NaYF4 Yb,Tm/CdS composite as a novel near-infrared-driven photocatalyst
Publication in refereed journal

香港中文大學研究人員

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摘要We report on the preparation of a novel near infrared photocatalyst by combining a low energy band gap semiconductor CdS with an upconversion material NaYF4 Yb Tm Particles of CdS and NaYF4 Yb Tm are pretreated with thioglycolic acid and mercaptoethanol The reaction between these two organic molecules causes the formation of NaYF4 Yb Tm/CdS composite Results from scanning electron microscopy (SEM) transmission electron microscopy (TEM) energy-dispersive X-ray spectroscopy (EDX) and powder X-ray diffraction (XRD) measurements demonstrate that CdS nanoparticles are uniformly assembled on the surface of NaYF4 Yb Tm microrods Energy transfer from NaYF4 Yb Tm to CdS is confirmed by the upconversion and fluorescence decay properties Hydroxyl radicals are generated upon NIR irradiation on the composite material The NIR photocatalytic activity of the NaYF4 Yb Tm/CdS composite is investigated by degrading Rhodamine B and methylene blue A mechanism for NIR-driven photocatalysis is proposed (C) 2010 Elsevier B V All rights reserved
著者Li CH, Wang F, Zhu JA, Yu JC
期刊名稱Applied Catalysis B: Environmental
出版年份2010
月份10
日期20
卷號100
期次3-4
出版社Elsevier
頁次433 - 439
國際標準期刊號0926-3373
電子國際標準期刊號1873-3883
語言英式英語
關鍵詞Near infrared; Photocatalysis; Upconversion
Web of Science 學科類別Chemistry; Chemistry, Physical; CHEMISTRY, PHYSICAL; Engineering; Engineering, Chemical; ENGINEERING, CHEMICAL; Engineering, Environmental; ENGINEERING, ENVIRONMENTAL

上次更新時間 2021-14-05 於 01:18