MOF-Derived hierarchical porous 3D ZnO/Ag nanostructure as a reproducible SERS substrate for ultrasensitive detection of multiple environmental pollutants

A novel multifunctional SERS microfluidic sensor based on ZnO/Ag nanoflower arrays for label-free ultrasensitive detection of bacteria

“…These results indicate that the prepared ZnO/Ag microuidic SERS sensor holds promising potential for quantitative analysis, implying that this substrate system can be used to determine probe molecules at different concentrations precisely, providing a powerful tool for scientic research and practical applications. 48 To assess the SERS performance repeatability of the ZnO/ Ag microuidic SERS sensor, 40 different positions on the same substrate are randomly for Raman spectra acquisition for R6G, malachite green, chlorpyrifos, cyhalothrin, and thiabendazole. Specic Raman characteristic peaks are compared, and results are shown in Fig.…”

Recent Progress in the Application of Metal Organic Frameworks in Surface-Enhanced Raman Scattering Detection

“…Finally, the selfassembly of MOFs and noble metal nanoparticles can lead to the orderly assembly of the two materials, resulting in new nanomaterials with superior performance and promising applications. [45][46][47]. (D-F) SERS substrate with gold nanoparticles as core and MOF as shell [48][49][50].…”

“…Jing et al [33] synthesized silver nanoparticles (AgNPs) in situ on the surface of a metal-organic skeleton MIL-101 (Fe) for the first time. The SERS substrate prepared combines many Raman [45][46][47]. (D-F) SERS substrate with gold nanoparticles as core and MOF as shell [48][49][50].…”

“…The SERS substrate prepared combines many Raman hotspots between high-density AgNPs and the excellent adsorption performance of MOF, which can effectively concentrate the analyte in the Raman hotspots between adjacent Ag NPs, making it an excellent SERS substrate for high-sensitivity detection. Su et al [ 45 ] prepared a 3D ZnO/Ag substrate using ZnO nanoparticles (NPs) derived from porous zeolite imidazole skeleton (ZIF-8) and then evaporated to induce the self-assembly of AgNPs on it. This substrate can detect a variety of environmental pollutants through simple and effective methods ( Figure 1 A).…”

“… ( A – C ) SERS substrate synthesized by inducing precious metal nanoparticles to fabricate in the MOF internal and external surfaces [ 45 , 46 , 47 ]. ( D – F ) SERS substrate with gold nanoparticles as core and MOF as shell [ 48 , 49 , 50 ].…”