Simulated sunlight photodegradation of aqueous atrazine and rhodamine B catalyzed by the ordered mesoporous graphene-titania/silica composite material

被引：30

作者：

Li, Kexin ^{[1
]}

Huang, Yan ^{[1
]}

Yan, Liushui ^{[1
]}

Dai, Yuhua ^{[1
]}

Xue, Kunpeng ^{[1
]}

Guo, Huiqin ^{[1
]}

Huang, Zhimin ^{[1
]}

Xiong, Jingjing ^{[1
]}

机构：

[1] Nanchang Hangkong Univ, Prov Key Lab Ecol Diagnosis Remediat & Pollut Blo, Dept Environm & Chem Engn, Nanchang 330063, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2012年 / 18卷

基金：

中国国家自然科学基金;

关键词：

Heterogeneous photocatalysis; Graphene; Titania; Silica; Ordered mesoporous material; NANOCOMPOSITES; COPOLYMER; TRIBLOCK; SILICA;

D O I：

10.1016/j.catcom.2011.11.008

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Ordered mesoporous graphene-titania/silica composite material was prepared using a direct sol-gel co-condensation technique, and combined with hydrothermal treatment, in the presence of a triblock copolymer non-ionic surfactant P123 (EO20PO70EO20. EO= -OCH2CH2-, PO= -OCH(CH3)CH2-). The composite exhibited a two-dimensional (2D) hexagonal p6mm symmetry and anatase-phase structure with a large BET (Brunauer-Emmet-Teller) surface area and uniform pore size. The photocatalytic activity of the graphene-titania/silica composite was evaluated through the degradation of the aqueous organic pollutant atrazine and rhodamine B under solar-simulating Xe lamp irradiation. Enhanced photocatalytic activity compared with pure titania was obtained for the graphene-titania/silica sample. (C) 2011 Elsevier B.V. All rights reserved.

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页码：16 / 20

页数：5

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