• Complex
  • Title
  • Keyword
  • Abstract
  • Scholars
  • Journal
  • ISSN
  • Conference
搜索

Author:

Duan, Pingzhou (Duan, Pingzhou.) | Yang, Xiaoming (Yang, Xiaoming.) | Huang, Geli (Huang, Geli.) | Wei, Jie (Wei, Jie.) | Sun, Zhirong (Sun, Zhirong.) (Scholars:孙治荣) | Hu, Xiang (Hu, Xiang.)

Indexed by:

EI Scopus SCIE

Abstract:

Carbon nanotubes are recognized as an advanced anode material for electrocatalysis oxidation recalcitrant antibiotics in wastewater. In this study, a novel La2O3 -CuO2 /CNTs electrode was synthesized by solvothermal method and calcination in nitrogen atmosphere. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) were conducted to illustrate the structure and elemental composition, and the La and Cu bimetallic composite oxide (La2O3 -CuO2) were observed on the surface of carbon nanotubes. Cyclic voltammetry analysis showed that the modified electrode had better catalytic activity and stable working lifetime. The Tafel curves indicated that the corrosion potential of the electrode increased while the corrosion current density decreased. The degradation of ceftazidime by modified electrode was studied through optimization of five parameters, including current density, electrode space, electrolyte concentration, pH and volume of solution. The results demonstrated that La2O3 -CuO2 /CNTs electrode exhibited the electrochemical degradation efficiency of 90% towards 1 mg L-1 ceftazidime within 30 min, which is much higher than those of pristine CNTs and dimensional stable anode. The optimal operating conditions were: volume of 100 mL, 1 g L-1 Na-2 SO4 as electrolyte, current density of 0.8mA-cm(-2) , and electrode space is 2 cm. The degradation intermediates and routes of ceftazidime under modified electrode were deduced by LC-MS analysis. These results suggest that La2O3 -CuO2/CNTs electrodes can be considered as promising catalysts for treating bio-refractory antibiotics with relatively low concentration.

Keyword:

Electro-catalysis Ceftazidime Parameter optimization Degradation pathway La2O3-CuO2/CNTs

Author Community:

  • [ 1 ] [Duan, Pingzhou]Beijing Univ Chem Technol, Res Grp Water Pollut Control & Water Reclamat, Coll Chem Engn, Beijing 100029, Peoples R China
  • [ 2 ] [Huang, Geli]Beijing Univ Chem Technol, Res Grp Water Pollut Control & Water Reclamat, Coll Chem Engn, Beijing 100029, Peoples R China
  • [ 3 ] [Wei, Jie]Beijing Univ Chem Technol, Res Grp Water Pollut Control & Water Reclamat, Coll Chem Engn, Beijing 100029, Peoples R China
  • [ 4 ] [Hu, Xiang]Beijing Univ Chem Technol, Res Grp Water Pollut Control & Water Reclamat, Coll Chem Engn, Beijing 100029, Peoples R China
  • [ 5 ] [Yang, Xiaoming]Beijing GRIMM Technol Grp, Beijing 100160, Peoples R China
  • [ 6 ] [Sun, Zhirong]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100124, Peoples R China

Reprint Author's Address:

  • [Hu, Xiang]Beijing Univ Chem Technol, Coll Chem Engn, 15 Beisanhuan East Rd, Beijing 100029, Peoples R China

Show more details

Related Keywords:

Source :

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

ISSN: 0927-7757

Year: 2019

Volume: 569

Page: 119-128

5 . 2 0 0

JCR@2022

ESI Discipline: CHEMISTRY;

ESI HC Threshold:166

JCR Journal Grade:2

Cited Count:

WoS CC Cited Count: 31

SCOPUS Cited Count: 35

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 9

Online/Total:751/10592214
Address:BJUT Library(100 Pingleyuan,Chaoyang District,Beijing 100124, China Post Code:100124) Contact Us:010-67392185
Copyright:BJUT Library Technical Support:Beijing Aegean Software Co., Ltd.