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  • Highly recyclable gold nanoparticle films on lithium-ion battery separator for efficient catalytic conversion: Insights from 2D correlation spectroscopy analysis
  • 来源:李运波副教授个人网站 2025-06-02
  • To develop highly recyclable and efficient catalytic materials is

    pivotal for sustainable treatment of wastewater. Herein, gold

    nanoparticle (AuNP) films immobilized on a lithium-ion battery separator

    were fabricated via a facile vacuum filtration method, demonstrating

    exceptional catalytic activity and recyclability for the conversion of

    nitrophenols and azo dyes. This porous separator architecture provided

    abundant anchoring sites for AuNPs, enabling rapid substrate diffusion

    and minimizing nanoparticle aggregation. Under optimized conditions

    (1000?mM NaBH?), the AuNP film achieved complete catalytic conversion of

    2-nitrophenol to 2-aminophenol within 36?min. Remarkably, the film

    retained >?98?% efficiency over 8 consecutive cycles, underscoring

    its robust reusability. Two-dimensional correlation spectroscopy

    (2D-COS) elucidated the reaction mechanism, revealing that

    nitrophenolate ions (415?nm) dominated the conversion kinetics, followed

    by the slower formation of aminophenol (295?nm). The AuNP film also

    exhibited versatility, converting 4-nitrophenol (32?min), methylene blue

    (8?min), and methyl orange (15?min) efficiently. The synergy between

    the separator’s hierarchical porosity and AuNP’s catalytic activity

    facilitated electron transfer and active hydrogen generation. This work

    presents a scalable, low-cost strategy for industrial pollutant

    remediation, leveraging recyclable AuNP films and advanced spectroscopic

    analysis to bridge material design and environmental application.

  • [来源:中国聚合物网]
  • 了解更多请进入: 李运波副教授个人网站
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