Xing Huan, Wen Wei, Wu Jin-Ming
State Key Laboratory of Silicon Materials, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China.
College of Mechanical and Electrical Engineering, Hainan University, Haikou 570228, P. R. China.
Beilstein J Nanotechnol. 2018 May 24;9:1550-1557. doi: 10.3762/bjnano.9.146. eCollection 2018.
TiO(B) is usually adopted to construct phase junctions with anatase TiO for applications in photocatalysis to facilitate charge separation; its intrinsic photocatalytic activity, especially when in the form of one- or three-dimensional nanostructures, has been rarely reported. In this study, a sheet-on-belt branched TiO(B) powder was synthesized with the simultaneous incorporation of reduced graphene oxide (rGO). The monophase, hierarchically nanostructured TiO(B) exhibited a reaction rate constant 1.7 times that of TiO(B)/rGO and 2.9 times that of pristine TiO(B) nanobelts when utilized to assist the photodegradation of phenol in water under UV light illumination. The enhanced photocatalytic activity can be attributed to the significantly increased surface area and enhanced charge separation.
TiO(B)通常被用于与锐钛矿型TiO构建相结，以应用于光催化领域来促进电荷分离；其固有的光催化活性，尤其是以一维或三维纳米结构形式存在时，鲜有报道。在本研究中，合成了一种同时掺入还原氧化石墨烯（rGO）的带状片状分支TiO(B)粉末。当用于辅助紫外光照射下水中苯酚的光降解时，单相、具有分级纳米结构的TiO(B)表现出的反应速率常数是TiO(B)/rGO的1.7倍，是原始TiO(B)纳米带的2.9倍。光催化活性的增强可归因于表面积的显著增加和电荷分离的增强。
