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An amperometric nonenzymatic dopamine sensor has been developed. Cobalt oxide (Co3O4) nanoparticles were uniformly dispersed inside mesoporous SiO2/C. A sol-gel process was used for the preparation of this mesoporous composite material (SiO2/C). This mesoporous composite has a pore size of around 13–14 nm, a large surface area (SBET 421 m2·g−1) and large pore volume (0.98 cm3·g−1) as determined by...
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