摘要
三氧化钨具有良好的可见光响应、氧化能力和耐光腐蚀性,是理想的光电极材料,但光生电荷分离效率低、还原能力弱和活性位点少等缺陷限制其广泛应用。本文利用阳极氧化法结合电沉积——化学氧化法在钨箔上原位生长BiVO_(4)/WO_(3)光电极。在模拟太阳光照射和辅助偏压0.6V的协同作用下,BiVO_(4)/WO3光电极对盐酸四环素、氧四环素和氯四环素的降解率高达95.8%、85.6%和96.9%。此外,以BiVO_(4)/WO_(3)光电极作阳极,与铂碳阴极所构建的光催化燃料电池表现出优异的产电性能,以甲醇为燃料时,填充因子FF可以达到0.3793,是WO_(3)光电极的1.35倍。这是因为BiVO_(4)与WO_(3)接触界面形成的Z型异质结,使BiVO_(4)/WO_(3)光电极具有活性位点多、光响应能力强、光生电荷分离效率高以及氧化还原能力强等优势。
Tungsten trioxide is an ideal candidate for photoelectrodes because of its good visible light re-sponse,oxidizing ability,and photocorrosion resistance.However,the defects of tungsten trioxide,including poor photogenerated charge separation efficiency,reducing ability,and active site density,limit its wide ap-plication.In this paper,BiVO_(4)/WO_(3) was in situ grown on tungsten foi by anodic oxidation combined with electrodeposition-chemical oxidation methods.Under the synergic effect of simulated solar irradiation and auxiliary bias voltage of 0.6 V,the degradation rates of tetracycline hydrochloride,oxytetracycline and chlortetracycline by the BiVO_(4)/WO_(3) photoelectrodes were 95.8%,85.6%,and 96.9%,respectively.In ad-dition,the photocatalytic fuel cell constructed with a BiVO_(4)/WO_(3) photoelectrode as anode and a platinum-carbon cathode exhibited excellent power production performance.When methanol was used as the fuel,the filling factor FF could reach 0.3793,which is 1.35 times that of WO_(3) photoelectrode.The interface be-tween BiVO_(4) and WO_(3) forms a Z-scheme heterojunction,which endows the BiVO_(4)/WO_(3) photoelectrode has the advantages of multiple active sites,strong light capture,high photogenerated charge separation effi-ciency and redox capacity.
作者
杨富林
李婷婷
林宇熙
汪向上
闵宇萱
杨奇东
孙子康
李冬雪
YANG Fulin;LI Tingting;LIN Yuxi;WANG Xiangshang;MIN Yuxuan;YANG Qidong;SUN Zikang;LI Dongxue(School of Environmental and Chemical Engineering,Nanchang Hangkong University,Nanchang 330063,China)
出处
《中国化学与材料学报》
2025年第1期1-21,共21页
Journal of Chinese Chemistry and Materials
基金
国家自然科学基金地区基金项目(52260027)
江西省自然科学基金项目(20242BAB25322)资助。
作者简介
通讯作者:李婷婷,40033@nchu.edu.cn。
