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Innovative Carbonaceous Materials and Metal/Metal Oxide Nanoparticles for Electrochemical Biosensor Applications.
Nanomaterials (Basel)
November 2024
School of Chemical, Biological, and Battery Engineering, Gachon University, Gyeonggi-do, Seongnam-si 13120, Republic of Korea.
Electrochemical biosensors have emerged as predominant devices for sensitive, rapid, and specific sensing of biomolecules, with significant applications in clinical diagnostics, environmental observation, and food processing. The improvement of inventive materials, especially carbon-based materials, and metal/metal oxide nanoparticles (M/MONPs), has changed the impact of biosensing, improving the performance and flexibility of electrochemical biosensors. Carbon-based materials, such as graphene, carbon nanotubes, and carbon nanofibers, have excellent electrical conductivity, a high surface area, large pore size, and good biocompatibility, making them ideal electrocatalysts for biosensor applications.
View Article and Find Full Text PDFPolysulfide-mediating properties of nickel phosphide carbon composite nanofibers as free-standing interlayers for lithium-sulfur batteries.
RSC Adv
November 2024
National Laboratory Astana Kabanbay Batyr Ave. 53 Astana 010000 Kazakhstan
Issues such as the polysulfide shuttle effect and sulfur loss challenge the development of high-energy-density lithium-sulfur batteries. To address these limitations, a tailored approach is introduced using nickel phosphide carbon composite nanofibers (Ni P/C) with controlled surface oxidation layers. These nanofibers feature a hierarchical structure that leverages the benefits of nickel phosphide nanoparticles and a carbonaceous matrix to enable efficient sulfur encapsulation and suppress polysulfide diffusion.
View Article and Find Full Text PDFStudies on cytocompatibility of human dermal fibroblasts on carbon nanofiber nanoparticle-containing bioprinted constructs.
Discov Nano
September 2024
Institute of Nano-Bio Convergence, Pusan National University, Busan, 46241, Republic of Korea.
Article Synopsis
- Functional nanocomposite-based inks, incorporating carbon nanofibers (CNF NPs), enhance the strength, mechanical stability, and bioactivity of printed materials like methacrylated gelatin (GelMA).
- The study explored the impact of different concentrations of CNF NPs on cell proliferation by creating two types of constructs: cell-laden bioink and biomaterial ink, revealing improved mechanical properties but delayed cytotoxicity at higher concentrations.
- Results indicated that while CNF NPs didn't initially compromise cell viability, cytotoxic effects emerged after several days, highlighting the need for further research on functionalized CNF NPs to improve outcomes for skin tissue regeneration applications.
Vapor deposition strategy for implanting isolated Fe sites into papermaking nanofibers-derived N-doped carbon aerogels for liquid Electrolyte-/All-Solid-State Zn-Air batteries.
J Colloid Interface Sci
November 2024
Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China. Electronic address:
Single-atom catalysts (SACs), with precisely controlled metal atom distribution and adjustable coordination architecture, have gained intensive concerns as efficient oxygen reduction reaction (ORR) electrocatalysts in Zn-air batteries (ZAB). The attainment of a monodispersed state for metallic atoms anchored on the carbonaceous substrate remains the foremost research priority; however, the persistent challenges lie in the relatively weak metal-support interactions and the instability of captured single atom active sites. Furthermore, in order to achieve rapid transport of O and other reactive substances within the carbon matrix, manufacturing SACs based on multi-stage porous carbon substrates is highly anticipated.
View Article and Find Full Text PDFElectrochemical Detection of Cd, Pb, Cu and Hg with Sensors Based on Carbonaceous Nanomaterials and FeO Nanoparticles.
Nanomaterials (Basel)
April 2024
Department of Chemistry, Physics and Environment, Faculty of Sciences and Environment, "Dunărea de Jos" University of Galati, 47 Domneasca Street, 800008 Galați, Romania.
Two electrochemical sensors were developed in this study, with their preparations using two nanomaterials with remarkable properties, namely, carbon nanofibers (CNF) modified with FeO nanoparticles and multilayer carbon nanotubes (MWCNT) modified with FeO nanoparticles. The modified screen-printed electrodes (SPE) were thus named SPE/FeO-CNF and SPE/FeO-MWCNT and were used for the simultaneous detection of heavy metals (Cd, Pb, Cu and Hg). The sensors have been spectrometrically and electrochemically characterized.
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