Wu Deyong, Long Mingce, Chen Chao, Wu Yahui, Cai Weimin, Zhou Jiangya, Ding Dawei
School of Environment Science and Engineering, Shanghai Jiao Tong University, Shanghai, China.
Water Sci Technol. 2009;59(3):565-71. doi: 10.2166/wst.2009.005.
A new heterogeneous Fenton-like system, consisting of V-MCM-41 catalyst and hydrogen peroxide, was proved to be effective in removing recalcitrant dye Rhodamine B (RhB) in aqueous solutions. V-MCM-41 was prepared following a direct hydrothermal procedure with tetraethyl silicate and ammonium metavanadate as precursor. The mesoporous structure has been characterized by XRD, and the specific surface area was determined as x m(2) g(-1) according to BET method. The catalytic reaction can proceed in a relatively wide pH range from acidic to alkaline. And the visible light irradiation cannot promote the reaction process. In addition, the mechanism implication for V-MCM-41 as a Fenton-like catalyst has been discussed.
一种由V-MCM-41催化剂和过氧化氢组成的新型非均相类芬顿体系，被证明在去除水溶液中难降解染料罗丹明B（RhB）方面是有效的。V-MCM-41采用直接水热法，以硅酸四乙酯和偏钒酸铵作为前驱体制备而成。通过X射线衍射对其介孔结构进行了表征，根据BET法测定其比表面积为x m² g⁻¹。该催化反应能在较宽的pH范围（从酸性到碱性）内进行。并且可见光照射并不能促进反应进程。此外，还讨论了V-MCM-41作为类芬顿催化剂的作用机理。
