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朱建君, 陈宇洋, 朱威研, 徐帆, 田秀丽, 杨宁. 石墨烯纳米复合物的制备及其可见光催化性能[J]. 信阳师范学院学报(自然科学版), 2018, 31(1): 78-82. DOI: 10.3969/j.issn.1003-0972.2018.01.015
引用本文: 朱建君, 陈宇洋, 朱威研, 徐帆, 田秀丽, 杨宁. 石墨烯纳米复合物的制备及其可见光催化性能[J]. 信阳师范学院学报(自然科学版), 2018, 31(1): 78-82. DOI: 10.3969/j.issn.1003-0972.2018.01.015
shu
ZHU Jianjun, CHEN Yuyang, ZHU Weiyan, XU Fan, TIAN Xiuli, YANG Ning. Preparation and Visible Light Photocatalytic Property of TiO2/Graphene Nanocomposites[J]. Journal of Xinyang Normal University (Natural Science Edition), 2018, 31(1): 78-82. DOI: 10.3969/j.issn.1003-0972.2018.01.015
Citation: ZHU Jianjun, CHEN Yuyang, ZHU Weiyan, XU Fan, TIAN Xiuli, YANG Ning. Preparation and Visible Light Photocatalytic Property of TiO2/Graphene Nanocomposites[J]. Journal of Xinyang Normal University (Natural Science Edition), 2018, 31(1): 78-82. DOI: 10.3969/j.issn.1003-0972.2018.01.015
shu

石墨烯纳米复合物的制备及其可见光催化性能

Preparation and Visible Light Photocatalytic Property of TiO2/Graphene Nanocomposites

    摘要
  • 摘要: 采用水热法制备出TiO2及其TiO2/石墨烯纳米复合物，通过XRD、SEM、TEM等对材料晶型、TiO2纳米颗粒在体系中的微观结构及分散状态进行了表征，利用紫外-可见漫反射谱对材料在可见光区的响应进行了研究，并通过在可见光照射下降解甲基橙溶液评价了TiO2/石墨烯纳米复合物具有比纯TiO2更高的光催化活性.结果表明，水热反应温度为200℃，反应时间为24 h制备出的TiO2/石墨烯纳米复合物具有最高的可见光催化活性，当TiO2/石墨烯纳米复合物在12 mg/L甲基橙溶液中的投入量为1 g/L时，在3 min内的降解率达99.9%.

     

    Abstract: A series of TiO2 and TiO2/graphene nanocomposites (TiO2/RGO) were prepared by the hydrothermal method, in which Ti(SO4)2 was used as precursor. The crystal phase, microstructure and dispersion of TiO2 in the prepared nanocomposites were characterized by XRD, SEM and TEM. The as-prepared nanocomposites were found to be of visible light response by means of UV-vis spectra analysis. The prepared TiO2/graphene nanocomposites showed higher photocatalytic activity in degradation of methyl orange under visible light irradiation than that of pure TiO2. The results showed that TiO2/graphene nanocomposites, which was prepared by hydrothermal method at 200℃ for 24 hours, exhibited the highest photocatalytic activity under the present conditions. Under visible light irradiation, the degradation rate of 12 mg/L methyl orange solution reached up to 99.9% within 3 minutes over 1 mg/mL TiO2/RGO photocatalysts.

     

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