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Synthesis and Characterization of Y-Doped SnO_2 as Sensor Materials
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作者 李超 毕磊 +4 位作者 方少明 徐甲强 桂阳海 吴诗德 陈荣峰 《Journal of Rare Earths》 SCIE EI CAS CSCD 2007年第S1期505-507,共3页
Yttrium-doped SnO2 powders were successfully synthesized by solution co-precipitation method and characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The sensitivity of sensors based on... Yttrium-doped SnO2 powders were successfully synthesized by solution co-precipitation method and characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The sensitivity of sensors based on Y-doped SnO2 and SnO2 nanocrystals were investigated comparatively. The results indicated that Y-doped SnO2 was with the result of enhancement of sensitivity and selectivity to ethanol and reduction of sensitivity to other gas components. The enhancements of selectivity and sensitivity could be contributed to for two reasons. The first is that rare metal yttrium has a high alkalescence and good catalysis, and the second is that the nanosized crystallite and large specific surface area of Y-doped SnO2 is advantageous for gas-diffusion control as well as an increase in active sites for gas detection. 展开更多
关键词 Y-doped SnO_2 co-precipitation method sensor material sensitivity properties rare earths
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Biologically Enabled Syntheses of Nanostructured 3-D Sensor Materials:the Potential for 3-D Genetically Engineered Microdevices (3-D GEMs)
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作者 Kenneth H. Sandhage Samuel Shian +11 位作者 Christopher S. Gaddis Michael R. Weatherspoon Ye Cai Sehoon Yoo Michael S. Haluska Robert L. Snyder Ying Liu Meilin Liu Nicholas Ferrell Derek J. Hansford Mark Hildebrand Brian Palenik 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2006年第A03期13-14,共2页
Three-dimensional (3-D)self-assembly of nanos- tructures and nanodevices on a large scale remains a grand quest for mankind.Freestanding nanostructured assemblies with controlled 3-D shapes can exhibit attractive prop... Three-dimensional (3-D)self-assembly of nanos- tructures and nanodevices on a large scale remains a grand quest for mankind.Freestanding nanostructured assemblies with controlled 3-D shapes can exhibit attractive properties for sensor and other applications. Protocols for 3-D self-assembly that can be scaled up for mass production on a large up to tonnage)scale, while preserving morphological features on a small (down to nanometer)scale,are needed to allow for widespread use of 3-D nanostructures in advanced devices.However,these often conflicting requirements of scalability and precision pose a difficult challenge for synthetic (man-made)processing routes. 展开更多
关键词 D GEMs Biologically Enabled Syntheses of Nanostructured 3-D sensor materials
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掺杂金属氧化物对CuO气敏性能的影响 被引量:1
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作者 王寅淳 郭金枝 侯振雨 《河南科技学院学报》 2006年第2期65-67,共3页
对CuO材料进行掺杂金属氧化物试验,并用乙醇、甲醛、液化气、汽油、氢气等气氛进行气敏试验,结果表明,合适的掺杂原料不仅可以改变氧化铜气敏元件的灵敏度,而且可以提高氧化铜气敏元件的选择性。
关键词 金属氧化物 CUO 掺杂 气敏材料 气敏传感器
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Mesoporous tin oxide nanospheres for a NO_x in air sensor 被引量:1
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作者 Haonan Zhang Ming Zhuo +1 位作者 Yazi Luo Yuejiao Chen 《Journal of Semiconductors》 EI CAS CSCD 2017年第2期20-25,共6页
Mesoporous tin oxide(SnO_2/ with a high surface area of 147.5 m^2/g has been successfully synthesized via self-assembly process, combining the driven forces of water-evaporation and molecular interactions. Scanning e... Mesoporous tin oxide(SnO_2/ with a high surface area of 147.5 m^2/g has been successfully synthesized via self-assembly process, combining the driven forces of water-evaporation and molecular interactions. Scanning electron microscope, X-ray diffraction, transmission electron micrograph, Fourier transform infrared and BrunauerEmmett-Teller were employed to analyze the morphology and crystal structure of the as-synthesized mesoporous materials. As a gas sensor, mesoporous SnO_2 shows impressive performances towards NOx gas with high selectivity and stability as well as ultra high sensitivity about 94.3 to 10 ppm NO_x gas at 300 ℃. The best response time of the sample S-500 is about 3.4 s to 10 ppm NO_x at 450℃. 展开更多
关键词 mesoporous materials tin oxide sensor nanospheres
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