标题:The high surface energy of NiO {110} facets incorporated into TiO2hollow microspheres by etching Ti plate for enhanced photocatalytic and photoelectrochemical activity
作者:Li, Jian ;Cui, Hongzhi ;Song, Xiaojie ;Wei, Na ;Tian, Jian
作者机构:[Li, Jian ;Cui, Hongzhi ;Song, Xiaojie ;Wei, Na ;Tian, Jian ] School of Materials Science and Engineering, Shandong University of Science and Technolo 更多
通讯作者:Cui, Hongzhi
来源:Applied Surface Science
出版年:2017
卷:396
页码:1539-1545
DOI:10.1016/j.apsusc.2016.11.205
摘要:We present a rational design for the controllable synthesis of NiO/TiO2hollow microspheres (NTHMs) with Ti plate via a one-pot template-free synthesis strategy. Specifically, to enhance the formation of hollow microspheres, part of the titanium source is provided by the Ti plate. The hollow spherical NiO/TiO2particles possess unique microstructural characteristics, namely, a higher specific surface area (∼65.82 m2g−1), a larger mesoporous structure (∼7.79 nm), and hierarchical nanoarchitectures connected with mesopores within the shell (monodispersed size of ∼1 μm and shell thickness of ∼80 nm). In addition, as a cocatalyst for improved catalytic activity, the incorporated NiO nanoparticles with exposed high surface energy {110} facets displayed an outstanding performance. It has been proven that this facile nanostructure possesses remarkably high photoelectrochemical and photocatalytic activities. The main mechanism for enhancement of photocatalytic activity is attributed to the construction of p-n junctions with an inner electric field between TiO2and NiO, which can dramatically enhance the separation efficiency of the photogenerated electron-hole pairs. This strategy could be applied to fabricate mixed metal oxide hollow microspheres toward the photoelectrochemical catalysis.
© 2016 Elsevier B.V.
收录类别:EI
资源类型:期刊论文
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