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Self-assembly of 0D/2D homostructure for enhanced hydrogen evolution
Materials Today ( IF 26.416 ) Pub Date : 2020-03-05 , DOI: 10.1016/j.mattod.2020.02.006
Jianfang Zhang; Tianyu Zhu; Yan Wang; Jiewu Cui; Jian Sun; Jian Yan; Yongqiang Qin; Xia Shu; Yong Zhang; Jingjie Wu; Chandra Sekhar Tiwary; Pulickel M. Ajayan; Yucheng Wu

Efficient exfoliation of layered materials has attracted considerable attention in various applications due to their superior photoelectric, physical and chemical properties. Here, we report a universal, rapid approach to prepare the two-dimensional (2D) nanosheets and zero-dimensional (0D) quantum dots (QDs) using a simple cryo-mediation liquid phase exfoliation of layered materials (graphite, MoS2, WS2). The QDs decorated nanosheets 0D/2D homostructure can be subsequently formed by the self-assembly of the as-exfoliated QDs and nanosheets. The unique structural properties of the mono- or few-layer mesoporous nanosheets interspersed with QDs can expose abundant active edge sites as well as improve the conductivity, which exhibits excellent activity and stability towards electrocatalytic hydrogen evolution reaction (HER). This work offers a powerful methodology to prepare 2D homostructures from a variety of layered materials.

更新日期:2020-03-05

 

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