Phase-dependent electrocatalytic activities of Pt-anchored rutile, anatase and mixed anatase-rutile TiO2 nano-composites for methanol oxidation in alkali

Malay Chakraborty; Kamal Kanti Bera; Manas Mandal; Apurba Ray; Sachindranath Das; Trilochan Bhunia; Arup Gayen; Atanu Panda; Hyung Ho Park; Swapan Kumar Bhattacharya

doi:10.1016/j.solidstatesciences.2022.106903

Phase-dependent electrocatalytic activities of Pt-anchored rutile, anatase and mixed anatase-rutile TiO₂ nano-composites for methanol oxidation in alkali

Malay Chakraborty, Kamal Kanti Bera, Manas Mandal, Apurba Ray, Sachindranath Das, Trilochan Bhunia, Arup Gayen, Atanu Panda, Hyung Ho Park, Swapan Kumar Bhattacharya

Department of Materials Science and Engineering

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

1 Citation (Scopus)

Abstract

Anatase, rutile and mixed anatase-rutile TiO₂ are synthesized using a single pot sol-gel technique followed by variation of calcination temperature. The Pt decorated synthesized catalysts have been characterized by diffraction, spectroscopic and microscopic analyses. The cyclic voltammetry (CV) study reveals the increase of forward peak current density of methanol oxidation in alkali on Pt-anchored mixed-phase TiO₂ (Pt/ARTiO₂) (324.8 A g⁻¹) by 4 and 2.5 times than that on Pt-containing rutile and anatase phases. The charge transfer conductance of the former electrode (1/184 Ω⁻¹) is 5.7 and 8.7 times greater compare to that of the laters. The phase-dependent electrocatalytic activity of the electrodes and large retention (95%) of maximum peak current density at 500th CV cycle for the best electrode, are analyzed by different product selectivity of the electrodes. Pt/ARTiO₂ is found to be the best current provider and reliable as it accelerates the formation of formate instead of carbonate.

Original language	English
Article number	106903
Journal	Solid State Sciences
Volume	129
DOIs	https://doi.org/10.1016/j.solidstatesciences.2022.106903
Publication status	Published - 2022 Jul

Bibliographical note

Funding Information:
The authors acknowledge Jadavpur University, India, for instrumental help. The authors wish to thank Dr. Saurabh Das, Jadavpur University, Kolkata-700032, for HPLC analysis.

Publisher Copyright:
© 2022 Elsevier Masson SAS

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1016/j.solidstatesciences.2022.106903

Cite this

Chakraborty, M., Bera, K. K., Mandal, M., Ray, A., Das, S., Bhunia, T., Gayen, A., Panda, A., Park, H. H., & Bhattacharya, S. K. (2022). Phase-dependent electrocatalytic activities of Pt-anchored rutile, anatase and mixed anatase-rutile TiO₂ nano-composites for methanol oxidation in alkali. Solid State Sciences, 129, [106903]. https://doi.org/10.1016/j.solidstatesciences.2022.106903

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abstract = "Anatase, rutile and mixed anatase-rutile TiO2 are synthesized using a single pot sol-gel technique followed by variation of calcination temperature. The Pt decorated synthesized catalysts have been characterized by diffraction, spectroscopic and microscopic analyses. The cyclic voltammetry (CV) study reveals the increase of forward peak current density of methanol oxidation in alkali on Pt-anchored mixed-phase TiO2 (Pt/ARTiO2) (324.8 A g−1) by 4 and 2.5 times than that on Pt-containing rutile and anatase phases. The charge transfer conductance of the former electrode (1/184 Ω−1) is 5.7 and 8.7 times greater compare to that of the laters. The phase-dependent electrocatalytic activity of the electrodes and large retention (95%) of maximum peak current density at 500th CV cycle for the best electrode, are analyzed by different product selectivity of the electrodes. Pt/ARTiO2 is found to be the best current provider and reliable as it accelerates the formation of formate instead of carbonate.",

author = "Malay Chakraborty and Bera, {Kamal Kanti} and Manas Mandal and Apurba Ray and Sachindranath Das and Trilochan Bhunia and Arup Gayen and Atanu Panda and Park, {Hyung Ho} and Bhattacharya, {Swapan Kumar}",

note = "Funding Information: The authors acknowledge Jadavpur University, India, for instrumental help. The authors wish to thank Dr. Saurabh Das, Jadavpur University, Kolkata-700032, for HPLC analysis. Publisher Copyright: {\textcopyright} 2022 Elsevier Masson SAS",

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Chakraborty, M, Bera, KK, Mandal, M, Ray, A, Das, S, Bhunia, T, Gayen, A, Panda, A, Park, HH & Bhattacharya, SK 2022, 'Phase-dependent electrocatalytic activities of Pt-anchored rutile, anatase and mixed anatase-rutile TiO₂ nano-composites for methanol oxidation in alkali', Solid State Sciences, vol. 129, 106903. https://doi.org/10.1016/j.solidstatesciences.2022.106903

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AU - Chakraborty, Malay

AU - Bera, Kamal Kanti

AU - Mandal, Manas

AU - Ray, Apurba

AU - Das, Sachindranath

AU - Bhunia, Trilochan

AU - Gayen, Arup

AU - Panda, Atanu

AU - Park, Hyung Ho

AU - Bhattacharya, Swapan Kumar

N1 - Funding Information: The authors acknowledge Jadavpur University, India, for instrumental help. The authors wish to thank Dr. Saurabh Das, Jadavpur University, Kolkata-700032, for HPLC analysis. Publisher Copyright: © 2022 Elsevier Masson SAS

PY - 2022/7

Y1 - 2022/7

N2 - Anatase, rutile and mixed anatase-rutile TiO2 are synthesized using a single pot sol-gel technique followed by variation of calcination temperature. The Pt decorated synthesized catalysts have been characterized by diffraction, spectroscopic and microscopic analyses. The cyclic voltammetry (CV) study reveals the increase of forward peak current density of methanol oxidation in alkali on Pt-anchored mixed-phase TiO2 (Pt/ARTiO2) (324.8 A g−1) by 4 and 2.5 times than that on Pt-containing rutile and anatase phases. The charge transfer conductance of the former electrode (1/184 Ω−1) is 5.7 and 8.7 times greater compare to that of the laters. The phase-dependent electrocatalytic activity of the electrodes and large retention (95%) of maximum peak current density at 500th CV cycle for the best electrode, are analyzed by different product selectivity of the electrodes. Pt/ARTiO2 is found to be the best current provider and reliable as it accelerates the formation of formate instead of carbonate.

AB - Anatase, rutile and mixed anatase-rutile TiO2 are synthesized using a single pot sol-gel technique followed by variation of calcination temperature. The Pt decorated synthesized catalysts have been characterized by diffraction, spectroscopic and microscopic analyses. The cyclic voltammetry (CV) study reveals the increase of forward peak current density of methanol oxidation in alkali on Pt-anchored mixed-phase TiO2 (Pt/ARTiO2) (324.8 A g−1) by 4 and 2.5 times than that on Pt-containing rutile and anatase phases. The charge transfer conductance of the former electrode (1/184 Ω−1) is 5.7 and 8.7 times greater compare to that of the laters. The phase-dependent electrocatalytic activity of the electrodes and large retention (95%) of maximum peak current density at 500th CV cycle for the best electrode, are analyzed by different product selectivity of the electrodes. Pt/ARTiO2 is found to be the best current provider and reliable as it accelerates the formation of formate instead of carbonate.

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