Room-temperature hydrogen sensing performance of Nb(2)O(5) nanorod arrays.
Room-temperature hydrogen sensing performance of Nb(2)O(5) nanorod arrays.
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Nb2O5纳米棒阵列的室温氢传感性能
DOI：
10.1039/c8ra02329h
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发表时间：
2018-05-03
期刊：
影响因子：
3.9
通讯作者：
Gu, Qibin
中科院分区：
文献类型：
--
作者：
Zou, Yanan;He, Jing;Hu, Yongming;Huang, Rui;Wang, Zhao;Gu, Qibin
采用水热法在铌箔上原位生长了六方相的Nb2O5纳米棒阵列。随着反应温度的升高，Nb2O5纳米棒的长径比和间距增大。将一对铂电极沉积在Nb2O5纳米棒阵列表面，形成氢传感器。基于Nb2O5纳米棒阵列的传感器在室温下对氢气的响应速度快，灵敏度为74.3%，响应时间为28 s。Nb2O5纳米棒阵列对c2h60、CO和NH3也有良好的选择性。其传感氢的性能可归因于化学吸附的氧与H2之间的反应。Nb2O5纳米棒具有高长宽比，导致[001]取向纳米棒表面化学吸附的氧增加。此外，具有垂直结构的阵列具有较少数量的结，这使得氧离子更容易扩散。
Nb2O5 nanorod arrays with a hexagonal phase were in situ grown on Nb foil via a facile hydrothermal method. The aspect ratio and spacing of the Nb2O5 nanorods increased upon an increase in the reaction temperature. A pair of platinum electrodes was deposited on the surface of the Nb2O5 nanorod arrays to form a hydrogen sensor. The sensor based on Nb2O5 nanorod arrays exhibited a fast and highly-sensitive hydrogen response with a sensitivity of 74.3% and a response time of 28 s toward 6000 ppm of H2 at room temperature. The Nb2O5 nanorod arrays also showed good selectivity of H2 against C2H6O, CO and NH3. The hydrogen sensing performance can be attributed to the reaction between chemisorbed oxygen species and H2. The Nb2O5 nanorods have a high aspect ratio, leading to an increase in the chemisorbed oxygen species on the surface of the [001] orientated nanorods. Moreover, arrays with a vertical structure have low quantities of junctions, which allow oxygen ions to diffuse more easily.
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基于半导体氧化物纳米结构的氢气传感器
DOI：
10.3390/s120505517
发表时间：
2012
期刊：
Sensors (Basel, Switzerland)
影响因子：
--
作者：
Gu H;Wang Z;Hu Y
通讯作者：
Hu Y
影响因子：
8.4
作者：
Varghese, OK;Gong, DW;Grimes, CA
通讯作者：
Grimes, CA
影响因子：
8.4
作者：
Lee, Jiwon;Kim, Dai Hong;Jho, Jae Young
通讯作者：
Jho, Jae Young
影响因子：
3.5
作者：
Park, Sunghoon;Kheel, Hyejoon;Lee, Chongmu
通讯作者：
Lee, Chongmu
影响因子：
8.4
作者：
Andio, Mark A.;Browning, Paul N.;Akbar, Sheikh A.
通讯作者：
Akbar, Sheikh A.