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Three-Dimensional Graphene-TiO₂ Nanocomposite Photocatalyst Synthesized by Covalent Attachment.

ABSTRACT: We report the synthesis of a three-dimensional graphene (3DG)-TiO₂ nanocomposite by covalently attaching P25 TiO₂ nanoparticles onto pristine 3DG through a perfluorophenyl azide-mediated coupling reaction. The TiO₂ nanoparticles were robustly attached on the 3DG surface, with minimal particle agglomeration. In photocatalytic CO₂ reduction, the 3DG-TiO₂ nanocomposite demonstrated excellent activity, about 11 times higher than that of the P25 TiO₂ nanoparticles. The enhanced activity can be partially attributed to the highly dispersed state of the P25 TiO₂ nanoparticles on the 3DG substrate. This 3DG-based system offers a new platform for fabricating photocatalytic materials with enhanced activities.

SUBMITTER: Park J

PROVIDER: S-EPMC6640790 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature

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Three-Dimensional Graphene-TiO2 Nanocomposite Photocatalyst Synthesized by Covalent Attachment.

Park Jaehyeung J Jin Tong T Liu Chao C Li Gonghu G Yan Mingdi M

ACS omega 20160907 3

We report the synthesis of a three-dimensional graphene (3DG)-TiO2 nanocomposite by covalently attaching P25 TiO2 nanoparticles onto pristine 3DG through a perfluorophenyl azide-mediated coupling reaction. The TiO2 nanoparticles were robustly attached on the 3DG surface, with minimal particle agglomeration. In photocatalytic CO2 reduction, the 3DG-TiO2 nanocomposite demonstrated excellent activity, about 11 times higher than that of the P25 ...[more]

PMID: 31457133

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