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Boosting borohydride hydrolysis for H2 generation by MOF-templated void-engineered shaggy cobalt oxide: Abundant oxygen vacancy-mediated enhancement

  • Duong Dinh Tuan
  • , Huu Tap Van
  • , Dang Thi Thai Ha
  • , Jet Chau Wen
  • , Eilhann Kwon
  • , Suresh Ghotekar
  • , Bui Xuan Thanh
  • , Jechan Lee
  • , Yiu Fai Tsang
  • , Kun Yi Andrew Lin
  • Thai Nguyen University
  • National Yunlin University of Science and Technology
  • Hanyang University
  • Chettinad Academy of Research & Education
  • Faculty of Materials Technology, National Key Lab. of Polymer and Composite Materials, HoChiMinh University of Technology
  • Vietnam National University Ho Chi Minh City
  • The Education University of Hong Kong
  • National Chung Hsing University
  • National Tsing Hua University

Research output: Contribution to journalArticlepeer-review

Abstract

Designing an advantageous catalyst for enhancing the release of hydrogen (H2) from NaBH4 hydrolysis is still desirable. Herein, a void-engineered shaggy cobalt oxide (VSCO) is constructed via facile carving and calcination using the cuboid cobalt-based metal organic framework (Co-MOF) as a template. The as-prepared VSCO shows unique structural properties, such as large internal void, high specific surface area, and abundant oxygen vacancy, enabling VSCO to boost H2 production from NaBH4 hydrolysis. VSCO also exhibits an activation energy (Ea) of 28.9 kJ mol−1, which is much lower than that of commercial Co3O4 NP (62.9 kJ mol−1) and most of recent reported noble metals. VSCO also retains its outstanding catalytic activity over multiple cycles. This work sheds a light into the new approach of constructing metal oxide material with the void structure and abundant oxygen vacancies for catalyzing the hydrolysis of NaBH4.

Original languageEnglish
Pages (from-to)39944-39953
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume48
Issue number100
DOIs
StatePublished - 30 Dec 2023

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Cobalt oxide
  • H
  • Hydrolysis
  • NaBH
  • Oxygen vacancy

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