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Cotton fabric has been processed into hierarchically porous carbon with a two-step chemical-free method, i.e. carbonization in nitrogen and controlled thermal oxidation in air. By optimizing thermal oxidation temperature, large surface area of 777 m2/g could be achieved in cotton fabric derived carbon. The processed carbon remained the micron-meter tubular structure (same as cotton fiber), while meso-/micro-pores...
We herein report the synthesis of heteroatoms doped, high surface area microporous activated carbons (AC) by utilisation of Coca Cola® as a potential source of waste biomass, for applications as CO2 adsorbent and electrodes of supercapacitors. N, S dual doped carbon spheres are firstly obtained by hydrothermal treatment of Coca Cola® and then thermally activated by either KOH or ZnCl2. The resulting...
A meticulous solid state chemistry approach has been developed for the synthesis of carbon anode from a sustainable source. The reaction mechanism of carbon formation during pyrolysis of sustainable feed-stock was studied in situ by employing Raman microspectroscopy. No Raman spectral changes observed below 160 °C (thermally stable precursor) followed by color change, however above 280 °C characteristic...
High-performance bifunctional electrocatalysts based on nickel/nickel oxide nanoparticles and nitrogen-doped activated carbon, derived from biomass waste (cauliflower leaves) were synthesized by a facile one-step process. The Ni and NiO compositions were controlled by varying the temperature during pyrolysis, which had significant effects on the crystallographic structure of the resulting hybrid and...
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