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Study on the Treatment of AOX by Carbon Doped Carbon Nitride for Photocatalytic Activation of Persulfate
Received:April 04, 2023  
DOI：10.11980/j.issn.0254-508X.2023.05.016
Key Words:persulfate  graphitic carbon nitride  4-chlorophenol  wastewater treatment
Fund Project:国家重点研发计划课题（2022YFC2105505）。
Author NameAffiliationPostcode
GUO Jinge* College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuangzu Autonomous Region， 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuangzu Autonomous Region， 530004 		530004
QIN Chengrong College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuangzu Autonomous Region， 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuangzu Autonomous Region， 530004 		530004
ZHANG Jian College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuangzu Autonomous Region， 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuangzu Autonomous Region， 530004 		530004
ZHOU Jinghong College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuangzu Autonomous Region， 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuangzu Autonomous Region， 530004 		530004
LIU Xinliang College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuangzu Autonomous Region， 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuangzu Autonomous Region， 530004 		530004
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Abstract:C-doped graphite phase carbon nitride catalyst （Glucose-g-C3N4） was prepared by one-step co-pyrolysis with glucose and melamine as raw materials. The light absorption properties and electron-hole pair separation ability of Glucose-g-C3N4 were analyzed by UV-vis diffuse reflectance spectroscopy （DRS） and fluorescence spectroscopy （PL）. Glucose-g-C3N4 was used for the photocatalytic treatment of 4-chlorophenol （4-CP） that was a model of Adsorbable Organic Halide’s analog （AOX）. The results showed that the visible light absorption performance of Glucose-g-C3N4 was enhanced and the electron-hole pair complexation rate was reduced. After reaction for 120 min under simulated sunlight irradiation， with persulfate （PDS） dosage of 0.5 mmol/L， Glucose-g-C3N4 dosage of 0.5 g/L， and 4-CP concentration of 10 mg/L， Glucose-g-C3N4 showed the best photocatalytic activity， and the degradation rate of 4-CP could reach 87.2% and the removal rate of total organic carbon （TOC） reached 86.2%. The photocatalytic activity of Glucose-g-C3N4 was enhanced because the doping of C atom broadened the light absorption range，and reduced the band gap， increased the electron transfer rate， promoting the activation of PDS.
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