TY - JOUR
T1 - Fabrication of magnetically recoverable photocatalysts using g-C3N4 for effective separation of charge carriers through like-Z-scheme mechanism with Fe3O4 mediator
AU - Zhu, Zhi
AU - Huo, Pengwei
AU - Lu, Ziyang
AU - Yan, Yongsheng
AU - Liu, Zhi
AU - Shi, Weidong
AU - Li, Chunxiang
AU - Dong, Hongjun
N1 - Publisher Copyright:
© 2017
PY - 2018/1/1
Y1 - 2018/1/1
N2 - A novel efficient magnetic oxidation-reduction like-Z-scheme structure photocatalyst composed of g-C3N4, CdS and the oxidation-reduction mediators of Fe3O4 is successfully synthesized by heat treatment methods. The like-Z-scheme CdS/Fe3O4/g-C3N4 photocatalyst exhibits universal degradation property on removing kinds of antibiotics, and the photocatalytic activity is better than that of CdS/g-C3N4 and pure g-C3N4. The excellent photocatalytic performance is originated from the unique like-Z-scheme structure and oxidation–reduction function of Fe3O4, which effectively separates the hole-electron and sufficiently utilizes the photogenerated carriers for generating more active radicals. The results showed that when the content of Fe3O4 is 10%, the CdS/Fe3O4/g-C3N4 exhibited superior activity. The best degradation rate constant K in the like-Z-scheme photocatalyst is approximately 26 times of pure g-C3N4. The important role of Fe3O4 and the photocatalytic mechanism are also discussed in detail. This work not only puts forward a novel design idea of the like-Z-scheme material, but also is expected to be widely applied to the universal removal of kinds of antibiotics according to the practical requirement.
AB - A novel efficient magnetic oxidation-reduction like-Z-scheme structure photocatalyst composed of g-C3N4, CdS and the oxidation-reduction mediators of Fe3O4 is successfully synthesized by heat treatment methods. The like-Z-scheme CdS/Fe3O4/g-C3N4 photocatalyst exhibits universal degradation property on removing kinds of antibiotics, and the photocatalytic activity is better than that of CdS/g-C3N4 and pure g-C3N4. The excellent photocatalytic performance is originated from the unique like-Z-scheme structure and oxidation–reduction function of Fe3O4, which effectively separates the hole-electron and sufficiently utilizes the photogenerated carriers for generating more active radicals. The results showed that when the content of Fe3O4 is 10%, the CdS/Fe3O4/g-C3N4 exhibited superior activity. The best degradation rate constant K in the like-Z-scheme photocatalyst is approximately 26 times of pure g-C3N4. The important role of Fe3O4 and the photocatalytic mechanism are also discussed in detail. This work not only puts forward a novel design idea of the like-Z-scheme material, but also is expected to be widely applied to the universal removal of kinds of antibiotics according to the practical requirement.
KW - Antibiotics degradation
KW - CdS/FeO/g-CN
KW - Excellent photo-electron transfer ability
KW - Like-Z-scheme structure
KW - Universal photocatalytic performance
UR - http://www.scopus.com/inward/record.url?scp=85033680871&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2017.08.131
DO - 10.1016/j.cej.2017.08.131
M3 - 文章
AN - SCOPUS:85033680871
SN - 1385-8947
VL - 331
SP - 615
EP - 625
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
ER -