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

PDF - Published Version Restricted to Registered users only Download (540Kb) | Request a copy

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 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.

Item Type:	Article
Subjects:	Materials Science
Divisions:	UNSPECIFIED
Depositing User:	Dr. Nitin Labhasetwar
Date Deposited:	11 Jan 2018 04:25
Last Modified:	11 Jan 2018 04:25
URI:	http://neeri.csircentral.net/id/eprint/1067

Actions (login required)

View Item