scholarly journals Synthesis and characterization of composite polyaniline as hydrogen gas detector

2017 ◽  
Vol 13 (4) ◽  
pp. 559-562 ◽  
Author(s):  
Alister Genndi Willis ◽  
Saharudin Haron
Keyword(s):  
Thin Films ◽  
Zinc Oxide ◽  
Oxidative Polymerization ◽  
Hydrogen Gas ◽  
Oxide Content ◽  
Composite Polymer ◽  
Best Response ◽  
Vis Spectroscopy ◽  
Gas Detector

Composite polymer consisting polyaniline (PANI) and zinc oxide (ZnO) were synthesized via oxidative polymerization of aniline. The composite PANI thin films were characterized by FTIR spectroscopy and their optical properties towards hydrogen gas were investigated using UV-vis spectroscopy. The FTIR spectra obtained verified the synthesis PANI/ZnO composite. From the experimental results, it was found that with increasing zinc oxide content in the composite cause the transmittance to decrease. The transmittance of the thin films slightly increased after exposed to hydrogen gas. PANI-ZnO (10%w.t.) exhibited best response compared to other composition with the highest transmittance peak difference of 11.4%. 

scholarly journals Synthesis of composite thin-film polymer consisting of tungsten and zinc oxide as hydrogen gas detector

2019 ◽  
Vol 90 ◽  
pp. 01008
Author(s):  
Willis Alister G. ◽  
Saharudin Haron
Keyword(s):  
Zinc Oxide ◽  
Metal Oxides ◽  
Hydrogen Gas ◽  
Composite Polymer ◽  
Transitional Metal Oxides ◽  
Pani Composite ◽  
Vis Spectroscopy ◽  
Before And After ◽  
Gas Detector ◽  
Film Polymer

A composite polymer consisting of polyaniline (PANI) was synthesised via oxidative polymerisation by varying concentrations of transitional metal oxides and the presence of a hydrogen dissociation catalyst, palladium (Pd). The metal oxides chosen for this study were tungsten oxide (WO3) and zinc oxide (ZnO). The composite polymer samples were characterised using Fourier transform infrared (FTIR) spectroscopy where ultraviolet-visible (UV-Vis) spectroscopy was used to observe the optical changes of the thin films due to exposure to hydrogen. The FTIR spectra obtained confirmed the synthesis of PANI composite. Based on the UV-VIS analysis, PANI-ZnO composite polymer showed the highest difference in peak intensity before and after exposure to hydrogen with 11.4% difference.

scholarly journals Sensing mechanism of an optimized room temperature optical hydrogen gas sensor made of zinc oxide thin films

2020 ◽  
Vol 9 (5) ◽  
pp. 10624-10634
Author(s):  
Siti Nor Aliffah Mustaffa ◽  
Nurul Assikin Ariffin ◽  
Ahmed Lateef Khalaf ◽  
Mohd. Hanif Yaacob ◽  
Nizam Tamchek ◽  
...  
Keyword(s):  
Thin Films ◽  
Zinc Oxide ◽  
Gas Sensor ◽  
Room Temperature ◽  
Hydrogen Gas ◽  
Oxide Thin Films ◽  
Sensing Mechanism

scholarly journals Synthesis and Characterization of Copper Doped Zinc Oxide Thin Films for CO Gas Sensing

2018 ◽  
Vol 5 (10) ◽  
pp. 20904-20911
Author(s):  
Sachin S Bharadwaj ◽  
B.W. Shivaraj ◽  
H.N. Narasimha Murthy ◽  
M Krishna ◽  
Manjush Ganiger ◽  
...  
Keyword(s):  
Thin Films ◽  
Zinc Oxide ◽  
Gas Sensing ◽  
Synthesis And Characterization ◽  
Oxide Thin Films ◽  
Co Gas

scholarly journals Electrochemical Deposition and Characterization of Zinc Oxide Thin Films

2005 ◽  
Vol 21 (06) ◽  
pp. 612-615
Author(s):  
CHEN Zhi-gang ◽  
◽  
TANG Yi-wen ◽  
ZHANG Li-sha ◽  
CHEN Zheng-hua ◽  
...  
Keyword(s):  
Thin Films ◽  
Zinc Oxide ◽  
Electrochemical Deposition ◽  
Oxide Thin Films

scholarly journals Growth and Characterization of Indium-Doped Zinc Oxide Thin Films Prepared by Sol-Gel Method

2012 ◽  
Vol 121 (1) ◽  
pp. 217-220 ◽  
Author(s):  
M.S. Kim ◽  
K.G. Yim ◽  
S. Kim ◽  
G. Nam ◽  
D.Y. Lee ◽  
...  
Keyword(s):  
Thin Films ◽  
Zinc Oxide ◽  
Sol Gel ◽  
Oxide Thin Films ◽  
Gel Method ◽  
Sol Gel Method

Characterization of Transparent Conducting Pulsed Laser Deposited Films in the Indium Zinc Oxide System

1998 ◽  
Vol 547 ◽  
Author(s):  
A. Rougier ◽  
N. Naghavi ◽  
C. Marcel ◽  
F. Portemer ◽  
L. Dupont ◽  
...  
Keyword(s):  
Thin Films ◽  
Zinc Oxide ◽  
Visible Region ◽  
Pulsed Laser ◽  
Oxide System ◽  
Optical Measurements ◽  
K Value ◽  
Indium Zinc Oxide ◽  
Average Transmittance

AbstractThin films of indium zinc oxide so called IZO were prepared with pulsed laser deposition. It was found that the crystalline structure, the composition and the morphology of the films as well as the optical and electrical properties were quite sensitive to the deposition conditions namely to the temperature and oxygen pressure. The crystallinity of the ZnkIn2O3+k (k from 1 to 5) thin films increases as the substrate temperature increases. An average transmittance of 85 % in the visible region was obtained for any k values. Optical measurements show a continuous decrease of the band gap as the zinc amount increases. The highest conductivity reported is for the ZnIn2O4, thin films deposited at 300 °C (σ = 1.2 103 S/cm). Increasing the amount of Zn (i.e. k value) was found to result in a conductivity decrease. Finally, a good correlation between the electric mobility and the optical mobility is obtained.

Characterization of zinc oxide thin films prepared by pulsed laser deposition at room temperature

2008 ◽  
Vol 202 (22-23) ◽  
pp. 5467-5470 ◽  
Author(s):  
Norihiro Sakai ◽  
Yoshihiro Umeda ◽  
Fumiaki Mitsugi ◽  
Tomoaki Ikegami
Keyword(s):  
Thin Films ◽  
Zinc Oxide ◽  
Pulsed Laser Deposition ◽  
Room Temperature ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Oxide Thin Films

Deposition and Characterization of Transparent Thin Films of Zinc Oxide Doped with Bi and Sb

2002 ◽  
Vol 14 (1) ◽  
pp. 116-121 ◽  
Author(s):  
Antonino Gulino ◽  
Ignazio Fragala
Keyword(s):  
Thin Films ◽  
Zinc Oxide
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