Citation: JIANG Wen, LIU Jun-Xue, FENG Juan, WANG Ji-Zhuang, LI Yan-Peng, AN Chang-Hua. SiO2@AgCl:Ag Nanocomposites:an Efficient Plasmonic Photocatalyst for Degradation of Rhodamine B under Visible-Light Irradiation[J]. Chinese Journal of Inorganic Chemistry, ;2013, 29(8): 1753-1758. doi: 10.3969/j.issn.1001-4861.2013.00.187
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A plasmonic AgCl:Ag nanoparticles supported on SiO2 has been prepared using polyol precipitation method followed by photoreduction. On the basis of characterization, it was found that SiO2@AgCl:Ag nanoparticles exhibit shaped cube-tetrapods. The as-prepared catalysts show strong absorption in visible region due to surface plasmon resonance of Ag nanograins, which are beneficial for photocatalytic degradation of toxic persistent organic pollutants, e.g., rhodamine B, under visible light irradiation. For example, only two minutes was taken to decompose rhodamine B molecules with the assistance of SiO2@AgCl:Ag. Furthermore, radical scavenger effects demonstrate that O2·- and ·OH radicals are main active oxidation species in photocatalytic reaction. These features mean SiO2@AgCl:Ag can find applications in the fields of water disinfection and environmental remediation.
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