Synthesis and Photocatalytic Activity of Titania-Loaded Transition Metal-Modified MCM-41 Molecular Sieves

被引：28

作者：

Elias, Veronica R. ^{[1
,3
]}

Vaschetto, Eliana G. ^{[1
,3
]}

Sapag, Karim ^{[2
,3
]}

Crivello, Monica E. ^{[1
]}

Casuscelli, Sandra G. ^{[1
,3
]}

Eimer, Griselda A. ^{[1
,3
]}

机构：

[1] Univ Tecnol Nacl, Ctr Invest & Tecnol Quim CITeQ, Fac Reg Cordoba, RA-5016 Cordoba, Argentina

[2] Univ Nacl San Luis, Inst Fis Aplicada, CONICET, RA-5700 Chacabuco, San Luis, Argentina

[3] Consejo Nacl Invest Cient & Tecn, San Luis, Argentina

来源：

TOPICS IN CATALYSIS | 2011年 / 54卷 / 1-4期

基金：

美国国家科学基金会;

关键词：

MCM-41; Transition metal-modification; Titania-loading; Visible light photocatalysis; Dye degradation; IRON-CONTAINING MCM-41; VISIBLE-LIGHT; CATALYTIC-ACTIVITY; OXIDATIVE DEHYDROGENATION; ALUMINA CATALYSTS; MESOPOROUS SILICAS; PHASE OXIDATION; DOPED SILICA; COBALT; DEGRADATION;

D O I：

10.1007/s11244-011-9658-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

MCM-41 materials were modified with Cr, Fe, Co and Ti by the wet impregnation method. Various techniques including ICP, XRD, N-2 adsorption, UV-Vis DRS and TPR were employed for the catalysts characterization. The Acid Orange 7 (AO7) degradation in aqueous solution was studied over the synthesized photocatalyst under UV-Vis and visible radiation. The Cr modified catalysts exhibited the major activity under UV and visible light. Particularly, the Cr/MCM-41 sample reached a dye degradation of around 81% in visible light, being the Cr6+ species primarily responsible for this photoactivity. Upon the loading of TiO2, the searched heterojunction effect between chromium and titania species was not observed.

引用

页码：277 / 286

页数：10

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