Preparation and Properties of Titanium based Metal Oxide Electrodes for Ammonia Nitrogen Wastewater Treatment
- 2015年第21卷 
采用热分解方法制备了4种电极钛基金属氧化物：Ti/SnO2+Sb2O3、Ti/SnO2+Sb2O3/SnO2+IrO2、Ti/SnO2+Sb2O3/SnO2+RuO2和Ti/SnO2+Sb2O3/SnO2+CeO2. X-射线衍射分析表明Ti/SnO2+Sb2O3/SnO2+CeO2电极的CeO2晶体结构完好，连续工作较长时间电极表面没有明显析氧. 使用该电极电解氧化氨氮模拟废水（降解2 h），氨氮模拟废水从高浓度（500 mg·L-1）降解为较低浓度（180 mg·L-1），降解效率可达64%，电解活性最佳.In this paper, four types of titanium based metal oxides electrodes were prepared by thermal decomposition method: Ti/SnO2+Sb2O3, Ti/SnO2+Sb2O3/SnO2+IrO2, Ti/SnO2+Sb2O3/SnO2+RuO2, Ti/SnO2+Sb2O3/SnO2+CeO2. The XRD results show that CeO2 in Ti/SnO2+Sb2O3/SnO2+CeO2 displayed a good crystal structure, and there was no significant oxygen evolution reaction occurred after electrolytic oxidation. Compared with the other three electrodes, the Ce-doped electrode exhibited the best electro-catalytic activity: the degradation of the simulated wastewater with high concentration (500 mg·L-1) was 180 mg·L-1, and the degradation efficiency was up to 64%.