Exfoliation of graphite into graphene in aqueous solution: an application as graphene/TiO2 nanocomposite to improve visible light photocatalytic activity

被引：25

作者：

Giovannetti, R. ^{[1
]}

Rommozzi, E. ^{[1
]}

Zannotti, M. ^{[1
]}

D'Amato, C. A. ^{[1
]}

Ferraro, S. ^{[1
]}

Cespi, M. ^{[2
]}

Bonacucina, G. ^{[2
]}

Minicucci, M. ^{[3
]}

Di Cicco, A. ^{[3
]}

机构：

[1] Univ Camerino, Div Chem, Sch Sci & Technol, Via S Agostino 1, I-62032 Camerino, Italy

[2] Univ Camerino, Sch Pharm, Via S Agostino 1, I-62032 Camerino, Italy

[3] Univ Camerino, Div Phys, Sch Sci & Technol, Via Madonna Carceri 9, I-62032 Camerino, Italy

来源：

RSC ADVANCES | 2016年 / 6卷 / 95期

关键词：

DEGRADATION; PERFORMANCE; NANOPARTICLES; COMPOSITES; DYES;

D O I：

10.1039/c6ra07617c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The aim of this study was the preparation of a graphene/TiO2 heterogeneous catalyst supported on polypropylene for visible light photocatalysis. Aqueous graphene dispersions were prepared by liquid-phase exfoliation of graphite in the presence of a non-ionic surfactant, Triton X-100. The obtained graphene dispersion was characterized by X-ray diffraction, dynamic light scattering and UV-Visible spectroscopy and was subsequently used for the preparation of graphene/TiO2 photocatalyst. As-prepared photocatalysts were tested for the photocatalytic degradation of a refractory dye, Alizarin Red S, in water solutions as target pollutant. Graphene/TiO2 nanocomposites showed higher adsorption of Alizarin Red S on the catalyst surface and higher photocatalytic activity for its degradation under visible light irradiation, in respect to those obtained with pure TiO2.

引用

页码：93048 / 93055

页数：8

共 36 条

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