title: Ag/AgxH3-xPMo12O40Nanowires with Enhanced Visible-Light-Driven Photocatalytic Performance.
abstract: Photocatalysis, a promising technology platform to address the environmental problems, has been attracting considerable attention. In this paper, Ag/AgxH3-xPMo12O40(simplified as Ag/AgHPMo12) nanowires have been synthesized by a facile solid reaction route and in situ photodeposited method. The results of SEM and TEM indicate that the diameters of AgHPMo12nanowires are about 45 ± 10 nm, and Ag nanoparticles with diameters in the range of 5-15 nm are uniformly anchored on the surface of AgHPMo12nanowires. The Ag content in the Ag/AgHPMo12composite was manipulated by the light irradiation time (Ag/AgHPMo12-x; x stands for the irradiation time; x = 2, 4, 6, 8 h, respectively). With increasing irradiation time, the light absorption of as-synthesized samples in the visible region was gradually enhanced. The Ag/AgHPMo12-4 exhibits the best photocatalytic performance for the degradation of methyl orange and reduction of Cr2O72-under visible-light (λ > 420 nm) irradiation. The study of the photocatalytic mechanism reveals that both Ag and AgHPMo12can be excited by visible light. The photoinduced electrons were transferred from AgHPMo12to metallic Ag, and combined with the Ag plasmonic holes. The Ag plasmonic electrons were trapped by O2to form ·O2-, or directly reduced Cr2O72-to Cr3+. Meanwhile, the ·O2-species and the photogenerated holes of AgHPMo12were used to oxidize MO or i-PrOH; thus, they showed highly efficient and recyclable photocatalytic performance for removing the organic and inorganic pollutants.
authors.affiliation: Key Laboratory of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University , Changchun, 130024 P. R. China.
authors.forename: Hong-Fei
authors.initials: HF
authors.lastname: Shi
authors.affiliation: Key Laboratory of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University , Changchun, 130024 P. R. China.
authors.forename: Gang
authors.initials: G
authors.lastname: Yan
authors.affiliation: Key Laboratory of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University , Changchun, 130024 P. R. China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University , Changchun, 130024 P. R. China.
authors.forename: Hua-Qiao
authors.initials: HQ
authors.lastname: Tan
authors.affiliation: Key Laboratory of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University , Changchun, 130024 P. R. China.
authors.forename: Wen-Zhe
authors.initials: WZ
authors.lastname: Zhou
authors.affiliation: Key Laboratory of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University , Changchun, 130024 P. R. China.
authors.forename: Yuan-Yuan
authors.initials: YY
authors.lastname: Ma
authors.affiliation: Key Laboratory of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University , Changchun, 130024 P. R. China.
authors.forename: Yang-Guang
authors.initials: YG
authors.lastname: Li
authors.affiliation: Key Laboratory of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University , Changchun, 130024 P. R. China.
authors.forename: Weilin
authors.initials: W
authors.lastname: Chen
authors.affiliation: Key Laboratory of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University , Changchun, 130024 P. R. China.
authors.forename: En-Bo
authors.identifier: http://orcid.org/0000-0001-5236-7566
authors.initials: EB
authors.lastname: Wang
keywords: Ag; nanowires; photodegradation; photoreduction; polyoxometalates