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- Title
Morphological attributes and electrochemical performance of Cu/Co/Ni metal-organic framework-based carbon nanomaterials.
- Authors
Sharma, Deepika; Kumar, Aman; Satapathy, Bhabani K.
- Abstract
The study reports the synthesis of conductive MOFs (Metal-organic frameworks) of the type NBu4M(DHBQ)1.5 (M = Ni2+, Cu2+, and Co2+; DHBQ = 2,5- dihydroxy-1,4-benzoquinone) and their subsequent incorporation in PVP-based electrospun mats (EMs). The MOFs and MOF-modified EMs were carbonized to fabricate nanostructured metal oxide/carbon nanomaterial (MO/CNM). The synthesized and carbonized MOFs (MO/CNMs) and MOF-modified PVP EMs (MO/CNM EMs) were subjected to morphological, microstructural, and electrochemical characterization. Morphological analysis indicated a more uniform dispersion of networked nanomaterial on carbonization of MO/CNM EMs than MO/CNMs. Microstructural analysis revealed the successful formation of MOFs using metallic salts and DHBQ and the subsequent incorporation of MOFs in PVP-based EMs. Raman spectra and energy-dispersive X-ray spectra (EDX) also indicated the presence of corresponding metal oxide in the respective MO/CNMs and MO/CNM EMs. However, MOF-Cu-loaded PVP-based EMs could not be fabricated due to the limited dispersion of whisker-like Cu-MOF in PVP-based precursor solution resulting in repeated needle clogging. The uniaxial tensile strength of PVP-based EMs was observed to deteriorate with MOF loading, however, MOF-Ni exhibited comparatively higher elongation-at-break (~ 12%) than PVP-based EMs. Further, electrochemical characterization indicated MOF-Ni and MOF-Ni EM-based electrodes to exhibit comparatively better electrochemical performance than respective MOF-Co and MOF-Cu-based electrodes. Therefore, the study demonstrates the synthesis and development of uniformly dispersed metal oxide-based carbon nanomaterial using PVP-based EMs for designing engineered nanostructured materials for targeted drug delivery, sensor, and energy storage applications.
- Subjects
TARGETED drug delivery; X-ray spectra; NANOSTRUCTURED materials; RAMAN spectroscopy; METAL-organic frameworks; COPPER
- Publication
Journal of Applied Electrochemistry, 2024, Vol 54, Issue 8, p1759
- ISSN
0021-891X
- Publication type
Article
- DOI
10.1007/s10800-024-02071-6