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首页> 外文期刊>Journal of nanomaterials >Modified Natural Rubber Induced Aqueous to Toluene Phase Transfer of Gold and Platinum Colloids
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Modified Natural Rubber Induced Aqueous to Toluene Phase Transfer of Gold and Platinum Colloids

机译：改性天然橡胶诱导金和铂胶体的水相至甲苯相转移

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Citrate-stabilized gold and platinum particles were prepared in aqueous phase and transferred to toluene phase by employing 2-propanol as the transfer agent. It was found that the modified natural rubber (ENR) induced the phase transfer and assisted the dispersion of the citrate-free metal particles into the organic phase. The amounts of gold and platinum transferred are 93.4% and 86.1%, respectively. This phase transfer technique produced organosols of smaller particle sizes and narrower size distribution with self-assembly arrangements when compared to those prepared via the previous in situ preparations. The respective average particle size and standard deviation of gold before and after phase transfer were6.3±1.7 nm and7.2±1.3 nm, while for platinum they were4.0±0.7 nm and4.2±0.8 nm. The slight increase in the average sizes and overall size distributions in both metals after transfer was attributed to multiparticle aggregation in the organic phase.
机译：在水相中制备柠檬酸盐稳定的金和铂颗粒，并通过使用2-丙醇作为转移剂转移至甲苯相。发现改性天然橡胶（ENR）引起相转移并帮助无柠檬酸盐的金属颗粒分散到有机相中。金和铂的转移量分别为93.4％和86.1％。与通过先前的原位制备方法制备的有机溶胶相比，这种相转移技术可产生具有自组装排列的较小粒度和较窄粒度分布的有机溶胶。金在相转移前后的平均粒径和标准偏差分别为6.3±1.7 nm和7.2±1.3 nm，而铂为4.0±0.7 nm和4.2±0.8 nm。转移后两种金属的平均尺寸和总体尺寸分布的轻微增加归因于有机相中的多颗粒聚集。

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