Graphene-supported mesoporous titania nanosheets for efficient photodegradation

Nan Zhang; Bin Li; Songmei Li; Shubin Yang

doi:10.1016/j.jcis.2017.06.063

Graphene-supported mesoporous titania nanosheets for efficient photodegradation

J Colloid Interface Sci. 2017 Nov 1:505:711-718. doi: 10.1016/j.jcis.2017.06.063. Epub 2017 Jun 20.

Authors

Nan Zhang¹, Bin Li¹, Songmei Li², Shubin Yang³

Affiliations

¹ Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Materials Science & Engineering, Beihang University, Beijing 100191, China.
² Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Materials Science & Engineering, Beihang University, Beijing 100191, China. Electronic address: songmei_li@buaa.edu.cn.
³ Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Materials Science & Engineering, Beihang University, Beijing 100191, China. Electronic address: yangshubin@buaa.edu.cn.

PMID: 28662473
DOI: 10.1016/j.jcis.2017.06.063

Abstract

Graphene-supported mesoporous titania nanosheets (G-TiO₂) were synthesized successfully by employing liquid-phase exfoliated few-layers graphene as a template and sandwich-like graphene-silica as intermediates. The as-prepared G-TiO₂ not only inherited the two-dimensional structure of directly exfoliated few-layers graphene, high specific surface areas and large aspect ratio, but also possessed a mesoporous structure with nano-sized crystalline titania being anchored on the graphene nanosheets. Such unique features could enhance significantly the photocatalytic activities of TiO₂ for degradating of hazardous organic compounds such as methyl orange (MO), rhodamine B (RhB) and methylene blue (MB).

Keywords: Graphene; High specific surface area; Mesoporous titania; Nanosheets; Photocatalytic degradation.