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Detection of nanoplastics through low-cost SERS substrates, based on 3D islands of aggregated gold nanoparticles on aluminum foil, for wide ranging applications
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Researchers developed a low-cost surface-enhanced Raman spectroscopy (SERS) substrate by combining aluminium foil with 3D aggregates of gold nanoparticles stabilised by cucurbit[5]uril, enabling sensitive nanoplastic detection through plasmonic coupling. The substrate achieved trace-level analyte detection and offers a practical, scalable approach for nanoplastic identification across a wide range of environmental and analytical applications.
Surface enhanced Raman spectroscopy (SERS) is a powerful analytical technique that can detect trace quantities of analyte. However, fabricating cost–effective and homogeneous SERS substrates for diverse applications remains a significant challenge. Herein, a simple bottom-up technique is reported for developing a unique SERS substrate by exploiting the plasmonic coupling of low-cost aluminium foil (ALF) and 3-dimensional (3D) gold nanoparticle aggregates induced by cucurbit[5]uril (CB[5]) .
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