Outstanding H2 Sensing Performance of Pd Nanoparticle-Decorated ZnO Nanorod Arrays and the Temperature-Dependent Sensing Mechanisms

2012 ◽  
Vol 5 (1) ◽  
pp. 135-143 ◽  
Author(s):  
Chia-Ming Chang ◽  
Min-Hsiung Hon ◽  
Ing-Chi Leu
Keyword(s):  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
Temperature Dependent ◽  
Pd Nanoparticle ◽  
Sensing Performance

Highly sensitive, temperature-dependent gas sensor based on hierarchical ZnO nanorod arrays

2015 ◽  
Vol 3 (43) ◽  
pp. 11397-11405 ◽  
Author(s):  
Xiaomei Wang ◽  
Fazhe Sun ◽  
Yongqing Duan ◽  
Zhouping Yin ◽  
Wei Luo ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Process Parameters ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
Optimal Process ◽  
Temperature Dependent ◽  
Measuring Range ◽  
Highly Sensitive ◽  
Gas Response

The hierarchical ZnO-NAs sensor shows highly sensitive, repeatable on–off cycles and temperature dependent response to NO2. The optimal process parameters of the MES-CHSM are presented to achieve optimal morphology, enlarge gas response and measuring range.

CdO nanoflake arrays on ZnO nanorod arrays for efficient detection of diethyl ether

RSC Advances ◽  
2016 ◽  
Vol 6 (3) ◽  
pp. 2500-2503 ◽  
Author(s):  
Sheng-Guang Ban ◽  
Xiao-Hua Liu ◽  
Tao Ling ◽  
Cun-Ku Dong ◽  
Jing Yang ◽  
...  
Keyword(s):  
Double Layer ◽  
Diethyl Ether ◽  
Gas Sensing ◽  
Layer Structure ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
Double Layer Structure ◽  
Efficient Detection ◽  
Sensing Performance

A double layer structure, CdO porous nanoflake arrays on ZnO nanorod arrays, was fabricated and achieved excellent gas-sensing performance upon exposure to diethyl ether.

scholarly journals Heterostructured NiO/ZnO Nanorod Arrays with Significantly Enhanced H2S Sensing Performance

Nanomaterials ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 900 ◽  
Author(s):  
Dongyi Ao ◽  
Zhijie Li ◽  
Yongqing Fu ◽  
Yongliang Tang ◽  
Shengnan Yan ◽  
...  
Keyword(s):  
Limit Of Detection ◽  
Operating Temperature ◽  
Synthesis Method ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
H2s Gas Sensor ◽  
Type Semiconductor ◽  
P Type ◽  
Sensing Performance

H2S gas sensors were fabricated using p-n heterojunctions of NiO/ZnO, in which the ZnO nanorod arrays were wrapped with NiO nanosheets via a hydrothermal synthesis method. When the H2S gas molecules were adsorbed and then oxidized on the ZnO surfaces, the free electrons were released. The increase in the electron concentration on the ZnO boosts the transport speed of the electrons on both sides of the NiO/ZnO p-n junction, which significantly improved the sensing performance and selectivity for H2S detection, if compared with sensors using the pure ZnO nanorod arrays. The response to 20 ppm of H2S was 21.3 at 160 °C for the heterostructured NiO/ZnO sensor, and the limit of detection was 0.1 ppm. We found that when the sensor was exposed to H2S at an operating temperature below 160 °C, the resistance of the sensor significantly decreased, indicating its n-type semiconductor nature, whereas when the operating temperature was above 160 °C, the resistance significantly increased, indicating its p-type semiconductor nature. The sensing mechanism of the NiO/ZnO heterostructured H2S gas sensor was discussed in detail.

In-situ growth of ordered Pd-doped ZnO nanorod arrays on ceramic tube with enhanced trimethylamine sensing performance

2019 ◽  
Vol 463 ◽  
pp. 348-356 ◽  
Author(s):  
Dan Meng ◽  
Dongyu Liu ◽  
Guosheng Wang ◽  
Yanbai Shen ◽  
Xiaoguang San ◽  
...  
Keyword(s):  
Zno Nanorod ◽  
In Situ Growth ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
Ceramic Tube ◽  
Doped Zno ◽  
Sensing Performance
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