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Johnnys da Silva Hortêncio

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Open access Aug 2026

Sustainable Synthesis of Defect-Rich NiO Nanoparticles from Seaweed for Enhanced Oxygen Evolution

Green synthesis has emerged as a sustainable alternative for preparing nanostructured electrocatalysts using renewable biological resources. In this work, NiO nanoparticles were synthesized using an ethanolic extract of Sargassum sp. as a biogenic mediator, and the influence of calcination temperature (300, 500, and 70...

Adiel Soares Ferreira, Johnnys da Silva Hortêncio, A. L. Menezes de Oliveira et al. · 1 citation

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