cooling, take it out and grind it to get the target Bi...

Embodiment 2

[0021] 1. Using Bi(NO 3 ) 3 ·5H 2 O as bismuth source, take 0.4851g, use Ce 2 o3 As the cerium source, take 3.1182g, use ammonium metavanadate as the vanadium source, take 2.3395g, put it into an agate mortar, add absolute ethanol 10mL as a dispersant, and grind until the absolute alcohol is completely volatilized.

[0022] 2. Dry the solid sample obtained above in a vacuum drying oven at 80°C for 12 hours, remove it from cooling and grind it for 10 minutes to obtain a dry powdered solid sample.

[0023] 3. Put the powder solid sample into a porcelain crucible with a volume of 50mL, then place the loaded porcelain crucible in a muffle furnace, raise the temperature to 900°C at a rate of 10°C / min, and keep it warm for 5h. After cooling, take it out and grind it, then place the sample-filled porcelain crucible in a muffle furnace and raise the temperature to 1000°C at a rate of 10°C / min, and keep it warm for 10h. After cooling, take it out and grind it to obtain the target B...

Embodiment 3

[0027] 1. Using Bi(NO 3 ) 3 ·5H 2 O as bismuth source, take 9.2169g, use La 2 o 3 As the lanthanum source, take 0.1629g, use ammonium metavanadate as the vanadium source, take 2.3395g, put it into an agate mortar, add absolute ethanol 10mL as a dispersant, and grind until the absolute alcohol is completely volatilized.

[0028] 2. Dry the solid sample obtained above in a vacuum drying oven at 80°C for 12 hours, remove it from cooling and grind it for 10 minutes to obtain a dry powdered solid sample.

[0029] 3. Put the powder solid sample into a porcelain crucible with a volume of 50mL, then place the loaded porcelain crucible in a muffle furnace, raise the temperature to 850°C at a rate of 10°C / min, and keep it warm for 8h. After cooling, take it out and grind it, then place the sample-filled porcelain crucible in a muffle furnace and raise the temperature to 950°C at a rate of 10°C / min, and keep it warm for 8h. After cooling, take it out and grind it to obtain the targe...

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PUM

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Abstract

The solid solution light catalyst capable of responding visible light is used in semiconductor light catalysis. The light catalyst is compound of chemical expression of BixM2-xV2O8, where, M is one of Y, La, Ce, Pr, Nd and Sm, 0 B01J 23 / 648 B01J 23 / 644 B01J 23 / 63 C01B 3 / 04 C01B 13 / 02 0 9 1 2006 / 7 / 27 1899688 2007 / 1 / 24 000000000 Shanghai Jiaotong Univ. Shanghai 200240 Shangguanwenfeng Liu Hui Yuan Jian Shi Jianwei wang tilin wang guizhong 31201 The Patent Agency of Shanghai University of Communications No.1954 Huashan Road, Shanghai 200030

Description

technical field [0001] The invention relates to a photocatalyst, in particular to a photocatalyst capable of responding to visible light, which is used in the technical field of semiconductor photocatalysis. Background technique [0002] Photocatalysis is a new technology that uses light energy (especially solar light energy) for environmental purification and energy conversion. Because it can widely utilize natural energy—solar energy, and has outstanding features such as low energy consumption, mild reaction conditions, easy operation, and can reduce secondary pollution, it has attracted increasing attention and has broad application prospects. Under light conditions, photocatalysts can generate photogenerated electrons and holes, which can be reduced and oxidized with water to generate hydrogen and oxygen, thereby directly converting solar energy into hydrogen energy, realizing artificial photosynthesis, and contributing to future global energy and environmental issues. ...

Claims

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Application Information

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IPC IPC(8): B01J23/648B01J23/644B01J23/63C01B3/04C01B13/02
CPCY02E60/364Y02E60/36
Inventor 上官文峰刘恢袁坚施建伟
Owner SHANGHAI JIAO TONG UNIV
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