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(a) CV plots of the modification of AuNPs on the SPCE; (b) SEM image of the AuNP-modified SPCE; (c) EIS spectrum of (a) SPCE, (b) AuNPs/SPCE, and (c,d) NOR-MIP/AuNPs/SPCE before and after removing NOR; and (d) Raman spectrum of the fabricated sensors.
