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Photocatalysis Coupled with Persulfate Oxidation over Nitrogen Vacancies Modified g-C3N4/kaolinite Composite for Highly Efficient Removal of Bisphenol A
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Xiangwei ZHANG, Chunquan LI, Shuilin ZHENG, Zhiming SUN
Journal of the Chinese Ceramic Society | 2021, 49(7) : 1337 - 1346
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Journal of the Chinese Ceramic Society | 2021, 49(7): 1337-1346
• Special Issue on Mineral Material •
Photocatalysis Coupled with Persulfate Oxidation over Nitrogen Vacancies Modified g-C3N4/kaolinite Composite for Highly Efficient Removal of Bisphenol A
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Xiangwei ZHANG, Chunquan LI, Shuilin ZHENG, Zhiming SUN
Affiliations
  • School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China

    • ZHANG Xiangwei (1995-), male, Doctor candidate. E-mail:

About Author:

ZHANG Xiangwei (1995-), male, Doctor candidate. E-mail:

Published: 2021-07-20 doi: 10.14062/j.issn.0454-5648.20210096
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A new type of graphite carbon nitride (g-C3N4)/kaolinite composites with abundant nitrogen vacancies was prepared by using a facile thermal reduction method. The composites were characterized by using scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectrometer(FTIR), UV-Vis absorption spectroscopy and X-ray photoelectron spectrometry (XPS). Bisphenol A (BPA) was used as the target pollutant to evaluate the catalytic activity of the composites through photocatalysis coupled with persulfate oxidation. It was observed that the degradation rate of NGK-10:1 was 9.98 and 5.72 times higher than those of g-C3N4 and nitrogen vacancies modified g-C3N4, respectively. On one hand, the large specific surface area and high porosity provided with more reactive site and hence promoted the adsorption capacity of pollutants on the composites. On the other hand, the formation of nitrogen vacancies acted as the photo-generated electron trap centers and thus inhibited the recombination of electron-hole pairs. In addition, there would be more electrons to activate PMS, thus promoting the formation of SO4•- and ·OH. Quenching experimental results showed that the non-radical pathway played the major role in the removal of BPA.

kaolinite  /  photocatalysis  /  persulfate oxidation  /  graphite carbon nitride  /  bisphenol A
张祥伟, 李春全, 郑水林, 孙志明. 热还原法制备g-C3N4/高岭石复合材料及其光/过硫酸盐协同催化性能. 硅酸盐学报, 2021 , 49 (7) : 1337 -1346 . DOI: 10.14062/j.issn.0454-5648.20210096
Xiangwei ZHANG, Chunquan LI, Shuilin ZHENG, Zhiming SUN. Photocatalysis Coupled with Persulfate Oxidation over Nitrogen Vacancies Modified g-C3N4/kaolinite Composite for Highly Efficient Removal of Bisphenol A[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (7) : 1337 -1346 . DOI: 10.14062/j.issn.0454-5648.20210096
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Year 2021 volume 49 Issue 7
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Article Info
doi: 10.14062/j.issn.0454-5648.20210096
  • Receive Date：2021-01-31
  • Online Date：2026-10-30
  • Published：2021-07-20
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History
  • Received：2021-01-31
  • Revised：2021-02-25
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Affiliations
    School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China

Corresponding:

SUN Zhiming (1986-), male, Ph.D., Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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