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In-situ Cl− ions formation during photocatalytic reaction of platinized nanocomposite for hydrogen generation

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Title In-situ Cl− ions formation during photocatalytic reaction of platinized nanocomposite for hydrogen generation
 
Creator Chilkalwara, Anushree A.
Mangrulkara, Priti A.
Moinuddina, Afsha Anjum
Penumakaa, Nagababu
Rayalua, Sadhana S.
 
Subject Materials Science
 
Description Platinised Titania is emerging as a promising catalyst for its chemical stability, large surface area, and good
electronic charge transfer. It is one of the most efficient materials and has been studied over past few decades for
photocatalytic hydrogen generation. Photodeposition of Pt nanoparticles on TiO2 surface enhances trapping of
photoexcited electrons and restricts recombination process. In this article we explored the influence of chloride
ion formed during in-situ photocatalytic process, on photocatalytic hydrogen generation by scavenging holes.
Illumination under UV–Visible light (400 nm < λ < 700 nm) improves interband excitation and transfer of
photogenerated electron to the conduction band of TiO2. Transmission electron microscopy (TEM) results reveal
average particle size of Pt nanoparticle in the range of 10 nm with uniform distribution on TiO2 surface. In-situ
photodeposition of Pt nanoparticle on TiO2 resulted in incredibly active photocatalyst for hydrogen generation
due to in-situ generated Cl− ions. Also, to one of the highest reported (6.72%). The hydrogen evolution rate of
17 mmol h−1 with apparent quantum yield (AQE). The AQE significantly higher than that for catalyst under
solar AM (1.5 G) illumination (0.04%).
 
Publisher Elsevier
 
Date 2018-11-01
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/1143/1/1-s2.0-S0038092X18309320-main.pdf
Chilkalwara, Anushree A. and Mangrulkara, Priti A. and Moinuddina, Afsha Anjum and Penumakaa, Nagababu and Rayalua, Sadhana S. (2018) In-situ Cl− ions formation during photocatalytic reaction of platinized nanocomposite for hydrogen generation. Solar Energy, 174. pp. 1019-1025. ISSN 0038-092X
 
Relation http://neeri.csircentral.net/1143/