Department of Chemistry, Shanghai Normal University, Shanghai 200234, China.
Environ Sci Technol. 2010 Jun 1;44(11):4276-81. doi: 10.1021/es100084a.
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.
本文报道了利用三维（3D）分层钨酸铋（Bi（2）WO（6））微球在可见光照射下光催化去除空气中 400ppb 水平的 NO。开发了一种简便的微波辅助水热法，涉及硝酸铋和钨酸钠来合成光催化剂。通过 X 射线衍射（XRD）、BET、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）、拉曼和紫外可见反射光谱（UV-vis）对 Bi（2）WO（6）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。本工作表明，3D 分层 Bi（2）WO（6）微球是一种有效的可见光驱动的空气净化光催化功能材料。
