Graphene Coating of TiO2 Nanoparticles Loaded on Mesoporous Silica for Enhancement of Photocatalytic Activity

被引：137

作者：

Kamegawa, Takashi ^{[1
]}

Yamahana, Daiki ^{[1
]}

Yamashita, Hiromi ^{[1
]}

机构：

[1] Osaka Univ, Div Mat & Mfg Sci, Grad Sch Engn, Suita, Osaka 5650871, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 35期

关键词：

TITANIUM(IV) OXIDE; CHARGE-TRANSFER; CARBON; DEGRADATION; SEMICONDUCTOR; REDUCTION;

D O I：

10.1021/jp105526d

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

TiO2 nanoparticles supported on a mesoporous silica surface (TiO2/MCM-41) were selectively coated with graphene through the formation of surface complexes between TiO2 nanoparticles and 2,3-dihydroxynaphthalene and following carbonization under N-2 flow. The pore structure as well as the high surface area of MCM-41 was retained even after carbonization at 1073 K. The selective graphene coating led to the enhancement of photocatalytic activities of TiO2/MCM-41 for the decomposition of 2-propanol in water compared with unmodified samples due to the appropriate adsorption properties of organics to transfer to the surface of TiO2 nanoparticles.

引用

页码：15049 / 15053

页数：5

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