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

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Title Nano-ferrites for water splitting: unprecedented high photocatalytic hydrogen
production under visible light
 
Creator Mangrulkar, Priti A
Polshettiwar, Vivek
Labhsetwar, Nitin
Varma, Rajender S
Rayalu, Sadhana
 
Subject Materials Science
 
Description 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 mmol h�1 and a hydrogen yield of 8275 mmol h�1
g�1 under visible light compared to 0.0046 mmol 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 mmol 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 mmol 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.
 
Publisher RSC
 
Date 2012
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/1067/1/mangrulkar2012%281%29.pdf
Mangrulkar, Priti A and Polshettiwar, Vivek and Labhsetwar, Nitin and Varma, Rajender S and Rayalu, Sadhana (2012) Nano-ferrites for water splitting: unprecedented high photocatalytic hydrogen production under visible light. Nanoscale, 4. pp. 5202-5209. ISSN 2040-3372
 
Relation http://www.rsc.org/journals-books-databases/about-journals/nanoscale/
http://neeri.csircentral.net/1067/