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Sadhukhan R, Kumar A, Prasanna PK, Guha A, Arenal R, Chakraborty S, Narayanan TN. Ultra-Low-Loaded Platinum Bonded Hexagonal Boron Nitride as Stable Electrocatalyst for Hydrogen Generation. ACS Appl Mater Interfaces 2024; 16:8627-8638. [PMID: 38345507 DOI: 10.1021/acsami.3c15296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Chemical stability of hexagonal boron nitride (hBN) ultrathin layers in harsh electrolytes and the availability of nitrogen site in hBN to stabilize metals like Pt are used here to develop a high intrinsic activity hydrogen evolution reaction (HER) catalyst having low loaded Pt (5 weight% or <1 atomic%). A catalyst having a nonzero oxidation state for Pt (with a Pt-N bonding) is shown to be HER active even with low catalyst loadings (0.114 mgcm-2). Electronic modification of the shear exfoliated hBN sheets is achieved by Au nanoparticle-based surface decoration (hBN_Au), and further anchoring with Pt develops a catalyst (hBN_Au_Pt) with high turnover frequency for HER (∼15). The hBN_Au_Pt is shown to be a highly durable catalyst even after the accelerated durability test for 10000 cycles and temperature annealing at 100 °C. Density functional theory based calculations gave insights in to the electronic modifications of hBN with Au and the catalytic activity of the hBN_Au_Pt system, in line with the experimental studies, indicating the demonstration of a new class of catalyst system devoid of issues such as carbon corrosion and Pt leaching.
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Affiliation(s)
- Rayantan Sadhukhan
- Tata Institute of Fundamental Research Hyderabad, Sy No. 36/P Serilingampally Mandal, Hyderabad 500046, India
| | - Amar Kumar
- Tata Institute of Fundamental Research Hyderabad, Sy No. 36/P Serilingampally Mandal, Hyderabad 500046, India
| | - Ponnappa K Prasanna
- Materials Theory for Energy Scavenging (MATES) Lab, Harish-Chandra Research Institute (HRI) Allahabad, A C.I. of Homi Bhabha National Institute, Chhatnag Road, Jhunsi, Prayagraj (Allahabad) 211019, India
| | - Anku Guha
- Tata Institute of Fundamental Research Hyderabad, Sy No. 36/P Serilingampally Mandal, Hyderabad 500046, India
- The Institute of Photonic Sciences (ICFO), Barcelona, 08860 Spain
| | - Raul Arenal
- Instituto de Nanociencia y Materiales de Aragon (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Laboratorio de Microscopias Avanzadas (LMA), Universidad de Zaragoza, 50018 Zaragoza, Spain
- Fundación ARAID, 50018 Zaragoza, Spain
| | - Sudip Chakraborty
- Materials Theory for Energy Scavenging (MATES) Lab, Harish-Chandra Research Institute (HRI) Allahabad, A C.I. of Homi Bhabha National Institute, Chhatnag Road, Jhunsi, Prayagraj (Allahabad) 211019, India
| | - Tharangattu N Narayanan
- Tata Institute of Fundamental Research Hyderabad, Sy No. 36/P Serilingampally Mandal, Hyderabad 500046, India
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