纳米棒
异质结
材料科学
光催化
光电流
纳米纤维
纳米技术
氧化物
热液循环
静电纺丝
化学工程
光电子学
催化作用
复合材料
化学
有机化学
聚合物
冶金
工程类
作者
Meng Shang,Wenzhong Wang,Wenzong Yin,Jia Ren,Songmei Sun,Ling Zhang
标识
DOI:10.1002/chem.201000639
摘要
Abstract The preparation and characterization of a branched nanofiber–nanorod hierarchical heterostructure fabric (TiO 2 /NiO, TiO 2 /ZnO, and TiO 2 /SnO 2 ) are described. The nanomaterial was synthesized on a large scale by an inexpensive, generalizable, facile, and controllable approach by combining the electrospinning technique with a hydrothermal method. The controllable formation process and factors (assistance by hexamethylenetetramine and metal oxide nuclei) influencing the morphology of the branched hierarchical heterostructure are discussed. In addition, photocurrent and photocatalytic studies suggest that the branched hierarchical heterostructure fabric shows higher mobility of charge carriers and enhanced photocatalytic activity relative to a bare TiO 2 nanofibrous mat and other heterostructures under irradiation by light. This work demonstrates the possibility of growing branched heterostructure fabrics of various uniform, one‐dimensional, functional metal oxide nanorods on a TiO 2 nanofibrous mat, which has a tunable morphology by changing the precursor. The study may open a new channel for building hierarchical heterostructure device fabrics with optical and catalytic properties, and allow the realization of a new class of nano‐heterostructure devices.
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