Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Inorganic Materials》 2018-06
Add to Favorite Get Latest Update

Au Nanoparticles(NPs) Surface Plasmon Resonance Enhanced Photocatalytic Activities of Au/Bi_2WO_6 Heterogeneous Nanostructures

WANG Dan-Jun;WANG Chan;ZHAO Qiang;GUO Li;YANG Xiao;WU Jiao;FU Feng;College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering;  
Novel visible-light-responsive Au/Bi_2WO_6 heterogeneous nanostructures were successfully prepared through in situ growth gold nanoparticles(Au NPs) on the second-structural nanosheets of three-dimensional(3 D) Bi_2WO_6 via a facile photoreduction process. XRD, FE-SEM, HR-TEM, FT-IR, XPS, and UV-Vis-DRS spectra were employed to investigate the phase composition, morgphology and light-absorption properties of as-preapared samples. Rhodamine B(Rh B) and phenol were selected as model pollutants to evaluate photocatalytic activities of samples. The experimental results reveal that the as-prepared Au/Bi_2WO_6 heterogeneous nanostructures exhibit much higher photocatalytic activities than pure Bi_2WO_6 for dye degradation. It is also revealed that 1.5 at%Au/Bi_2WO_6 sample exhibit the best photocatalytic activities in the degradation process of Rh B and phenol, the apparent rate constant is about 1.5 and 2.2 times as high as that of pure Bi_2WO_6 under visible light irradiation, respectively. Moreover, the trapping experiments results show that photogenerated hole(h+) and ·O2– serve as the main active species for the photodegradation of Rh B over Au/Bi_2WO_6 heterogeneous nanostructures. The enhanced photocatalytic efficiencies of Au/Bi_2WO_6 heterogeneous nanostructures are attributed to the charge transfer from Bi_2WO_6 to the deposited Au NPs as well as their surface plasmon resonance(SPR) absorption, which enhance the migration efficiency of the electron-holes and retard the recombination of electrons-hole pairs. Au NPs decorated Bi_2WO_6 heterogeneous nanostructures have considerable potential applications in solar-driven wastewater treatment.
【Fund】: 国家自然科学基金(21666039 21663030);; 陕西省科技厅项目(2013SZS20-P01 2015SF291);; 陕西省教育厅基金(15JS119);; 陕西省大学生创新创业训练计划项目(1517 1563);; 地方高校国家级大学生创新创业训练计划项目(12280);; 延安大学研究生创新项目(YCX201733)~~
【CateGory Index】: O643.36;O644.1
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved