Effect of conjugation degree and delocalized Π-system on the photocatalytic activity of single layer g-C3N4

Anye Shi, Huihui Li, Shu Yin, Bin Liu, Jiachi Zhang, Yuhua Wang

    研究成果: Article査読

    56 被引用数 (Scopus)

    抄録

    Single layer g-C3N4 could be obtained from a protonic acid treatment of g-C3N4 or a new sandwich-like orientation growth of melamine. Through the self-assembly of melamine and polyacrylamide by hydrogen bonds and electrostatic interactions, g-C3N4, with extended planarized atomic single layer, exhibits superiority in both photocatalytic hydrogen evolution and photocatalytic degradation under visible light irradiation. Besides low efficiency, the acid exfoliation will destroy the delocalized π-system by inducing O atoms. The decrease of conjugation degree increases the optical gaps, making it hard for g-C3N4 to capture photons. On the contrary, the facile sandwich-like orientation growth of melamine highly keeps the conjugation degree of g-C3N4 and extends its delocalized π-system. Such single layer g-C3N4 is more active even better than N-doped TiO2 under visible light irradiation.

    本文言語English
    ページ(範囲)137-146
    ページ数10
    ジャーナルApplied Catalysis B: Environmental
    218
    DOI
    出版ステータスPublished - 2017

    ASJC Scopus subject areas

    • 触媒
    • 環境科学(全般)
    • プロセス化学およびプロセス工学

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