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2021 Vol.31, Issue 12
Ag2Se Modified TiO2 Heterojunction with Enhanced Visible-Light Photocatalytic Performance
Lei Zhu1†
,
Jia-Yao Tang1
,
Jia-Yi Fan1
,
Chen-Sun1
,
Won-Chun Oh2†
1Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng, 224051, P.R. China
2Department of Advanced Materials Science & Engineering, Hanseo University, Seosan 31962, Republic of Korea
†Corresponding author E-Mail : leizhu2016@ycit.edu.cn (L. Zhu, Yancheng Inst. Technol.) wc_oh@hanseo.ac.kr (W.-C. Oh, Hanseo Univ.)
December 2021. pp. 657-664
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Abstract

To build a highly active photocatalytic system with high efficiency and low cast of TiO2, we report a facile hydrothermal technique to synthesize Ag2Se-nanoparticle-modified TiO2 composites. The physical characteristics of these samples are analyzed by X-ray diffraction, scanning electron microscopy with energy dispersive X-ray analysis, transmission electron microscopy and BET analysis. The XRD and TEM results show us that TiO2 is coupled with small sized Ag2Se nanoplate, which has an average grain size of about 30 nm in diameter. The agglomeration of Ag2Se nanoparticles is improved by the hydrothermal process, with dispersion improvement of the Ag2Se@TiO2 nanocomposite. Texbrite BA-L is selected as a simulated dye to study the photodegradation behavior of as-prepared samples under visible light radiation. A significant enhancement of about two times the photodegradation rate is observed for the Ag2Se@TiO2 nanocomposite compared with the control sample P25 and as-prepared TiO2. Long-term stability of Ag2Se@TiO2 is observed via ten iterations of recycling experiments under visible light irradiation.

Keywords
heterogeneous
hydrothermal
Ag2Se@TiO2
DPCO
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Information
  • Publisher :Materials Research Society of Korea
  • Publisher(Ko) :한국재료학회
  • Journal Title :Korean Journal of Materials Research
  • Journal Title(Ko) :한국재료학회지
  • Volume : 31
  • No :12
  • Pages :657-664
  • Received Date : 2021-09-17
  • Revised Date : 2021-10-14
  • Accepted Date : 2021-10-19
  • DOI :https://doi.org/10.3740/MRSK.2021.31.12.657
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