CNT/β-AgVO_3混杂材料的制备及其光催化分解水析氧性能  

Preparation and Photocatalytic Performance of CNT/β-AgVO_3 Hybrid Materials for Oxygen Evolution from Water

作　　者：赵学国[1] 黄祖志[1] 

机构地区：[1]江西省景德镇陶瓷学院,材料科学与工程学院,景德镇333001

出　　处：《无机化学学报》2015年第1期69-73,共5页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.)资助项目

摘　　要：采用水热法合成出单斜结构的β-AgVO3纳米棒和CNT/β-AgVO3光催化剂,在可见光模拟系统中以碘酸钾为电子捕获剂,检测氧气生成速率表征催化剂的光催化性能,并借助X射线衍射(XRD)分析、扫描电镜(SEM)、透射电镜(TEM)、紫外-可见光漫反射吸收光谱(UV-Vis)等对催化剂粉体进行了表征。实验结果表明,CNT附着在β-AgVO3颗粒表面有利于光生电子的转移和光解水析氧反应。CNT/β-AgVO3催化剂较之纯β-AgVO3催化剂活性显著提高。当CNT附着量为1.5%时,析氧速率可稳定在250μmol·g-1·h-1。β-AgVO3 nanowires with monoclinic structure were synthesized by hydrothermal method.C nanotube（CNT） as an effective cocatalyst was loaded onto β-AgVO3 photocatalyst.The photocatalytic activity of CNT/β-AgVO3 was performed by its O2 evolution performance under UV-Vis irradiation while KIO3 was used as electron acceptor,and the photocatalyst was characterized by XRD,SEM,TEM and UV-Vis absorption spectrum.The results showed that the photocatalytic activity of CNT/β-AgVO3 was superior to that of pure β-AgVO3,and loaded CNT can improve the interfacial electron transfer and the O2 evolution.When the amount of loaded CNT was 1%（wt）,the stable average oxygen evolution rate was about 250 μmol·g-1·h^-1.

关 键 词：光催化剂 β-AgVO3 分解水 氧气 

分 类 号：O643.32[理学—物理化学]