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Fabrication of 2D ordered mesoporous carbon nitride and its use as electrochemical sensing platform for H2O2, nitrobenzene, and NADH detection

Zhang, Yufan, Bo, Xiangjie, Nsabimana, Anaclet, Luhana, Charles, Wang, Guang, Wang, Huan, Li, Mian, Guo, Liping
Biosensors & bioelectronics 2014 v.53 pp. 250-256
Fourier transform infrared spectroscopy, NAD (coenzyme), X-ray diffraction, X-ray photoelectron spectroscopy, adsorption, biosensors, carbon nitride, composite materials, electrochemistry, hydrogen peroxide, melamine, porous media, pyrolysis, scanning electron microscopy, silica, surface area, temperature, transmission electron microscopy
Two-dimensional ordered mesoporous carbon nitride (OMCN) has been successfully prepared for the first time using SBA-15 mesoporous silica and melamine as template and precursor respectively, by a nano hard-templating approach. A series of OMCN-x samples with different pyrolysis temperatures have been reported. The formation of these composite materials was verified by detailed characterization (e.g., Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, N2 adsorption, X-ray diffraction, scanning electron microscopy, and transmission electron microscopy). The results showed that the materials were structurally well ordered with two-dimensional porous structure, high surface area and large pore volume. The influence of BET surface area and different amounts of N-bonding configurations formed at different pyrolysis temperatures of OMCN-x for the electrocatalysis towards hydrogen peroxide, nitrobenzene, and nicotinamide adenine dinucleotide were investigated in detail. Results indicated that OMCN treated at 800°C with largest BET surface area and highest amounts of pyrindinic N showed improved electrocatalytic activity for H2O2, nitrobenzene, and NADH in neutral solution.