title: Graphene oxide enwrapped Ag/AgX (X = Br, Cl) nanocomposite as a highly efficient visible-light plasmonic photocatalyst.
abstract: In this paper, we have reported that well-defined graphene oxide (GO) enwrapped Ag/AgX (X = Br, Cl) nanocomposites, which are composed of Ag/AgX nanoparticles and gauze-like GO nanosheets, could be facilely fabricated via a water/oil system. We have shown that thus-synthesized GO-based hybrid nanocomposites could be used as a stable plasmonic photocatalyst for the photodegradation of methyl orange (MO) pollutant under visible-light irradiation. Compared with the corresponding bare Ag/AgX nanospecies, the GO-involved nanocomposites (Ag/AgX/GO) display distinctly enhanced photocatalytic activities. The hybridization of Ag/AgX with GO nanosheets causes the nice adsorptive capacity of Ag/AgX/GO to MO molecules, the smaller size of the Ag/AgX nanoparticles in Ag/AgX/GO, the facilitated charge transfer, and the suppressed recombination of electron-hole pairs in Ag/AgX/GO. It is suggested that these multifactors, resulting from the hybridization of GO, contribute to the enhanced photocatalytic performance observed from Ag/AgX/GO. The investigation likely opens up new possibilities for the development of original yet highly efficient and stable GO-based plasmonic photocatalysts that utilize visible light as an energy source.
authors.affiliation: Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, No. 2 Zhongguancun Beiyijie, Beijing 100190, People's Republic of China.
authors.forename: Mingshan
authors.initials: M
authors.lastname: Zhu
authors.forename: Penglei
authors.initials: P
authors.lastname: Chen
authors.forename: Minghua
authors.initials: M
authors.lastname: Liu
mesh_terms: D001391:Azo Compounds / Q000494:pharmacology; D015374:Biosensing Techniques / Q000379:methods*; D001965:Bromides / Q000737:chemistry; D002384:Catalysis; D002712:Chlorides / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning / Q000379:methods; D053761:Nanocomposites / Q000737:chemistry; D036103:Nanotechnology / Q000379:methods*; D010087:Oxides / Q000737:chemistry*; D055668:Photochemical Processes; D010777:Photochemistry / Q000379:methods; D012834:Silver / Q000737:chemistry*
chemical_list: D001391:Azo Compounds; D001965:Bromides; D002712:Chlorides; D010087:Oxides; D012834:Silver; C100258:methyl orange; D006108:Graphite