朱慧超

个人信息Personal Information

副教授

硕士生导师

性别:男

毕业院校:吉林大学

学位:博士

所在单位:控制科学与工程学院

学科:检测技术与自动化装置. 模式识别与智能系统. 导航、制导与控制

办公地点:海山楼A1117

联系方式:zhuhuichao@dlut.edu.cn

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Synthesis and gas sensing properties of biomorphic SnO2 derived from loofah sponge and eggshell membrane

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论文类型:期刊论文

发表时间:2015-12-01

发表刊物:JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS

收录刊物:SCIE、EI、Scopus

卷号:26

期号:12,SI

页面范围:9561-9570

ISSN号:0957-4522

摘要:Biomorphic SnO2 was synthesized through a sol-gel approach combined with an infiltration process and a calcination treatment. This synthesis route adopted loofah sponge (LS) and eggshell membrane (ESM) as a template respectively, which was proved low-cost and environmentally friendly. Based on TG/DTA analysis, the calcination temperature was decided to be 550 A degrees C. XRD and TEM patterns confirmed the tetragonal rutile structure of SnO2. FESEM characterization revealed that the SnO2 fibers were made of nanoparticles (average particle size: similar to 8 nm) and faithfully duplicated the same confirmations of natural templates. The gas sensing properties of as-prepared SnO2 were investigated using different gases such as ethanol, methanol and acetone, etc. The optimal working temperature for LS-template SnO2 was 250 A degrees C, which was relatively lower than the case of ESM-template SnO2 (300 A degrees C). Compared with ESM-template SnO2, LS-template SnO2 showed higher response, better selectivity and stability to ethanol, which was mainly due to the three-dimensional, hierarchical and hollow structure. Synthesis mechanism and gas sensing mechanism of LS-template SnO2 were also discussed.