二氧化锡
介孔材料
材料科学
纳米孔
多孔性
纳米技术
球体
化学工程
纳米颗粒
基质(水族馆)
千分尺
氧化锡
粒子(生态学)
单层
锡
甲烷
复合材料
化学
催化作用
有机化学
光电子学
兴奋剂
海洋学
冶金
天文
工程类
地质学
物理
光学
作者
Jan‐Henrik Smått,Mika Lindén,Thorsten Wagner,Claus-Dieter Kohl,Michael Tiemann
标识
DOI:10.1016/j.snb.2010.12.051
摘要
We report the synthesis of mesoporous tin dioxide (SnO2) materials with well-defined particle morphology. The products consist of uniform spheres with a diameter of 5 μm. The spheres are hierarchically porous with two distinct pore modes of 5.0 nm and 52 nm, respectively. This special porosity is the result of a synthesis procedure which involves a ‘hard templating’ (nanocasting) process. The product forms an approximately homogeneous monolayer of spheres on a sensor substrate and shows promising response to methane gas with low cross-sensitivity to water. The structural properties and gas-sensing performance are compared with a mesoporous SnO2 material without defined morphology, prepared by a ‘soft templating’ procedure.
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