Hydrogen sensing properties of ZnO nanorods: Effects of annealing, temperature and electrode structure

WO3/Pd layered composite films were prepared by magnetron Sputtering on glass substrate. After deposition, samples were annealed with different condition. The hydrogen sensitive response of the composite film was measured by home-made measurement system. The results indicated that suitable annealing could increase the response sensitivity of the layered composite film to hydrogen detect, Exorbitant annealing temperature will damage Pd layer on the WO3 suface, then decrease the hydrogen detect sinsitivity badly.

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Natural Biowaste-Cocoon-Derived Granular Activated Carbon-Coated ZnO Nanorods: A Simple Route To Synthesizing a Core–Shell Structure and Its Highly Enhanced UV and Hydrogen Sensing Properties

ACS Applied Materials & Interfaces ◽

10.1021/acsami.7b11051 ◽

2017 ◽

Vol 9 (45) ◽

pp. 39771-39780 ◽

Cited By ~ 12

Author(s):

Adhimoorthy Saravanan ◽

Bohr-Ran Huang ◽

Deepa Kathiravan ◽

Adhimoorthy Prasannan

Keyword(s):

Activated Carbon ◽

Shell Structure ◽

Zno Nanorods ◽

Granular Activated Carbon ◽

Core Shell ◽

Simple Route ◽

Sensing Properties ◽

Hydrogen Sensing ◽

Carbon Coated ◽

Core Shell Structure

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Hydrogen sensing properties of multi-walled carbon nanotubes

Materials Science and Engineering C ◽

10.1016/j.msec.2008.04.014 ◽

2008 ◽

Vol 28 (8) ◽

pp. 1556-1559 ◽

Cited By ~ 19

Author(s):

Kun Guo ◽

Ahalapitiya H. Jayatissa

Keyword(s):

Carbon Nanotubes ◽

Sensing Properties ◽

Hydrogen Sensing ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

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Facile Synthesis of a Porous ZnO Nanorod Array with Enhanced Photocatalysis for Photoelectrochemical Water Splitting Application

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2020.17411 ◽

2020 ◽

Vol 20 (6) ◽

pp. 3512-3518

Author(s):

Saleh Khan ◽

Xiao-He Liu ◽

Xi Jiang ◽

Qing-Yun Chen

Keyword(s):

Annealing Temperature ◽

Zno Nanorods ◽

Nanorod Array ◽

Photocurrent Density ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

Irradiation Intensity ◽

Heat Treated ◽

Positive Effect

Highly efficient and effective porous ZnO nanorod arrays were fabricated by annealing ZnO nanorod arrays grown on a substrate using a simple hydrothermal method. The annealing had a positive effect on the nanorod morphology, structure and optical properties. The porosity was closely related to the annealing temperature. After heating at 450 °C, pores appeared on the nanorods. It was demonstrated that the porosity could be exploited to improve the visible light absorption of ZnO and reduce the bandgap from 3.11 eV to 2.99 eV. A combination of improved charge separation and transport of the heat-treated ZnO thus led to an increase in the photoelectrochemical properties. At an irradiation intensity of 100 mW/cm−2, the photocurrent density of the porous nanorod array was approximately 1.3 mA cm−2 at 1.2 V versus Ag/AgCl, which was five times higher than that of the ZnO nanorods. These results revealed the synthesis of promising porous ZnO nanorods for photoelectrochemical applications.

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