title: Controllable synthesis of Cu2O petalody octahedral microcrystals and multi-patterned evolution.
abstract: The fabrication of cuprous oxide (Cu(2)O) with various morphologies has attracted extensive interest due to its applications in solar energy conversion, electrode materials, sensors, and catalysts. Herein, we report a facile controllable route for Cu(2)O microcrystals with various architectures via a hydrothermal method without using templates or surfactants. Six types of Cu(2)O microcrystals including petalody octahedral, concave truncated octahedron, truncated octahedron, octahedron, sphere-like, and sphere are obtained accompanying with Cu precipitation or urchin-like CuO particles due to the modifying of pH values. The petalody octahedral pattern of Cu(2)O is for the first time found here under the condition of pH 7-8. Additionally, possible growth mechanism for multi-patterned Cu(2)O and compositional evolution is discussed via preferential growths induced by selective absorption of acrylic acid and decomposition of lactic acid in the present reaction system. These experimental results prove a versatile and facile strategy for Cu(2)O microcrystals with special and complex architectures, which may highlights their potential applications due to the improved surface activity, catalytic, or photoelectric performance.
authors.affiliation: School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, China; School of Science, Harbin Institute of Technology, Harbin 150001, China.
authors.forename: Yanbo
authors.initials: Y
authors.lastname: Ding
authors.affiliation: Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, China.
authors.forename: Dengteng
authors.initials: D
authors.lastname: Ge
authors.affiliation: School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Lili
authors.initials: L
authors.lastname: Yang
authors.affiliation: Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, China.
authors.forename: Zhenyu
authors.initials: Z
authors.lastname: Li
authors.affiliation: Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, China.
authors.forename: Wuhong
authors.initials: W
authors.lastname: Xin
authors.affiliation: Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, China.
authors.forename: Yao
authors.initials: Y
authors.lastname: Li
authors.affiliation: School of Science, Harbin Institute of Technology, Harbin 150001, China.
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Wu
authors.affiliation: School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, China. Electronic address: jiupengzhao@126.com.
authors.forename: Jiupeng
authors.initials: J
authors.lastname: Zhao
mesh_terms: D003300:Copper / Q000737:chemistry*; D003460:Crystallization; D006863:Hydrogen-Ion Concentration; D010316:Particle Size; D013499:Surface Properties
chemical_list: D003300:Copper; C000520:cuprous oxide