Recyclable adsorption removal and fluorescent monitoring of hexavalent chromium by electrospun nanofibers membrane derived from Tb3+ coordinating polyarylene ether amidoxime

Qimeng Ran; Danlei Zhao; Yao Ji; Zilin Fan; Guo Lin; Xiaobo Liu; Kun Jia

doi:10.1016/j.talanta.2023.125058

Recyclable adsorption removal and fluorescent monitoring of hexavalent chromium by electrospun nanofibers membrane derived from Tb³⁺ coordinating polyarylene ether amidoxime

Talanta. 2024 Jan 1;266(Pt 2):125058. doi: 10.1016/j.talanta.2023.125058. Epub 2023 Aug 7.

Authors

Qimeng Ran¹, Danlei Zhao², Yao Ji¹, Zilin Fan¹, Guo Lin¹, Xiaobo Liu³, Kun Jia⁴

Affiliations

¹ School of Materials and Energy, University of Electronic Science and Technology of China, 610054, Chengdu, China.
² College of Quality and Technical Supervision, Hebei University, Baoding, 071002, China.
³ School of Materials and Energy, University of Electronic Science and Technology of China, 610054, Chengdu, China; Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials, Chengdu, China.
⁴ School of Materials and Energy, University of Electronic Science and Technology of China, 610054, Chengdu, China; Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials, Chengdu, China. Electronic address: jiakun@uestc.edu.cn.

PMID: 37572474
DOI: 10.1016/j.talanta.2023.125058

Abstract

Emerging technologies or advanced materials which can simultaneously adsorb and detect highly toxic Cr(VI) are urgently in demand for environmental remediation. Herein, we have designed and synthesized a functional polyarylene ether with aromatic main chain and pendent carboxyl groups along with amidoxime group that can be coordinated with different metal ions. Thanks to its versatile activation of the lanthanide ions' inherent fluorescence and good processability, the fluorescent nanofiber membranes with competitive Cr(VI) adsorption and detection performance have been fabricated via one-step electrospinning of mixed solution containing synthesized polymer and terbium salt. More specifically, the optimized nanofiber membrane exhibits a maximal Cr(VI) adsorption of 278.2 mg/g and specific detection for hexavalent chromium down to 11.76 nM. More importantly, the prepared fluorescent nanofiber membranes can be easily re-generated and re-used for both Cr(VI) adsorption and detection for five times. Given the unique advantages of easy fabrication, competitive dual functionalities as well as good reusability of electrospun fluorescent nanofiber membranes, the present work basically opens up new insight in the design of multifunctional recyclable material for the remediation of heavy metal pollution.

Keywords: Cr(VI) adsorption; Electrospun nanofibers membranes; Fluorescent detection; Lanthanide ions; Polyarylene ether amidoxime.