Photoelectrocatalytic properties of a vertically aligned Ti-W alloy oxide nanotubes array and its applications in dye wastewater degradation

Li, Mingfang; Zhao, Guohua; Li, Peiqiang; Zhang, Yanan; Wu, Meifen

doi:10.1080/09593330.2011.556150

Cited by 7 publications

(1 citation statement)

References 35 publications

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“…Composite materials such as CdS-TiO 2 , 28 TiO 2 -WO 3 , 29,30 and carbon nanotube/TiO 2 31 have also shown to improve PEC responses. With a particular focus on TiO 2 -WO 3 nanotubes, various synthesis methods have been reported such as anodization of Ti-W alloy, 32 emulsion electrospinning, thermal evaporation, thermal annealing, 33 sol-gel synthesis, 34 electrochemical deposition of WO 3 , 30 anodization of Ti containing tungstate species. 35 However, TiO 2 -WO 3 nanotubes synthesized from anodization of Ti-W thin films formed by co-sputtering deposition has not been widely investigated.…”

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confidence: 99%

TiO₂–WO₃Composite Nanotubes from Co–Sputtered Thin Films on Si Substrate for Enhanced Photoelectrochemical Water Splitting

Chappanda

Smith

Rieth

et al. 2014

J. Electrochem. Soc.

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Electrochemical anodization of a Ti-W nano-composite thin films deposited on a Si substrate by simultaneous magnetron sputtering of Ti and W resulted in the formation of TiO 2 -WO 3 nanotubular arrays. A change in the morphology of TiO 2 -WO 3 composite nanotubes with varying percentage of W in Ti-W composite thin films was observed. With a W density of less than or equal to 1.75 × 10 19 W atoms per cm 3 (after anodization), the morphology of the composite nanotubes were similar to that of plain TiO 2 nanotubes. Whereas with further increase in W density resulted in a nanoporous morphology. Ti-W composite films were also deposited on Si substrates with a 100 nm thick layer of tin doped indium oxide (ITO) to examine the PEC activity of the formed oxide composites. The TiO 2 -WO 3 composite nanotubes with 1.05 × 10 19 W atoms per cm 3 (3.15 × 10 18 W atoms per cm 3 before anodization) demonstrated to be an optimal W density for this system, giving rise to 40% increase in photocurrent at 0.5 V (vs. Ag/AgCl) compared to plain TiO 2 nanotubes.

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confidence: 99%

TiO₂–WO₃Composite Nanotubes from Co–Sputtered Thin Films on Si Substrate for Enhanced Photoelectrochemical Water Splitting

Chappanda

Smith

Rieth

et al. 2014

J. Electrochem. Soc.

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Semiconductor Nanoporous Anodic Alumina Photonic Crystals as a Model Photoelectrocatalytic Platform for Solar Light‐Driven Reactions

Ngo,

Lim,

Law

et al. 2024

Adv Energy and Sustain Res

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In this study, nanoporous anodic alumina distributed‐Bragg reflectors (NAA–DBRs) functionalized with tungsten trioxide (WO3) are used as prototype photoelectrocatalysts (PEC) for harnessing the slow photon effect to maximize photon‐to‐electron conversion efficiency under UV–visible–NIR illumination. NAA–DBR structures are structurally engineered by anodization, where their characteristic photonic stopband is precisely tuned along specific positions of the UV–visible spectrum. Subsequent atomic layer deposition is employed to coat the inner surface of these porous structures with WO3 semiconductor layers. Upon the application of overpotential bias, these platforms reveal excellent electron–hole pair separation to boost photoelectrocatalytic reactions. Photoelectrochemical degradation of methylene blue is used as a model reaction to elucidate enhancements associated with structural and optoelectronic arrangements. Notably, precise spectral alignment between the photonic stopband's red edge and the absorbance band of methylene blue enhances the degradation performance through the slow photon effect. Applying an overpotential bias further improves the photodegradation performance through efficient charge separation. These systems outperform comparable structures in this model reaction, achieving a maximum kinetic rate of 13.7 ± 2.0 h−1. The findings create new opportunities to develop high‐performing PEC technologies harnessing light–matter interactions.

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Preparation and properties of Co3O4-doped TiO2 nanotube array electrodes

et al. 2019

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Photoelectrocatalytic properties of a vertically aligned Ti-W alloy oxide nanotubes array and its applications in dye wastewater degradation

Cited by 7 publications

References 35 publications

TiO₂–WO₃Composite Nanotubes from Co–Sputtered Thin Films on Si Substrate for Enhanced Photoelectrochemical Water Splitting

TiO₂–WO₃Composite Nanotubes from Co–Sputtered Thin Films on Si Substrate for Enhanced Photoelectrochemical Water Splitting

Semiconductor Nanoporous Anodic Alumina Photonic Crystals as a Model Photoelectrocatalytic Platform for Solar Light‐Driven Reactions

Preparation and properties of Co3O4-doped TiO2 nanotube array electrodes

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Photoelectrocatalytic properties of a vertically aligned Ti-W alloy oxide nanotubes array and its applications in dye wastewater degradation

Cited by 7 publications

References 35 publications

TiO2–WO3Composite Nanotubes from Co–Sputtered Thin Films on Si Substrate for Enhanced Photoelectrochemical Water Splitting

TiO2–WO3Composite Nanotubes from Co–Sputtered Thin Films on Si Substrate for Enhanced Photoelectrochemical Water Splitting

Semiconductor Nanoporous Anodic Alumina Photonic Crystals as a Model Photoelectrocatalytic Platform for Solar Light‐Driven Reactions

Preparation and properties of Co3O4-doped TiO2 nanotube array electrodes

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Resources

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TiO₂–WO₃Composite Nanotubes from Co–Sputtered Thin Films on Si Substrate for Enhanced Photoelectrochemical Water Splitting

TiO₂–WO₃Composite Nanotubes from Co–Sputtered Thin Films on Si Substrate for Enhanced Photoelectrochemical Water Splitting