{"id":3069,"date":"2025-09-30T14:32:59","date_gmt":"2025-09-30T14:32:59","guid":{"rendered":"https:\/\/www2.unifap.br\/rsmatos\/?p=3069"},"modified":"2025-10-11T20:45:01","modified_gmt":"2025-10-11T20:45:01","slug":"gabriel-paixao-defends-his-final-undergraduate-work-on-green-nanocomposites","status":"publish","type":"post","link":"https:\/\/www2.unifap.br\/rsmatos\/gabriel-paixao-defends-his-final-undergraduate-work-on-green-nanocomposites\/","title":{"rendered":"Gabriel Paix\u00e3o Defends His Final Undergraduate Work on Green Nanocomposites"},"content":{"rendered":"

The Amazonian Materials Research Group proudly congratulates student Gabriel Paix\u00e3o Batista on the successful defense of his final undergraduate work, entitled \u201cEstudo das Propriedades F\u00edsicas de Nanocomp\u00f3sitos \u03b1\u2012Fe\u2082O\u2083\/Fe\u2083O\u2084 Obtidos em Meio Bioquelante<\/a>\u201d. This defense, held in september 26, 2025 at the Federal University of Amap\u00e1, represents a remarkable academic milestone for both the student and our research group.<\/p>\n

Under the supervision of Prof. Dr. Robert Saraiva Matos, Gabriel\u2019s research investigated the structural and magnetic properties of hematite (\u03b1-Fe\u2082O\u2083) and magnetite (Fe\u2083O\u2084) nanocomposites synthesized through a sustainable bio-assisted sol-gel route, using Maytenus rigida<\/em> Mart. extract as a natural biochelating agent. The study systematically explored how calcination temperatures (400\u2013600 \u00b0C) influence nanoparticle size, morphology, phase composition, and magnetism, employing advanced characterization techniques such as FTIR, Raman spectroscopy, TEM, and VSM.<\/p>\n

The results revealed that Maytenus rigida extract enabled an eco-friendly synthesis of nanocomposites with tunable properties. Particle sizes ranged from ~9 nm to over 130 nm depending on the calcination temperature, while magnetic hysteresis curves showed decreasing saturation magnetization but increasing coercivity, reflecting the evolving balance between \u03b1-Fe\u2082O\u2083 and Fe\u2083O\u2084 phases. These findings are of high relevance for applications in environmental remediation, particularly in contaminated water treatment and pollutant removal.<\/p>\n

Beyond the scientific contributions, this work exemplifies our group\u2019s dedication to training and empowering young researchers in the Amazon region. Gabriel\u2019s commitment to rigorous experimentation and his ability to connect sustainability with frontier materials science reflect the mission of the Amazonian Materials Research Group: to foster innovation, responsibility, and excellence in research that addresses both technological and socio-environmental challenges.<\/p>\n

We warmly congratulate Gabriel Paix\u00e3o Batista on this important academic achievement. His work enriches the ongoing research in our laboratories and serves as an inspiring reference for future students. The Amazonian Materials Research Group remains committed to guiding new generations of scientists devoted to sustainable innovation and the advancement of knowledge.<\/p>\n

Stay tuned for photo highlights from Gabriel Paix\u00e3o\u2019s undergraduate work defense.<\/p>\nngg_shortcode_0_placeholder\n","protected":false},"excerpt":{"rendered":"

The Amazonian Materials Research Group proudly congratulates student Gabriel Paix\u00e3o Batista on the successful defense of his final undergraduate work, entitled \u201cEstudo das Propriedades F\u00edsicas de Nanocomp\u00f3sitos \u03b1\u2012Fe\u2082O\u2083\/Fe\u2083O\u2084 Obtidos em Meio Bioquelante\u201d. This defense, held in september 26, 2025 at the Federal University of Amap\u00e1, represents a remarkable academic milestone… Continue reading → <\/span><\/a><\/p>\n","protected":false},"author":344,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"ngg_post_thumbnail":0,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-3069","post","type-post","status-publish","format-standard","hentry","category-pesquisa"],"_links":{"self":[{"href":"https:\/\/www2.unifap.br\/rsmatos\/wp-json\/wp\/v2\/posts\/3069","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www2.unifap.br\/rsmatos\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www2.unifap.br\/rsmatos\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www2.unifap.br\/rsmatos\/wp-json\/wp\/v2\/users\/344"}],"replies":[{"embeddable":true,"href":"https:\/\/www2.unifap.br\/rsmatos\/wp-json\/wp\/v2\/comments?post=3069"}],"version-history":[{"count":4,"href":"https:\/\/www2.unifap.br\/rsmatos\/wp-json\/wp\/v2\/posts\/3069\/revisions"}],"predecessor-version":[{"id":3087,"href":"https:\/\/www2.unifap.br\/rsmatos\/wp-json\/wp\/v2\/posts\/3069\/revisions\/3087"}],"wp:attachment":[{"href":"https:\/\/www2.unifap.br\/rsmatos\/wp-json\/wp\/v2\/media?parent=3069"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www2.unifap.br\/rsmatos\/wp-json\/wp\/v2\/categories?post=3069"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www2.unifap.br\/rsmatos\/wp-json\/wp\/v2\/tags?post=3069"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}