https://scholars.lib.ntu.edu.tw/handle/123456789/425141
標題: | Influence of carbon-functional groups with less hydrophilicity on a TiO <inf>2</inf> photocatalyst for removing low-level elemental mercury | 作者: | Tsai, Cheng Yen Pan, Yu Tsai Tseng, Yao Hsuan CHEN-WUING LIU Kuo, Tien Ho HSING-CHENG HSI |
關鍵字: | Carbon impregnation | Competitive adsorption | Elemental mercury | Photocatalysis | Titanium dioxide | 公開日期: | 1-三月-2017 | 出版社: | BMC | 卷: | 27 | 期: | 2 | 起(迄)頁: | 70 | 來源出版物: | Sustainable Environment Research | 摘要: | © 2017 Chinese Institute of Environmental Engineering, Taiwan A carbon-containing titanium dioxide (C-TiO 2 ) photocatalyst was prepared via ethanol impregnation using commercial Ishihara ST-01 TiO 2 powder as the precursor. Scanning Electron Microscopy and X-ray Diffractometry results indicated that raw ST-01 and C-TiO 2 had similarly globular shapes and presented in anatase phase. N 2 adsorption isotherms suggested that carbon impregnated on the TiO 2 surface could slightly reduce the total surface area and pore volume. X-ray Photoelectron Spectroscopy and Fourier Transform Infrared Spectroscopy examinations further supported the formation of various C-functional groups on the C-TiO 2 surface. Removal of low-concentration Hg 0 by raw and C-TiO 2 was enhanced with increasing O 2 concentration. Furthermore, because the existence of C-functional groups on the C-TiO 2 surface, the photoinduced hydrophilicity resulted from light irradiation appears to decrease, causing less adsorption competition from H 2 O for Hg 0 adsorption at higher temperature. The reemission of adsorbed Hg species could thus be significantly decreased by carbon impregnation. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/425141 | ISSN: | 24682039 | DOI: | https://api.elsevier.com/content/abstract/scopus_id/85016253454 10.1016/j.serj.2017.01.003 |
顯示於: | 環境工程學研究所 |
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