a facile approach to prepare black tio2 with oxygen vacancy for enhancing photocatalytic activity

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ID: 180683
2018
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Abstract
Black TiO2 has triggered worldwide research interest due to its excellent photocatalytic properties. However, the understanding of its structure–property relationships and a more effective, facile and versatile method to produce it remain great challenges. We have developed a facile approach to synthesize black TiO2 nanoparticles with significantly improved light absorption in the visible and infrared regions. The experimental results show that oxygen vacancies are the major factors responsible for black coloration. More importantly, our black TiO2 nanoparticles have no Ti3+ ions. These oxygen vacancies could introduce localized states in the bandgap and act as trap centers, significantly decreasing the electron–hole recombination. The photocatalytic decomposition of both rhodamine B and methylene blue demonstrated that, under ultraviolet light irradiation, better photocatalytic performance is achieved with our black TiO2 nanoparticles than with commercial TiO2 nanoparticles.
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chen2018nanomaterialsa Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Shihao Chen;Yang Xiao;Yinhai Wang;Zhengfa Hu;Hui Zhao;Wei Xie
Journal progress in neuro-psychopharmacology & biological psychiatry
Year 2018
DOI
10.3390/nano8040245
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