Visible-light-driven Ag/Ag_3PO_4-based plasmonic photocatalysts:Enhanced photocatalytic performance by hybridization with graphene oxide  

作　　者：ZHU MingShan CHEN PengLei LIU MingHua 

机构地区：[1]Beijing National Laboratory for Molecular Science,CAS Key Laboratory of Colloid,Interface and Chemical Thermodynamics,Institute of Chemistry,Chinese Academy of Sciences

出　　处：《Chinese Science Bulletin》2013年第1期84-91,共8页

基　　金：supported by the National Natural Science Foundation of China (20873159,21021003 and 91027042);the Ministry of Science and Technology of China (2011CB932301)

摘　　要：An efficient visible-light-driven plasmonic photocatalyst with regard to graphene oxide(GO) hybridized Ag/Ag3PO4(Ag/Ag3PO4/GO) nanostructures has been facilely synthesized via a deposition-precipitation method.The synthesized nanostructures have been characterized by means of scanning electron microscopy(SEM),energy-dispersive X-ray spectroscopy(EDX),X-ray diffraction(XRD),UV-vis spectra,Fourier transform infrared spectra(FT-IR),X-ray photoelectron spectroscopy(XPS),and Raman spectra.It has been disclosed that compared with the bare Ag/Ag3PO4 nanospecies,the GO hybridized nanostructures display enhanced photocatalytic activity for the photodegradation of methyl orange pollutant under visible-light irradiation.It is suggested that the reinforced charge transfer and the suppressed recombination of electron-hole pairs in Ag/Ag3PO4 /GO,the smaller size of Ag/Ag3PO4 nanospecies in Ag/Ag3PO4/GO,all of which are the consequences of the hybridization of GO,are responsible for the enhanced photocatalytic performance.The investigation might open up new opportunities to obtain highly efficient Ag3PO4-based visible-light-driven plasmonic photocatalyst for the photodegradation of organic pollutants.An efficient visible-light-driven plasmonic photocatalyst with regard to graphene oxide （GO） hybridized Ag/Ag3PO4 （Ag/ Ag3POa/GO） nanostructures has been facilely synthesized via a deposition-precipitation method. The synthesized nanostructures have been characterized by means of scanning electron microscopy （SEM）, energy-dispersive X-ray spectroscopy （EDX）, X-ray diffraction （XRD）, UV-vis spectra, Fourier transform infrared spectra （FT-IR）, X-ray photoelectron spectroscopy （XPS）, and Ra- man spectra. It has been disclosed that compared with the bare Ag/Ag3PO4 nanospecies, the GO hybridized nanostructures display enhanced photocatalytic activity for the photodegradation of methyl orange pollutant under visible-light irradiation. It is suggested that the reinforced charge transfer and the suppressed recombination of electron-hole pairs in Ag/Ag3PO4/GO, the smaller size of Ag/Ag3PO4 nanospecies in Ag/Ag3PO4/GO, all of which are the consequences of the hybridization of GO, are responsible for the enhanced photocatalytic performance. The investigation might open up new opportunities to obtain highly efficient Ag3PO4-based visible-light-driven plasmonic photocatalyst for the photodegradation of organic pollutants.

关 键 词：光催化性能 光催化剂 氧化石墨 光驱动 杂交 电浆 扫描电子显微镜 傅里叶变换红外光谱 

分 类 号：O643.36[理学—物理化学] O613.71[理学—化学]