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    王旭珍

    • 教授     博士生导师   硕士生导师
    • 性别:女
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:化学学院
    • 学科:物理化学. 化学工艺
    • 办公地点:西校区化工综合楼C202
    • 联系方式:0411-84986073
    • 电子邮箱:xzwang@dlut.edu.cn

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    Layer-dependent catalysis of MoS2/graphene nanoribbon composites for efficient hydrodesulfurization

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    论文类型:期刊论文

    第一作者:Yang, Lan

    合写作者:Wang, Xuzhen,Liu, Yang,Yu, Zhengfa,Li, Rui,Qiu, Jieshan

    发表时间:2017-02-07

    发表刊物:CATALYSIS SCIENCE & TECHNOLOGY

    收录刊物:SCIE、EI

    卷号:7

    期号:3

    页面范围:693-702

    ISSN号:2044-4753

    摘要:Graphene nanoribbons (GNRs) derived from the unzipping of carbon nanotubes are used as a catalyst carrier for MoS2 with different layers via a facile solution route. Efficient hydrodesulfurization (HDS) of carbonyl sulfide (COS) has been achieved over the MoS2/GNR composites. It is revealed that single layer MoS2 anchored on GNRs (SL-MoS2/GNRs) is successfully fabricated by the assistance of cetyltrimethylammonium bromide (CTAB). The catalytic activities of the SL-MoS2/GNRs, few-layer MoS2 supported on GNRs (FLMoS2/GNRs) and pure MoS2 with a multi-layer structure (ML-MoS2) are investigated, and the layerdependent catalytic activity of MoS2 has been demonstrated in the hydrogenation of COS. The order of the catalytic performance for the three catalysts is SL-MoS2/GNRs > FL-MoS2/GNRs > ML-MoS2, especially within a low temperature range (180-280 degrees C) of the HDS reaction. The superior catalytic activity of SLMoS2/GNRs can be ascribed to the high density of the active sites in single-layer MoS2. Due to the edge effect of GNRs, single layer MoS2 supported on GNRs is thinner and shorter than MoS2 anchored on graphene nanosheets (GS). The synergy between single layer MoS2 and GNRs may be mainly responsible for the better catalytic performance of SL-MoS2/GNRs. This work offers a feasible strategy for the synthesis of single-layer MoS2 supported on GNRs for efficient HDS application.