Nano-ferrites for water splitting: Unprecedented high photocatalytic hydrogen production under visible light

Handle URI:
http://hdl.handle.net/10754/562012
Title:
Nano-ferrites for water splitting: Unprecedented high photocatalytic hydrogen production under visible light
Authors:
Mangrulkar, Priti A.; Polshettiwar, Vivek ( 0000-0003-1375-9668 ) ; Labhsetwar, Nitin K.; Varma, Rajender S.; Rayalu, Sadhana Suresh
Abstract:
In the present investigation, hydrogen production via water splitting by nano-ferrites was studied using ethanol as the sacrificial donor and Pt as co-catalyst. Nano-ferrite is emerging as a promising photocatalyst with a hydrogen evolution rate of 8.275 μmol h -1 and a hydrogen yield of 8275 μmol h -1 g -1 under visible light compared to 0.0046 μmol h -1 for commercial iron oxide (tested under similar experimental conditions). Nano-ferrites were tested in three different photoreactor configurations. The rate of hydrogen evolution by nano-ferrite was significantly influenced by the photoreactor configuration. Altering the reactor configuration led to sevenfold (59.55 μmol h -1) increase in the hydrogen evolution rate. Nano-ferrites have shown remarkable stability in hydrogen production up to 30 h and the cumulative hydrogen evolution rate was observed to be 98.79 μmol h -1. The hydrogen yield was seen to be influenced by several factors like photocatalyst dose, illumination intensity, irradiation time, sacrificial donor and presence of co-catalyst. These were then investigated in detail. It was evident from the experimental data that nano-ferrites under optimized reaction conditions and photoreactor configuration could lead to remarkable hydrogen evolution activity under visible light. Temperature had a significant role in enhancing the hydrogen yield. © 2012 The Royal Society of Chemistry.
KAUST Department:
KAUST Catalysis Center (KCC); Physical Sciences and Engineering (PSE) Division
Publisher:
Royal Society of Chemistry
Journal:
Nanoscale
Issue Date:
2012
DOI:
10.1039/c2nr30819c
PubMed ID:
22751782
Type:
Article
ISSN:
20403364
Sponsors:
Financial support from the CSIR-Network projects NWP0022 and NWP-56 is greatly acknowledged. One of the authors, Priti A. Mangrulkar, would also take the opportunity to sincerely acknowledge the Council of Scientific and Industrial Research (CSIR) India for granting the Senior Research Fellowship. The authors would also like to thank Director, CSIR-NEERI for providing research facilities.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; KAUST Catalysis Center (KCC)

Full metadata record

DC FieldValue Language
dc.contributor.authorMangrulkar, Priti A.en
dc.contributor.authorPolshettiwar, Viveken
dc.contributor.authorLabhsetwar, Nitin K.en
dc.contributor.authorVarma, Rajender S.en
dc.contributor.authorRayalu, Sadhana Sureshen
dc.date.accessioned2015-08-03T09:36:13Zen
dc.date.available2015-08-03T09:36:13Zen
dc.date.issued2012en
dc.identifier.issn20403364en
dc.identifier.pmid22751782en
dc.identifier.doi10.1039/c2nr30819cen
dc.identifier.urihttp://hdl.handle.net/10754/562012en
dc.description.abstractIn the present investigation, hydrogen production via water splitting by nano-ferrites was studied using ethanol as the sacrificial donor and Pt as co-catalyst. Nano-ferrite is emerging as a promising photocatalyst with a hydrogen evolution rate of 8.275 μmol h -1 and a hydrogen yield of 8275 μmol h -1 g -1 under visible light compared to 0.0046 μmol h -1 for commercial iron oxide (tested under similar experimental conditions). Nano-ferrites were tested in three different photoreactor configurations. The rate of hydrogen evolution by nano-ferrite was significantly influenced by the photoreactor configuration. Altering the reactor configuration led to sevenfold (59.55 μmol h -1) increase in the hydrogen evolution rate. Nano-ferrites have shown remarkable stability in hydrogen production up to 30 h and the cumulative hydrogen evolution rate was observed to be 98.79 μmol h -1. The hydrogen yield was seen to be influenced by several factors like photocatalyst dose, illumination intensity, irradiation time, sacrificial donor and presence of co-catalyst. These were then investigated in detail. It was evident from the experimental data that nano-ferrites under optimized reaction conditions and photoreactor configuration could lead to remarkable hydrogen evolution activity under visible light. Temperature had a significant role in enhancing the hydrogen yield. © 2012 The Royal Society of Chemistry.en
dc.description.sponsorshipFinancial support from the CSIR-Network projects NWP0022 and NWP-56 is greatly acknowledged. One of the authors, Priti A. Mangrulkar, would also take the opportunity to sincerely acknowledge the Council of Scientific and Industrial Research (CSIR) India for granting the Senior Research Fellowship. The authors would also like to thank Director, CSIR-NEERI for providing research facilities.en
dc.publisherRoyal Society of Chemistryen
dc.titleNano-ferrites for water splitting: Unprecedented high photocatalytic hydrogen production under visible lighten
dc.typeArticleen
dc.contributor.departmentKAUST Catalysis Center (KCC)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalNanoscaleen
dc.contributor.institutionEnvironmental Materials Division, National Environmental Engineering Research Institute (CSIR-NEERI, Nehru Marg), Nagpur, Indiaen
dc.contributor.institutionSustainable Technology Division, NRMRL, U.S. Protection Agency, 26 W. Martin Luther King Dr., Cincinnati, OH, United Statesen
kaust.authorPolshettiwar, Viveken

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