Hydrogen Gas Detection of Nb2O5 Nanoparticle-Decorated CuO Nanorod Sensors
Hydrogen Gas Detection of Nb2O5 Nanoparticle-Decorated CuO Nanorod Sensors
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DOI：
10.1007/s12540-017-6343-3
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发表时间：
2017-01-01
影响因子：
3.5
通讯作者：
Lee, Chongmu
中科院分区：
文献类型：
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作者：
Kheel, Hyejoon;Sun, Gun-Joo;Lee, Chongmu
通过两步过程成功制备了原始和 Nb2O5 纳米颗粒装饰的 CuO 纳米棒：热蒸发铜箔，将 NbCl5 溶液旋涂在 CuO 纳米棒上，然后进行热退火。进行 X 射线衍射来检查合成纳米结构的结构和纯度。使用扫描电子显微镜检查纳米结构的形态和形状。 Nb2O5纳米粒子修饰的CuO纳米棒传感器在300℃的最佳工作温度下，对浓度在0.5-5%范围内的H-2气体表现出类似于217.05-862.54%的响应、类似于161-199 s的响应时间和类似于463-171 s的恢复时间。纳米棒 对于相同的 H-2 浓度范围，传感器表现出优于原始 CuO 纳米棒传感器的传感性能。讨论了 Nb2O5 纳米颗粒修饰的 CuO 纳米棒增强氢传感性能的基本机制。
Pristine and Nb2O5 nanoparticles-decorated CuO nanorods were prepared successfully by a two step process: the thermal evaporation of a Cu foil and the spin coating of NbCl5 solution on CuO nanorods followed by thermal annealing. X-ray diffraction was performed to examine the structure and purity of the synthesized nanoatuctures. Scanning electron microscopy was used to examine the morphology and shape of the nanostuctures. The Nb2O5 nanoparticles-decorated CuO nanorod sensor showed responses of similar to 217.05-862.54%, response times of similar to 161-199 s and recovery times of similar to 463-171 s toward H-2 gas with concentrations in a range of 0.5 - 5% at the optimal working temperature of 300 degrees C. The Nb2O5 nanoparticle-decorated CuO nanorod sensor showed superior sensing performance to the pristine CuO nanorod sensor for the same H-2 concentration range. The underlying mechanism for the enhanced hydrogen sensing performance of the CuO nanorods decorated with Nb2O5 nanoparticles is discussed.