RGO/Ag2S/TiO2 ternary heterojunctions with highly enhanced UV-NIR photocatalytic activity and stability

Tongyao Liu, Bin Liu, Linfen Yang, Xinlong Ma, Hao Li, Shu Yin, Tsugio Sato, Tohru Sekino, Yuhua Wang

    Research output: Contribution to journalArticlepeer-review

    88 Citations (Scopus)

    Abstract

    A series of novel RGO/Ag2S/TiO2 heterostructure photocatalysts has been synthesized successfully by a facial hydrothermal and simple ionexchange method. During the preparation, the reduction of graphene oxide (GO) and growth of TiO2 and Ag2S are accomplished smoothly, and the functions of each part are developed well together. Compared with pure TiO2, Ag2S and Ag2S/TiO2 nanocomposite, the obtained 3 wt.% RGO/Ag2S/TiO2 nanocomposite exhibits a significant enhancement of ultraviolet (UV) and near-infrared (NIR) light photocatalytic activities. Owing to its extended photoresponsive range, great adsorptive property and efficient electron-hole separation capacity. Furthermore, benefited by the introduction of reduced graphite oxide (RGO), the deterioration of Ag2S is inhibited well and the stability of RGO/Ag2S/TiO2 nanocomposite has been enhanced greatly.

    Original languageEnglish
    Pages (from-to)593-601
    Number of pages9
    JournalApplied Catalysis B: Environmental
    Volume204
    DOIs
    Publication statusPublished - 2017 May 5

    Keywords

    • Heterostructures
    • Photocatalysis
    • Stability
    • UV-NIR light

    ASJC Scopus subject areas

    • Catalysis
    • Environmental Science(all)
    • Process Chemistry and Technology

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