Scholarlink

<p>Au as one of precious metals, is extensively used in industrial fields due to the beautiful color, high catalytic activity, strong coordination ability and stability. However, wastewater containing Au(III) is inevitably generated in the actual industrial application process, causing a series of environmental pollution problems and resources waste. In this work, hyperbranched polyethyleneimine modified polyacrylonitrile/graphene oxide electrospun nanocomposite fiber membrane (HPEI-PAN/GO) by electrospinning technology was employed to adsorb Au(III) in aqueous solution. The maximum adsorption capacity of the HPEI-PAN/GO for Au(III) was 369.02&#xa0;mg·g<sup>−1</sup>. Meanwhile, Au(III) was reduced to Au nanoparticles with an average size of 3.44&#xa0;nm during the adsorption process, which had dramatic catalytic reduction ability for toxic p-nitrophenol (4-NP) to an effective intermediate 4-aminophenol (4-AP). The catalytic conversion of the adsorption product (HPEI-PAN/GO-Au) for 4-NP to 4-AP was still higher than 90% after 10 cycles. This work provides a feasible strategy for the efficient recovery and reuse of precious metals in wastewater.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Catalytic Reduction of toxic P-nitrophenol by Hyperbranched Polyethyleneimine Modified Polyacrylonitrile/Graphene Oxide Electrospun Nanocomposite Fiber Membrane Adsorbed Au(III) from Aqueous Solution

  • 期刊论文

  • 发表日期：

    2025年12月12日

查看全文
  • Yingxia Ma,
  • Wenli Meng,
  • Xiaofeng Shi,
  • Haijun Yang,
  • Xiaohua Li,
  • Tianze Li

摘要

Au as one of precious metals, is extensively used in industrial fields due to the beautiful color, high catalytic activity, strong coordination ability and stability. However, wastewater containing Au(III) is inevitably generated in the actual industrial application process, causing a series of environmental pollution problems and resources waste. In this work, hyperbranched polyethyleneimine modified polyacrylonitrile/graphene oxide electrospun nanocomposite fiber membrane (HPEI-PAN/GO) by electrospinning technology was employed to adsorb Au(III) in aqueous solution. The maximum adsorption capacity of the HPEI-PAN/GO for Au(III) was 369.02 mg·g−1. Meanwhile, Au(III) was reduced to Au nanoparticles with an average size of 3.44 nm during the adsorption process, which had dramatic catalytic reduction ability for toxic p-nitrophenol (4-NP) to an effective intermediate 4-aminophenol (4-AP). The catalytic conversion of the adsorption product (HPEI-PAN/GO-Au) for 4-NP to 4-AP was still higher than 90% after 10 cycles. This work provides a feasible strategy for the efficient recovery and reuse of precious metals in wastewater.