期刊
MATERIALS LETTERS
卷 288, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.matlet.2021.129313
关键词
TiO2; PVA; C-doping; Band gap energy; Gas sensor
资金
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea [20181110200070]
Carbon-doped TiO2 (C-TiO2) was successfully synthesized using PVA, resulting in enhanced visible-light photocatalytic activity and improved sensitivity in NO gas detection.
Carbon doped TiO2 (C-TiO2) was successfully synthesized via a novel method using polyvinyl alcohol (PVA) to enhance visible-light photocatalytic activity. In addition, the effect of C doping of TiO2 on the sensitivity of NO gas detection with visible light was studied. The investigation of the NO gas sensing performance shows C-TiO2 enhanced the visible-light driven photocatalytic activity. It is shown that the visible-light driven photocatalytic activity of C-TiO2 originated from the decrease in the band gap energy by C doping. The band gap energy of C-TiO2 was 2.82 eV, which corresponds to the energy of photons with 440 nm light. It is thus demonstrated that the use of PVA provides a straightforward approach to synthesize C-TiO2 for NO gas detection using visible light. (C) 2021 Elsevier B.V. All rights reserved.
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