Fabrication of black phosphorus/CdS heterostructure with enhancement photocatalytic degradation activity for tetrabromobisphenol A and toxicity prediction of intermediates

Zhaocheng Zhang; Dongyang He; Yangjian Zhou; Edith Bai; Jiao Qu; Ya-Nan Zhang

doi:10.1016/j.envres.2024.119060

Fabrication of black phosphorus/CdS heterostructure with enhancement photocatalytic degradation activity for tetrabromobisphenol A and toxicity prediction of intermediates

Environ Res. 2024 May 28:256:119060. doi: 10.1016/j.envres.2024.119060. Online ahead of print.

Authors

Zhaocheng Zhang¹, Dongyang He², Yangjian Zhou³, Edith Bai¹, Jiao Qu⁴, Ya-Nan Zhang²

Affiliations

¹ Key Laboratory of Geographical Processes and Ecological Security in Changbai Mountains, Ministry of Education, School of Geographical Sciences, Northeast Normal University, 130024, Changchun, China.
² School of Environment, Northeast Normal University, Changchun, Jilin, 130024, China.
³ School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China.
⁴ School of Environment, Northeast Normal University, Changchun, Jilin, 130024, China. Electronic address: quj100@nenu.edu.cn.

PMID: 38751001
DOI: 10.1016/j.envres.2024.119060

Abstract

Black phosphorus nanosheets (BPNs)/CdS heterostructure was successfully synthesized via hydrothermal method. The experimental results indicated that BPNs modified the surface of CdS nanoparticles uniformly. Meanwhile, the BPNs/CdS heterostructure exhibited a distinguished high rate of photocatalytic activity for Tetrabromobisphenol A (TBBPA) degradation under visible light irradiation (λ > 420 nm), the kinetic constant of TBBPA degradation reached 0.0261 min^-1 was approximately 5.68 and 9.67 times higher than that of CdS and P25, respectively. Moreover, superoxide radical (•O₂^-) is the main active component in the degradation process of TBBPA (the relative contribution is 91.57%). The photocatalytic mechanism and intermediates of the TBBPA was clarified, and a suitable model and pathway for the degradation of TBBPA were proposed. The results indicated that the toxicities of some intermediates were higher than the parent pollutant. This research provided an efficient approach by a novel photocatalyst for the removal of TBBPA from wastewater, and the appraisal methods for the latent risks from the intermediates were reported in this paper.

Keywords: Black phosphorus; CdS; Photocatalytic; TBBPA; Toxicity prediction.