article · ACS Applied Nano Materials
Transition-metal-based nanozymes show great potential for chemiluminescence (CL) detection due to their stability, excellent catalytic properties, good biocompatibility, and facile synthesis. In this study, bimetallic CoMoO4 nanorods with high peroxidase activity were synthesized using a hydrothermal method, followed by calcination treatment. The as-synthesized CoMoO4 nanorods were utilized as catalysts for CL for the first time. They enhance the CL intensity of the luminol/hydrogen peroxide system by nearly 750-fold. Furthermore, a sensitive and rapid platform for dopamine detection was established based on the quenching effect of dopamine on the CL signal of this system. The proposed CL method for dopamine exhibited a linear range of 10–500 nM and a detection limit of 1.98 nM. Moreover, dopamine in serum samples was successfully measured using a standard addition method, showing a satisfactory recovery of 97.2–104.3%. This work provides robust support for the development of efficient and sensitive platforms for CL detection.
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DOI: 10.1021/acsanm.3c05309
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