title: Facile synthesis of porous single crystalline ZnO nanoplates and their application in photocatalytic reduction of Cr(VI) in the presence of phenol.
abstract: Porous single crystalline ZnO nanoplates were successfully synthesized through a facile and cost-effective hydrothermal process at low temperature condition, followed by annealing of the zinc carbonate hydroxide hydrate precursors. The as-prepared products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Brunauer-Emmett-Teller (BET) measurements. The porous single crystalline ZnO nanoplates are with 12nm thickness and pore ranging from 10nm to several tens of nanometers. The porous structure of the ZnO nanoplates caused large amount of surface defects which worked as photogenerated holes' shallow trappers and largely restrained the recombination of photogenerated electrons and holes, resulting in a significantly high photocatalytic activity and durability toward the photoreduction of Cr(VI) under UV irradiation. Moreover, a synergistic effect, that is, increased photocatalytic reduction of Cr(VI) and degradation of phenol, can be observed. Furthermore, the synergistic photocatalytic mechanism has also been discussed. Those results present an enlightenment to employ porous single crystalline nanomaterials to remove Cr(VI) and organic pollutants simultaneously.
authors.affiliation: Research Center for Biomimetic Functional Materials and Sensing Devices, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Jin
authors.affiliation: School of Physics and Electronic Information, Huaibei Normal University, Huaibei, Anhui 235000, PR China.
authors.forename: Yong-Xing
authors.initials: YX
authors.lastname: Zhang
authors.affiliation: Research Center for Biomimetic Functional Materials and Sensing Devices, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China.
authors.forename: Fan-Li
authors.initials: FL
authors.lastname: Meng
authors.affiliation: Research Center for Biomimetic Functional Materials and Sensing Devices, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Jia
authors.affiliation: Research Center for Biomimetic Functional Materials and Sensing Devices, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China.
authors.forename: Tao
authors.initials: T
authors.lastname: Luo
authors.affiliation: Research Center for Biomimetic Functional Materials and Sensing Devices, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China.
authors.forename: Xin-Yao
authors.initials: XY
authors.lastname: Yu
authors.affiliation: Research Center for Biomimetic Functional Materials and Sensing Devices, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China.
authors.forename: Jin
authors.initials: J
authors.lastname: Wang
authors.affiliation: Research Center for Biomimetic Functional Materials and Sensing Devices, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China.
authors.forename: Jin-Huai
authors.initials: JH
authors.lastname: Liu
authors.affiliation: Research Center for Biomimetic Functional Materials and Sensing Devices, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China. Electronic address: xingjiuhuang@iim.ac.cn.
authors.forename: Xing-Jiu
authors.initials: XJ
authors.lastname: Huang
mesh_terms: D002384:Catalysis; D002857:Chromium / Q000737:chemistry*; D008854:Microscopy, Electron; D049329:Nanostructures; D019800:Phenol / Q000737:chemistry*; D010777:Photochemistry; D014961:X-Ray Diffraction; D015034:Zinc Oxide / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D002857:Chromium; D019800:Phenol; D015034:Zinc Oxide
keywords: Cr(VI) photoreduction; Phenol; Photocatalysis; Porous single crystalline; ZnO