In-situ preparation of size-tunable gold nanoparticles in porous resorcinol–formaldehyde resin

In-situ preparation of size-tunable gold nanoparticles in porous resorcinol–formaldehyde resin
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多孔间苯二酚-甲醛树脂中原位制备尺寸可调的金纳米颗粒

DOI:
10.1016/j.colsurfa.2015.08.008
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发表时间:
2015-11
期刊:
Colloids and Surfaces A: Physicochemical and Engineering Aspects
影响因子:
--
通讯作者:
Yang Wensheng
Yang Wensheng
中科院分区:
其他
文献类型:
--
作者:
Guo Zilong;Huang Zhenzhen;Zhuang Jiaqi;Yang Wensheng

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在这项工作中,多孔间苯二酚-甲醛树脂(RF)颗粒被用作载体,通过将RF直接浸入四氯金酸(HAuCl4)溶液中,原位制备金纳米颗粒(NP)。通过简单地调节反应溶液的 pH 值,Au NP 可以沉积在 RF 颗粒表面或 RF 颗粒内部。结果表明,RF载体中含有的酚羟基可以充当配体和还原剂,促进Au NPs的形成。通过改变 HAuCl4 的浓度,沉积在 RF 颗粒内的 Au NP 的尺寸可在 3.7–14.0 nm 范围内调节。经鉴定,RF 中负载的 Au NPs 具有最佳尺寸,在催化 NaBH4 还原 4-硝基苯胺时表现出平衡的活性和稳定性。
In this work, porous resorcinol–formaldehyde resin (RF) particles were used as support for in-situ preparation of Au nanoparticles (NPs) by directly immersing the RF into the solution of tetrachloroauric acid (HAuCl4). The Au NPs can be deposited on the RF particle surface or inside the RF particles by simply mediating pH of the reaction solutions. It was revealed that the phenolic hydroxyl groups contained in the RF support can act as both ligand and reductant to promote the formation of the Au NPs. Size of the Au NPs deposited inside the RF particles was tunable in the range of 3.7–14.0 nm by changing the concentration of HAuCl4. The Au NPs loaded in RF with optimal size were identified to show balanced activity and stability in catalyzing the reduction of 4-nitroaniline by NaBH4.
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