Boron-doped diamond electrode: Preparation, characterization and application for electrocatalytic degradation of m-dinitrobenzene.
Boron-doped diamond (BDD) electrode was successfully prepared via microwave plasma chemical vapor deposition method and it was used in electrocatalytic degradation of m-dinitrobenzene (m-DNB). The electrocatalytic degradation efficiency of m-DNB was evaluated under different experimental parameters including current density, temperature, pH, Na2SO4concentration and initial m-DNB concentration. Under optimal parameters, degradation efficiency of m-DNB reached up to 82.7% after 150min. The degradation process of m-DNB was fitted well with pseudo first-order kinetics. Moreover, UV and HPLC analyses implied that m-DNB was totally destroyed and mineralized after 240min degradation, and the proposed mechanism during the electrocatalytic degradation process was analyzed. All these results demonstrated that BDD electrode possessed excellent electrocatalytic property and showed a great potential application in wastewater treatment.
School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China.
Hongmei
H
Bai
School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China. Electronic address: 49416151@qq.com.
Ping
P
He
School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China.
Jing
J
Pan
School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China.
Jingchao
J
Chen
School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China.
Yang
Y
Chen
Key Laboratory of Solid Waste Treatment and Resource Recycle of Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China.
Faqing
F
Dong
National Engineering Research Center for Municipal Wastewater Treatment and Reuse, Mianyang 621000, Sichuan, China.
Hong
H
Li
Boron-doped diamond electrode; Electrocatalytic degradation; m-Dinitrobenzene