Polyindole-Functionalized RGO-NiFe₂O₄-SiO₂ Nanocomposite: A Dual-Functional Nanomaterial for Efficient Antimony Adsorption and Subsequent Application in Supercapacitor.

IF 4.7 3区工程技术 Q1 POLYMER SCIENCE

Polymers Pub Date : 2024-10-31 DOI:10.3390/polym16213084

Mohd Shoeb, Fouzia Mashkoor, Mohmmad Naved Khan, Changyoon Jeong

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引用次数: 0

Abstract

Effective wastewater treatment remains a critical challenge, especially when dealing with hazardous pollutants like antimony (Sb(III)). This study addresses this issue by using innovative nanocomposites to remove Sb(III) ions from water, while simultaneously repurposing the spent adsorbents for energy storage applications. We developed reduced graphene oxide-NiFe₂O₃-SiO₂-polyindole nanocomposites (RGO-NiFe₂O₃-SiO₂-PIn NCs) via a hydrothermal synthesis method, achieving a high removal efficiency of 91.84% for Sb(III) ions at an initial concentration of 50 mg/L at pH 8. After adsorption, the exhausted adsorbent was repurposed for energy storage, effectively minimizing secondary pollution. The Sb(III)-loaded adsorbent (RGO-NiFe₂O₃-SiO₂-PIn@SbO_x) exhibited excellent performance as an energy storage material, with a specific capacitance (C_s) of 701.36 F/g at a current density of 2 A/g and a retention rate of 80.15% after 10,000 cycles. This dual-purpose approach not only advances wastewater treatment technologies but also contributes to sustainable and economical recycling practices, particularly in the field of energy storage.

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聚吲哚功能化 RGO-NiFe2O4-SiO2 纳米复合材料：高效吸附锑并将其应用于超级电容器的双功能纳米材料。

有效的废水处理仍然是一项严峻的挑战，尤其是在处理锑（Sb(III)）等有害污染物时。本研究利用创新型纳米复合材料去除水中的锑（III）离子，同时将废吸附剂重新用于储能应用，从而解决了这一问题。我们通过水热合成法研制了还原氧化石墨烯-NiFe2O3-SiO2-聚吲哚纳米复合材料（RGO-NiFe2O3-SiO2-PIn NCs），在 pH 值为 8、初始浓度为 50 mg/L 的条件下，对 Sb(III) 离子的去除率高达 91.84%。作为一种储能材料，Sb(III)吸附剂（RGO-NiFe2O3-SiO2-PIn@SbOx）表现出卓越的性能，在电流密度为 2 A/g 时，比电容（Cs）为 701.36 F/g，循环 10,000 次后，比电容保持率为 80.15%。这种两用方法不仅推动了废水处理技术的发展，还有助于可持续和经济的回收利用实践，尤其是在储能领域。

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来源期刊

Polymers POLYMER SCIENCE-

CiteScore

8.00

自引率

16.00%

发文量

4697

审稿时长

1.3 months

期刊介绍： Polymers (ISSN 2073-4360) is an international, open access journal of polymer science. It publishes research papers, short communications and review papers. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Polymers provides an interdisciplinary forum for publishing papers which advance the fields of (i) polymerization methods, (ii) theory, simulation, and modeling, (iii) understanding of new physical phenomena, (iv) advances in characterization techniques, and (v) harnessing of self-assembly and biological strategies for producing complex multifunctional structures.