Fabrication and characterization of SnO2 nano-spheres for hydrogen detection
This paper demonstrates a novel chemical vapor deposition strategy of tin oxide (SnO2) by vapor phase materials reaction at room temperature,and presents the applications to hydrogen detection using this material.Tin chloride anhydrate was used as the precursor,and it reacted with NH3 to form Sn(OH)4 nano-spheres.The samples with Sn(OH)4 nano-spheres were subject to drying up at 80°C,then they transformed to polycrystalline SnO2 nano-spheres.The X-ray diffraction (XRD) measurement was carried out to investigate the structural properties of the SnO2 films annealed at various temperatures.The morphology of the samples was investigated by field-emission scanning electron microscopy (FESEM).Micro-pellistor was fabricated based on the SnO2 catalyst for hydrogen detection.Compared with the traditional method to make SnO2 sensing material (hydrolysis of SnCl4·5H2O in basic solutions),the SnO2 nano-spheres prepared by this method has a higher relative sensitivity and a good linearity for the concentration of H2 ranging from 0 to 4%v/v.A short response time about 6s was achieved.
Tin oxide Nano-sphere CVD method hydrogen sensing
Xifeng Liu Hanpeng Dong Chao Bian Jianhua Tong Jizhou Sun Xiuli He Shanhong Xia
State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy ofSciences, State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy ofSciences,
国际会议
中国微米纳米技术学会第14届学术年会、第3届国际年会暨第6届微米纳米技术“创新与产业化国际研讨与展览会(CSMNT2012 & ICMAN2012)
杭州
英文
1-5
2012-11-04（万方平台首次上网日期，不代表论文的发表时间）