摘要
钛基涂层阳极具有较低的析氧电位和较高的析氧电流效率,并且表现出良好的稳定性,广泛应用于电催化氧化处理废水领域。利用标准强化电解寿命试验,通过电化学分析和物相分析等手段系统地探讨了Ti/Ta_(2)O_(5)-IrO_(2)钛基涂层钛阳极在酸性环境中阳极寿命和阳极失效机制。结果表明,Ti/Ta_(2)O_(5)-IrO_(2)涂层钛阳极的电解失效机制是物理作用和化学作用的叠加,其在酸性体系中的强化电解并不是均匀的,根据槽压变化,可分为4个阶段。
Titanium-based coated anodes have low oxygen precipitation potential and high oxygen precipitation current efficiency,and exhibit good stability,and are widely used in electrocatalytic oxidation for wastewater treatment.The anode life and anode failure mechanisms of Ti/Ta_(2)O_(5)-IrO_(2)titanium-based coated titanium anodes in acidic environments were systematically investigated by means of electrochemical and physical phase analyses using standard enhanced electrolytic life tests.The results show that the electrolytic failure mechanism of Ti/Ta_(2)O_(5)-IrO_(2)coated titanium anode is a superposition of physical and chemical effects,and its enhanced electrolysis in the acidic system is not uniform and can be divided into four stages according to the change of tank pressure.
作者
杨泽坤
崔兵
秦树林
杨海涛
YANG Ze-kun;CUI Bing;QIN Shu-lin;YANG Hai-tao(Hangzhou Research Institute of China Coal Technology&Engineering Group,Hangzhou 311201,China;State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China)
出处
《应用化工》
CAS
CSCD
北大核心
2023年第7期1974-1978,1982,共6页
Applied Chemical Industry
基金
国家自然科学基金(22078328,51504231)
中国煤炭科工集团科技创新创业资金专项(2022-23-2KJHZ001)。
关键词
涂层钛阳极
强化电解寿命
酸性体系
失效机理
电催化氧化
coated titanium anode
enhanced electrolytic life
acidic system
failure mechanism
electrocatalytic oxidation