A “green” synthesis alternative for Au nanoparticles (NPs) is reported using an aqueous media, environmental friendly reducing agents and the replacement of alkytrimethylammonium halides by biocompatibles molecules. The usage of an extract from the alga Egregia sp. intrinsically provides with biomolecules for the shell formation around the Au NPs to aid for their biocompatibility. The detailed analysis presented here allows to elucidate the double role played by the algae extract as the reducing agent and as the stabilizing capping shell for the Au NPs colloid. The optimized parameters to obtain a narrow size distribution of Au NPs are elucidated.

中文翻译：

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海藻提取物辅助的金纳米颗粒合成：采用绿色化学方法的生物分子壳

据报道，使用水性介质，环境友好的还原剂和生物相容性分子替代烷基三甲基卤化铵，可以制成金纳米颗粒（NPs）的“绿色”合成替代品。藻类Egregia sp的提取物的使用。内在地为金纳米颗粒周围的壳形成提供了生物分子，以帮助其生物相容性。此处提供的详细分析可以阐明藻类提取物作为Au NPs胶体的还原剂和稳定帽壳所起的双重作用。阐明了获得窄尺寸的Au NPs分布的优化参数。