TiO2 Nanotubes Supported PtOx Nanoclusters with Enhanced Mass Activity for Electrocatalytic Hydrogen Evolution

Khaled M. AlAqad; Tarek A. Kandiel; Chanbasha Basheer

doi:10.1002/cctc.202000828

TiO₂ Nanotubes Supported PtO_x Nanoclusters with Enhanced Mass Activity for Electrocatalytic Hydrogen Evolution

Khaled M. AlAqad
, Tarek A. Kandiel^*
, Chanbasha Basheer

^*Corresponding author for this work

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

16 Scopus citations

Abstract

Developing proper supports to enhance Pt mass activity is crucial for the practical application of electrocatalytic hydrogen evolution reaction (HER). Herein, TiO₂ nanotubes (TNTs) support is fabricated via anodizing Ti foil and loaded with PtO_x nanoclusters using a facile photo-deposition method. The formation of PtO_x was confirmed by X-ray photoelectron spectroscopy analysis. Interestingly, the TNTs supported PtO_x (Ti/TNTs/PtO_x) electrocatalyst showed superior activity towards HER than the benchmark Pt/C and TiO₂ nanoparticles (TNPs) supported PtO_x electrocatalysts. An overpotential of −30 mV was sufficient to deliver −10 mA cm⁻² from the acidic medium. The electrocatalytic mass activity of Ti/TNTs/PtO_x (i. e. 204 mA mg⁻¹) is enhanced by 12 and 1.7-fold in comparison with those of Pt/C and TNPs supported PtO_x electrocatalysts, respectively. The superior activity of Ti/TNTs/PtO_x is mainly due to its large electrochemical active surface area and the excellent electron mobility in TNTs support.

Original language	English
Pages (from-to)	5411-5419
Number of pages	9
Journal	ChemCatChem
Volume	12
Issue number	21
DOIs	https://doi.org/10.1002/cctc.202000828
State	Published - 5 Nov 2020

Bibliographical note

Publisher Copyright:
© 2020 Wiley-VCH GmbH

Keywords

Hydrogen Evolution Reaction
Photo-assisted deposition
PtO nanoclusters
TNTs electrocatalyst support
Water splitting

ASJC Scopus subject areas

Catalysis
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

UN SDGs

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

Access to Document

10.1002/cctc.202000828

Cite this

@article{900197cf21694bd095ce145a613d8faf,

title = "TiO2 Nanotubes Supported PtOx Nanoclusters with Enhanced Mass Activity for Electrocatalytic Hydrogen Evolution",

abstract = "Developing proper supports to enhance Pt mass activity is crucial for the practical application of electrocatalytic hydrogen evolution reaction (HER). Herein, TiO2 nanotubes (TNTs) support is fabricated via anodizing Ti foil and loaded with PtOx nanoclusters using a facile photo-deposition method. The formation of PtOx was confirmed by X-ray photoelectron spectroscopy analysis. Interestingly, the TNTs supported PtOx (Ti/TNTs/PtOx) electrocatalyst showed superior activity towards HER than the benchmark Pt/C and TiO2 nanoparticles (TNPs) supported PtOx electrocatalysts. An overpotential of −30 mV was sufficient to deliver −10 mA cm−2 from the acidic medium. The electrocatalytic mass activity of Ti/TNTs/PtOx (i. e. 204 mA mg−1) is enhanced by 12 and 1.7-fold in comparison with those of Pt/C and TNPs supported PtOx electrocatalysts, respectively. The superior activity of Ti/TNTs/PtOx is mainly due to its large electrochemical active surface area and the excellent electron mobility in TNTs support.",

keywords = "Hydrogen Evolution Reaction, Photo-assisted deposition, PtO nanoclusters, TNTs electrocatalyst support, Water splitting",

author = "AlAqad, \{Khaled M.\} and Kandiel, \{Tarek A.\} and Chanbasha Basheer",

note = "Publisher Copyright: {\textcopyright} 2020 Wiley-VCH GmbH",

year = "2020",

month = nov,

day = "5",

doi = "10.1002/cctc.202000828",

language = "English",

volume = "12",

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AU - AlAqad, Khaled M.

AU - Kandiel, Tarek A.

AU - Basheer, Chanbasha

PY - 2020/11/5

Y1 - 2020/11/5

N2 - Developing proper supports to enhance Pt mass activity is crucial for the practical application of electrocatalytic hydrogen evolution reaction (HER). Herein, TiO2 nanotubes (TNTs) support is fabricated via anodizing Ti foil and loaded with PtOx nanoclusters using a facile photo-deposition method. The formation of PtOx was confirmed by X-ray photoelectron spectroscopy analysis. Interestingly, the TNTs supported PtOx (Ti/TNTs/PtOx) electrocatalyst showed superior activity towards HER than the benchmark Pt/C and TiO2 nanoparticles (TNPs) supported PtOx electrocatalysts. An overpotential of −30 mV was sufficient to deliver −10 mA cm−2 from the acidic medium. The electrocatalytic mass activity of Ti/TNTs/PtOx (i. e. 204 mA mg−1) is enhanced by 12 and 1.7-fold in comparison with those of Pt/C and TNPs supported PtOx electrocatalysts, respectively. The superior activity of Ti/TNTs/PtOx is mainly due to its large electrochemical active surface area and the excellent electron mobility in TNTs support.

AB - Developing proper supports to enhance Pt mass activity is crucial for the practical application of electrocatalytic hydrogen evolution reaction (HER). Herein, TiO2 nanotubes (TNTs) support is fabricated via anodizing Ti foil and loaded with PtOx nanoclusters using a facile photo-deposition method. The formation of PtOx was confirmed by X-ray photoelectron spectroscopy analysis. Interestingly, the TNTs supported PtOx (Ti/TNTs/PtOx) electrocatalyst showed superior activity towards HER than the benchmark Pt/C and TiO2 nanoparticles (TNPs) supported PtOx electrocatalysts. An overpotential of −30 mV was sufficient to deliver −10 mA cm−2 from the acidic medium. The electrocatalytic mass activity of Ti/TNTs/PtOx (i. e. 204 mA mg−1) is enhanced by 12 and 1.7-fold in comparison with those of Pt/C and TNPs supported PtOx electrocatalysts, respectively. The superior activity of Ti/TNTs/PtOx is mainly due to its large electrochemical active surface area and the excellent electron mobility in TNTs support.

KW - Hydrogen Evolution Reaction

KW - Photo-assisted deposition

KW - PtO nanoclusters

KW - TNTs electrocatalyst support

KW - Water splitting

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