A two-anode reduction technique to monitor the defect and dope the surface of TiO2 nanotube array as photo-anode for water splitting

Hou, Xun; Jiang, Shaohong; Li, Yongdan

doi:10.1016/j.apcatb.2019.117949

Cited by 18 publications

(20 citation statements)

References 39 publications

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“…There are many methods to prepare TNTs, such as the anodic oxidation method, 23‐30 the hydro/solvothermal synthesis method, 31‐37 and the template method 7,11‐15 . In the following, the preparation methods of TNTs for DSSCs are explained in more detail.…”

Section: Preparation Methods Of Tnts For Dsscmentioning

confidence: 99%

TiO₂ nanotubes for dye‐sensitized solar cells—A review

Hou

Aitola

Lund

2020

Energy Science & Engineering

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TiO2 nanotubes (TNTs) are a potential candidate for the photoelectrode in dye‐sensitized solar cells (DSSCs). In this review, emphasis is given to the fabrication methods of the TNT photoelectrode, including the anodic oxidation method, the hydro/solvothermal method, and the template method. Modification of TNTs to improve the power conversion efficiency (PCE) and the long‐term stability of DSSCs is also covered. The active area of the DSSC strongly correlates with the PCE. Therefore, evaluating and comparing cell efficiencies with the same active area would be important. Reducing the material and manufacturing costs of TNT‐based DSSCs will be an important future target.

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Section: Preparation Methods Of Tnts For Dsscmentioning

confidence: 99%

TiO₂ nanotubes for dye‐sensitized solar cells—A review

Hou

Aitola

Lund

2020

Energy Science & Engineering

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“…One dimensional (1D) TiO 2 aligned nanostructures, which mainly include NRs, [56] NWs/nanofibers, [57,58] and NTs, [59,60] have attracted a great attention due to their specific advantages such as directional charge transport and strong light absorption compared to nanoparticulate TiO 2 in PEC applications. [48] Their corresponding synthesis strategies are summarized as below.…”

Section: Synthesis Of Ordered 1d Tio 2 Arrays Filmmentioning

confidence: 99%

“…PSN TiO 2 /FTO (3D) [d] Hydrothermal process followed by ion exchange-induced pore-forming process 1.02 mA/cm 2 at 0.4 V vs RHE 1 M KOH (AM 1.5G) [223] ZnFe-LDH/a-TiO 2 /r-TiO 2 /FTO (3D) [e] Two-step hydrothermal processes enhance the PEC water splitting performance of TiO 2 nanotubes. [59]…”

Section: )mentioning

confidence: 99%

Recent Advances in TiO₂‐based Photoanodes for Photoelectrochemical Water Splitting

Zhang

Cui

et al. 2022

Chemistry An Asian Journal

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Figure 8. (a) Schematic illustration for the synthesis of single-crystallite TiO 2 NR/NW arrays by use of an appropriate capping reagent. Reprinted with permission. Ref. [60] Copyright 2018, John Wiley and Sons. (b) SEM image and (c) the sizes along with the reaction time of the obtained single-crystal rutile TiO 2 NW arrays by using specific organic ligands. Reprinted with permission. Ref. [96] Copyright 2018, Royal Society of Chemistry. (d,e) SEM images and (f) XRD of the single-crystal anatase TiO 2 NR arrays obtained in a mixed chloride-sulfate solution with sulfate as capping reagent. Reprinted with permission. Ref. [98]

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“…A rich family of TiO 2 based nanomaterials, such as zero dimensional (0D), one dimensional (1D), two dimensional (2D), and three dimensional (3D) nanostructures have been synthesized and their properties have been explored. Out of these, nanostructures of 1D TiO 2 have been extensively studied due to having numerous applications in many engineering fields including dye-sensitized solar cells [13,14], photo-detector [15,16], photocatalyst [17][18][19], photo-splitting of water [20][21][22], photo-electrochemical cells [23,24], gas sensors [25,26], piezoelectronics [27], super capacitors [28], lithium ion batteries [29,30], field emitters [31,32], and bone implantation [33,34].…”

Section: Introductionmentioning

confidence: 99%

Growth of 1D TiO₂ nanostructures on Ti substrates incorporated with residual stress through humid oxidation and their characterizations

Arafat¹,

Dinan²,

Haseeb³

et al. 2021

Nanotechnology

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Different Ti substrates, such as particles (as-received and ball milled), plate and TEM grid were oxidized for the growth of 1D TiO 2 nanostructures. The Ti substrates were oxidized for 4 h at temperatures of 700-750 °C in humid and dry Ar containing 5 ppm of O 2 . The effects of residual stress on the growth of 1D TiO 2 nanostructures were investigated. The residual stress inside the Ti particles was measured by XRD-sin 2 ψ technique. The oxidized Ti substrates were characterized using field emission scanning electron microscope (FESEM) equipped with energy dispersive X-ray (EDX) spectroscope, transmission electron microscope (TEM), X-ray diffractometer (XRD) and Xray photoelectron spectroscope (XPS). Results revealed that humid environment enhances the growth of 1D TiO 2 nanostructures. Four different types of 1D morphologies obtained during humid oxidation, e.g., stacked, ribbon, plateau and lamp-post shaped nanostructures. The presence of residual stress significantly enhances the density and coverage of 1D nanostructures. The as-grown TiO 2 nanostructures possess tetragonal rutile structure having length up to 10 µm along the <1 0 1> directions. During initial stage of oxidation, a TiO 2 layer is first formed on Ti substrate. Lower valence oxides (Ti 3 O 5 , Ti 2 O 3 and TiO) then form underneath the TiO 2 layer and induce stress at the interface of oxide layers. The induced stress plays significant role on the growth of 1D TiO 2 nanostructures. The induced stress is relaxed by creating new surfaces in the form of 1D TiO 2 nanostructures. A diffusion based model is proposed to explain the mechanism of 1D TiO 2 growth during humid oxidation of Ti. The 1D TiO 2 nanostructures and TiO 2 layer is formed by the interstitial diffusion of Ti 4+ ions to the surface and reacts with the surface adsorbed hydroxide ions (OH -). Lower valence oxides are formed at the metal-oxide interface by the reaction between diffused oxygen ions and Ti ions.

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A two-anode reduction technique to monitor the defect and dope the surface of TiO2 nanotube array as photo-anode for water splitting

Cited by 18 publications

References 39 publications

TiO₂ nanotubes for dye‐sensitized solar cells—A review

TiO₂ nanotubes for dye‐sensitized solar cells—A review

Recent Advances in TiO₂‐based Photoanodes for Photoelectrochemical Water Splitting

Growth of 1D TiO₂ nanostructures on Ti substrates incorporated with residual stress through humid oxidation and their characterizations

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A two-anode reduction technique to monitor the defect and dope the surface of TiO2 nanotube array as photo-anode for water splitting

Cited by 18 publications

References 39 publications

TiO2 nanotubes for dye‐sensitized solar cells—A review

TiO2 nanotubes for dye‐sensitized solar cells—A review

Recent Advances in TiO2‐based Photoanodes for Photoelectrochemical Water Splitting

Growth of 1D TiO2 nanostructures on Ti substrates incorporated with residual stress through humid oxidation and their characterizations

Contact Info

Product

Resources

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TiO₂ nanotubes for dye‐sensitized solar cells—A review

TiO₂ nanotubes for dye‐sensitized solar cells—A review

Recent Advances in TiO₂‐based Photoanodes for Photoelectrochemical Water Splitting

Growth of 1D TiO₂ nanostructures on Ti substrates incorporated with residual stress through humid oxidation and their characterizations