Deposition of Ag Nanoparticles on Carbon Microspheres Surface：Evaluation of Structures,Electrochemical and Optical Properties  

作　　者：杨维佳 HAO Yamin YAN Lingpeng 杨永珍 陈永康 LIU Xuguang XU Bingshe 

机构地区：[1]Key Laboratory of lnterface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Taiyuan 030024, China [2]Research Center on Advanced Material Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China [3]College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2016年第4期743-749,共7页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(21176169);the Shanxi Provincial Key Innovative Research Team in Science and Technology(2012041011,2015013002-10);the International Science&Technology Cooperation Program of China(2012DFR50460);the Research Project Supported by Shanxi Scholarship Council of China(2012-038)

摘　　要：A hybrid material of carbon microspheres（CMSs） with Ag decoration（Ag/CMSs） was developed.Poly（3-hexylthiophene）：Ag/CMSs composite film was prepared by spin-coating.Scanning electron microscopy,transmission electron microscopy,Fourier transform infrared spectrometry,X-ray diffraction,thermogravimetric analysis and cyclic voltammetry were employed to analyze the morphologies,structures,thermal properties and energy levels of Ag/CMSs.The optical property of the composite films was characterized by ultraviolet-visible spectrophotometry and fluorescent spectrometry.The results indicate that silver nanoparticles（AgNPs,d = 10-20 nm） are distributed on the surface of CMSs.LUMO and HOMO energy levels of Ag/CMSs are-3.97 and-5.52 e V,below the vacuum energy level,respectively,indicating that it is feasible to use Ag/CMSs as an electron acceptor.Ag NPs are blended into the active layer to trigger localized surface plasmon resonance,and consequently enhance light harvesting.The coupling of surface plasmons and excitons increased the probability of exciton dissociation.A hybrid material of carbon microspheres（CMSs） with Ag decoration（Ag/CMSs） was developed.Poly（3-hexylthiophene）：Ag/CMSs composite film was prepared by spin-coating.Scanning electron microscopy,transmission electron microscopy,Fourier transform infrared spectrometry,X-ray diffraction,thermogravimetric analysis and cyclic voltammetry were employed to analyze the morphologies,structures,thermal properties and energy levels of Ag/CMSs.The optical property of the composite films was characterized by ultraviolet-visible spectrophotometry and fluorescent spectrometry.The results indicate that silver nanoparticles（AgNPs,d = 10-20 nm） are distributed on the surface of CMSs.LUMO and HOMO energy levels of Ag/CMSs are-3.97 and-5.52 e V,below the vacuum energy level,respectively,indicating that it is feasible to use Ag/CMSs as an electron acceptor.Ag NPs are blended into the active layer to trigger localized surface plasmon resonance,and consequently enhance light harvesting.The coupling of surface plasmons and excitons increased the probability of exciton dissociation.

关 键 词：ultraviolet silver voltammetry plasmon visible consequently exciton dissociation blended localized 

分 类 号：TQ127.11[化学工程—无机化工] TB383.1[一般工业技术—材料科学与工程]