TY - JOUR
T1 - Boosting photocatalytic degradation of antibiotic wastewater by synergy effect of heterojunction and phosphorus doping
AU - Zhou, Jie
AU - Ding, Jing
AU - Wan, Hui
AU - Guan, Guofeng
N1 - Publisher Copyright:
© 2020 Elsevier Inc.
PY - 2021/1/15
Y1 - 2021/1/15
N2 - Phosphorus-doped g-C3N4/ZnIn2S4 (PCN/ZIS) heterojunction photocatalysts were constructed by solvothermal method. The physical and chemical properties were investigated with X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV–vis diffuse reflectance spectroscopy (DRS), etc. The degradation of antibiotic wastewater was used to investigate the photocatalytic activities of composites under visible-light irradiation. The 10% PCN/ZIS had the best photocatalytic degradation performance for tetracycline with a photodegradation rate of 0.0874 min−1, which is respectively about 2.9 and 52.0 times than that of pure ZIS and PCN. Meanwhile, it was concluded that the holes and ⋅O2– (superoxide radicals) play dominant roles in the photocatalytic reactions through radicals trapping experiments, while ⋅OH (hydroxyl radicals) has a negative effect. In addition, 10%PCN/ZIS, with excellent stability and recyclability, also exhibited high photocatalytic activity for terramycin, chlortetracycline and ofloxacin. Overall, with the enhanced photocatalytic performance, PCN/ZIS could be potentially applied for photocatalytic degradation of antibiotic wastewater.
AB - Phosphorus-doped g-C3N4/ZnIn2S4 (PCN/ZIS) heterojunction photocatalysts were constructed by solvothermal method. The physical and chemical properties were investigated with X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV–vis diffuse reflectance spectroscopy (DRS), etc. The degradation of antibiotic wastewater was used to investigate the photocatalytic activities of composites under visible-light irradiation. The 10% PCN/ZIS had the best photocatalytic degradation performance for tetracycline with a photodegradation rate of 0.0874 min−1, which is respectively about 2.9 and 52.0 times than that of pure ZIS and PCN. Meanwhile, it was concluded that the holes and ⋅O2– (superoxide radicals) play dominant roles in the photocatalytic reactions through radicals trapping experiments, while ⋅OH (hydroxyl radicals) has a negative effect. In addition, 10%PCN/ZIS, with excellent stability and recyclability, also exhibited high photocatalytic activity for terramycin, chlortetracycline and ofloxacin. Overall, with the enhanced photocatalytic performance, PCN/ZIS could be potentially applied for photocatalytic degradation of antibiotic wastewater.
KW - Antibiotic wastewater
KW - Heterojunction
KW - P-doped g-CN
KW - Photocatalytic mechanism
KW - ZnInS nanoflower
UR - http://www.scopus.com/inward/record.url?scp=85090551961&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2020.08.099
DO - 10.1016/j.jcis.2020.08.099
M3 - 文章
C2 - 32927176
AN - SCOPUS:85090551961
SN - 0021-9797
VL - 582
SP - 961
EP - 968
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
ER -