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Abstract Porous g-C3N4 samples were obtained by simply calcining bulk g-C3N4 in static air in a muffle oven. The photocatalytic performance of these samples was evaluated through the removal of… Click to show full abstract
Abstract Porous g-C3N4 samples were obtained by simply calcining bulk g-C3N4 in static air in a muffle oven. The photocatalytic performance of these samples was evaluated through the removal of aqueous organic dyes (methylene blue and methyl orange) and tetracycline hydrochloride under visible-light irradiation (λ > 420 nm). Compared to bulk g-C3N4, porous g-C3N4 exhibited much better capability for removing these contaminants, especially under visible-light irradiation, due to the enlarged specific surface area and more efficient separation of photogenerated charge carries. In particular, porous g-C3N4 obtained by calcining bulk g-C3N4 in air at 525 °C showed the highest visible-light-driven catalytic activity among these samples. Superoxide radical anions (·O2−) were found to be the primary active species responsible for photodegradation.
Journal Title: Chinese Journal of Chemical Engineering
Year Published: 2017
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