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离子纤维素稳定的金纳米颗粒及其在4-硝基苯酚催化还原中的应用。

Ionic cellulose-stabilized gold nanoparticles and their application in the catalytic reduction of 4-nitrophenol.

作者信息

Hwang J, Siddique A B, Kim Y J, Lee H, Maeng J H, Ahn Y, Lee J S, Kim H S, Lee H

机构信息

Department of Chemistry and Research Institute of Basic Sciences, Kyung Hee University 26 Kyungheedaero Dongdaemun-gu Seoul 02447 Republic of Korea

Clean Energy Center, Korea Institute of Science and Technology 5 Hwarang-ro 14-gil Sungbuk-gu Seoul 02792 Republic of Korea

出版信息

RSC Adv. 2018 Jan 8;8(4):1758-1763. doi: 10.1039/c7ra11393e. eCollection 2018 Jan 5.

DOI:10.1039/c7ra11393e
PMID:35542619
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9077261/
Abstract

A novel strategy for the synthesis of highly stable gold nanoparticles (GNPs) was designed by reducing HAuCl with NaBH in an aqueous solution of water-soluble ionic cellulose composed of dimethylimidazolium cations and phosphite-bound cellulose anions. NMR and UV-Vis analysis along with the measurement of the zeta potential suggest that the exceptionally high stability of GNPs originates from the strong interaction of GNPs with the phosphite groups of the ionic cellulose. The thus prepared GNPs exhibit excellent catalytic activity for the reduction of 4-nitrophenol to 4-aminophenol, a model hydrogenation reaction.

摘要

通过在由二甲基咪唑阳离子和亚磷酸酯键合的纤维素阴离子组成的水溶性离子纤维素水溶液中用硼氢化钠还原氯金酸，设计了一种合成高稳定性金纳米颗粒（GNP）的新策略。核磁共振（NMR）和紫外可见（UV-Vis）分析以及zeta电位测量表明，GNP异常高的稳定性源于GNP与离子纤维素亚磷酸酯基团的强相互作用。如此制备的GNP对将4-硝基苯酚还原为4-氨基苯酚（一种典型的氢化反应）表现出优异的催化活性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc05/9077261/510c3708f4f9/c7ra11393e-f6.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc05/9077261/54b57da7ce10/c7ra11393e-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc05/9077261/fb61ee970159/c7ra11393e-f1.jpg
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