Open AccessPreparation and Photocatalytic Properties of Ce/g-C3N4 Co-doped TiO2 Nanomaterials
Author(s) -
Zhouyun Xie,
Ni Zhang,
Xucheng Yu,
Ya-Jie Xu,
Jingjing Lü,
Li Tang,
Jingfen Xia,
Guojing Yang
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/376/1/012043
Subject(s) - photocatalysis , dopant , materials science , ternary operation , visible spectrum , nuclear chemistry , doping , degradation (telecommunications) , nanomaterials , rhodamine b , chemical engineering , catalysis , nanotechnology , chemistry , organic chemistry , computer science , telecommunications , optoelectronics , engineering , programming language
A Ce/TiO 2 /g-C 3 N 4 composite material was prepared by sol-gel method using g-C 3 N 4 as support and Ce(NH 4 ) 2 (NO 3 ) 6 as dopant. The structural and morphological characterization of the samples was detected by TEM, XRD, FTIR, UV-Vis. RhB was selected as the target pollutant, the photocatalytic and renewable properties of the samples driven by visible light were evaluated. The results showed that Ce/TiO 2 /g-C 3 N 4 had excellent heterojunction structure. The ternary components cooperate with each other to show excellent photocatalytic performance for RhB solution with molar concentration of 0.5×10 −5 mol·L −1 under the condition of dosage of 20.0mg, pH 5.0 and visible light-driven 180min. The degradation rate of RhB was 99.3% better than that of g-C 3 N 4 , TiO 2 and Ce/TiO 2 . Cyclic degradation experiments indicated that the Ce/TiO 2 /g-C 3 N 4 had high photocatalysis stability and reusability. Active group capture experiments revealed that ·O 2 - was the main active species in the photocatalytic degradation of RhB over Ce/TiO 2 /g-C 3 N 4 , and the corresponding contribution rate of ·O 2 - was 84.1%.