2010
DOI: 10.1021/am100707h
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Enhancement of Ethanol Vapor Sensing of TiO2 Nanobelts by Surface Engineering

Abstract: TiO(2) nanobelts were prepared by a hydrothermal process, and the structures were manipulated by surface engineering, including surface coarsening by an acid-corrosion procedure and formation of Ag-TiO(2) heterostuctures on TiO(2) nanobelts surface by photoreduction. Their performance in the detection of ethanol vapor was then examined and compared by electrical conductivity measurements at varied temperatures. Of the sensors based on the four nanobelt samples (TiO(2) nanobelts, Ag-TiO(2) nanobelts, surface-co… Show more

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Cited by 195 publications
(119 citation statements)
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“…The responses to 10 ppm ~ 100 ppm C 2 H 5 OH ranged from 42.4 to 210 in the SnO 2 NW sensor, this is significantly enhanced to 188 to 634 by loading Ag onto the sensor. The C 2 H 5 OH response of the Ag-SnO 2 NW sensors in the present study is higher than the Ag-loaded TiO 2 nanobelts [17], the Ag-loaded ZnO nanorods [18], and the Ag-loaded TiO 2 spherical heterostructures [19]. In particular, considering the very high response to 10 ppm C 2 H 5 OH(R a /R g = 188), detection of sub-ppm levels of C 2 H 5 OH seems to be possible using Ag-loaded SnO 2 NW networks.…”
Section: Gas Sensing Characteristicscontrasting
confidence: 53%
“…The responses to 10 ppm ~ 100 ppm C 2 H 5 OH ranged from 42.4 to 210 in the SnO 2 NW sensor, this is significantly enhanced to 188 to 634 by loading Ag onto the sensor. The C 2 H 5 OH response of the Ag-SnO 2 NW sensors in the present study is higher than the Ag-loaded TiO 2 nanobelts [17], the Ag-loaded ZnO nanorods [18], and the Ag-loaded TiO 2 spherical heterostructures [19]. In particular, considering the very high response to 10 ppm C 2 H 5 OH(R a /R g = 188), detection of sub-ppm levels of C 2 H 5 OH seems to be possible using Ag-loaded SnO 2 NW networks.…”
Section: Gas Sensing Characteristicscontrasting
confidence: 53%
“…A two-step method is illustrated by Hu et al [55] with Ag clusters on TiO 2 nanobelts. The nanobelts were prepared via an alkaline hydrothermal process using commercial TiO 2 powders, NaOH, HCl and deionized water.…”
Section: Growth Of Tio 2 Nanostructuresmentioning
confidence: 99%
“…Hu et al [55] synthesized four types of TiO 2 nanobelts (TiO 2 untreated nanobelts, TiO 2 surfacecoarsened nanobelts, Ag nanoparticles-TiO 2 untreated nanobelts and Ag nanoparticles-TiO 2 surface-coarsened nanobelts) for the detection of ethanol vapour according to the above-mentioned hydrothermal process. The best performance is obtained for Ag nanoparticlesTiO 2 surface-coarsened nanobelts.…”
Section: Sensing Performance Of Tio 2 1-d Nanostructuresmentioning
confidence: 99%
“…To date, 1-D TiO 2 nanostructures have been produced by a wide variety of processes such as hydrothermal [11,12], electrospinning [13,14], anodization [15,16], nanocarving [17,18], UV lithography [19], and thermal oxidization [20] process. Among these, the process thermal oxidation is attractive for mass production because of its low cost and simplicity compared with other techniques.…”
Section: Introductionmentioning
confidence: 99%