Journal article
Single Precursor-Derived Sub-1 nm MoCo Bimetallic Particles Decorated on Phosphide-Carbon Nitride Framework for Sustainable Hydrogen Generation
ACS Applied Materials and Interfaces, Vol.17(3), pp.4728-4743
2025
PMID: 39779368
Abstract
The strategic design and fabrication of efficient electrocatalysts are pivotal for advancing the field of electrochemical water splitting (EWS). To enhance EWS performance, integrating non-noble transition metal catalysts through a cooperative double metal incorporation strategy is important and offers a compelling alternative to conventional precious metal-based materials. This study introduces a novel, straightforward, single-step process for fabricating a bimetallic MoCo catalyst integrated within a three-dimensional (3D) nanoporous network of N, P-doped carbon nitride derived from a self-contained precursor. The subsequent carbonization at 550 °C yields a highly effective bimetallic phosphide carbon nitride electrocatalyst, denoted as MoCoPCN, tailored explicitly for EWS. The MoCoPCN electrocatalyst demonstrates exceptional electrocatalytic performance, with a low onset potential of 1.43 V and an overpotential value of 202 mV at a current density of 10 mA/cm2 for the oxygen evolution reaction (OER) and 49.5 mV for the hydrogen evolution reaction (HER), respectively. Moreover, the catalyst exhibits a high electrochemically active surface area of 2720 cm–2, a small Tafel slope of 47.5 mV dec–1 for HER and 45.7 mV dec–1 for the OER, and a low charge transfer resistance of 0.09 Ω for the HER and 0.805 Ω for the OER. The optimal catalyst was tested for overall water splitting performance in a 1 M KOH electrolyte, demonstrating excellent efficiency with a low cell voltage of 1.49 V required to achieve a current density of 10 mA/cm2. These outstanding characteristics, combined with the synergistic effects arising from the interaction between MoCo and P-g-C3N4 (PCN), underscore the potential of a bimetallic phosphide carbon nitride material as a highly promising electrocatalyst for efficient water splitting.
Details
- Title
- Single Precursor-Derived Sub-1 nm MoCo Bimetallic Particles Decorated on Phosphide-Carbon Nitride Framework for Sustainable Hydrogen Generation
- Authors
- Sadam Hussain - National University of Sciences and TechnologyManzar Sohail (Corresponding Author) - National University of Sciences and TechnologyNadia Shahzad - National University of Sciences and TechnologyGeoffrey Will - University of the Sunshine Coast, Queensland, School of Science, Technology and EngineeringAnthony P O'Mulane - Queensland University of TechnologyAhmed Abdala - Texas A&M University at QatarIbrahim A Alnaser - King Saud UniversityMohammad Rezaul Karim - King Saud UniversityMd Abdul Wahab (Corresponding Author) - Queensland University of Technology
- Publication details
- ACS Applied Materials and Interfaces, Vol.17(3), pp.4728-4743
- Publisher
- American Chemical Society
- Date published
- 2025
- DOI
- 10.1021/acsami.4c12577
- ISSN
- 1944-8252
- PMID
- 39779368
- Grant note
- The Higher Education Commission (HEC) of Pakistan supported this work through grant no. HEC-NRPU 15745.
- Organisation Unit
- School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 991092495302621
- Output Type
- Journal article
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- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
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