title: Piezotronic Effect Enhanced Photocatalysis in Strained Anisotropic ZnO/TiO₂ Nanoplatelets via Thermal Stress.
abstract: Effective piezoelectric semiconductor based hybrid photocatalysts are successfully developed by assembling TiO2 nanoparticles on ZnO monocrystalline nanoplatelets. The piezopotential can be introduced and tuned by thermal stress on the piezoelectric material of ZnO monocrystalline nanoplatelets through cooling hybrid photocatalysts from high temperature to room temperature with different rates based on the mismatched thermal expansion coefficient of the two materials, which can be used to engineer the heterojunction band structure and significantly enhance the photocatalytic performance in a wide range by improving charge separation. It is proposed that the piezotronic effect enhanced photocatalyst will provide a strategy for high-performance photocatalysis applications.
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences; National Center for Nanoscience and Technology (NCNST) , Beijing 100083, China.
authors.forename: Longfei
authors.initials: L
authors.lastname: Wang
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences; National Center for Nanoscience and Technology (NCNST) , Beijing 100083, China.
authors.forename: Shuhai
authors.initials: S
authors.lastname: Liu
authors.affiliation: Institute of Nanoscience and Nanotechnology, School of Physical Science and Technology, Lanzhou University , Gansu 730000, China.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences; National Center for Nanoscience and Technology (NCNST) , Beijing 100083, China.
authors.forename: Yongli
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences; National Center for Nanoscience and Technology (NCNST) , Beijing 100083, China.|Institute of Nanoscience and Nanotechnology, School of Physical Science and Technology, Lanzhou University , Gansu 730000, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Qin
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences; National Center for Nanoscience and Technology (NCNST) , Beijing 100083, China.|School of Material Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States.
authors.forename: Zhong Lin
authors.initials: ZL
authors.lastname: Wang
keywords: ZnO/TiO2 heterojunction; nanoplatelet; photocatalysis; piezoelectric; piezotronic effect