Attraction in Action: Reduction of Water to Dihydrogen Using Surface-Functionalized TiO<sub>2</sub> Nanoparticles

The reactivity of a heterogeneous rhodium(III) and ruthenium(II) complex-functionalized TiO<sub>2</sub> nanoparticle (NP) system is reported. The ruthenium and rhodium metal complexes work in tandem on the TiO<sub>2</sub> NPs surface to generate H<sub>2</sub> thro...

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Main Authors: Sven A. Freimann, Catherine E. Housecroft, Edwin C. Constable
Format: Article
Language:English
Published: MDPI AG 2022-02-01
Series:Nanomaterials
Subjects:
Online Access:https://www.mdpi.com/2079-4991/12/5/789
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author Sven A. Freimann
Catherine E. Housecroft
Edwin C. Constable
author_facet Sven A. Freimann
Catherine E. Housecroft
Edwin C. Constable
author_sort Sven A. Freimann
collection DOAJ
description The reactivity of a heterogeneous rhodium(III) and ruthenium(II) complex-functionalized TiO<sub>2</sub> nanoparticle (NP) system is reported. The ruthenium and rhodium metal complexes work in tandem on the TiO<sub>2</sub> NPs surface to generate H<sub>2</sub> through water reduction under simulated and normal sunlight irradiation. The functionalized TiO<sub>2</sub> NPs outperformed previously reported homogeneous systems in turnover number (TON) and frequency (TOF). The influence of individual components within the system, such as pH, additive, and catalyst, were tested. The NP material was characterized using TGA-MS, <sup>1</sup>H NMR spectroscopy, FTIR spectroscopy, solid absorption spectroscopy, and ICP-MS. Gas chromatography was used to determine the reaction kinetics and recyclability of the NP-supported photocatalyst.
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spelling doaj.art-67bb0824a9df47acbe4c2fb922a230fe2023-11-23T23:30:11ZengMDPI AGNanomaterials2079-49912022-02-0112578910.3390/nano12050789Attraction in Action: Reduction of Water to Dihydrogen Using Surface-Functionalized TiO<sub>2</sub> NanoparticlesSven A. Freimann0Catherine E. Housecroft1Edwin C. Constable2Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, SwitzerlandDepartment of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, SwitzerlandDepartment of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, SwitzerlandThe reactivity of a heterogeneous rhodium(III) and ruthenium(II) complex-functionalized TiO<sub>2</sub> nanoparticle (NP) system is reported. The ruthenium and rhodium metal complexes work in tandem on the TiO<sub>2</sub> NPs surface to generate H<sub>2</sub> through water reduction under simulated and normal sunlight irradiation. The functionalized TiO<sub>2</sub> NPs outperformed previously reported homogeneous systems in turnover number (TON) and frequency (TOF). The influence of individual components within the system, such as pH, additive, and catalyst, were tested. The NP material was characterized using TGA-MS, <sup>1</sup>H NMR spectroscopy, FTIR spectroscopy, solid absorption spectroscopy, and ICP-MS. Gas chromatography was used to determine the reaction kinetics and recyclability of the NP-supported photocatalyst.https://www.mdpi.com/2079-4991/12/5/789nanoparticlesanchored-catalystheterogeneous catalysiswater reduction
spellingShingle Sven A. Freimann
Catherine E. Housecroft
Edwin C. Constable
Attraction in Action: Reduction of Water to Dihydrogen Using Surface-Functionalized TiO<sub>2</sub> Nanoparticles
Nanomaterials
nanoparticles
anchored-catalyst
heterogeneous catalysis
water reduction
title Attraction in Action: Reduction of Water to Dihydrogen Using Surface-Functionalized TiO<sub>2</sub> Nanoparticles
title_full Attraction in Action: Reduction of Water to Dihydrogen Using Surface-Functionalized TiO<sub>2</sub> Nanoparticles
title_fullStr Attraction in Action: Reduction of Water to Dihydrogen Using Surface-Functionalized TiO<sub>2</sub> Nanoparticles
title_full_unstemmed Attraction in Action: Reduction of Water to Dihydrogen Using Surface-Functionalized TiO<sub>2</sub> Nanoparticles
title_short Attraction in Action: Reduction of Water to Dihydrogen Using Surface-Functionalized TiO<sub>2</sub> Nanoparticles
title_sort attraction in action reduction of water to dihydrogen using surface functionalized tio sub 2 sub nanoparticles
topic nanoparticles
anchored-catalyst
heterogeneous catalysis
water reduction
url https://www.mdpi.com/2079-4991/12/5/789
work_keys_str_mv AT svenafreimann attractioninactionreductionofwatertodihydrogenusingsurfacefunctionalizedtiosub2subnanoparticles
AT catherineehousecroft attractioninactionreductionofwatertodihydrogenusingsurfacefunctionalizedtiosub2subnanoparticles
AT edwincconstable attractioninactionreductionofwatertodihydrogenusingsurfacefunctionalizedtiosub2subnanoparticles