Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/66421
Title: Degradation of benzotriazole by a novel Fenton-like reaction with mesoporous Cu/MnO2 : combination of adsorption and catalysis oxidation
Authors: Zhang, YT
Liu, C
Xu, BB
Qi, F
Chu, W 
Keywords: Benzotriazole
Fenton-like
Mesoporous Cu/MnO2
Chemisorption
Issue Date: 2016
Publisher: Elsevier
Source: Applied catalysis B : environmental, 15 Dec. 2016, v. 199, p. 447-457 How to cite?
Journal: Applied catalysis B : environmental 
Abstract: Degradation of benzotriazole (BZA) as an emerging contaminant by a novel Fenton-like reaction was investigated using a catalyst prepared by incorporating Cu into mesoporous MnO2 (mesoporous Cu/MnO2, MCM). Catalysts were synthesized with different Cu contents, and were characterized by N-2 adsorption-desorption, X-ray photoelectron spectroscopy, ultraviolet-visible (UV-vis) diffuse reflectance spectroscopy, and temperature-programmed reduction (TPR)-H-2. The MCM functioned via surface chemisorption and redox reaction that was confirmed by intermediates identification, XPS and TPR analysis, followed by a Fenton-like oxidation derived by surface Cu* and Mn3+, to provide high degradation efficiency for BZA in solution. Fourier transform infrared (FT-IR) spectroscopy result also verified the surface adsorption and Fenton-like reaction. MCM exhibited much higher adsorption and catalytic activity in the Fenton reaction than pure MnO2 or CuO. The effect of Cu content in MCM, catalyst dose, H2O2 dose, and solution pH were investigated. BZA degradation was high in deionized water (removal efficiency=89%) and moderate in wastewater treatment plant effluent (removal efficiency = 56%) after 60-min reaction at an initial pH of 7.13, which could be developed by adjusting the dose of catalyst or H2O2. A possible mechanism for the reaction is proposed. This involves surface adsorption with copper and a redox reaction with Mn3+, followed by a copper-manganese cycle-derived Fenton-like reaction.
URI: http://hdl.handle.net/10397/66421
ISSN: 0926-3373
EISSN: 1873-3883
DOI: 10.1016/j.apcatb.2016.06.003
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

WEB OF SCIENCETM
Citations

5
Citations as of Jul 28, 2017

Page view(s)

9
Last Week
1
Last month
Checked on Aug 20, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.