Preparation of silver nanoparticles/polydopamine functionalized polyacrylonitrile fiber paper and its catalytic activity for the reduction 4-nitrophenol
Preparation of silver nanoparticles/polydopamine functionalized polyacrylonitrile fiber paper and its catalytic activity for the reduction 4-nitrophenol
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DOI：
10.1016/j.apsusc.2017.03.120
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发表时间：
2017-07-31
影响因子：
6.7
通讯作者：
Boukherroub, Rabah
中科院分区：
文献类型：
--
作者：
Lu, Shixiang;Yu, Jianying;Boukherroub, Rabah
本文报道了以聚多巴胺（PD）和银纳米粒子（Ag NPs）为功能化的聚丙烯腈纤维纸（PANFP）的制备，命名为Ag NPs/PD/PANFP。复合材料是通过一个简单的两步化学过程得到的。首先，在室温下浸泡在碱性多巴胺（pH 8.5）水溶液中，在PANFP表面涂上一层薄的聚多巴胺层。进一步利用聚多巴胺的还原特性制备Ag NPs。利用扫描电镜（SEM）、x射线衍射图（XRD）和x射线光电子能谱（XPS）对复合材料的形貌和化学成分进行了表征。研究了纳米复合材料在室温下用硼氢化钠（NaBH4）还原4-硝基苯酚的催化活性。Ag NPs/PD/PANFP具有良好的催化性能，可在30 min内将4-硝基苯酚完全还原为相应的4-氨基苯酚。此外，复合材料在4次循环中表现出良好的稳定性，而催化活性没有明显损失。(C) 2017 Elsevier B.V.版权所有
The study reports on the preparation of polyacrylonitrile fiber paper (PANFP) functionalized with polydopamine (PD) and silver nanoparticles (Ag NPs), named as Ag NPs/PD/PANFP. The composite material was obtained via a simple two-step chemical process. First, a thin polydopamine layer was coated onto the PANFP surface through immersion into an alkaline dopamine (pH 8.5) aqueous solution at room temperature. The reductive properties of polydopamine were further exploited for the deposition of Ag NPs. The morphology and chemical composition of the composite material were characterized using scanning electron microscopy (SEM), X-ray diffraction pattern (XRD) and X-ray photoelectron spectroscopy (XPS). The catalytic activity of the nanocomposite was evaluated for the reduction of 4-nitrophenol using sodium borohydride (NaBH4) at room temperature. The Ag NPs/PD/PANFP displayed good catalytic performance with a full reduction of 4-nitrophenol into the corresponding 4-aminophenol within 30 min. Moreover, the composite material exhibited a good stability up to 4 cycles without a significant loss of its catalytic activity. (C) 2017 Elsevier B.V. All rights reserved.