TY - JOUR
T1 - Surface modified Bi2SiO5 microflowers with Fe3+ doping for efficient degradation of organic contaminants
AU - Luo, Jiaying
AU - Zhao, Jianquan
AU - Xie, Yiwen
AU - Lu, Rui
AU - Shang, Tian
AU - Xu, Yang
AU - Jiang, Dongmei
AU - Zhan, Qingfeng
N1 - Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/12/10
Y1 - 2022/12/10
N2 - In this paper, a novel surface-doped Fe-Bi2SiO5 photocatalyst was synthesized by the oil bath method for the first time. Compared with the pure Bi2SiO5, the degradation rate constants of the FB-2 (the mole ratio of Fe/Bi was 1.7%) were increased by 3.8 and 5 times for Ciprofloxacin (CIP) and Rhodamine B (RhB), respectively. In addition, the results of the total organic carbon (TOC) test manifested that the mineralization capacity of FB-2 for CIP and RhB were increased to 40.7% and 64.7%, respectively. Moreover, the effects of catalyst dosage, initial solution concentration, initial pH and inorganic anions on photocatalytic performance were studied. The cyclic degradation experiments of FB-2 verified the excellent stability of photocatalysts, while active species trapping experiments and electron spin resonance (ESR) tests showed that superoxide radicals and holes played a major role in the degradation process. The paper presented that the photocatalytic activity of Bi-based photocatalysts was improved by a surface modified method, which provided a new idea for further study.
AB - In this paper, a novel surface-doped Fe-Bi2SiO5 photocatalyst was synthesized by the oil bath method for the first time. Compared with the pure Bi2SiO5, the degradation rate constants of the FB-2 (the mole ratio of Fe/Bi was 1.7%) were increased by 3.8 and 5 times for Ciprofloxacin (CIP) and Rhodamine B (RhB), respectively. In addition, the results of the total organic carbon (TOC) test manifested that the mineralization capacity of FB-2 for CIP and RhB were increased to 40.7% and 64.7%, respectively. Moreover, the effects of catalyst dosage, initial solution concentration, initial pH and inorganic anions on photocatalytic performance were studied. The cyclic degradation experiments of FB-2 verified the excellent stability of photocatalysts, while active species trapping experiments and electron spin resonance (ESR) tests showed that superoxide radicals and holes played a major role in the degradation process. The paper presented that the photocatalytic activity of Bi-based photocatalysts was improved by a surface modified method, which provided a new idea for further study.
KW - Fe-surface-doped BiSiO
KW - Photocatalytic mechanism
KW - Simulated sunlight driven
KW - Surface modification
UR - https://www.scopus.com/pages/publications/85136459675
U2 - 10.1016/j.jallcom.2022.166866
DO - 10.1016/j.jallcom.2022.166866
M3 - 文章
AN - SCOPUS:85136459675
SN - 0925-8388
VL - 926
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
M1 - 166866
ER -