Girivyankatesh Hippargi, Girivyankatesh Hippargi and Mangrulkar, Priti and Chilkalwar, Anushree and Labhsetwar, Nitin and Rayalu, Sadhana (2018) Chloride ion: A promising hole scavenger for photocatalytic hydrogen generation. International Journal of Hydrogen Energy, 43. pp. 6815-6823. ISSN 0360-3199 (In Press)

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The investigation pertains to elucidation of promising role of in-situ chloride ions generated during the photoreduction of HAuCl4 as an internal sacrificial donor for photocatalytic hydrogen generation. The hydrogen evolution rate (HER) observed was 4.16 mmol h�1 using in-situ route of photocatalyst formation which is significantly higher than the conventional route of formation of recovered photocatalyst. This unreported and unprecedented enhancement is explained on the basis of role of chloride ions released from the gold precursor. Experimental data inferring the effect of chloride ions on photocatalytic hydrogen generation using AueTiO2 are also briefly explained. The role of anionic sacrificial donors suggests several potential possibilities for their applications in photocatalysis considering their presence in wastewater as well as their low cost and abundant availability. The work also introduces one-step photodeposition and hydrogen generation process against traditional recovered photocatalyst, wherein the catalysts were prepared first by normal route of photodeposition, recovered and then employed for hydrogen generation.

Item Type: Article
Uncontrolled Keywords: Photocatalysis; Chloride Effect; Donor; Water Splitting; In-situ
Subjects: Waste Utilization
Chemistry, Chemical Technology
Energy Sources
Water Treatment
Materials Science
Date Deposited: 07 May 2018 09:42
Last Modified: 07 May 2018 09:42

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