By controlling CVD reaction conditions at 800-850 °C, mesoporous graphene-oxide nanoparticles (MGNs) have been synthesized with tunable carbon contents (1-6 wt.%), extended surface area (SBET &gt; 900 m2/g), pore volume (~1.3 cm3/g) and wide-range distributions (0.4-2 nm, 4-6 nm) in both micropores and mesopores. Additionally, semiconducting behaviors of MGNs introduces electrochemical sensing possibility for detection of dopamine (DA) as an important biomarker platform. In this study, carbon-based mesoporous materials examined by Raman, XPS, PL, HRTEM, XRD, BET and CV demonstrates detection ability of biomarkers to 10-8 M. In combination of screen printed carbon electrode (SPCE) technique, trace amounts of DA can be electrochemically detected by MGNs in practical applications.

Screen printed mesoporous carbon electrodes for efficient sensing of dopamine

2019 Fall National Meeting

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