Preparation of spindle-shaped polyaniline supported Au catalysts with enhanced catalytic reduction of 4-nitrophenol
Preparation of spindle-shaped polyaniline supported Au catalysts with enhanced catalytic reduction of 4-nitrophenol
复制标题
纺锤形聚苯胺负载Au催化剂的制备及其增强催化还原4-硝基苯酚
DOI：
10.1007/s00396-019-04480-y
复制
发表时间：
2019
影响因子：
2.4
通讯作者：
Qi Caixia
中科院分区：
文献类型：
--
作者：
Sun Libo;Peng Shuang;Jiang Lin;Zheng Yuhua;Sun Xun;Su Huijuan;Qi Caixia
本文制备了几种纺锤形聚苯胺（PANI）/Au催化剂，并评价了以NaBH4为还原剂将4-硝基苯酚（4-NP）还原为4-氨基苯酚（4-AP）的性能。纺锤形PANI载体是通过简单的界面聚合方法直接合成的，无需使用任何模板。以聚乙烯醇（PVA）为保护剂，NaBH4为还原剂，通过金溶胶法制备了窄粒径分布（2~6 nm）的金胶体纳米颗粒（NPs）。 Au胶体纳米颗粒通过吸附作用沉积在PANI载体上。这些制备好的 PANI/Au 催化剂通过 TEM、FT-IR、XPS 和 EDX 进行了彻底表征。以NaBH4还原4-NP作为模型反应来评价催化剂的催化性能。结果表明，所制备的催化剂对 4-NP 还原为 4-AP 具有增强的催化性能。图形摘要
Herein, several spindle-shaped polyaniline (PANI)/Au catalysts were prepared and evaluated in the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) with NaBH4as the reducing agent. The spindle-shaped PANI support was directly synthesized via a facile interfacial polymerization method without using any templates. Au colloid nanoparticles (NPs) with a narrow size distribution (2~6 nm) were prepared via an Au sol method using polyvinyl alcohol (PVA) as a protecting agent and NaBH4as a reducing agent. The Au colloid NPs were deposited on the PANI support through an adsorption effect. These as-prepared PANI/Au catalysts were thoroughly characterized by TEM, FT-IR, XPS, and EDX. The reduction of 4-NP by NaBH4was used as a model reaction to evaluate the catalytic properties of the catalysts. Results showed that the as-prepared catalysts presented enhanced catalytic properties for the reduction of 4-NP to 4-AP.Graphical abstract