Pt nanoparticles decorated rose-like Bi2O2CO3 configurations for efficient photocatalytic removal of water organic pollutants

Huijuan Chen; Zhongfu Zhou; G Neville Greaves; Salma Nigar; Huaqiang Cao; Tingkai Zhao; Xionggang Lu

doi:10.1039/c7ra12236e

Pt nanoparticles decorated rose-like Bi₂O₂CO₃ configurations for efficient photocatalytic removal of water organic pollutants

RSC Adv. 2018 Jan 3;8(2):914-920. doi: 10.1039/c7ra12236e. eCollection 2018 Jan 2.

Authors

Huijuan Chen¹, Zhongfu Zhou^{2

3

4}, G Neville Greaves^{4

5

6}, Salma Nigar¹, Huaqiang Cao⁷, Tingkai Zhao⁸, Xionggang Lu²

Affiliations

¹ School of Material Science and Engineering, Shanghai University Shanghai 200444 PR China.
² State Key Laboratory of Advanced Special Steel, Shanghai University Shanghai 200072 PR China z.zhou@shu.edu.cn.
³ Key Laboratory of Material Microstructures, Shanghai University Shanghai 200444 PR China.
⁴ Department of Physics, Aberystwyth University Aberystwyth SY23 3BZ UK.
⁵ State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology Wuhan 430070 China.
⁶ Department of Materials Science and Metallurgy, University of Cambridge Charles Babbage Road Cambridge CB2 3QZ UK.
⁷ Department of Chemistry, Tsinghua University Beijing 100084 PR China.
⁸ State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University Xi'an 710072 PR China.

Abstract

Pt nanoparticles decorated with rose-like Bi₂O₂CO₃ configurations were synthesized via a simple photoreduction method at room temperature. The structure, morphology, optical and electronic properties, and photocatalytic performance of the as-prepared materials were characterized. Compared to pure Bi₂O₂CO₃, the Pt/Bi₂O₂CO₃ photocatalysts show better performance in decomposing RhB, BPA and OTC under visible light (λ > 420 nm). The enhanced photocatalytic activity of Pt/Bi₂O₂CO₃ could be attributed to the modification in light absorption (λ > 420 nm) charge migration and the separation of photo-generated electrons (e^-) and holes (h⁺). Free radical trapping experiments demonstrated that the main active species of the catalytic reaction are different in decomposing RhB and BPA.