High-speed solid state fluorination of Nb2O5 yields NbO2F and Nb3O7F with photocatalytic activity for oxygen evolution from water
- Publikationstyp:
- Zeitschriftenaufsatz
- Metadaten:
-
- Autoren
- Martin Alexander Lange
- Ibrahim Khan
- Rene Doeren
- Muhammad Ashraf
- Ahsanulhaq Qurashi
- Leon Praedel
- Martin Panthoefer
- Marcus von der Au
- Antje Cossmer
- Jens Pfeifer
- Bjoern Meermann
- Mihail Mondeshki
- Muhammad Nawaz Tahir
- Wolfgang Tremel
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000635220600001&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.1039/d1dt00533b
- eISSN
- 1477-9234
- Externe Identifier
- Clarivate Analytics Document Solution ID: SD7SF
- PubMed Identifier: 34002749
- ISSN
- 1477-9226
- Ausgabe der Veröffentlichung
- 19
- Zeitschrift
- DALTON TRANSACTIONS
- Paginierung
- 6528 - 6538
- Datum der Veröffentlichung
- 2021
- Status
- Published
- Titel
- High-speed solid state fluorination of Nb<sub>2</sub>O<sub>5</sub> yields NbO<sub>2</sub>F and Nb<sub>3</sub>O<sub>7</sub>F with photocatalytic activity for oxygen evolution from water
- Sub types
- Article
- Ausgabe der Zeitschrift
- 50
Datenquelle: Web of Science (Lite)
- Andere Metadatenquellen:
-
- Abstract
- <p>NbO<sub>2</sub>F and Nb<sub>3</sub>O<sub>7</sub>F were prepared by field-assisted chemistry from Nb<sub>2</sub>O<sub>5</sub> and Teflon scrap in minutes, while chemistry requires days. NbO<sub>2</sub>F and Nb<sub>3</sub>O<sub>7</sub>F show high photocatalytic activity for water splitting, whereas the conventional products are inactive.</p>
- Autoren
- Martin Alexander Lange
- Ibrahim Khan
- René Dören
- Muhammad Ashraf
- Ahsanulhaq Qurashi
- Leon Prädel
- Martin Panthöfer
- Marcus von der Au
- Antje Cossmer
- Jens Pfeifer
- Björn Meermann
- Mihail Mondeshki
- Muhammad Nawaz Tahir
- Wolfgang Tremel
- DOI
- 10.1039/d1dt00533b
- eISSN
- 1477-9234
- ISSN
- 1477-9226
- Ausgabe der Veröffentlichung
- 19
- Zeitschrift
- Dalton Transactions
- Sprache
- en
- Online publication date
- 2021
- Paginierung
- 6528 - 6538
- Status
- Published online
- Herausgeber
- Royal Society of Chemistry (RSC)
- Herausgeber URL
- http://dx.doi.org/10.1039/d1dt00533b
- Datum der Datenerfassung
- 2024
- Titel
- High-speed solid state fluorination of Nb<sub>2</sub>O<sub>5</sub> yields NbO<sub>2</sub>F and Nb<sub>3</sub>O<sub>7</sub>F with photocatalytic activity for oxygen evolution from water
- Ausgabe der Zeitschrift
- 50
Datenquelle: Crossref
- Abstract
- Solid state reactions are slow because the diffusion of atoms or ions through the reactant, intermediate and crystalline product phases is the rate-limiting step. This requires days or even weeks of high temperature treatment, and consumption of large amounts of energy. We employed spark-plasma sintering, an engineering technique that is used for high-speed consolidation of powders with a pulsed electric current passing through the sample to carry out the fluorination of niobium oxide in minute intervals. The approach saves time and large amounts of waste energy. Moreover, it allows the preparation of fluorinated niobium oxides on a gram scale using poly(tetrafluoroethylene) (®Teflon) scrap and without toxic chemicals. The synthesis can be upscaled easily to the kg range with appropriate sintering equipment. Finally, NbO2F and Nb3O7F prepared by spark plasma sintering show significant photoelectrocatalytic (PEC) oxygen evolution from water in terms of photocurrent density and incident photon-to-current efficiency (% IPCE), whereas NbO2F and Nb3O7F prepared by conventional high temperature chemistry show little to no PEC response. Our study is a proof of concept for the quick, clean and energy saving production of valuable photocatalysts from plastic waste.
- Addresses
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany. tremel@uni-mainz.de.
- Autoren
- Martin Alexander Lange
- Ibrahim Khan
- René Dören
- Muhammad Ashraf
- Ahsanulhaq Qurashi
- Leon Prädel
- Martin Panthöfer
- Marcus von der Au
- Antje Cossmer
- Jens Pfeifer
- Björn Meermann
- Mihail Mondeshki
- Muhammad Nawaz Tahir
- Wolfgang Tremel
- DOI
- 10.1039/d1dt00533b
- eISSN
- 1477-9234
- Externe Identifier
- PubMed Identifier: 34002749
- Funding acknowledgements
- Deutsche Forschungsgemeinschaft: TR 210/37-1
- Open access
- false
- ISSN
- 1477-9226
- Ausgabe der Veröffentlichung
- 19
- Zeitschrift
- Dalton transactions (Cambridge, England : 2003)
- Sprache
- eng
- Medium
- Paginierung
- 6528 - 6538
- Datum der Veröffentlichung
- 2021
- Status
- Published
- Datum der Datenerfassung
- 2021
- Titel
- High-speed solid state fluorination of Nb<sub>2</sub>O<sub>5</sub> yields NbO<sub>2</sub>F and Nb<sub>3</sub>O<sub>7</sub>F with photocatalytic activity for oxygen evolution from water.
- Sub types
- Journal Article
- Ausgabe der Zeitschrift
- 50
Datenquelle: Europe PubMed Central
- Abstract
- Solid state reactions are slow because the diffusion of atoms or ions through the reactant, intermediate and crystalline product phases is the rate-limiting step. This requires days or even weeks of high temperature treatment, and consumption of large amounts of energy. We employed spark-plasma sintering, an engineering technique that is used for high-speed consolidation of powders with a pulsed electric current passing through the sample to carry out the fluorination of niobium oxide in minute intervals. The approach saves time and large amounts of waste energy. Moreover, it allows the preparation of fluorinated niobium oxides on a gram scale using poly(tetrafluoroethylene) (®Teflon) scrap and without toxic chemicals. The synthesis can be upscaled easily to the kg range with appropriate sintering equipment. Finally, NbO2F and Nb3O7F prepared by spark plasma sintering show significant photoelectrocatalytic (PEC) oxygen evolution from water in terms of photocurrent density and incident photon-to-current efficiency (% IPCE), whereas NbO2F and Nb3O7F prepared by conventional high temperature chemistry show little to no PEC response. Our study is a proof of concept for the quick, clean and energy saving production of valuable photocatalysts from plastic waste.
- Autoren
- Martin Alexander Lange
- Ibrahim Khan
- René Dören
- Muhammad Ashraf
- Ahsanulhaq Qurashi
- Leon Prädel
- Martin Panthöfer
- Marcus von der Au
- Antje Cossmer
- Jens Pfeifer
- Björn Meermann
- Mihail Mondeshki
- Muhammad Nawaz Tahir
- Wolfgang Tremel
- Autoren-URL
- https://www.ncbi.nlm.nih.gov/pubmed/34002749
- DOI
- 10.1039/d1dt00533b
- eISSN
- 1477-9234
- Ausgabe der Veröffentlichung
- 19
- Zeitschrift
- Dalton Trans
- Sprache
- eng
- Country
- England
- Paginierung
- 6528 - 6538
- Datum der Veröffentlichung
- 2021
- Status
- Published
- Titel
- High-speed solid state fluorination of Nb2O5 yields NbO2F and Nb3O7F with photocatalytic activity for oxygen evolution from water.
- Sub types
- Journal Article
- Ausgabe der Zeitschrift
- 50
Datenquelle: PubMed
- Beziehungen:
-