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SÃntese ecológica assistida por micro-ondas de nanopartÃculas de metais nobres
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ISBN10: 6209525946
ISBN13: 9786209525940
Publisher: Edicoes Nosso Conhecimento
Published: Jan 30 2026
Pages: 116
Weight: 0.36
Height: 0.28 Width: 6.00 Depth: 9.00
Language: Portuguese
ISBN13: 9786209525940
Publisher: Edicoes Nosso Conhecimento
Published: Jan 30 2026
Pages: 116
Weight: 0.36
Height: 0.28 Width: 6.00 Depth: 9.00
Language: Portuguese
As nanopartÃculas de metais nobres têm umarelação superfÃcie-volume muitoelevada e uma grande estabilidade dos átomos nas suas superfÃcies e são conhecidas por apresentarem um elevado desempenho catalÃtico numa variedade de transformações quÃmicas preparativas. Estas propriedades emergentes têm potencial para grandes impactos nos domÃnios da ótica, eletrónica, mecânica, biomédica, catálise e outros . As metodologias sintéticas tradicionais para a produção de nanopartÃculas de metais nobres envolvem vários métodos fÃsicos ou quÃmicos com a ajuda de agentes redutores e estabilizadores tóxicos e perigosos . O método de sÃntese verde assistido por micro-ondas poupa energia e é amigo do ambiente, porque as reacções ocorrem em condições de sistema isolado fechado . No presente estudo, as nanopartÃculas de metais nobres, ou seja, Pd, Ag, Pt e Au, foram sintetizadas utilizando gomas como a goma de guar, a goma de neem, a goma de acácia e a goma ghatti num forno de micro-ondas.
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