Bi2WO6 quantum dots decorated reduced graphene oxide: Improved charge separation and enhanced photoconversion efficiency

Songmei Sun, Wenzhong Wang, Ling Zhang

    研究成果: Contribution to journalArticle査読

    121 被引用数 (Scopus)

    抄録

    In this study, Bi2WO6 quantum dots (QDs) decorating reduced graphene oxide (RGO) sheets were produced by a facile one-step hydrothermal synthesis process, which converts the reactant precursors to Bi2WO6 QDs and RGO simultaneously. The Bi 2WO6 QDs with a size of 3-5 nm anchored uniformly on the RGO sheets to form RGO-Bi2WO6 QDs composites. The RGO sheets not only acted as a supporter and stabilizer for the Bi 2WO6 QDs to prevent them from being aggregation but also largely improved the charge separation in the composite material. For this preponderance, the electron lifetime in the RGO-Bi2WO6 QDs composites was increased 8-fold compared with that of the pure Bi 2WO6 QDs. The much enhanced lifetime improved its performance in environmental purification and photovoltaic conversion under the irradiation of simulated sun light. This work not only provides a principle method to produce graphene-composited multiple metal oxide QDs by one-step process but also a route to obtain efficient functional material for environmental purification and optoelectronic applications.

    本文言語英語
    ページ(範囲)9113-9120
    ページ数8
    ジャーナルJournal of Physical Chemistry C
    117
    18
    DOI
    出版ステータス出版済み - 5 9 2013

    All Science Journal Classification (ASJC) codes

    • 電子材料、光学材料、および磁性材料
    • エネルギー(全般)
    • 物理化学および理論化学
    • 表面、皮膜および薄膜

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