ItemArticle

Cobalt-Based ZIF-67 Metal Organic Framework for Enhanced Photoelectrochemical Performance

Title
Cobalt-Based ZIF-67 Metal Organic Framework for Enhanced Photoelectrochemical Performance
Creator
Jayakrishnan, A.; Sijo, A.K.; Kumar Ranjan, Rohit; Venkatesan, Prashanth; Doong, Ruey-an; Thomas, Sabu
Description
This investigation explores the efficacy of Zeolitic Imidazolate Framework-67 (ZIF-67), a cobalt-centric metal-organic framework, in photoelectrocatalytic hydrogen generation. A comprehensive analysis of ZIF-67's structural, morphological, and photoelectrochemical attributes is conducted using techniques such as scanning electron microscopy (SEM), x-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area analysis, and ultraviolet-visible (UVvis) absorption spectroscopy. The photoelectrochemical performance of ZIF-67 is evaluated on various substrates, including UV-ozone treated fluorine-doped tin oxide (FTO) substrates and carbon paper. This study demonstrates enhanced photoelectrocatalytic performance from ZIF-67 through strategic substrate engineering. UV-ozone treated FTO/ZIF-67 achieves -138A/cm2(five times improvement vs untreated FTO), while ZIF-67/carbon black delivers -390A/cm2 (4 times higher than literature ZIF-67/BiVO4 composites). Comprehensive analysis (SEM, XRD, BET: 1416m2/g, UVvis: 2.03eV bandgap) reveals how surface hydrophilicity and conductive additives enhance charge transfer, validated by EIS, and chronoamperometry. These findings establish substrate optimization as a powerful strategy for advancing MOF-based photoelectrocatalytic hydrogen production. 2026 Wiley-VCH GmbH.
Source
ChemistrySelect;Volume;11;Issue;5;Article No.;e06958;
Date
01-01-2026
Publisher
John Wiley and Sons Inc
Subject
cobalt-based catalyst; hydrogen production; metal organic framework; photoelectrocatalysis; photoelectrochemical properties; water splitting; zif-67
Coverage
Jayakrishnan A., Department of Physics, School of Pure & Applied Physics, Kannur University, Kannur, India; Sijo A.K., Department of Physics, Mary Matha Arts and Science College, Mananthavady, Kerala, Kannur University, India; Kumar Ranjan R., Institute of Analytical and Environmental Sciences, National Tsing Hua University (NTHU), Hsinchu City, Taiwan; Venkatesan P., Institute of Analytical and Environmental Sciences, National Tsing Hua University (NTHU), Hsinchu City, Taiwan; Doong R.-A., Institute of Analytical and Environmental Sciences, National Tsing Hua University (NTHU), Hsinchu City, Taiwan; Thomas S., School of Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam, India, Department of Physics & Electronics, Christ University, Bangalore, India
Rights
All Open Access; Bronze Open Access
Relation
ISSN: 23656549;
Format
online
Language
English
Type
Article

Citation

Jayakrishnan, A.; Sijo, A.K.; Kumar Ranjan, Rohit; Venkatesan, Prashanth; Doong, Ruey-an; Thomas, Sabu, “Cobalt-Based ZIF-67 Metal Organic Framework for Enhanced Photoelectrochemical Performance,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 21, 2026, https://archives.christuniversity.in/items/show/21821.

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