The fabrication and photocatalytic performances of flower-like Ag nanoparticles/ZnO nanosheets-assembled microspheres
Publication in refereed journal

香港中文大學研究人員
替代計量分析
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其它資訊
摘要Abstract A new micro/nanostructure photocatalyst, Ag nanoparticles decorated ZnO nanosheets-assembled microspheres (Ag-NPs/ZnOs), was synthesised by a two-step method. The flower-like micron-sized ZnO spheres assembled with ∼25 nm thick ZnO nanosheets were initially fabricated via a facile solvothermal method. Then, highly dispersed Ag nanoparticles (Ag-NPs) with dimension ranging from 15 to 50 nm were anchored onto the surface of the each ZnO nanosheet by the Sn(II) ion activation method. The as-prepared Ag-NPs/ZnOs demonstrated enhanced photocatalytic performance in eliminating methylene blue and methyl orange aqueous solutions under UV irradiation, showing twice faster reaction rate than the bare ZnOs. The enhanced photocatalytic activity was due to the suppression of electron/hole pair recombination and the acceleration of surface charge transfer induced by the highly dispersive Ag-NPs, which was further demonstrated by the cyclic voltammetry and impedance spectra measurements.
著者Deng Q., Tang H., Liu G., Song X., Xu G., Li Q., Ng D.H.L., Wang G.
期刊名稱Applied Surface Science
出版年份2015
月份1
日期1
卷號331
出版社Elsevier BV
出版地Netherlands
頁次50 - 57
國際標準期刊號0169-4332
電子國際標準期刊號1873-5584
語言英式英語
關鍵詞Ag nanoparticle, Micro/nanostructure, Microspheres, Photocatalysis, ZnO

上次更新時間 2021-16-01 於 00:45