Ultra-high oxidation potential of Ti/Cu-SnO2 anodes fabricated by spray pyrolysis for wastewater treatment
Aqing Chen, Xudong Zhu Junhua Xi, Haiying Qin, Zhenguo Ji
TL;DR
This study develops Ti/Cu-SnO2 anodes via spray pyrolysis, achieving an ultra-high oxidation potential of 2.7 V for efficient wastewater treatment, with enhanced properties due to Cu doping.
Contribution
The paper introduces a novel fabrication method for Ti/Cu-SnO2 anodes with ultra-high oxidation potential, supported by first-principles calculations.
Findings
Achieved an oxidation potential of about 2.7 V vs NHE.
Cu doping increases the work function of SnO2.
Preferred (110) plane orientation enhances oxidation performance.
Abstract
High oxidation potential indicates anodes have high oxidation power and high current efficiency for organics oxidation. In this paper, we prepared Ti/Cu-SnO2 anodes using spray pyrolysis method. The Ti/Cu-SnO2 anodes have an ultra-high oxidation potential of about 2.7 V vs NHE, suitable for use in wastewater treatment. The Ti/Cu-SnO2 anodes exhibit the preferred orientation along (110) plane at high Cu doped concentration. First-principles calculations suggest that work function of Cu-SnO2 increases with the Cu doping concentration. It is obtained that the preferred (110) plane and the high work function are responsible for the enhanced oxidation potential of Ti/Cu-SnO2 anodes.
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