【作者】 李可可； 张亚婷； 王露； 付世启； 初春凯； 周安宁；

【Author】 Keke Li;Yating Zhang;Lu Wang;Shiqi Fu;Chunkai Chu;Anning Zhou;College of Chemistry & Chemical Engineering,Xi’an University of Science and Technology;

【机构】 西安科技大学化学与化工学院；

【摘要】 本文通过水热法原位合成制备得到Cu/TiO₂/煤基石墨烯复合材料（CTG）,采用XRD、SEM、TEM等手段对样品结构、形貌等进行了表征和分析;进而以Cu/TiO₂/煤基石墨烯复合材料为光催化剂,在可见光条件下还原CO₂合成甲醇反应考察其光催化性能。结果表明,三元Cu/TiO₂/煤基石墨烯复合材料具有良好的光催化性能,当Cu/TiO₂/煤基石墨烯复合材料中Cu的负载比为2wt%时,目标产物甲醇的产率最高,可达94.79μm ol/g.cat,为同样条件下单独用煤基石墨烯作用时甲醇产率的5.0倍。更多还原

【Abstract】 In this Paper, we report a facile hydrothermal method toward in situ growth of ultradispersed Cu/TiO₂ nanoparticles on coal-based graphene composites（CTG）. The structure and morphology of composite materials were characterized by XRD, SEM and TEM, respectively. Then, the photocatalytic performance of CTG was evaluated based on photocatalytic reduction of CO₂ to methanol under sunlight irradiation. The results shown the yield of product methanol was highest when Cu contained in Cu/TiO₂/coal-based graphene composite was 2 wt% which showed a 5.0-fold increase in methanol productio n activity（94.79 μmol/g.cat） in comparison with coal-based graphene（19.05 μmol/g.cat） under the same condition s. This enhancement may be attributed to efficient charge transfer from TiO₂ to graphene and the synergic effect of TiO₂ and Cu nanoparticles.更多还原