High efficiency and rapid degradation of bisphenol A by the synergy between adsorption and oxidization on the MnO2@nano hollow carbon sphere

Yimei Zhang; Fei Wang; Ping Ou; Hao Zhu; Yuxian Lai; Yalong Zhao; Weilin Shi; Zhuang Chen; Shuai Li; Tong Wang

doi:10.1016/j.jhazmat.2018.08.003

High efficiency and rapid degradation of bisphenol A by the synergy between adsorption and oxidization on the MnO₂@nano hollow carbon sphere

J Hazard Mater. 2018 Oct 15:360:223-232. doi: 10.1016/j.jhazmat.2018.08.003. Epub 2018 Aug 2.

Authors

Yimei Zhang¹, Fei Wang², Ping Ou³, Hao Zhu⁴, Yuxian Lai⁵, Yalong Zhao⁵, Weilin Shi³, Zhuang Chen², Shuai Li², Tong Wang⁶

Affiliations

¹ College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, China; Laboratory of Environment Remediation and Function Material, Suzhou Research Institute of North China Electric Power University, Suzhou, Jiangsu, 215213, China. Electronic address: zhangym@ncepu.edu.cn.
² Laboratory of Environment Remediation and Function Material, Suzhou Research Institute of North China Electric Power University, Suzhou, Jiangsu, 215213, China.
³ Suzhou University of Science and Technology, Suzhou, Jiangsu, 215009, China.
⁴ Laboratory of Environment Remediation and Function Material, Suzhou Research Institute of North China Electric Power University, Suzhou, Jiangsu, 215213, China; Key Laboratory of Western China's Environmental Systems (Ministry of Education) and Gansu Engineering Center of Technology and Equipment for Fine Particles Pollution Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China.
⁵ College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, China.
⁶ Key Laboratory of Western China's Environmental Systems (Ministry of Education) and Gansu Engineering Center of Technology and Equipment for Fine Particles Pollution Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China.

PMID: 30119017
DOI: 10.1016/j.jhazmat.2018.08.003

Abstract

In this research, a novel efficiency MnO₂@Nano hollow carbon sphere (MnO₂@NHCS) nanocomposite was prepared by one-pot hydrothermal reaction with KMnO₄ solution. The adsorption and oxidization performance of MnO₂@NHCS were assessed by degradation of bisphenol A (BPA) at different conditions. The effect of dosage of MnO₂@NHCS, pH, initial concentration of BPA, temperature and humic acid were investigated systematically. Moreover, the characterizations of MnO₂@NHCS were measured by a series of techniques, such as XRD, FESEM, HRTEM, TGA and XPS. Notably, hollow structure of nano carbon sphere was still retained with uniform MnO₂ nanosheets covered. The results show that the removal rate of BPA was 95.3% within 10 min and BPA can be almost decomposed in 30 min under the optimal conditions. Additionally, the MnO₂@NHCS remained stable and had a high regeneration efficiency (more than 85%) after 3 cycles (360 min). The reaction intermediates/products of oxidation of BPA were analyzed and the possible degradation pathways of BPA were proposed. These research results demonstrate that the MnO₂@NHCS is a fleet and efficient material for BPA degradation in aqueous environment.

Keywords: Adsorption; Bisphenol-A; Degradation; MnO(2)@NHCS; Pathway.