Interfacial properties of the enhanced visible-light plasmonic Ag/Bi2WO6(001) nanocompo site
Wang, F; Cao, K; Wu, Y; Zhang, KH; Zhou, Y; Zhou, Y (reprint author), Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, 8 Xindu Rd, Chengdu 610500, Peoples R China.
2016
发表期刊APPLIED SURFACE SCIENCE
ISSN0169-4332
卷号360期号:-页码:1075—1079
文章类型期刊文献
摘要First principle calculations are performed to study the interfacial photoelectric properties of Agn/Bi2WO6 (0 0 1) (n=1, 2, 3, 4) hybrid photocatalyst. The parallel adsorption of Ag cluster leads to more energetic favorable structures due to stronger interfacial interactions. The positive charged Ag cluster may act as excited electron traps and facilitate the electron-hole separation. In particular, hybridization between Ag 5s and 0 2p leads to the formation of isolated energy levels above the valence bands, and they become more dispersed with broader bandwidth with the increment of silver cluster size, which is responsible for the enhanced absorption in visible-light region. In the deep valence region, Ag 4d orbital turns more delocalized and hybrid with 0 2p states as the cluster size increases, which contributes to more covalent bond feature of Ag-O. Moreover, optical spectra demonstrate obvious red-shifts of the absorption edge with the increment of silver content, which enhances efficiently the visible-light photocatalytic activities of Bi2WO6 (0 0 1). The study provides insights into the enhanced photocatalyic mechanism of Ag/Bi2WO6 (0 0 1) and aids in the design of noble metal loaded visible-light plasmonic photocatalyst. (C) 2015 Elsevier B.V. All rights reserved.
关键词Noble-metal Nanoparticles Density-functional Theory Photocatalytic Activity Bi2wo6 Surface Nanostructures Composites Adsorption Simulation Clusters
DOI10.1016/j.apsusc.2015.11.061
收录类别SCI
语种英语
WOS记录号WOS:000366592400082
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/25758
专题中科院上海应用物理研究所2011-2018年
通讯作者Zhou, Y (reprint author), Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, 8 Xindu Rd, Chengdu 610500, Peoples R China.
推荐引用方式
GB/T 7714
Wang, F,Cao, K,Wu, Y,et al. Interfacial properties of the enhanced visible-light plasmonic Ag/Bi2WO6(001) nanocompo site[J]. APPLIED SURFACE SCIENCE,2016,360(-):1075—1079.
APA Wang, F,Cao, K,Wu, Y,Zhang, KH,Zhou, Y,&Zhou, Y .(2016).Interfacial properties of the enhanced visible-light plasmonic Ag/Bi2WO6(001) nanocompo site.APPLIED SURFACE SCIENCE,360(-),1075—1079.
MLA Wang, F,et al."Interfacial properties of the enhanced visible-light plasmonic Ag/Bi2WO6(001) nanocompo site".APPLIED SURFACE SCIENCE 360.-(2016):1075—1079.
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