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PAN/PANI/rGO/Au复合纤维的制备及其催化、原位SERS监测性能研究
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1.郑州轻工业大学科学校区材料与化学工程学院;2.郑州轻工业大学材料与化学工程学院;3.郑州轻工业大学电气信息工程学院

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国家自然科学基金资助(项目号21671179和21904120); 河南省科技厅科技攻关计划项目(202102210045)


Synthesis of PAN/PANI/rGO/Au fibers and their catalytic, in situ SERS monitoring performance
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The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    摘要:

    负载型贵金属纳米催化剂是提高贵金属催化剂利用率,降低经济成本的一种有效途径,也是一种新型的有潜力的表面增强拉曼光谱(SERS)的基底材料。本文首先利用静电纺丝技术构建了还原的氧化石墨烯(rGO)增强的聚丙烯腈/聚苯胺复合纤维(PAN/PANI/rGO),然后采用原位还原的方法在其表面生长金纳米颗粒得到了PAN/PANI/rGO/Au复合纤维,通过SEM, FTIR, XRD, XPS, Raman和UV-Vis光谱等手段对复合纤维进行了结构和形貌表征,最后以NaBH4还原四硝基苯酚(4-NP)为模型,研究了复合纤维的催化性能和原位SERS检测该催化还原反应的过程,并将其与同种方法制备的PAN/PANI/GO/Au和PAN/PANI/Au复合纤维进行比较。结果表明,rGO增强的PAN/PANI/rGO/Au复合纤维具有优于PAN/PANI/GO/Au和PAN/PANI/Au复合纤维的催化活性、原位增强拉曼检测的能力和循环性能。

    Abstract:

    Supported noble metal nanocatalyst is an effective way to improve the utilization rate of precious metal catalyst for the economic cost reduction, and is also a new potential surfacing enhanced Raman spectroscopy (SERS) substrate material. In this paper, reduced graphene oxide (rGO) reinforced polyacrylonitrile/polyaniline fibers (PAN/PANI/rGO) were first fabricated by electrospinning technology. Au nanoparticles were then grown on the surface of as-prepared PAN/PANI/rGO fibers by in-situ reduction method. The structure and morphology of the final formed PAN/PANI/rGO/Au fibers were characterized by SEM, FTIR, XRD, XPS, Raman and UV-Vis spectroscopy. The catalytic reduction of 4-nitrophenol (4-NP) in the presence of NaBH4 in water was used to evaluate the catalytic and in-situ SERS detection properties of the synthesized PAN/PANI/rGO/Au fibers. Compared with PAN/PANI/ Au and PAN/PANI/GO/Au fibers, the results show that the prepared PAN/PANI/rGO/Au fibers has the best catalytic activity, in-situ SERS detection ability and cycle performance.

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陈凤华,石向东,梁娓娓,陈庆涛,姜利英,张永辉. PAN/PANI/rGO/Au复合纤维的制备及其催化、原位SERS监测性能研究[J].稀有金属材料与工程,2021,50(8):2957~2966.[chenfenghua, shixiangdong, liangweiwei, chenqingtao, jiangliying, zhangyonghui. Synthesis of PAN/PANI/rGO/Au fibers and their catalytic, in situ SERS monitoring performance[J]. Rare Metal Materials and Engineering,2021,50(8):2957~2966.]
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历史
  • 收稿日期:2020-09-10
  • 最后修改日期:2020-11-08
  • 录用日期:2020-11-26
  • 在线发布日期: 2021-09-07
  • 出版日期: 2021-08-31