Controllable synthesis of defective TiO2 nanorods for efficient hydrogen production
Nanorods (NRs), with their high atomic surface exposure within a crystalline architecture, facilitate effective diffusion/transport of charge, rendering them particularly suitable for applications requiring both interaction with the media and charge transfer. In this study, we present a straightforw...
| Autores: | , , , , , , , , , , |
|---|---|
| Formato: | artículo |
| Fecha de publicación: | 2024 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/423558 |
| Acesso em linha: | https://hdl.handle.net/2117/423558 https://dx.doi.org/10.1021/acsaelm.4c00821 |
| Access Level: | acceso abierto |
| Palavra-chave: | TiO2 nanorod Photocatalysis Hydrogen production Brookite Defect Àrees temàtiques de la UPC::Enginyeria química |
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Controllable synthesis of defective TiO2 nanorods for efficient hydrogen productionXing, CongcongYang, LinlinSpadaro, Maria ChiaraZhang, Yu|||0009-0006-6836-9500Guardia Girós, Pablo|||0000-0001-9076-4642Arbiol Cobos, JordiLiu, TianqiFan, XiaoleiFernández García, MarcosLlorca Piqué, Jordi|||0000-0002-7447-9582Cabot Codina, AndreuTiO2 nanorodPhotocatalysisHydrogen productionBrookiteDefectÀrees temàtiques de la UPC::Enginyeria químicaNanorods (NRs), with their high atomic surface exposure within a crystalline architecture, facilitate effective diffusion/transport of charge, rendering them particularly suitable for applications requiring both interaction with the media and charge transfer. In this study, we present a straightforward approach to produce brookite-phase titanium dioxide (TiO2) NRs with tunable defects and narrow size distributions by utilizing methylamine hydrochloride and 1,2-hexadecanediol as shape-directing agents. The presence of the Ti3+ defect was confirmed by electron paramagnetic resonance and X-ray photoelectron spectroscopy, and its effect on the photocatalytic properties of TiO2, with and without Pt loading, show that the longest TiO2 NRs provide the highest photocatalytic and photoelectrochemical hydrogen production activity. Transient photocurrent response analysis, electrochemical impedance spectroscopy, and Mott–Schottky analysis plots indicate that an increase in temperature significantly reduces the interface barrier and lowers the transport resistance, leading to a 104% improvement in hydrogen production rates from 25 to 60 °C for the longest TiO2 NRs. This study underscores the critical role of the TiO2 nanorod dimensions (18–45 nm) in elevating the hydrogen production efficiency. At 25 °C, rates surged from 1.6 to 2.6 mmol g–1 h–1, and at 60 °C, rates soared from 3.3 to 5.3 mmol g–1 h–1, demonstrating the substantial impact of TiO2 NRs on enhancing hydrogen generation.Peer ReviewedObjectius de Desenvolupament Sostenible::7 - Energia Assequible i No ContaminantObjectius de Desenvolupament Sostenible::13 - Acció per al ClimaAmerican Chemical Society (ACS)20242024-07-2220252025-02-06journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/423558https://dx.doi.org/10.1021/acsaelm.4c00821reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/4235582026-05-27T15:37:01Z |
| dc.title.none.fl_str_mv |
Controllable synthesis of defective TiO2 nanorods for efficient hydrogen production |
| title |
Controllable synthesis of defective TiO2 nanorods for efficient hydrogen production |
| spellingShingle |
Controllable synthesis of defective TiO2 nanorods for efficient hydrogen production Xing, Congcong TiO2 nanorod Photocatalysis Hydrogen production Brookite Defect Àrees temàtiques de la UPC::Enginyeria química |
| title_short |
Controllable synthesis of defective TiO2 nanorods for efficient hydrogen production |
| title_full |
Controllable synthesis of defective TiO2 nanorods for efficient hydrogen production |
| title_fullStr |
Controllable synthesis of defective TiO2 nanorods for efficient hydrogen production |
| title_full_unstemmed |
Controllable synthesis of defective TiO2 nanorods for efficient hydrogen production |
| title_sort |
Controllable synthesis of defective TiO2 nanorods for efficient hydrogen production |
| dc.creator.none.fl_str_mv |
Xing, Congcong Yang, Linlin Spadaro, Maria Chiara Zhang, Yu|||0009-0006-6836-9500 Guardia Girós, Pablo|||0000-0001-9076-4642 Arbiol Cobos, Jordi Liu, Tianqi Fan, Xiaolei Fernández García, Marcos Llorca Piqué, Jordi|||0000-0002-7447-9582 Cabot Codina, Andreu |
| author |
Xing, Congcong |
| author_facet |
Xing, Congcong Yang, Linlin Spadaro, Maria Chiara Zhang, Yu|||0009-0006-6836-9500 Guardia Girós, Pablo|||0000-0001-9076-4642 Arbiol Cobos, Jordi Liu, Tianqi Fan, Xiaolei Fernández García, Marcos Llorca Piqué, Jordi|||0000-0002-7447-9582 Cabot Codina, Andreu |
| author_role |
author |
| author2 |
Yang, Linlin Spadaro, Maria Chiara Zhang, Yu|||0009-0006-6836-9500 Guardia Girós, Pablo|||0000-0001-9076-4642 Arbiol Cobos, Jordi Liu, Tianqi Fan, Xiaolei Fernández García, Marcos Llorca Piqué, Jordi|||0000-0002-7447-9582 Cabot Codina, Andreu |
| author2_role |
author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
TiO2 nanorod Photocatalysis Hydrogen production Brookite Defect Àrees temàtiques de la UPC::Enginyeria química |
| topic |
TiO2 nanorod Photocatalysis Hydrogen production Brookite Defect Àrees temàtiques de la UPC::Enginyeria química |
| description |
Nanorods (NRs), with their high atomic surface exposure within a crystalline architecture, facilitate effective diffusion/transport of charge, rendering them particularly suitable for applications requiring both interaction with the media and charge transfer. In this study, we present a straightforward approach to produce brookite-phase titanium dioxide (TiO2) NRs with tunable defects and narrow size distributions by utilizing methylamine hydrochloride and 1,2-hexadecanediol as shape-directing agents. The presence of the Ti3+ defect was confirmed by electron paramagnetic resonance and X-ray photoelectron spectroscopy, and its effect on the photocatalytic properties of TiO2, with and without Pt loading, show that the longest TiO2 NRs provide the highest photocatalytic and photoelectrochemical hydrogen production activity. Transient photocurrent response analysis, electrochemical impedance spectroscopy, and Mott–Schottky analysis plots indicate that an increase in temperature significantly reduces the interface barrier and lowers the transport resistance, leading to a 104% improvement in hydrogen production rates from 25 to 60 °C for the longest TiO2 NRs. This study underscores the critical role of the TiO2 nanorod dimensions (18–45 nm) in elevating the hydrogen production efficiency. At 25 °C, rates surged from 1.6 to 2.6 mmol g–1 h–1, and at 60 °C, rates soared from 3.3 to 5.3 mmol g–1 h–1, demonstrating the substantial impact of TiO2 NRs on enhancing hydrogen generation. |
| publishDate |
2024 |
| dc.date.none.fl_str_mv |
2024 2024-07-22 2025 2025-02-06 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 AM http://purl.org/coar/version/c_ab4af688f83e57aa |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2117/423558 https://dx.doi.org/10.1021/acsaelm.4c00821 |
| url |
https://hdl.handle.net/2117/423558 https://dx.doi.org/10.1021/acsaelm.4c00821 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
American Chemical Society (ACS) |
| publisher.none.fl_str_mv |
American Chemical Society (ACS) |
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reponame:UPCommons. Portal del coneixement obert de la UPC instname:Universitat Politècnica de Catalunya (UPC) |
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Universitat Politècnica de Catalunya (UPC) |
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UPCommons. Portal del coneixement obert de la UPC |
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UPCommons. Portal del coneixement obert de la UPC |
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1869421693932404736 |
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15,198674 |