The TiO2-V2O5-WO3 with high catalyst contents ( V2O5-WO3 above % in weight) can easily give full NOx conversion ( 100 % conversion of NOx into N2), especially at the high temperatures above 300 °C. In this work, the amount of samples used at each test is only 20 mg for a flow of 6 L/h. Such small amount of catalyst leads to conversion degree that rarely exceeds 90% even at the ...
Aim of this work is to compare the electrical responses to 100–400 ppb NO2 gas concentrations of WO3 electrospun nanofibers both activated by thermal (in the temperature range 25–100 °C) and/or visible light at different wavelengths (Red λ = 670 nm, Green λ = 550 nm, and Purple-Blue λ = 430 nm). WO3 nanofibers were prepared by mixing a W-O sol-gel transparent solution with a polymeric ...
WO3 nanofibers functionalized by protein-templated RuO2 nanoparticles as highly sensitive exhaled breath gas sensing layers. ... Gas sensor properties of Ag- and Pd-decorated SnO micro-disks to NO2, H2 and CO: Catalyst enhanced sensor response and selectivity. Sensors and Actuators B: Chemical 2017, 239, 253-261. DOI: / Jae-Hun Kim, Hyoun Woo Kim, Sang Sub Kim. …
28/06/2003· SnO2 nanoribbons with exposed (1 0 1̄) and (0 1 0) surfaces have recently been demonstrated to be highly effective NO2 sensors even at room temperature. The sensing mechanism is examined here through first principles density functional theory (DFT) calculations. We show that the most stable adsorbed species involve an unexpected NO3 group doubly bonded to Sn centers.
The response of the In2Ge2O2 nanofibers to NO2 gas at room temperature increased from 104 to 601% with increasing the UV light illumination intensity from 0 to mW/cm(2). The significant ...
The NO2-sensing properties of the sensors based on the WO3 nanocrystals with various morphologies to NO2 with the concentration ranging from 100 ppb to 3 ppm were examined at different ...
15/07/2018· - Correlation between the NO2 gas sensing properties and surface area of ZnO nanofibers, hyerarchical and thin films structures; - Sensitivity of Nanocrystalline Metal Oxides to CO and Ammonia Determined by Active Sites; - Hydrothermal Synthesis of Tungsten Oxide (WO3) for the detection of NO2 gas
15/07/2018· - Correlation between the NO2 gas sensing properties and surface area of ZnO nanofibers, hyerarchical and thin films structures; - Sensitivity of Nanocrystalline Metal Oxides to CO and Ammonia Determined by Active Sites; - Hydrothermal Synthesis of Tungsten Oxide (WO3) for the detection of NO2 gas
12/09/2006· Tingting Wang, Juanyuan Hao, Shengliang Zheng, Quan Sun, Di Zhang, You Wang, Highly sensitive and rapidly responding room-temperature NO2 gas sensors based on WO3 nanorods/sulfonated graphene nanocomposites, Nano Research, /s12274-017-1688-y, 11, 2, (791-803), (2017).
15/10/2012· Oriol Gonzalez, Tesfalem Welearegay, Xavier Vilanova, Eduard Llobet, Using the Transient Response of WO3 Nanoneedles under Pulsed UV Light in the Detection of NH3 and NO2, Sensors, /s18051346, 18, 5, (1346), (2018).
Highly sensitive NO2 sensors using lamellar-structured WO3 particles prepared by an acidification method. Sensors and Actuators B: Chemical 2009 , 135 (2) , 568-574.
Carlo Piloto, Mahnaz Shafiei, Hareem Khan, Bharati Gupta, Tuquabo Tesfamichael, Nunzio Motta, Sensing performance of reduced graphene oxide-Fe doped WO3 hybrids to NO2 and humidity at room temperature, Applied Surface Science, /, 434, (126-133), (2018).
13/11/2009· Improved electrochromic performance of WO3 films with size controlled nanorods. Electrochimica Acta 2018, 260, 274-280. DOI: / Yuanyuan Zhao, Qunwei Tang, Benlin He, Peizhi Yang. Mo incorporated W 18 O 49 nanofibers as robust electrocatalysts for high-efficiency hydrogen evolution.
27/01/2011· Sun Hye Hwang, Chanhoi Kim, Hee Song, Suim Son and Jyongsik Jang, Designed Architecture of Multiscale Porous TiO 2 Nanofibers for Dye-Sensitized Solar Cells Photoanode , ACS Applied Materials & Interfaces, /am301245s, 4, 10, (5287-5292), (2012).
15/07/2018· - Correlation between the NO2 gas sensing properties and surface area of ZnO nanofibers, hyerarchical and thin films structures; - Sensitivity of Nanocrystalline Metal Oxides to CO and Ammonia Determined by Active Sites; - Hydrothermal Synthesis of Tungsten Oxide (WO3) for the detection of NO2 gas
Request PDF | The influence of thermal and visible light activation modes on the NO2 response of WO3 nanofibers prepared by electrospinning | The paper reports on the influence of visible light at ...
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