title: Enhanced photocatalytic properties of α-SnWO4nanosheets modified by Ag nanoparticles.
abstract: Decoration of silver nanoparticles (Ag-NPs) on surface of α-SnWO4nanosheets has been achieved by a microwave-assisted deposition method. The as-synthesized products are structurally characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results illustrate that Ag-NPs are evenly anchored onto α-SnWO4surface to form close heterojunction and the amount of Ag nanoparticles grown on α-SnWO4nanosheets can be well controlled by tuning Ag+concentration. The photocatalytic properties of Ag-NPs/α-SnWO4composites are evaluated by degrading methyl orange (MO) under visible-light irradiation. Ag-NPs/α-SnWO4composites exhibit better photocatalytic properties than that of pure α-SnWO4, and Ag-NPs/α-SnWO4(5mol% Ag) presents the best photocatalytic activity, whose photodegradation efficiency of MO is about 97% within 70min. In addition, the obtained samples demonstrate good recyclability. The enhanced photocatalytic properties was attributed to synergistic effect between Ag-NPs and α-SnWO4nanosheets, which can increase absorption of visible light enabled by surface plasma resonance (SPR) of Ag-NPs and facilitate the separation of photogenerated electron-hole pairs.
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China; State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
authors.forename: Xuewei
authors.initials: X
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China. Electronic address: liangbo@ysu.edu.cn.
authors.forename: Bo
authors.initials: B
authors.lastname: Liang
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
authors.forename: Min
authors.initials: M
authors.lastname: Zhang
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
authors.forename: Yumei
authors.initials: Y
authors.lastname: Long
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China. Electronic address: liweifeng@suda.edu.cn.
authors.forename: Weifeng
authors.initials: W
authors.lastname: Li
keywords: Ag nanoparticles; Deposition; Nanocomposites; Photocatalysis; α-SnWO(4)