Syngas production by electrocatalytic reduction of CO                                                 2                                                  using Ag-decorated TiO                                                 2                                                  nanotubes

M. A. Farkhondehfal; S. Hernández; M. Rattalino; M. Makkee; A. Lamberti; A. Chiodoni; K. Bejtka; A. Sacco; F. C. Pirri; N. Russo

doi:10.1016/j.ijhydene.2019.04.180

Syngas production by electrocatalytic reduction of CO ₂ using Ag-decorated TiO ₂ nanotubes

M. A. Farkhondehfal^*, S. Hernández, M. Rattalino, M. Makkee, A. Lamberti, A. Chiodoni, K. Bejtka, A. Sacco, F. C. Pirri, N. Russo

^*Corresponding author for this work

ChemE/Catalysis Engineering

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

43 Citations (Scopus)

120 Downloads (Pure)

Abstract

Huge efforts have been done in the last years on electrochemical and photoelectrochemical reduction of CO ₂ to offer a sustainable route to recycle CO ₂ . A promising route is to electrochemically reduce CO ₂ into CO which, by combination with hydrogen, can be used as a feedstock to different added-value products or fuels. Herein, perpendicular oriented TiO ₂ nanotubes (NTs) on the electrode plate were grown by anodic oxidation of titanium substrate and then decorated by a low loading of silver nanoparticles deposited by sputtering (i.e. Ag/TiO ₂ NTs). Due to their quasi one-dimensional arrangement, TiO ₂ NTs are able to provide higher surface area for Ag adhesion and superior electron transport properties than other Ti substrates (e.g. Ti foil and TiO ₂ nanoparticles), as confirmed by electrochemical (CV, EIS, electrochemical active surface area) and chemical/morphological analysis (FESEM, TEM, EDS). These characteristics together with the role of the TiO ₂ NTs to enhance the stability of CO ₂ ^·- intermediate formed due to titania redox couple (Ti ^IV /Ti ^III ) lead to an improvement of the CO production in the Ag/TiO ₂ NTs electrodes. Particular attention has been devoted to reduce the loading of noble metal in the electrode(14.5 %w/%w) and to increase the catalysts active surface area in order to decrease the required overpotential.

Original language	English
Pages (from-to)	26458-26471
Journal	International Journal of Hydrogen Energy
Volume	45
Issue number	50
DOIs	https://doi.org/10.1016/j.ijhydene.2019.04.180
Publication status	Published - 2019

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

CO2 reduction
Electrocatalyst
Electrochemical surface area
Silver nano particles
Titania nanotube

UN SDGs

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

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Cite this

Farkhondehfal, M. A., Hernández, S., Rattalino, M., Makkee, M., Lamberti, A., Chiodoni, A., Bejtka, K., Sacco, A., Pirri, F. C., & Russo, N. (2019). Syngas production by electrocatalytic reduction of CO ₂ using Ag-decorated TiO ₂ nanotubes. International Journal of Hydrogen Energy, 45(50), 26458-26471. https://doi.org/10.1016/j.ijhydene.2019.04.180

Farkhondehfal, M. A. ; Hernández, S. ; Rattalino, M. et al. / Syngas production by electrocatalytic reduction of CO ₂ using Ag-decorated TiO ₂ nanotubes. In: International Journal of Hydrogen Energy. 2019 ; Vol. 45, No. 50. pp. 26458-26471.

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title = "Syngas production by electrocatalytic reduction of CO 2 using Ag-decorated TiO 2 nanotubes",

abstract = " Huge efforts have been done in the last years on electrochemical and photoelectrochemical reduction of CO 2 to offer a sustainable route to recycle CO 2 . A promising route is to electrochemically reduce CO 2 into CO which, by combination with hydrogen, can be used as a feedstock to different added-value products or fuels. Herein, perpendicular oriented TiO 2 nanotubes (NTs) on the electrode plate were grown by anodic oxidation of titanium substrate and then decorated by a low loading of silver nanoparticles deposited by sputtering (i.e. Ag/TiO 2 NTs). Due to their quasi one-dimensional arrangement, TiO 2 NTs are able to provide higher surface area for Ag adhesion and superior electron transport properties than other Ti substrates (e.g. Ti foil and TiO 2 nanoparticles), as confirmed by electrochemical (CV, EIS, electrochemical active surface area) and chemical/morphological analysis (FESEM, TEM, EDS). These characteristics together with the role of the TiO 2 NTs to enhance the stability of CO 2 ·- intermediate formed due to titania redox couple (Ti IV /Ti III ) lead to an improvement of the CO production in the Ag/TiO 2 NTs electrodes. Particular attention has been devoted to reduce the loading of noble metal in the electrode(14.5 %w/%w) and to increase the catalysts active surface area in order to decrease the required overpotential. ",

keywords = "CO2 reduction, Electrocatalyst, Electrochemical surface area, Silver nano particles, Titania nanotube",

author = "Farkhondehfal, {M. A.} and S. Hern{\'a}ndez and M. Rattalino and M. Makkee and A. Lamberti and A. Chiodoni and K. Bejtka and A. Sacco and Pirri, {F. C.} and N. Russo",

note = "Green Open Access added to TU Delft Institutional Repository {\textquoteleft}You share, we take care!{\textquoteright} – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.",

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Farkhondehfal, MA, Hernández, S, Rattalino, M, Makkee, M, Lamberti, A, Chiodoni, A, Bejtka, K, Sacco, A, Pirri, FC & Russo, N 2019, 'Syngas production by electrocatalytic reduction of CO ₂ using Ag-decorated TiO ₂ nanotubes', International Journal of Hydrogen Energy, vol. 45, no. 50, pp. 26458-26471. https://doi.org/10.1016/j.ijhydene.2019.04.180

Syngas production by electrocatalytic reduction of CO ₂ using Ag-decorated TiO ₂ nanotubes. / Farkhondehfal, M. A.; Hernández, S.; Rattalino, M. et al.
In: International Journal of Hydrogen Energy, Vol. 45, No. 50, 2019, p. 26458-26471.

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

TY - JOUR

T1 - Syngas production by electrocatalytic reduction of CO 2 using Ag-decorated TiO 2 nanotubes

AU - Farkhondehfal, M. A.

AU - Hernández, S.

AU - Rattalino, M.

AU - Makkee, M.

AU - Lamberti, A.

AU - Chiodoni, A.

AU - Bejtka, K.

AU - Sacco, A.

AU - Pirri, F. C.

AU - Russo, N.

N1 - Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

PY - 2019

Y1 - 2019

N2 - Huge efforts have been done in the last years on electrochemical and photoelectrochemical reduction of CO 2 to offer a sustainable route to recycle CO 2 . A promising route is to electrochemically reduce CO 2 into CO which, by combination with hydrogen, can be used as a feedstock to different added-value products or fuels. Herein, perpendicular oriented TiO 2 nanotubes (NTs) on the electrode plate were grown by anodic oxidation of titanium substrate and then decorated by a low loading of silver nanoparticles deposited by sputtering (i.e. Ag/TiO 2 NTs). Due to their quasi one-dimensional arrangement, TiO 2 NTs are able to provide higher surface area for Ag adhesion and superior electron transport properties than other Ti substrates (e.g. Ti foil and TiO 2 nanoparticles), as confirmed by electrochemical (CV, EIS, electrochemical active surface area) and chemical/morphological analysis (FESEM, TEM, EDS). These characteristics together with the role of the TiO 2 NTs to enhance the stability of CO 2 ·- intermediate formed due to titania redox couple (Ti IV /Ti III ) lead to an improvement of the CO production in the Ag/TiO 2 NTs electrodes. Particular attention has been devoted to reduce the loading of noble metal in the electrode(14.5 %w/%w) and to increase the catalysts active surface area in order to decrease the required overpotential.

AB - Huge efforts have been done in the last years on electrochemical and photoelectrochemical reduction of CO 2 to offer a sustainable route to recycle CO 2 . A promising route is to electrochemically reduce CO 2 into CO which, by combination with hydrogen, can be used as a feedstock to different added-value products or fuels. Herein, perpendicular oriented TiO 2 nanotubes (NTs) on the electrode plate were grown by anodic oxidation of titanium substrate and then decorated by a low loading of silver nanoparticles deposited by sputtering (i.e. Ag/TiO 2 NTs). Due to their quasi one-dimensional arrangement, TiO 2 NTs are able to provide higher surface area for Ag adhesion and superior electron transport properties than other Ti substrates (e.g. Ti foil and TiO 2 nanoparticles), as confirmed by electrochemical (CV, EIS, electrochemical active surface area) and chemical/morphological analysis (FESEM, TEM, EDS). These characteristics together with the role of the TiO 2 NTs to enhance the stability of CO 2 ·- intermediate formed due to titania redox couple (Ti IV /Ti III ) lead to an improvement of the CO production in the Ag/TiO 2 NTs electrodes. Particular attention has been devoted to reduce the loading of noble metal in the electrode(14.5 %w/%w) and to increase the catalysts active surface area in order to decrease the required overpotential.

KW - CO2 reduction

KW - Electrocatalyst

KW - Electrochemical surface area

KW - Silver nano particles

KW - Titania nanotube

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Farkhondehfal MA, Hernández S, Rattalino M, Makkee M, Lamberti A, Chiodoni A et al. Syngas production by electrocatalytic reduction of CO ₂ using Ag-decorated TiO ₂ nanotubes. International Journal of Hydrogen Energy. 2019;45(50):26458-26471. doi: 10.1016/j.ijhydene.2019.04.180