Simple, low-cost alkali treatment approach to improve photoactivity of Co0.01Zn0.99S

Peipei Sun; Fei Teng; Weiyi Hao; Xiaoman Yang; Siyu Zhai; Shuyu Liang

Simple, low-cost alkali treatment approach to improve photoactivity of Co_0.01Zn_0.99S

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Author(s): Peipei Sun^{1, 2, 3, 4} ; Fei Teng^{1, 2, 3, 4} ; Weiyi Hao^{1, 2, 3, 4} ; Xiaoman Yang^{1, 2, 3, 4} ; Siyu Zhai^{1, 2, 3, 4} ; Shuyu Liang^{1, 2, 3, 4}
- Affiliations: 1: Jiangsu Engineering and Technology Research Centre of Environmental Cleaning Materials (ECM), Nanjing University of Information Science and Technology , Nanjing 100084 , People's Republic of China ;
  2: Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), Nanjing University of Information Science and Technology , Nanjing 100084 , People's Republic of China ;
  3: Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Nanjing University of Information Science and Technology , Nanjing 100084 , People's Republic of China ;
  4: School of Environmental Science and Engineering, Nanjing University of Information Science and Technology , Nanjing 100084 , People's Republic of China
Source: Volume 15, Issue 2, 05 February 2020, p. 78 – 80
DOI: 10.1049/mnl.2019.0499 , Online ISSN 1750-0443

Received 02/09/2019, Accepted 06/11/2019, Revised 25/10/2019, Published 05/02/2020

An easy alkali treatment method is designed to enhance the activity of Co_0.01Zn_0.99S (CZS). After alkali treatment, the surface area of CZS increases by 2.8 times (12.8 versus 3.4 m²g⁻¹), and the oxidation potential (E _VB) of valence band also increases greatly (2.55 versus 2.19 V). After treatment, the UV-light activity has increased by 3.4 times for the degradation of dye. This simple, low-cost method may be extended to mass production for practical applications.

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Simple, low-cost alkali treatment approach to improve photoactivity of Co_0.01Zn_0.99S

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