Pd nanoparticles incorporated porous silicon/V2O5 nanopillars and their enhanced p-type NO2-sensing properties at room temperature

2018 ◽  
Vol 231 ◽  
pp. 194-197 ◽  
Author(s):  
Xiaoyong Qiang ◽  
Ming Hu ◽  
Liwei Zhou ◽  
Jiran Liang
Keyword(s):  
Porous Silicon ◽  
Room Temperature ◽  
Pd Nanoparticles ◽  
Sensing Properties ◽  
P Type

Room temperature NO2-sensing properties of porous silicon/tungsten oxide nanorods composite

2015 ◽  
Vol 640 ◽  
pp. 517-524 ◽  
Author(s):  
Yulong Wei ◽  
Ming Hu ◽  
Dengfeng Wang ◽  
Weiyi Zhang ◽  
Yuxiang Qin
Keyword(s):  
Porous Silicon ◽  
Tungsten Oxide ◽  
Room Temperature ◽  
Sensing Properties ◽  
Oxide Nanorods

Preparation of porous silicon/Pd-loaded WO 3 nanowires for enhancement of ammonia sensing properties at room temperature

2018 ◽  
Vol 79 ◽  
pp. 113-118 ◽  
Author(s):  
Xiaoyong Qiang ◽  
Ming Hu ◽  
Boshuo Zhao ◽  
Yue Qin ◽  
Tianyi Zhang ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Room Temperature ◽  
Sensing Properties ◽  
Ammonia Sensing

Electrospinning of mesoporous p-type In2O3/TiO2composite nanofibers for enhancing NOxgas sensing properties at room temperature

CrystEngComm ◽  
2014 ◽  
Vol 16 (38) ◽  
pp. 9116-9124 ◽  
Author(s):  
Hongyuan Wu ◽  
Kan Kan ◽  
Linlin Wang ◽  
Guo Zhang ◽  
Ying Yang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Sensing Properties ◽  
P Type

scholarly journals New insights towards strikingly improved room temperature ethanol sensing properties of p-type Ce-doped SnO2 sensors

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Manjeet Kumar ◽  
Vishwa Bhatt ◽  
A. C. Abhyankar ◽  
Joondong Kim ◽  
Akshay Kumar ◽  
...  
Keyword(s):  
Room Temperature ◽  
Sensing Properties ◽  
Ethanol Sensing ◽  
P Type

scholarly journals P-type conductivity and NO2 sensing properties for V-doped W18O49 nanowires at room temperature

2013 ◽  
Vol 62 (20) ◽  
pp. 208104
Author(s):  
Qin Yu-Xiang ◽  
Liu Kai-Xuan ◽  
Liu Chang-Yu ◽  
Sun Xue-Bin
Keyword(s):  
Room Temperature ◽  
Type Conductivity ◽  
Sensing Properties ◽  
P Type

Investigations of Oxidation Dependence on Type of Porous Silicon Near Room Temperature by Isothermal Microcalorimeter

1997 ◽  
Vol 485 ◽  
Author(s):  
J. Salonen ◽  
V-P. Lehto ◽  
E. Laine
Keyword(s):  
Activation Energy ◽  
Porous Silicon ◽  
Room Temperature ◽  
Activity Monitoring ◽  
Thermal Activity ◽  
Autocatalytic Reactions ◽  
The Difference ◽  
P Type ◽  
Isothermal Microcalorimeter

AbstractOxidation of porous silicon has been studied using thermal activity monitoring, i.e. isothermal microcalorimeter. It was found that, at room temperature (25 °C) the micro-calorimetric signal from the oxidation of the p+-type porous silicon (PS) reduces exponentially, while in the case of n-type PS, the signal starts to increase slowly, reaching its highest value after some hours. This kind of behaviour is typical of autocatalytic reactions. To clarify the origin of the difference, we varied the preparation parameters of the porous silicon. We determined the activation energy from the measurements near the room temperature (25–70 °C). The results of this research have been compared with the previous observations and the possible origin of the difference has been discussed.

NO2-sensing properties based on the nanocomposite of n-WO3−x/n-porous silicon at room temperature

2013 ◽  
Vol 186 ◽  
pp. 140-147 ◽  
Author(s):  
Mingda Li ◽  
Ming Hu ◽  
Dingli Jia ◽  
Shuangyun Ma ◽  
Wenjun Yan
Keyword(s):  
Porous Silicon ◽  
Room Temperature ◽  
Sensing Properties

The light-enhanced NO 2 sensing properties of porous silicon gas sensors at room temperature

2012 ◽  
Vol 21 (5) ◽  
pp. 058201 ◽  
Author(s):  
Hui-Qing Chen ◽  
Ming Hu ◽  
Jing Zeng ◽  
Wei-Dan Wang
Keyword(s):  
Porous Silicon ◽  
Gas Sensors ◽  
Room Temperature ◽  
Sensing Properties

ENHANCED GAS SENSING PROPERTIES OF p-TYPE TeO2 NANORODS FUNCTIONALIZED WITH Pd

NANO ◽  
2011 ◽  
Vol 06 (05) ◽  
pp. 455-460 ◽  
Author(s):  
HYUNSU KIM ◽  
SUNGHOON PARK ◽  
CHANGHYUN JIN ◽  
CHONGMU LEE
Keyword(s):  
Electron Microscopy ◽  
Gas Sensing ◽  
Average Diameter ◽  
Pd Nanoparticles ◽  
Face Centered Cubic ◽  
X Ray Diffraction ◽  
Sensing Properties ◽  
Transmission Electron ◽  
Face Centered ◽  
P Type

TeO2 nanorods functionalized with Pd were prepared by a three-step process comprising thermal evaporation of Te powders, Pd deposition by photo-reduction, and annealing. Sensors were fabricated by using the Pd -functionalized TeO2 nanorods. Scanning electron microscopy images exhibited that the nanorods with diameters in a range of 50–100 nm and lengths of a few micrometers were covered with the Pd nanoparticles with an average diameter of ~ 15 nm. Transmission electron microscopy and X-ray diffraction analysis revealed that the nanorods were monocrystalline simple tetragonal TeO2 . On the other hand, the nanoparticles on them were confirmed to be nanocrystalline face-centered cubic Pd . The multiple-networked TeO2 nanorod sensors exhibited a sensitivity of 3.13% at 100 ppm NO2 at 300°C, whereas the Pd -functionalized TeO2 nanorod sensors exhibited a sensitivity of 11.97% under the same condition. The recovery time of TeO2 nanorods was decreased considerably at every NO2 concentration by the Pd -functionalization even if the response time decreased or increased slightly depending upon the NO2 concentration. In addition, the origin of the enhancement of the sensing properties of the TeO2 nanorods by functionalization with Pd is discussed.

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