• Home
  • Journals
  • Focus
  • Conferences
  • Researchers
  • Sign in

Outline

  • Abstract
  • Keywords

Figures(5)

标签(1)

Table 1

其他(2)

PDF
Document

Frontiers of Environmental Science & Engineering

2020, Volume 15,  Issue 4, Pages 55-0
    • PDF
    • collect

    Enhanced catalytic oxidation of 2,4-dichlorophenol via singlet oxygen dominated peroxymonosulfate activation on CoOOH@Bi

    1. Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130026, China
    2. Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130026, China
    3. China Northeast Municipal Engineering Design and Research Institute Co. Ltd., Changchun 130021, China

    Available online：2020-10-10
    Show More
    10.1007/s11783-020-1347-5
    Cite this article
    Tianhao Xi, Xiaodan Li, Qihui Zhang, Ning Liu, Shu Niu, Zhaojun Dong, Cong Lyu.Enhanced catalytic oxidation of 2,4-dichlorophenol via singlet oxygen dominated peroxymonosulfate activation on CoOOH@Bi[J].Frontiers of Environmental Science & Engineering,2020,15(4):55-

    Abstract

    Abstract • Bi2O3 cannot directly activate PMS. • Bi2O3 loading increased the specific surface area and conductivity of CoOOH. • Larger specific surface area provided more active sites for PMS activation. • Faster electron transfer rate promoted the generation of reactive oxygen species. • 1O2 was identified as dominant ROS in the CoOOH@Bi2O3/PMS system. Cobalt oxyhydroxide (CoOOH) has been turned out to be a high-efficiency catalyst for peroxymonosulfate (PMS) activation. In this study, CoOOH was loaded on bismuth oxide (Bi2O3) using a facile chemical precipitation process to improve its catalytic activity and stability. The result showed that the catalytic performance on the 2,4-dichlorophenol (2,4-DCP) degradation was significantly enhanced with only 11 wt% Bi2O3 loading. The degradation rate in the CoOOH@Bi2O3/PMS system (0.2011 min−1) was nearly 6.0 times higher than that in the CoOOH/PMS system (0.0337 min−1). Furthermore, CoOOH@Bi2O3 displayed better stability with less Co ions leaching (16.4% lower than CoOOH) in the PMS system. These phenomena were attributed to the Bi2O3 loading which significantly increased the conductivity and specific surface area of the CoOOH@Bi2O3 composite. Faster electron transfer facilitated the redox reaction of Co (III) / Co (II) and thus was more favorable for reactive oxygen species (ROS) generation. Meanwhile, larger specific surface area furnished more active sites for PMS activation. More importantly, there were both non-radical (1O2) and radicals (SO4−•, O2−•, and OH•) in the CoOOH@Bi2O3/PMS system and 1O2 was the dominant one. In general, this study provided a simple and practical strategy to enhance the catalytic activity and stability of cobalt oxyhydroxide in the PMS system.

    Keywords

    Cobalt oxyhydroxide ; Bismuth oxide ; Peroxymonosulfate ; 2 ; 4-dichlorophenol ; Singlet oxygen ; Electron transfer
    Previous article in issue
    article in issue Next
    登录后，您可以进行评论。请先登录

    评论

    评论

    • 所有评论
     咋就跳到顶部了
    2019-04-23 11:24:14
    回复 (0)
    inspur  手机账号
    2019-05-10 11:30:17
    回复 (0)

    Read

    35

    Download

    1

    Related Research

    Current Issue
      Current Issue
        Follow us
        Copyright © 2015 China Engineering Science Press.
        京ICP备11030251号
        Follow us
        Copyright © 2015 China Engineering Science Press.
        京ICP备11030251号