Tin oxide nanocrystals embedded in nanopore arrays on stainless steel surface for photocatalytic applications

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• 作者：Weiting Zhan (1)
  Hongwei Ni (1)
  Rongsheng Chen (1)
  Ziyang Wang (1)
  Chao Zhang (1)
  Rui Lei (1)
  
• 刊名：Applied Physics A: Materials Science & Processing
• 出版年：2014
• 出版时间：June 2014
• 年：2014
• 卷：115
• 期：4
• 页码：1381-1386
• 全文大小：
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• 作者单位：Weiting Zhan (1)
  Hongwei Ni (1)
  Rongsheng Chen (1)
  Ziyang Wang (1)
  Chao Zhang (1)
  Rui Lei (1)
  
  1. Key Laboratory for Ferrous Metallurgy and Resource Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan, 430081, China
  
• ISSN：1432-0630

文摘

The immobilization of SnO2sub> nanocrystals on solid substrates for practical photocatalytic applications suffers from poor adhesion that will lead to loss of photocatalytic activity and short service life. An efficient hydrothermal synthesis of SnO2sub> nanocrystals embedded in nanopore arrays on stainless steel surface was presented in this paper. The morphology, chemical composition and microstructure of the embedded tin oxide nanocrystals were investigated by X-ray diffraction, field-emission scanning electron microscope, X-ray photoelectron spectroscopy and UV-visible diffuse reflectance spectroscopy. The photocatalytic activity and stability of SnO2sub> nanocrystals was evaluated by photodegradation of methylene blue. SnO2sub> nanocrystals embedded in nanopore arrays on stainless steel surface existed in a tetragonal rutile structure. The increasing of the hydrothermal temperature will lead to the improvement in photocatalytic activity of SnO2sub> nanocrystals. The SnO2sub> nanocrystals prepared at 220?°C performed the highest photocatalytic activity and good photocatalytic stability, indicating the effective immobilization of SnO2sub> nanocrystals on anodized stainless steel.