Nitrite ion sensing properties of ZnTiO3–TiO2 composite thin films deposited from a zinc–titanium molecular complex

2015 ◽  
Vol 39 (9) ◽  
pp. 7442-7452 ◽  
Author(s):  
Muhammad Ali Ehsan ◽  
Hamid Khaledi ◽  
Alagarsamy Pandikumar ◽  
Perumal Rameshkumar ◽  
Nay Ming Huang ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Molecular Complex ◽  
Composite Thin Film ◽  
Film Electrode ◽  
Nitrite Ion ◽  
Thin Film Electrode ◽  
Composite Thin Films ◽  
Sensing Properties ◽  
Ion Sensing

ZnTiO3–TiO2 composite thin film electrode has been fabricated by AACVD method and tested for electrochemical nitrite ion detection.

Effect of Temperature on the Electrical and Gas Sensing Properties of Polyaniline and Multiwall Carbon Nanotube Doped Polyaniline Composite Thin Films

2011 ◽  
Vol 254 ◽  
pp. 167-170 ◽  
Author(s):  
Subodh Srivastava ◽  
Sumit Kumar ◽  
Vipin Kumar Jain ◽  
Y.K. Vijay
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Gas Sensing ◽  
Hydrogen Gas ◽  
Composite Thin Film ◽  
Effect Of Temperature ◽  
Multiwall Carbon Nanotube ◽  
Film Sensor ◽  
Composite Thin Films ◽  
Pani Composite

In the present work we have reported the effect of temperature on the gas sensing properties of pure Polyaniline (PANI) and Multiwall carbon nanotube (MWNT) doped PANI composite thin film based chemiresistor type gas sensors for hydrogen gas sensing application. PANI and MWNT doped PANI composite were synthesized by in situ chemical oxidative polymerization of aniline using ammonium persulfate in an acidic medium. The thin sensing film of chemically synthesized PANI and MWNT doped PANI composite were deposited onto finger type Cu-interdigited electrodes using spin cast technique to prepared chemiresistor type gas sensor. The electrical properties of these composite thin films were characterized by I-V measurements as function of temperature. The I-V measurement revealed that conductivity of composite thin films increased as the temperature increased. The changes in resistance of the composite thin film sensor were utilized for detection of hydrogen gas. It was observed that at room temperature, MWNT doped PANI composite sensor shows higher response value and sensitivity with good repeatability in comparison to pure PANI thin film sensor. It was also observed that both PANI and MWNT doped PANI composite thin film based sensors showed unstable behavior as the temperature increased. The surface morphology of these composite thin films has also been characterized by scanning electron microscopy (SEM) measurement.

Highly sensitive CO2 sensor based on microrods-like La2O3 thin film electrode

RSC Advances ◽  
2016 ◽  
Vol 6 (108) ◽  
pp. 106074-106080 ◽  
Author(s):  
A. A. Yadav ◽  
A. C. Lokhande ◽  
J. H. Kim ◽  
C. D. Lokhande
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Gas Sensor ◽  
Film Electrode ◽  
Thin Film Electrode ◽  
Sensor Application ◽  
Co2 Sensor ◽  
Highly Sensitive

The microrod-like La2O3 thin films are successfully synthesized by chemical bath method for highly sensitive CO2 gas sensor application.

Fabrication of Al–TiO2 Thin Film Electrode by Spray Pyrolysis Technique for Urea Sensing

2020 ◽  
Vol 20 (5) ◽  
pp. 2887-2892 ◽  
Author(s):  
A. Mathi Vathani ◽  
S. Dhanalakshmi ◽  
N. Jeyakumaran ◽  
N. Prithivikumaran
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Spray Pyrolysis ◽  
Kidney Diseases ◽  
Spray Pyrolysis Technique ◽  
Anatase Phase ◽  
Visible Region ◽  
Film Electrode ◽  
Thin Film Electrode ◽  
Vis Spectroscopy

A simple cost effective Al–TiO2 thin film electrode was fabricated for urea sensing. Urea is the key end product of nitrogen metabolism in humans. Increased level of urea leads to loss of kidney function. Thus determination of urea is important in analysis of kidney diseases. Al–TiO2 thin films were deposited with different concentration of Al by Spray pyrolysis technique. The X-ray diffraction (XRD) pattern reveals the anatase phase of the Al–TiO2 thin films with tetragonal structure. A shift is observed in the XRD peak position compared to as prepared TiO2 thin film indicates the incorporation of Al ions into Ti ions. The UV-Vis spectroscopy study shows that the absorption increases and the absorption peak shifts towards the visible region for Al–TiO2 thin films compared with that of the as prepared TiO2 thin film. The optical band gap values changes with the change in the Al concentration in TiO2 thin films. The electrochemical analysis for optimized Al–TiO2 thin film electrode was carried out by cyclic voltammetry (CV) method. CV studies of Al–TiO2 thin film electrode show the good stability and linearity which is essential to fabricate biosensor. The sensor response to urea is linear with correlation coefficient of 0.944 and the sensitivity is 3.17 μA mM−1 cm−2.

BaTiO3 THIN FILM BY CSD FROM MOLECULAR-DESIGNED PRECURSOR SOLUTION

2012 ◽  
Vol 05 (02) ◽  
pp. 1260007 ◽  
Author(s):  
MASAOMI NAGASAKA ◽  
DAI IWASAKI ◽  
NAONORI SAKAMOTO ◽  
NAOKI WAKIYA ◽  
HISAO SUZUKI
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Electrical Properties ◽  
Molecular Design ◽  
Precursor Solution ◽  
Cost Effective ◽  
Partial Hydrolysis ◽  
Film Electrode ◽  
Thin Film Electrode ◽  
Hydrolysis Method

BaTiO3 (BT) thin films were deposited by the cost effective method of a chemical solution deposition (CSD). 0.3 M BT precursor solution was prepared by the partial hydrolysis method. Partially hydrolyzed Ti -alkoxide and Ba precursor solution was reacted to prepare the highly polymerized BT precursor solution. BT precursor solution was spin-coated on a Pt/Ti/SiO2/Si substrate with (100)-oriented LaNiO 3 (LNO) thin film electrode. In addition, effect of the pre-annealing at 600°C in O2 atmosphere was elucidated by measuring the electrical properties of the resulting BT thin films deposited by the different annealing process. As a result, molecular-design of the BT precursor and a LNO thin film electrode were effective to enhance the electrical properties of the resultant BT thin films, as well as 600°C pre-annealing.

scholarly journals Single step fabrication of CuO–MnO–2TiO2 composite thin films with improved photoelectrochemical response

RSC Advances ◽  
2017 ◽  
Vol 7 (26) ◽  
pp. 15885-15893 ◽  
Author(s):  
Khadija Munawar ◽  
Muhammad Adil Mansoor ◽  
Wan Jefrey Basirun ◽  
Misni Misran ◽  
Nay Ming Huang ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Trifluoroacetic Acid ◽  
Photocurrent Density ◽  
Single Step ◽  
Composite Thin Film ◽  
Homogeneous Mixture ◽  
Composite Thin Films ◽  
Photoelectrochemical Response

CuO–MnO–2TiO2 composite thin film having a photocurrent density of 2.21 mA cm−2 at +0.7 V has been deposited from a homogeneous mixture of acetates of Cu and Mn and (Ti(O(CH2)3CH3)4) in the presence of trifluoroacetic acid in THF via AACVD at 550 °C.

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