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Study on effect of heating rate on structure-activity of g-C3N4 photocatalyst by pyrolysis of urea
Received date: 2021-05-11
Online published: 2022-04-18
High value added downstream products graphitic carbon nitride（g-C3N4） can be prepared by pyrolysis of urea,but its photocatalytic performance is significantly affected by pyrolysis conditions.Industrial grade urea was used as precursor,the effect of heating rate on the structure and photocatalytic performance of g-C3N4 was investigated,and g-C3N4 was used for photocatalytic oxidation degradation of organic dyes and photocatalytic reduction to produce H2O2.The results showed that g-C3N4（GCN-15） with rapid heating rate（15 °C/min） had high crystallinity,less amorphous structure,more complete conjugated structure and narrow band gap,which was beneficial to the transfer of photogenerated electrons and the improvement of photocatalytic performance.The photodegradation rates of RhB and MB by GCN-15 were 4 and 2 times higher than those by GCN-2,respectively,and the yield of H2O2 produced in 8 hours was increased by 18.37%.
Wenbo YANG , Pan WU , Jian HE , Changjun LIU , Wei JIANG . Study on effect of heating rate on structure-activity of g-C3N4 photocatalyst by pyrolysis of urea[J]. Inorganic Chemicals Industry, 2022 , 54(4) : 169 -174 . DOI: 10.19964/j.issn.1006-4990.2021-0310
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