Design of a higher positive valence band in g-C3N4 photocatalyst for enhanced photocatalytic activity by copper hydroxide deposition. (24th August 2022)

• Record Type: Journal Article
• Authors: Yang, Kuan; Yu, Qingbo; Li, Huiqin; Ren, Xinxin; Pan, Jia; Li, Xianhua
• Is Part Of: Materials technology. Volume 37:Number 10(2022)
• Page Start: 1459
• Page End: 1466
• Publication Date: 2022-08-24
• Subjects: Carbon nitride -- copper hydroxide -- photocatalytic; Materials -- Periodicals; Materials science -- Periodicals; Materials -- Technological innovations -- Periodicals; 620.1105
• DOI: 10.1080/10667857.2021.1954290
• Languages: English
• ISSNs: 1066-7857

Abstract

ABSTRACT: The graphitic carbon nitride/copper hydroxide photocatalyst, which achieved ∼15.8-fold enhanced visible-light photocatalytic performance for pollutant degradation compared to origin g-C3 N4, was synthesised by chemical deposition strategy. The experimental results show that Cu 2+ ions in Cu(OH)2 interact with electron-rich N atoms in g-C3 N4 . The stronger interaction promotes the change of the local electric field in g-C3 N4 /Cu(OH)2 to obtain a more positive valence band, which can generate strongly oxidised photogenerated holes. This photogenerated holes played a dominant role in pollutant degradation. The present work may provide a promising approach to the fabrication of other efficient photocatalyst.