gas - sensing properties of tin oxide doped with metal oxides and carbon

... image of an MWCNTs -doped SnO 2 sol (c); FE-SEM image of an MWCNTs -doped SnO 2 (d). Please cite this article in press as: N. Van Hieu, et al., Gas- sensing properties of tin oxide doped with metal oxides ... press as: N. Van Hieu, et al., Gas- sensing properties of tin oxide doped with metal oxides and carbon nanotubes: A competitive sensor for...

Ngày tải lên: 19/03/2014, 16:48

... nanocrystalline -doped tin oxide sensor at lower operat- ing temperatures, Sens. Actuators B 104 (2005) 223–231. [11] A. Salehi, M. Gholizade, Gas- sensing properties of indium -doped SnO 2 thin films with ... commercial WO 3 nanopowders and powder mixtures with different concentrations of In (1.5, 3.0 and 5.0wt.%). The gas sensing properties of the sensors to ni...

Ngày tải lên: 19/03/2014, 16:48

... calcinations are in the range of 30–150 nm. The gas sensing properties of these powders in the form of thick film were investigated with and without platinum doping. Gas response of thick films sintered ... widely explored for ammonia gas sensors preparation. In the present work, we investigate ammonia gas sensing prop- erties of nanocrystalline tungsten oxide wit...

Ngày tải lên: 19/03/2014, 16:48

... by detecting three other individual oxidizing gases, CO, O 2 and CO 2 , at 600 °C, and a gas mixture (NO 2 + oxidizing gases) with CO, O 2 and CO 2 concen- trations of 1000 ppm, 15% and 10%, ... The surface and morphological properties of the fabricated sensor were studied, while its gas sensing properties were investigated by detecting NO 2 and other oxidizing gas...

Ngày tải lên: 19/03/2014, 16:48

... Electrical and gas- sensing properties of WO 3 semiconductor material Wang Yu-De * , Chen Zhan-Xian, Li Yan-Feng, Zhou Zhen-Lai, Wu Xing-Hui Department of Materials Science and Engineering, ... alumina tube with Au electrodes and Platinum wires. The SiO 2 was used to add intensity of sensitive material of WO 3 , but it did not in¯uence the gas- sensing properties of...

Ngày tải lên: 19/03/2014, 16:48

... al.rSensors and Actuators B 67 2000 270–274 271 Fig. 1. Change of gas sensitivity with firing temperature. This paper described the effect of NH on gas sensing 3 properties of Pt dispersed-TiO derived ... coating was prepared as follows. Ž.Ž. A 75% isopropanol solution of Ti O-iPr AcAc , Nisso: 22 T-50, was used as a Ti source. Methanol solution of L-Lysine was reacted...

Ngày tải lên: 19/03/2014, 16:48

... Microstructure, H 2 gas sensing propertiesofundopedand Pd -doped SnO 2 nanowires, Sens. Actuat. B 135 (2009) 524–529. [12] Y.Z. Lv, L. Guo, H.B. Xu, X.F. Chu, Gas- sensing properties of well-crystalline ... the occurrence of cracks in the films. The NO 2 gas sensing measurements were carried out in a home-built computer-controlled static gas sensing characteriza- tion sys...

Ngày tải lên: 20/03/2014, 13:04

... www.elsevier.com/locate/snb Research on gas- sensing properties of lead sulfide-based sensor for detection of NO 2 and NH 3 at room temperature Tiexiang Fu ∗ School of Chemistry and Bioengineering, Changsha University of Science ... about the NO 2 - and NH 3 -sensing properties of PbS till date. In present paper, the gas- sensing characteristics of PbS were in...

Ngày tải lên: 20/03/2014, 13:06

... the material and gas- sensing properties of room-temperature tungsten oxide nanorod sensors Yong Shin Kim ∗ Department of Applied Chemistry, Hanyang University, Ansan 42 6-7 91, Republic of Korea article ... con- sists of W 4f 7/2 and W 4f 5/2 doublet peaks with the spin-orbit splitting energy of 2.1 eV. Fig. 6A and B shows W 4f XPS spectra of N 2 annealed samples...

Ngày tải lên: 20/03/2014, 13:11

... or thin-film semiconductor metal oxides, such as limited maximum sensitivity, high working temperatures and lack of long-term sta- bility [5]. Recently, nanorods, nanowires and nanoribbons of metal oxides ... the best of our knowledge, this is the first report of the selective synthesis of ␣-Fe 2 O 3 superstructures and nanocubes. The gas- sensing properties of the...

Ngày tải lên: 05/05/2014, 15:26