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Porous heterostructure of h-BN/carbon as an efficient electrocatalyst for hydrogen peroxide generation

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2024, 34(6), pp.1629-1637
  • DOI : 10.1007/s42823-024-00718-0
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : January 3, 2024
  • Accepted : March 9, 2024
  • Published : July 1, 2024

Xu Xiang 1 Zhao Yuying 2 Yuan Qixin 1 Wu Yuhan 1 He Jiawei 1 Fan Mengmeng 1

1College of Chemical Engineering, Nanjing Forestry University
2Key Lab of Biomass Energy and Material, Jiangsu Province, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry

Accredited

ABSTRACT

We successfully synthesized a porous carbon material with abundant hexagonal boron nitride (h-BN) dispersed on a carbon matrix (p-BN-C) as efficient electrocatalysts for two-electron oxygen reduction reaction (2e− ORR) to produce hydrogen peroxide (H2O2). This catalyst was fabricated via ball-milling-assisted h-BN exfoliation and subsequent growth of carbon structure. In alkaline solutions, the h-BN/carbon heterostructure exhibited superior electrocatalytic activity for H2O2 generation measured by a rotating ring-disk electrode (RRDE), with a remarkable selectivity of up to 90–97% in the potential range of 0.3–0.6 V vs reversible hydrogen electrode (RHE), superior to most of the reported carbon-based electrocatalysts. Density functional theory (DFT) simulations indicated that the B atoms at the h-BN heterostructure interface were crucial active sites. These results underscore the remarkable catalytic activity of heterostructure and provide a novel approach for tailoring carbon-based catalysts, enhancing the selectivity and activity in the production of H2O2 through heterostructure engineering.

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