Sonoelectrochemical methods of preparing silver-coated TiO2 nanoparticles with extremely high coverage

Yu Chuan Liu, Cheng Cai Wang, Lain Chuen Juang

研究成果: 雜誌貢獻文章同行評審

2 引文 斯高帕斯(Scopus)

摘要

In this study, we report the first sonoelectrochemical methods of preparing elemental Ag(0)-coated TiO2 nanoparticles. The coverage of Ag shells in the prepared nanocomposites is 0.93. First, Ag substrates were cycled in a deoxygenated aqueous solution containing 0.1 M HCl and 1 mM TiO2 nanoparticles from -0.3 to +0.3 V vs Ag|AgCl at 5 mV/s for 30 cycles. After this process, positively charged Ag-coated TiO2 nanoparticles were formed in the solutions. Then a cathodic overpotential of 0.6 V from the open circuit potential (ocp) of ca. 0.68 V vs Ag|AgCl was applied under sonication to synthesize elemental Ag(0)-coated TiO2 nanoparticles. The extremely high coverage of 0.93 in this work is notable, as compared with other methods to prepare metal-coated TiO2 nanoparticles.

原文英語
頁(從 - 到)71-75
頁數5
期刊Journal of Electroanalytical Chemistry
574
發行號1
DOIs
出版狀態已發佈 - 十二月 15 2004
對外發佈

ASJC Scopus subject areas

  • 分析化學
  • 化學工程 (全部)
  • 電化學

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