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Haga, Yutaka; An, Heishoku; Yosomiya, Ryûtoku

doi:10.1023/a:1018602801793

Cited by 35 publications

(6 citation statements)

References 13 publications

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“…We point out that TiO 2 is a photoconductive semiconductor. 27,28 Accordingly, despite the promising stability observed in our electromigrated Au wires supported by a Ti adhesion layer and our tunnel junctions fabricated from pure Ti, further work is necessary to clarify potential applications of Ti-based tunnel junctions, in particular regarding their suitability for studying light induced transport.…”

Section: Discussionmentioning

confidence: 98%

The role of titanium in electromigrated tunnel junctions

Frimmer

Puebla‐Hellmann

Wallraff

et al. 2014

Applied Physics Letters

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A standard route for fabrication of nanoscopic tunnel junctions is via electromigration of lithographically prepared gold nanowires. In the lithography process, a thin adhesion layer, typically titanium, is used to promote the adhesion of the gold nanowires to the substrate. Here, we demonstrate that such an adhesion layer plays a vital role in the electrical transport behavior of electromigrated tunnel junctions. We show that junctions fabricated from gold deposited on top of a titanium adhesion layer are electrically stable at ambient conditions, in contrast to gold junctions without a titanium adhesion layer. We furthermore find that electromigrated junctions fabricated from pure titanium are electrically exceptionally stable. Based on our transport data, we provide evidence that the barrier in gold-on-titanium tunnel devices is formed by the native oxide of titanium

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Section: Discussionmentioning

confidence: 98%

The role of titanium in electromigrated tunnel junctions

Frimmer

Puebla‐Hellmann

Wallraff

et al. 2014

Applied Physics Letters

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“…TiO 2 material could deeply oxidize most of the toxic organic substances [5]. This major discovery attracted a large amount of scholars' interests, and there have been many outcomes related TiO 2 material [6][7][8][9][10][11][12]. However, TiO 2 has a large forbidden band width (about 3.2 eV) and cannot absorb solar light efficiently.…”

Section: Introductionmentioning

confidence: 99%

g-C3N4/CeO2 Binary Composite Prepared and Its Application in Automobile Exhaust Degradation

et al. 2020

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Vehicle exhaust seriously pollutes urban air and harms human health. Photocatalytic technology can effectively degrade automobile exhaust. This work prepared g-C3N4/CeO2 photocatalytic material by constructing heterojunctions. Four kinds of g-C3N4/CeO2 composite photocatalytic materials with different mass ratios were prepared. An indoor exhaust gas purification test was carried out under natural light and ultraviolet light irradiations. The optimum mass ratio of g-C3N4 material and CeO2 material was determined by evaluating the exhaust gas degradation effective. Moreover, the structure and morphology of the g-C3N4/CeO2 composite were investigated with microscopic characterization experiments (including XRD, TG-DSC, FT-IR, UV-Vis, SEM and XPS). The results obtained were that the optimum mass ratio of g-C3N4 material to CeO2 material was 0.75. The degradation efficiencies under ultraviolet irradiation in 60 min for HC, CO, CO2, NOX were 7.59%, 12.10%, 8.25% and 36.82%, respectively. Under visible light conditions, the degradation efficiency in 60 min for HC, CO, CO2 and NOX were 15.88%, 16.22%, 10.45% and 40.58%, respectively. This work is useful for purifying automobile exhaust in the future.

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“…TiO 2 , when employed as thin film on a substrate reduces the disadvantages of heterogeneous photocatalysis such as stirring which is required during the reaction to discourage agglomeration of the particles and separation of particles after reaction [12][13][14][15]. Kato et al showed that factors such as the morphology and crystal structure of TiO 2 coatings, affect the photocatalytic activity for aqueous acetic acid degradation [16,17].…”

Section: Introductionmentioning

confidence: 99%

Optimization and comparative evaluation of optical and photocatalytic properties of TiO2 thin films prepared via sol–gel method

Danish

Ambreen

Chauhan

et al. 2015

Journal of Saudi Chemical Society

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Please cite this article as: Mohd. Danish, S. Ambreen, A. Chauhan, A. Pandey, Optimization and comparative evaluation of optical and photocatalytic properties of TiO 2 thin films prepared via sol-gel method, Journal of Saudi Chemical Society (2015), doi: http://dx. Abstract:TiO 2 thin films were fabricated with optimization of the synthesis parameters for efficient photocatalysis. The films were sculptured from gels obtained from Ti(O i Pr) 4 and Ti(OBu s ) 4 via spin coating at different rotation speed ranging from 1000 rpm to 3000 rpm. Thicknesses of the films were in the range of ≈ 112 nm to ≈ 160 nm. The X-ray diffractograms showed a phase transformation from anatase to rutile along with increase in average crystallite size from 11 nm to 18 nm with decrease in thickness of the films.Refractive index (n) values of the films were in the range of 2.50 to 3.45 while extinction coefficient (k) values ranged from 0.090 to 0.860. These films were transparent with high transmittance (T ≤ 95%) in the visible region. The optical band gaps for films were calculated to be in the range of 3.00 eV to 3.95 eV. Photocatalytic degradations of methylene blue by the fabricated TiO 2 thin films has also been investigated.Introduction:

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Untitled

Cited by 35 publications

References 13 publications

The role of titanium in electromigrated tunnel junctions

The role of titanium in electromigrated tunnel junctions

g-C3N4/CeO2 Binary Composite Prepared and Its Application in Automobile Exhaust Degradation

Optimization and comparative evaluation of optical and photocatalytic properties of TiO2 thin films prepared via sol–gel method

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