Solar photocatalysts based on titanium dioxide nanotubes for hydrogen evolution from aqueous solutions of ethanol

Albina A. Valeeva; Irina Dorosheva; Ekatarina Kozlova; Anna Sushnikova; Anna Yu Kurenkova; Andrey Saraev; Hartmuth Schröttner; Andrey Rempel

doi:10.1016/j.ijhydene.2020.12.190

Solar photocatalysts based on titanium dioxide nanotubes for hydrogen evolution from aqueous solutions of ethanol

Albina A. Valeeva^*, Irina Dorosheva, Ekatarina Kozlova, Anna Sushnikova, Anna Yu Kurenkova, Andrey Saraev, Hartmuth Schröttner, Andrey Rempel

^*Corresponding author for this work

Institute of Electron Microscopy and Nanoanalysis (5190)

Research output: Contribution to journal › Article › peer-review

Abstract

Titanium foil was anodized to grow titanium dioxide nanotubes (TiO ₂ NT) by using an original technique. A solution of ethylene glycol and ammonium fluoride with a concentration of 0.5 wt% was employed as electrolyte, corrosion-resistant steel was chosen as the cathode material. Anodic oxidation was carried out potentiostatically at a voltage of 60 V at ambient temperature for 90 min. Modification of as prepared TiO ₂ NT were modified by calcination in air at 350°C for 4 h. Platinization of TiO ₂ NT was carried out by chemical reduction of platinum from H ₂PtCl ₆ solution by NaBH ₄ solution. Photocatalyst characterization was performed by using XRD, BET, SEM, XPS techniques. It was found that the calcination of as-prepared TiO ₂ NT leads to 6-fold increase of the photocatalytic activity under UV-irradiation. The enhanced activity of TiO ₂ NT is associated with the developed specific surface area and unique morphology of TiO ₂ NT. This results in high rate of separation of photogenerated excited electrons and holes. Due to high separation rate the catalytic activity increases substantially.

Original language	English
Pages (from-to)	16917-16924
Number of pages	8
Journal	International Journal of Hydrogen Energy
Volume	46
Issue number	32
DOIs	https://doi.org/10.1016/j.ijhydene.2020.12.190
Publication status	Published - 10 May 2021

Keywords

Ethanol solution
Hydrogen evolution
Titanium dioxide nanotubes
Titanium foil anodization

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Energy Engineering and Power Technology
Fuel Technology
Renewable Energy, Sustainability and the Environment

Fields of Expertise

Advanced Materials Science

Treatment code (Nähere Zuordnung)

Basic - Fundamental (Grundlagenforschung)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ijhydene.2020.12.190Licence: Unspecified

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@article{9395f1468dc34e4fa017b7f435026c32,

title = "Solar photocatalysts based on titanium dioxide nanotubes for hydrogen evolution from aqueous solutions of ethanol",

abstract = "Titanium foil was anodized to grow titanium dioxide nanotubes (TiO 2 NT) by using an original technique. A solution of ethylene glycol and ammonium fluoride with a concentration of 0.5 wt% was employed as electrolyte, corrosion-resistant steel was chosen as the cathode material. Anodic oxidation was carried out potentiostatically at a voltage of 60 V at ambient temperature for 90 min. Modification of as prepared TiO 2 NT were modified by calcination in air at 350°C for 4 h. Platinization of TiO 2 NT was carried out by chemical reduction of platinum from H 2PtCl 6 solution by NaBH 4 solution. Photocatalyst characterization was performed by using XRD, BET, SEM, XPS techniques. It was found that the calcination of as-prepared TiO 2 NT leads to 6-fold increase of the photocatalytic activity under UV-irradiation. The enhanced activity of TiO 2 NT is associated with the developed specific surface area and unique morphology of TiO 2 NT. This results in high rate of separation of photogenerated excited electrons and holes. Due to high separation rate the catalytic activity increases substantially. ",

keywords = "Ethanol solution, Hydrogen evolution, Titanium dioxide nanotubes, Titanium foil anodization",

author = "Valeeva, {Albina A.} and Irina Dorosheva and Ekatarina Kozlova and Anna Sushnikova and Kurenkova, {Anna Yu} and Andrey Saraev and Hartmuth Schr{\"o}ttner and Andrey Rempel",

year = "2021",

month = may,

day = "10",

doi = "10.1016/j.ijhydene.2020.12.190",

language = "English",

volume = "46",

pages = "16917--16924",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

publisher = "Elsevier Limited",

number = "32",

}

TY - JOUR

T1 - Solar photocatalysts based on titanium dioxide nanotubes for hydrogen evolution from aqueous solutions of ethanol

AU - Valeeva, Albina A.

AU - Dorosheva, Irina

AU - Kozlova, Ekatarina

AU - Sushnikova, Anna

AU - Kurenkova, Anna Yu

AU - Saraev, Andrey

AU - Schröttner, Hartmuth

AU - Rempel , Andrey

PY - 2021/5/10

Y1 - 2021/5/10

N2 - Titanium foil was anodized to grow titanium dioxide nanotubes (TiO 2 NT) by using an original technique. A solution of ethylene glycol and ammonium fluoride with a concentration of 0.5 wt% was employed as electrolyte, corrosion-resistant steel was chosen as the cathode material. Anodic oxidation was carried out potentiostatically at a voltage of 60 V at ambient temperature for 90 min. Modification of as prepared TiO 2 NT were modified by calcination in air at 350°C for 4 h. Platinization of TiO 2 NT was carried out by chemical reduction of platinum from H 2PtCl 6 solution by NaBH 4 solution. Photocatalyst characterization was performed by using XRD, BET, SEM, XPS techniques. It was found that the calcination of as-prepared TiO 2 NT leads to 6-fold increase of the photocatalytic activity under UV-irradiation. The enhanced activity of TiO 2 NT is associated with the developed specific surface area and unique morphology of TiO 2 NT. This results in high rate of separation of photogenerated excited electrons and holes. Due to high separation rate the catalytic activity increases substantially.

AB - Titanium foil was anodized to grow titanium dioxide nanotubes (TiO 2 NT) by using an original technique. A solution of ethylene glycol and ammonium fluoride with a concentration of 0.5 wt% was employed as electrolyte, corrosion-resistant steel was chosen as the cathode material. Anodic oxidation was carried out potentiostatically at a voltage of 60 V at ambient temperature for 90 min. Modification of as prepared TiO 2 NT were modified by calcination in air at 350°C for 4 h. Platinization of TiO 2 NT was carried out by chemical reduction of platinum from H 2PtCl 6 solution by NaBH 4 solution. Photocatalyst characterization was performed by using XRD, BET, SEM, XPS techniques. It was found that the calcination of as-prepared TiO 2 NT leads to 6-fold increase of the photocatalytic activity under UV-irradiation. The enhanced activity of TiO 2 NT is associated with the developed specific surface area and unique morphology of TiO 2 NT. This results in high rate of separation of photogenerated excited electrons and holes. Due to high separation rate the catalytic activity increases substantially.

KW - Ethanol solution

KW - Hydrogen evolution

KW - Titanium dioxide nanotubes

KW - Titanium foil anodization

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U2 - 10.1016/j.ijhydene.2020.12.190

DO - 10.1016/j.ijhydene.2020.12.190

M3 - Article

SN - 0360-3199

VL - 46

SP - 16917

EP - 16924

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 32

ER -

Solar photocatalysts based on titanium dioxide nanotubes for hydrogen evolution from aqueous solutions of ethanol

Abstract

Keywords

ASJC Scopus subject areas

Fields of Expertise

Treatment code (Nähere Zuordnung)

UN SDGs

Access to Document

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