V—TiO2-xNx／SBA-15可见光催化剂的低温合成及催化降解亚甲基蓝的性能  

LOW-TEMPERATURE SYNTHESIS OF V-TiO2-xNx/SBA-15 VISIBLE PHOTOCATALYSTS AND ITS PHOTODEGRADATION ACTIVITY ON METHYLENE BLUE

作　　者：苗双[1] 皮勇[1] 沈雯雯[2] 章福祥[1] 关乃佳[1] 

机构地区：[1]南开大学化学学院新催化材料科学研究所,天津300071 [2]郑州大学化学系,郑州450000

出　　处：《石油学报（石油加工）》2008年第B10期256-259,共4页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金（20573059,20777039）和国家重点基础研究发展计划（973计划,2003CB615801）项目资助

摘　　要：以乙二胺为溶剂，以介孔分子筛SBA-15为载体，采用低温溶剂热法成功地合成出V和N元素共修饰的V—TiO2-xNX／SBA-15整体式可见光催化剂。将其用于光催化降解亚甲基兰的反应，较单-V或N改性的催化剂具有更强的可见光吸收能力，表现出更好的催化降解亚甲基兰的性能。结果也表明，采用金属、非金属双元素改性及“一锅法”整体合成方法是提高二氧化钛催化活性和实用性的有效方法。Visible-light-responsive V-TiO2-xNx/SBA-15 was triumphantly synthesized by ＇ one pot＇ method at low- temperature with ethylenediamine as solvent. The evaluation of catalytic activity showed that the V-TiO2-x Nx/SBA-15 sample had much superior performance with respect to the single V or N modified TiO2/SBA-15 in the visible-light photoeatalytic purification of methyene. It was indicated that visible-light absorption of the V-TiO2-x Nx/SBA-15 samples were enhanced by co-modification of V and N and ＇one pot＇ synthesis.

关 键 词：低温合成 双元素改性 整体式催化剂 可见光降解 

分 类 号：O643[理学—物理化学]