Improving the gas sensing property of WO3 nanomaterials

... material for ethanol gas The analysis of the electrical properties and gas- sensing mechanism of WO3 -based sensors revealed that the calcining and operating temperature of sensor obviously in¯uence ... tube with Au electrodes and Platinum wires The SiO2 was used to add intensity of sensitive material of WO3 , but it did not in¯uence the gas- sensing prope...

Ngày tải lên: 19/03/2014, 16:48

... Please cite this article in press as: S.-E Jo et al., Gas sensing properties of WO3 doped rutile TiO2 thick film at high operating temperature, Curr Appl Phys (2009), doi:10.1016/j.cap.2009.06.053 ... (2009) xxx–xxx Fig SEM images of the sensing films Fig AFM images of the sensing films Fig XRD patterns of undoped TiO2, 11 wt.% WO3 doped TiO2 and 15 wt.%...

Ngày tải lên: 19/03/2014, 16:48

... concentration of NO2 was 1/100 of those of the other gases These results demonstrated the high gas response and selective detection of WO3 nano-porous microspheres to NO2 The selective detection and gas ... the effective gas diffusion (Fig 5) The gas response was improved fur- Fig Dynamic sensing transients of (a) R30-RH and (b) R30 sensors and (c) gas respon...

Ngày tải lên: 19/03/2014, 16:48

... the source of added support of charge that changes the sensing properties of the WO3 -based sensors Conclusions The gas sensing properties of pure and indium- doped nanoparticle WO3 thick films ... images of a pure WO1 thick film surface (a, b) and indium3 doped WO3 thick film with indium concentration of wt.% Fig Responses to ammonia of indium- do...

Ngày tải lên: 19/03/2014, 16:48

... performed by the user software programmed under LabVIEW (NI) environments with a typical sampling rate of Hz Results and discussion 3.1 Thermal treatment effects on the material properties As-deposited ... Ar-annealing condition: the onset of recrystallization is around 550 ◦ C and the columnar crystals grow larger when an anneal temperature reaches above 600 ◦ C...

Ngày tải lên: 20/03/2014, 13:11

... Platinum nanoparticles Then, in order to obtain the general view and the detailed structural information of the metal nanomaterials, the SEM observation of the materials synthesized by using of polyol ... nanostructure materials (Ag, Au and Pt) with different sharp and size to NH3 adsorption of hybrids between rGO (reduced Graphene Oxide) and these metals The...

Ngày tải lên: 23/09/2016, 14:01

... the diagnosis and treatment of smearnegative tuberculosis  Part i Improving the diagnosis and treatment of smear-negative tuberculosis Background management of smear-negative pulmonary and extrapulmonary ... Improving the diagnosis and treatment of smear-negative pulmonary and extrapulmonary tuberculosis among adults and adol...

Ngày tải lên: 15/03/2014, 03:20

... 0.433 Sensors Gases Table Modeled RC for WO3 bare, Au /WO3 and Pd /WO3 based sensors towards 0.8 ppm of O3 and dry air (baseline) at 300 ◦ C 0.8 ppm of Ozone (O3 ) WO3 + Aua WO3 a WO3 + Pda Dry ... increases and it is clear that the Au /WO3 sensor gives A Labidi et al / Sensors and Actuators B 120 (2006) 338–345 341 Table Response “Sgas ” of WO3 bare...

Ngày tải lên: 19/03/2014, 16:48

... 270–274 272 Table Relative resistance of the thin film fired in different atmosphere Žmeasured at 2008C Number Firing atmosphere Kind of thin film Kind of measuring gas Relative resistance 1a 1H 2a ... al., Gas sensing properties of platinum dispersed- TiO2 thin film derived from precursor, Sens Actuators, B 62 Ž2000 55–60 w13x M Egashira, Y Shimizu, Y Tak...

Ngày tải lên: 19/03/2014, 16:48

... micrograph of powders calcined at 350 and 600 ◦ C Please cite this article in press as: T.D Senguttuvan, et al., Gas sensing properties of nanocrystalline tungsten oxide synthesized by acid precipitation ... response for to 4000 ppm NH3 gas Please cite this article in press as: T.D Senguttuvan, et al., Gas sensing properties of nanocrystalline tungsten oxi...

Ngày tải lên: 19/03/2014, 16:48

... image of an MWCNTs -doped SnO2 sol (c); FE-SEM image of an MWCNTs -doped SnO2 (d) Please cite this article in press as: N Van Hieu, et al., Gas- sensing properties of tin oxide doped with metal oxides ... ethanol gas and LPG Please cite this article in press as: N Van Hieu, et al., Gas- sensing properties of tin oxide doped with metal oxides an...

Ngày tải lên: 19/03/2014, 16:48

... K.P Musselman, G.J Mulholland, A.P Robinson, L Schmidt-Mende, J.L MacManus-Driscoll, Low-temperature synthesis of large- area, free-standing nanorod arrays on ITO/glass and other conducting substrates, ... the growth of the double-sided nanorod arrays Moreover, the gas sensing performance of the as-synthesised Co-doped WO3 nanostructures was investigated towards a series of fl...

Ngày tải lên: 20/03/2014, 13:04

... at room temperature before and after the heating Please cite this article in press as: T Fu, Research on gas- sensing properties of lead sulfide-based sensor for detection of NO2 and NH3 at room ... Fu, Research on gas- sensing properties of lead sulfide-based sensor for detection of NO2 and NH3 at room temperature, Sens Actuators B: Chem (2009), doi:10...

Ngày tải lên: 20/03/2014, 13:06

... humidity of 5–38% Results and discussion 2.3 Gas- sensing properties test 3.1 Microstructures of hollow sea urchin- like ˛-Fe2 O3 nanostructures and ˛-Fe2 O3 nanocubes Measurements on gas sensitivity ... / Sensors and Actuators B 141 (2009) 381–389 is one of the most important parameters of sensors In addition, the sensing properties of hollow sea urchin...

Ngày tải lên: 05/05/2014, 15:26

... smaller than that of the members of prism-like series due to their more intensive visible emission 3.3 Humidity sensing property of nanocomposites The humidity sensing of ZnO and ZnO nanocomposite ... raspberry-like ZnO and ZnOAIn(OH)3 Table Optical properties of ZnO and ZnO nanocomposite samples Sample Eg (eV) Prism-like ZnO ZnOAIn(OH)3 at.% In(III) ZnOA...

Ngày tải lên: 06/05/2014, 13:24