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提出利用生物模拟化学原位合成纳米颗粒的方法。利用马脾铁蛋白作为限制性反应器控制金属Co离子水解、氧化还原等反应组装成单分散的CoO纳米粒子。在碱性条件下脱铁铁蛋白限制性合成磁性CoO纳米颗粒,通过透射电子显微镜(TEM)和元素分析(EDX)对产品的结构和组成分析表征,颗粒尺寸在3～8nm范围。此外,采用紫外、可见吸收光谱分析对蛋白组装过程进行了实验研究。对基于生物矿化的纳米材料形成机理进行了讨论。
In this paper, we propose a method for the in-situ synthesis of nanoparticles using biomimetic chemistry. The use of horse spleen ferritin as a limiting reactor to control the hydrolysis of metal Co ions, redox reaction assembled into monodisperse CoO nanoparticles. Under alkaline conditions, apo-ferritin was used to limit the synthesis of magnetic CoO nanoparticles. The structure and composition of the products were characterized by transmission electron microscopy (TEM) and elemental analysis (EDX). The particle size ranged from 3 to 8 nm. In addition, the protein assembly process was investigated experimentally by UV and visible absorption spectroscopy. The formation mechanism of biomineralized nanomaterials is discussed.