摘要
使用电镀法制备了含SbO2-SnO2中间层的TiO2/SbO2-SnO2/SnO2-Sb-CeO2电极.采用扫描电镜(SEM)、X射线衍射仪(XRD)、电化学工作站等分析仪器研究了中间层对电极表面结构、组分和电化学性能的影响.在大电流密度下测定了电极的强化使用寿命,并以酸性黑10B为模拟污染物研究了电极的电催化性能.研究结果表明,SbO2-SnO2中间层可有效改善电极表面结构,从而影响电极的寿命和催化性能.相比不含中间层的TiO2/SnO2-Sb-CeO2电极,加入SbO2-SnO2中间层后,电极表面的活性层更加致密和平整,寿命增加了10倍,对酸性黑10B的降解速率提高了一倍.
Electrodes with SbO2-SnO2 intermediate layers were prepared via electrochemical deposition. Scanning electron microscopy（ SEM）,X-ray diffraction（ XRD） and electrochemical techniques of the electrodes were used to investigate the morphology,phase composition and electrochemical performance Accelerated service life test was conducted under a high current density in 1 mol·L-1H2SO4 solution,and the acid black 10B was used as a model pollutant to investigate the electrocatalytic activities of different electrodes. The results demonstrated that the SbO2-SnO2 intermediate layer enhanced the service life and electrochemical performance. The surface of electrode become smoother and denser when SbO2-SnO2intermediate layer was added. The lifetime and degradation rate of electrode with SbO2-SnO2 intermediate layer was 10 times and 1 time higher than that of TiO2/SnO2-Sb-CeO2 electrode,respectively.
出处
《环境化学》
CAS
CSCD
北大核心
2014年第6期992-998,共7页
Environmental Chemistry
基金
国家自然科学基金-中石油联合基金(U1162108)
国家自然科学基金(51272104)
江苏省科技支撑计划(BE2009679)资助
关键词
电极
中间层
寿命
催化性能
electrode
intermediate layer
service life
electrocatalytic performance
