title: Anchoring of silver nanoparticles on graphitic carbon nitride sheets for the synergistic catalytic reduction of 4-nitrophenol.
abstract: In this paper, a facile process was developed for anchoring of silver nanoparticles on graphitic carbon nitride sheets (Ag/g-C3N4) with high catalytic activity for reduction of 4-nitrophenol. The morphology and structure of the as-prepared Ag/g-C3N4composite were investigated by FESEM, TEM, XRD and XPS. The reaction mechanism and the reduction kinetics of 4-nitrophenol under different light irradiation were systematically studied. The results showed that the obtained Ag/g-C3N4composite exhibited a much higher electro/photo catalytic activity and stability for reduction of 4-nitrophenol. Significantly, due to the synergistic effect and interaction between highly dispersed Ag nanoparticles (Ag NPs, ∼7.2 nm) and lamellar g-C3N4, not only transfer of interfacial charge, but also the separation of photoinduced electrons occurred when the reaction was proceeded under light. In addition, the composite exhibited high stability and reusability during the cycling experiments. The results showed that the Ag/g-C3N4composite is an effective and stable electro/photo catalyst for reduction of 4-nitrophenol.
authors.affiliation: State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, PR China.
authors.forename: Xiu
authors.initials: X
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, PR China. Electronic address: Fatangtan@hust.edu.cn.
authors.forename: Fatang
authors.initials: F
authors.lastname: Tan
authors.affiliation: State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, PR China.
authors.forename: Xueliang
authors.initials: X
authors.lastname: Qiao
authors.affiliation: Nanomaterials Research Center, Nanchang Institute of Technology, Nanchang, 330013, Jiangxi, PR China.
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Qiu
authors.affiliation: State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, PR China.
authors.forename: Jianguo
authors.initials: J
authors.lastname: Chen
mesh_terms: D002384:Catalysis; D004566:Electrodes; D006108:Graphite / Q000737:chemistry*; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry*; D009570:Nitriles / Q000737:chemistry*; D009596:Nitrophenols / Q000032:analysis* / Q000737:chemistry / Q000528:radiation effects; D010084:Oxidation-Reduction; D010316:Particle Size; D012834:Silver / Q000737:chemistry*; D013499:Surface Properties; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry / Q000528:radiation effects; D018508:Water Purification / Q000379:methods*
chemical_list: D009570:Nitriles; D009596:Nitrophenols; D014874:Water Pollutants, Chemical; D012834:Silver; C011206:cyanogen; D006108:Graphite; C024836:4-nitrophenol
keywords: 4-nitrophenol; Ag/g-C(3)N(4) composite; Catalytic activity; Electro/photo catalyst; Synergistic effect