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Enhanced visible light photodegradation activity of RhB/MB from aqueous solution using nanosized novel Fe-Cd co-modified ZnO.
D, Neena; Kondamareddy, Kiran Kumar; Bin, Han; Lu, Dingze; Kumar, Pravin; Dwivedi, R K; Pelenovich, Vasiliy O; Zhao, Xing-Zhong; Gao, Wei; Fu, Dejun.
Afiliação
  • D N; Key Laboratory of Artificial Micro- and Nano-Materials of Ministry of Education, Wuhan University, Wuhan, China. neena@whu.edu.cn.
  • Kondamareddy KK; Hubei Key Laboratory of Nuclear Solid Physics, School of Physics and Technology, Wuhan University, Wuhan, China. neena@whu.edu.cn.
  • Bin H; Department of Chemical & Materials Engineering, University of Auckland, Auckland, New Zealand. neena@whu.edu.cn.
  • Lu D; Key Laboratory of Artificial Micro- and Nano-Materials of Ministry of Education, Wuhan University, Wuhan, China.
  • Kumar P; Hubei Key Laboratory of Nuclear Solid Physics, School of Physics and Technology, Wuhan University, Wuhan, China.
  • Dwivedi RK; Department of physics, Veltech Rangarajan Dr. Sagunthala R&D Institute of science and technology, Avadi, Chennai, Tamilnadu, India.
  • Pelenovich VO; Key Laboratory of Artificial Micro- and Nano-Materials of Ministry of Education, Wuhan University, Wuhan, China.
  • Zhao XZ; Hubei Key Laboratory of Nuclear Solid Physics, School of Physics and Technology, Wuhan University, Wuhan, China.
  • Gao W; Inter Department of Physics, Xi'an Polytechnic University, Xi'an, China.
  • Fu D; Inter University Accelerator Centre (IUAC), Aruna Asaf Ali Marg, New Delhi, India.
Sci Rep ; 8(1): 10691, 2018 Jul 16.
Article em En | MEDLINE | ID: mdl-30013042
A series of novel Fe-Cd co-doped ZnO nanoparticle based photocatalysts are successfully synthesized by sol-gel route and characterized using scanning electron microscopy (SEM), energy dispersive X-ray emission (EDX), transmission electron microscopy (TEM), X-ray diffraction (XRD), UV-Vis spectroscopy, X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) techniques. The photocatalytic activity of ZnO nanoparticles doped with various atomic weight fraction of Fe and Cd has been investigated under visible light irradiation using the Methylene Blue and Rhodamine B dye in aqueous solution. The FeCd (2%):ZnO (ZFC-1) exhibit the highest photocatalytic activity in terms of rate constant as KMB = 0.01153 min-1 and KRhB = 0.00916 min-1). Further, the re-usability of the ZFC-1 photocatalyst is studied which confirms that it can be reused up to five times with nearly negligible loss of the photocatalytic efficiency. Moreover, the role of photoactive species investigated using a radical scavenger technique. The present investigations show that the doping concentration plays significant role in photocatalytic performance. The visible light absorption shown by Fe-Cd co-doped ZnO nanoparticles is much higher than that of undoped body probably due to co-doping, and the charge carrier recombination is decreased effectively which yields a higher photocatalytic performance. The mechanism for the enhancement of photocatalytic activity under visible light irradiation is also proposed.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Sci Rep Ano de publicação: 2018 Tipo de documento: Article País de afiliação: China País de publicação: Reino Unido

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Sci Rep Ano de publicação: 2018 Tipo de documento: Article País de afiliação: China País de publicação: Reino Unido