https://scholars.lib.ntu.edu.tw/handle/123456789/425131
標題: | Synthesis of Ag-modified TiO<inf>2</inf> nanotube and its application in photocatalytic degradation of dyes and elemental mercury | 作者: | Tsai, Cheng Yen CHEN-WUING LIU HSING-CHENG HSI Lin, Kuen Song Lin, Yi Wen |
關鍵字: | calcination-free | carcinogenic dye | electron-hole recombination | elemental mercury | hydrothermal method | photocatalysis | 公開日期: | 1-十月-2019 | 出版社: | WILEY | 卷: | 94 | 期: | 10 | 起(迄)頁: | 3251 | 來源出版物: | Journal of Chemical Technology and Biotechnology | 摘要: | © 2019 Society of Chemical Industry BACKGROUND: The non-modified titanium dioxide (TiO2) nanotube (TNT) and silver (Ag)-modified TNT samples were fabricated via an alkaline hydrothermal process. The synthesized samples had a high Brunauer–Emmett–Teller surface area since the resulted TNT was free of calcination, which is different from the traditional synthesized method. The specific surface area of non-modified TNT and Ag-modified TNT samples were 392 and 330 m2 g−1, respectively. RESULTS: The results indicated that anatase phase, cubic silver chloride (AgCl) and Ag co-existed in the Ag-modified TNT sample. In contrast, non-modified TNT sample has only anatase phase. The OH groups, pre-adsorbed water, and oxygen vacancies can be found on the surface of all samples. The Ag-modified TNT sample showed to have higher removal efficiencies than that of non-modified TNT sample for gas-phase elemental mercury, carcinogenic malachite green, crystal violet and mixtures of dyes. CONCLUSION: Although specific surface area of non-modified TNT was larger than that of Ag-modified TNT, the Ag-modified TNT possessed a high-performance photocatalyst due to the electron-hole pairs separation efficiency increase. © 2019 Society of Chemical Industry. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/425131 | ISSN: | 02682575 | DOI: | https://api.elsevier.com/content/abstract/scopus_id/85069890962 10.1002/jctb.6135 |
SDG/關鍵字: | Alkalinity; Calcination; Chemical industry; Chlorine compounds; Dyes; Efficiency; Gases; Mercury (metal); Nanotubes; Photocatalysis; Specific surface area; Stripping (dyes); Titanium dioxide; Yarn; Electron-hole recombination; Elemental mercury; Hydrothermal methods; Hydrothermal process; Photo catalytic degradation; Removal efficiencies; Separation efficiency; Titanium dioxides (TiO2); Silver halides; crystal violet; dye; malachite green; mercury; nanotube; oxygen; silver chloride; silver nanoparticle; titanium dioxide; titanium dioxide nanoparticle; alkaline hydrothermal process; alkalinity; animal tissue; Article; atmospheric pressure; bladder cancer; carcinogenicity; chemical composition; comparative study; controlled study; crystal structure; DNA adduct; gas; health hazard; nanofabrication; nonhuman; photocatalysis; photodegradation; physical chemistry; pore volume; surface area; waste component removal |
顯示於: | 環境工程學研究所 |
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