title: Hierarchical visible-light-response Ag/AgCl@TiO2 plasmonic photocatalysts for organic dye degradation.
abstract: A plasmonic photocatalyst of Ag/AgCl@TiO2 nanoparticles (NPs) was directly prepared by a one-step sonochemical method. Both Ag NPs and AgCl were co-deposited on TiO2 NPs to form Ag@TiO2 and Ag/AgCl@TiO2 using the method. Due to the localized surface plasmonic effects of Ag NPs, the visible-light absorbance of the Ag/AgCl@TiO2 photocatalyst was dramatically increased and the photocatalytic activity to decompose Rhodamine B was much improved under visible light. In addition, due to the advantages of the sonochemical approach, only a very small amount of Ag is required to obtain a high photocatalytic activity in the plasmonic catalyst. The mechanism for the enhancement of the visible-light-driven photocatalytic activities was also analyzed.
authors.affiliation: Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea. School of Materials Science and Engineering, Zhengzhou University, 450001, People's Republic of China.
authors.forename: Wentao
authors.initials: W
authors.lastname: Liu
authors.forename: Deliang
authors.initials: D
authors.lastname: Chen
authors.forename: Seung Hwa
authors.initials: SH
authors.lastname: Yoo
authors.forename: Sung Oh
authors.initials: SO
authors.lastname: Cho
mesh_terms: D004396:Coloring Agents / Q000032:analysis / Q000737:chemistry / Q000378:metabolism*; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods; D010777:Photochemistry / Q000295:instrumentation* / Q000379:methods; D012235:Rhodamines / Q000032:analysis / Q000737:chemistry / Q000378:metabolism; D012834:Silver / Q000737:chemistry*; D018030:Silver Compounds / Q000737:chemistry*; D013010:Sonication; D014025:Titanium / Q000737:chemistry*
chemical_list: D004396:Coloring Agents; D012235:Rhodamines; D018030:Silver Compounds; C009495:titanium dioxide; D012834:Silver; D014025:Titanium; C029773:rhodamine B; C037548:silver chloride