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Preparation of carbon/graphite carbon nitride composites and their methylene blue removal performance
Received date: 2022-05-10
Online published: 2023-03-17
To improve the performance of graphite-phase carbon nitride（g-C3N4） for methylene blue removal，glucose was used as carbon source，ammonium acetate was added as structural director，carbon/graphite-phase carbon nitride composites were prepared by hydrothermal method.Moreover，fourier transform infrared spectroscopy（FT-IR），X-ray diffraction（XRD） and scanning electron microscopy（SEM） were used to characterize the structure，composition，morphological characteristics and photocatalytic performance of the obtained composites.In addition，methylene blue was taken as the target pollutant.The effects of different factors on removal rate were investigated by orthogonal experiment L9（34）.The results showed that when the conditions were as follows:the light time of 20 h，pH value of 7.00，dosage of carbon/graphite carbon nitride composite of 0.15 g，the mass ratio of carbon to g-C3N4 of 5∶10，the removal rate reached 95.46 %.After five cycles，it could still reach 88.17 %.Carbon doping g-C3N4 improved the methylene blue removal performance of graphite phase carbon nitride，which would provide reference for future research on printing and dyeing wastewater.
Key words： hydrothermal method; g-C3N4; orthogonal experiment; photocatalysis; methylene blue
CHEN Zhangxu , FU Minglian , ZHU Danchen , ZHENG Bingyun . Preparation of carbon/graphite carbon nitride composites and their methylene blue removal performance[J]. Inorganic Chemicals Industry, 2023 , 55(3) : 134 -139 . DOI: 10.19964/j.issn.1006-4990.2022-0283
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