光催化
可见光谱
材料科学
无定形固体
光化学
兴奋剂
化学工程
煅烧
辐照
分解
锐钛矿
带隙
催化作用
化学
光电子学
有机化学
工程类
核物理学
物理
作者
Kyong-Hwan Chung,Byung-Joo Kim,Young-Kwon Park,Sang-Chai Kim,Sang‐Chul Jung
出处
期刊:Catalysts
[MDPI AG]
日期:2021-08-21
卷期号:11 (8): 1010-1010
被引量:21
标识
DOI:10.3390/catal11081010
摘要
Amorphous TiO2 doped with N was characterized by its photocatalytic activity under visible light irradiation. The amorphous N-doped TiO2 was prepared by the sol-gel method through heat treatment at a low temperature. The photocatalyst showing activity in visible light despite heat treatment at low temperature can be applied to plastics and has excellent utility. The N-doped TiO2 appeared amorphous when heat-treated at 130 °C. It was converted into an anatase-type N-doped TiO2 when this was calcined at 500 °C. The photocatalyst showed photocatalytic activities in the photocatalytic decomposition of formaldehyde and methylene blue under visible light irradiation. The photocatalyst exhibited a higher rate of hydrogen production than that of TiO2 in photocatalytic decomposition of water under liquid-phase plasma irradiation. The bandgap of the amorphous N-doped TiO2 measured by investigation of optical properties was 2.4 eV. The lower bandgap induced the photocatalytic activities under visible light irradiation.
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