Abstract
Nitrogen-doped porous carbon (NPC) materials were successfully synthesized via a Zn-containing metal-organic framework (Zn-MOF). The resulting NPC materials are characterized using various physicochemical techniques which indicated that the NPC materials obtained at different carbonization temperatures exhibited different properties. Pristine MOF morphology and pore size are retained after carbonization at particular temperatures (600 °C-NPC600 and 800 °C-NPC800). NPC800 material shows an excellent surface area 1192 m2/g, total pore volume 0.92 cm3/g and displays a higher CO2 uptake 4.71 mmol/g at 273 k and 1 bar. Furthermore, NPC600 material displays good electrochemical sensing towards H2O2. Under optimized conditions, our sensor exhibited a wide linearity range between 100 µM and 10 mM with a detection limit of 27.5 µM.
Highlights
Porous carbon materials have been regarded as significant porous materials because of their distinctive properties such as pore size, extraordinary surface area and good electrochemical activities [1,2,3]
Synthesized Zn-containing metal-organic framework (Zn-metal-organic framework (MOF)) structure and porous properties was checked by powder x-ray diffraction (PXRD), SEM and N2 gas sorption measurements (Figure 1a–d)
The pore size of Zn-MOF was calculated by the NLDFT method, it reveals two micropores (0.75 and 1.4 nm)
Summary
Porous carbon materials have been regarded as significant porous materials because of their distinctive properties such as pore size, extraordinary surface area and good electrochemical activities [1,2,3]. They have extensive applications in many fields including catalysis, biosensors, fuel cells and supercapacitors [4,5,6,7,8,9,10,11]. MOF-derived metal/metal oxide embedded porous carbon materials [29,30] are used in the electrodes for electrochemical sensors [31,32].
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