Graphene-supported mesoporous titania nanosheets for efficient photodegradation
Graphene-supported mesoporous titania nanosheets for efficient photodegradation
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石墨烯支撑的介孔二氧化钛纳米片可实现高效光降解
DOI：
10.1016/j.jcis.2017.06.063
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发表时间：
2017
影响因子：
9.9
通讯作者：
Yang Shubin
中科院分区：
文献类型：
--
作者：
Zhang Nan;Li Bin;Li Songmei;Yang Shubin
以液相剥离少层石墨烯为模板，三明治状石墨烯-二氧化硅为中间体，成功合成了石墨烯负载介孔二氧化钛纳米片（G-TiO2）。所制备的G-TiO2不仅继承了直接剥离的几层石墨烯的二维结构、高比表面积和大长径比，而且还具有介孔结构，纳米尺寸的晶体二氧化钛固定在石墨烯纳米片上。这种独特的特性可以显着增强TiO2的光催化活性，用于降解甲基橙（MO）、罗丹明B（RhB）和亚甲基蓝（MB）等有害有机化合物。
Graphene-supported mesoporous titania nanosheets (G-TiO2) were synthesized successfully by employing liquid-phase exfoliated few-layers graphene as a template and sandwich-like graphene-silica as intermediates. The as-prepared G-TiO2not only inherited the two-dimensional structure of directly exfoliated few-layers graphene, high specific surface areas and large aspect ratio, but also possessed a mesoporous structure with nano-sized crystalline titania being anchored on the graphene nanosheets. Such unique features could enhance significantly the photocatalytic activities of TiO2for degradating of hazardous organic compounds such as methyl orange (MO), rhodamine B (RhB) and methylene blue (MB).