C3N4 shape–dependent antibacterial and corrosion resistance NiP–C3N4/CeO2 nanocomposite coatings
Source abstract
Abstract
Pipeline systems operate under severe conditions involving combined mechanical stresses and highly corrosive environments, which accelerate degradation. Conventional coatings often provide either high mechanical strength or superior corrosion resistance, but rarely a combination of both. Ni–P coatings are well known for their high hardness, good wear and corrosion resistance. In this work, newly synthesized g-C 3 N 4 nanofibers (C 3 N 4 /F) and nanotubes (C 3 N 4 /T), along with their CeO 2 -modified forms (g-C 3 N 4 /CeO 2 /F and g-C 3 N 4 /CeO 2 /T), were incorporated into Ni–P coatings via electroless deposition. The synergistic effect of incorporating both CeO 2 and C 3 N 4 in two distinct morphologies, on the mechanical, corrosion protection and antibacterial properties of the NiP coating was systematically investigated. The results showed that the NiP-C 3 N 4 /CeO 2 /T provided higher microhardness than NiP-C 3 N 4 /CeO 2 /F, and heat treatment further enhanced hardness of all nanocomposites coatings. The CeO 2 incorporation improved corrosion resistance, in saline environments, by five times in NiP-C 3 N 4 /F and by two times in NiP-C 3 N 4 /T compared to blank NiP configuration, while the tubular morphology gave an eight times improvement over its fibrous form. The tubular NiP-C 3 N 4 /CeO 2 coatings achieved the highest protection efficiency of 99.99% (as-plated) and 99.97% (heat-treated) owing to effective sealing of microdefects in the Ni–P matrix. Antibacterial assessments against S. aureus and E. coli confirmed improved activity in g-C 3 N 4 /CeO 2 -modified coatings compared to the blank NiP. Overall, tubular C 3 N 4 /CeO 2 nanocomposite showed a strong potential as reinforcement for enhancing the hardness, corrosion resistance, and antibacterial performance of NiP coatings.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Metal and Thin Film Mechanics · Diamond and Carbon-based Materials Research · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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