• English
    • العربية
  • العربية
  • Login
  • QU
  • QU Library
  •  Home
  • Communities & Collections
  • About QSpace
    • Vision & Mission
  • Help
    • Item Submission
    • Publisher policies
    • User guides
      • QSpace Browsing
      • QSpace Searching (Simple & Advanced Search)
      • QSpace Item Submission
      • QSpace Glossary
View Item 
  •   Qatar University Digital Hub
  • Qatar University Institutional Repository
  • Academic
  • Research Units
  • Center for Advanced Materials
  • Center for Advanced Materials Research
  • View Item
  • Qatar University Digital Hub
  • Qatar University Institutional Repository
  • Academic
  • Research Units
  • Center for Advanced Materials
  • Center for Advanced Materials Research
  • View Item
  •      
  •  
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Scalable nitrogen-enriched porous sub-100 nm graphitic carbon nanocapsules for efficient oxygen reduction reaction in different media

    Thumbnail
    View/Open
    d3gc01790g.pdf (3.160Mb)
    Date
    2023
    Author
    Eid, Kamel A.M.
    Abdelhafiz, Ali Ahmed
    Abdel-Azeim, Safwat
    Varma, Rajender S.
    Shibl, Mohamed F.
    Metadata
    Show full item record
    Abstract
    The oxygen reduction reaction (ORR) is deemed a sustainable energy source; however, developing green, earth-abundant, and efficient noble-metal-free catalysts for efficient ORR in different media remains a grand challenge. Herein, we present a scalable, facile, environmentally benign, and one-pot strategy for the fabrication of eco-friendly nitrogen-enriched graphitic-like hierarchical porous sub-100 nm carbon (denoted as N-HMPC) nanocapsules with controllable N-content for ORR. The synthesis route is based on in situ organic-organic self-assembly of Pluronic F127 copolymer micelles and resorcinol-melamine-formaldehyde in the presence of a silica template followed by carbonization and eroding the silica core. The as-formed N-HMPC nanocapsules have a core-shell morphology (?84 nm), hierarchical porosity, high surface area of (790 m2 g-1), and tunable nitrogen content (9-25%). Intriguingly, N-HMPC nanocapsules exhibit an analogous ORR activity to the commercial Pt/C catalyst (20% Pt) in the alkaline and acidic electrolytes, besides superior durability and inimitable tolerance to methanol and CO poisonings due to the hollow core-shell architecture and abundant nitrogen. A judicious combination of experimental and density functional theory (DFT) simulations delineated the ORR pathway and mechanism for N-HMPC in acidic and alkaline electrolytes. The presented approach may open new avenues for the rational design of metal-free green electrocatalysts for ORR.
    DOI/handle
    http://dx.doi.org/10.1039/d3gc01790g
    http://hdl.handle.net/10576/67826
    Collections
    • Center for Advanced Materials Research [‎1633‎ items ]
    • Center for Sustainable Development Research [‎359‎ items ]

    entitlement


    Qatar University Digital Hub is a digital collection operated and maintained by the Qatar University Library and supported by the ITS department

    Contact Us
    Contact Us | QU

     

     

    Home

    Submit your QU affiliated work

    Browse

    All of Digital Hub
      Communities & Collections Publication Date Author Title Subject Type Language Publisher
    This Collection
      Publication Date Author Title Subject Type Language Publisher

    My Account

    Login

    Statistics

    View Usage Statistics

    About QSpace

    Vision & Mission

    Help

    Item Submission Publisher policies

    Qatar University Digital Hub is a digital collection operated and maintained by the Qatar University Library and supported by the ITS department

    Contact Us
    Contact Us | QU

     

     

    Video