An Efficient Bismuth Tungstate Visible-Light-Driven Photocatalyst for Breaking Down Nitric Oxide
An Efficient Bismuth Tungstate Visible-Light-Driven Photocatalyst for Breaking Down Nitric Oxide
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DOI：
10.1021/es100084a
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发表时间：
2010-06-01
影响因子：
11.4
通讯作者：
Leung, Michael K. H.
中科院分区：
文献类型：
--
作者：
Li, Guisheng;Zhang, Deqing;Leung, Michael K. H.
本文报道了利用三维（3D）分级钨酸铋（Bi₂WO₆）微球在可见光照射下光催化去除空气中浓度为400 ppb的NO。开发了一种简便的微波辅助水热法，以硝酸铋和钨酸钠为原料合成光催化剂。通过X射线衍射（XRD）、布鲁诺 - 埃梅特 - 特勒（BET）比表面积测定法、透射电子显微镜（TEM）、场发射扫描电子显微镜（FESEM）、X射线光电子能谱（XPS）、拉曼光谱以及紫外 - 可见反射光谱（UV - vis）对Bi₂WO₆样品进行了表征。讨论了所制备样品的物理化学性质与光催化性能之间的关系。本研究表明，3D分级Bi₂WO₆微球是用于空气净化的有效的可见光驱动光催化功能材料。
This paper reports a photocatalytic removal of 400 ppb level of NO in air under visible light irradiation by utilizing three-dimensional (3D) hierarchical bismuth tungstate (Bi(2)WO(6)) microspheres. A facile microwave-assisted hydrothermal method involving bismuth nitrate and sodium wolframate was developed to synthesize the photocatalyst The Bi(2)WO(6) samples were characterized by using X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), Raman and ultraviolet visible reflectance (UV-vis) spectroscopy. The relationship between the physicochemical property and the photocatalytic performance of the as prepared samples is discussed. The present work demonstrates that the 3D hierarchical Bi(2)WO(6) microspheres are effective visible-light-driven photocatalytic functional materials for air purification.