4.7 Article

Simple and facile ultrasound-assisted fabrication of Bi2O2CO3/g-C3N4 composites with excellent photoactivity

期刊

JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 497, 期 -, 页码 144-154

出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2017.03.010

关键词

Ultrasonic assisted method; Bi2O2CO3/g-C3N4 composites photocatalyst; Visible light; Photodegradation; Photocurrent density

资金

  1. National Science Foundation of China [51302325]
  2. Science Fund for Distinguished Young Scholars of Hunan Province [2015111016]
  3. Hunan Youth Innovation Platform [90600-903030005]
  4. Program for Shenghua Overseas Talent [90600-996010162]
  5. Project of Innovation-driven Plan in Central South University [201506004]
  6. National Natural Science Foundation of China [11674398]

向作者/读者索取更多资源

Bi2O2CO3/g-C3N4 (BOC/CN) composites photocatalyst was fabricated via a facile ultrasonic-assisted method. The crystal structure, morphology, optical and photocatalytic properties of the as-prepared samples were characterized by various analytical techniques. The results indicated that the Bi2O2CO3 nano flakes grew on the surface of the g-C3N4 nanosheets, forming closely contacted interfaces between the Bi2O2CO3 and the g-C3N4 component. BOC/CN composites with 50 wt% of g-C3N4 showed the optimal photoactivity for the degradation of RhB under visible light, which was approximately 2.2 times higher than that of pure g-C3N4 and 7 times of pure Bi2O2CO3, respectively. The enhanced performance of the BOC/CN composites was mainly attributed to a synergistic effect including the accelerated separation and migration of photogenerated charge carriers, demonstrated by Photoluminescence(PL), electrochemical impedance spectra (EIS) and photocurrent density. Finally, a possible photocatalytic mechanism was proposed based on the experimental results. It is expected that such a facile route method could provide new insights into fabricating other g-C3N4-based composite photocatalysts for environmental remediation. (C) 2017 Elsevier Inc. All rights reserved.

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