title: Improving the photocatalytic hydrogen production of Ag/g-C3N4 nanocomposites by dye-sensitization under visible light irradiation.
abstract: Ag nanoparticles were deposited on the surface of g-C3N4 by a chemical reduction method to increase visible-light absorption via the localized surface plasmon resonance effect, resulting in the reduced recombination of photo-generated electron-holes and enhanced photocatalytic activity. The Ag/g-C3N4 composite with a Ag loading of 3 wt% has the optimum photoactivity that is almost 3.6 and 3.4 times higher than pure g-C3N4 and the same photocatalysis system which has been reported, respectively. Fluorescein was introduced as a photosensitizer and H2 evolution soared to 2014.20 μmol g(-1) h(-1) and the rate is even about 4.8 times higher than that of the 3 wt% Ag/g-C3N4 composite. The chemical structure, composites, morphologies and optical properties of the obtained products are well-characterized by XRD, FTIR, TEM, EDS, XPS and UV-Vis DRS. Meanwhile, the photocatalyst exhibits high stability and reusability.
authors.affiliation: Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, P. R. China. hpzeng@scut.edu.cn.
authors.forename: Jiayi
authors.initials: J
authors.lastname: Qin
authors.affiliation: State Key Laboratory of Luminescent Materials and Devices, Institute of Functional Molecules, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, P. R. China.
authors.forename: Jingpei
authors.initials: J
authors.lastname: Huo
authors.affiliation: State Key Laboratory of Luminescent Materials and Devices, Institute of Functional Molecules, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, P. R. China.
authors.forename: Piyong
authors.initials: P
authors.lastname: Zhang
authors.affiliation: Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, P. R. China. hpzeng@scut.edu.cn.
authors.forename: Jian
authors.initials: J
authors.lastname: Zeng
authors.affiliation: State Key Laboratory of Luminescent Materials and Devices, Institute of Functional Molecules, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, P. R. China.
authors.forename: Tingting
authors.initials: T
authors.lastname: Wang
authors.affiliation: Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, P. R. China. hpzeng@scut.edu.cn and State Key Laboratory of Luminescent Materials and Devices, Institute of Functional Molecules, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, P. R. China.
authors.forename: Heping
authors.initials: H
authors.lastname: Zeng