Assembly of Hierarchical SnO2 Nanoflakes via Partially Sacrificed ZnSnO3 Template and Its Gas Sensing Properties
Semiconductor oxides with hierarchically hollow or porous architectures are considered to be the ideal structure for the gas-sensing applications due to their efficiently high surface area and surface accessibility.Designed assembly of hierarchical nanostructures with well-defined shapes is of great scientific and practical value and remains a great challenge via a facile and low-cost method.This paper presents a new type of hierarchical ZnSnO3-SnO2 flower-shape nanostructure composed of thin nanoflakes as secondary units,which is successfully prepared through a simple hydrothermal process.The polyhedral ZnSnO3 core acts as a partially sacrificed template for the growth of hierarchical SnO2 nanoflakes,and the average thickness of SnO2 nanoflakes is around 25 nm.The time-dependent morphology evolution of ZnSnO3-SnO2 samples has been investigated,and a possible formation mechanism of these hierarchical structures is discussed.
ZnSnO3-SnO2 hierarchical nanostructure hydrothermal synthesis gas sensor
Yi Zeng Bing Yifei Liu Chang Zheng Weitao Zou Guangtian
Department of Materials Science, Key Laboratory of Automobile Materials of Ministry of Educations(MOE),State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
国际会议
上海
英文
156-156
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）