TY - JOUR
T1 - Photocatalytic removal using g-C 3 N 4 quantum dots/Bi 2 Ti 2 O 7 composites
AU - Wang, Tao
AU - Liu, Xiqing
AU - Men, Qiuyue
AU - Ma, Wei
AU - Liu, Zhi
AU - Liu, Yang
AU - Ma, Changchang
AU - Huo, Pengwei
AU - Yan, Yongsheng
N1 - Publisher Copyright:
© 2019
PY - 2019/4/15
Y1 - 2019/4/15
N2 - In this work, a simple method to load of g-C 3 N 4 quantum dots (CN QDs) onto Bi 2 Ti 2 O 7 (BTO) microsphere with the amount of CN QDs (3, 7, 10 and 15%). The photocatalyst was used for the treatment of water pollutants under visible-light illumination, which proved that CNBTO composites showed improved photocatalytic activity matched up to pure BTO. Reformation of BTO with CN QDs enhanced the light assimilation capacity, and promoted the isolation of photo-induced electron-hole pairs. The trapping experiments and ESR were announced the holes (h + ) and superoxide oxide (O 2 [rad] − ) played the key role, and the relative mechanism of the photocatalytic process was proposed. Meanwhile, the effects of CN QDs content, pH and initial pollutant concentration on the removal efficiency of ciprofloxacin (CIP) were studied. Results showed that the CN QDs loaded on BTO presented higher photocatalytic efficiency, and an optimum value for the dosage of photocatalytic in pH 8.0.
AB - In this work, a simple method to load of g-C 3 N 4 quantum dots (CN QDs) onto Bi 2 Ti 2 O 7 (BTO) microsphere with the amount of CN QDs (3, 7, 10 and 15%). The photocatalyst was used for the treatment of water pollutants under visible-light illumination, which proved that CNBTO composites showed improved photocatalytic activity matched up to pure BTO. Reformation of BTO with CN QDs enhanced the light assimilation capacity, and promoted the isolation of photo-induced electron-hole pairs. The trapping experiments and ESR were announced the holes (h + ) and superoxide oxide (O 2 [rad] − ) played the key role, and the relative mechanism of the photocatalytic process was proposed. Meanwhile, the effects of CN QDs content, pH and initial pollutant concentration on the removal efficiency of ciprofloxacin (CIP) were studied. Results showed that the CN QDs loaded on BTO presented higher photocatalytic efficiency, and an optimum value for the dosage of photocatalytic in pH 8.0.
KW - Bi Ti O microsphere
KW - Ciprofloxacin
KW - g-C N quantum dots
KW - Photocatalytic performance
UR - https://www.scopus.com/pages/publications/85060215723
U2 - 10.1016/j.saa.2019.01.051
DO - 10.1016/j.saa.2019.01.051
M3 - 文章
C2 - 30677735
AN - SCOPUS:85060215723
SN - 1386-1425
VL - 213
SP - 19
EP - 27
JO - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
JF - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
ER -