Open AccessFabrication of CdS/ZnS/g-C3N4 Composites for Enhanced Visible-Light Photocatalytic Degradation Performance
Author(s) -
Huan Liu,
Ping Li,
Shuwang Duo
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/719/4/042046
Subject(s) - photocatalysis , ternary operation , photodegradation , materials science , composite number , heterojunction , photoluminescence , visible spectrum , degradation (telecommunications) , quantum efficiency , chemical engineering , composite material , optoelectronics , catalysis , chemistry , organic chemistry , electronic engineering , computer science , engineering , programming language
Constructing a heterojunction is an ideal way to modify the photocatalytic efficiency of semiconductor photocatalysts. In this paper, CdS/ZnS/g-C 3 N 4 (CZG) ternary composites with different mass ratio of CdS (10%, 20%, 30%) were prepared by cation exchange method using as-synthesized ZnS/g-C 3 N 4 and Cd(NO 3 ) 2 ·6 H 2 O as the starting materials. The composition and optical properties were investigated by XRD and photoluminescence spectra (PL). The results showed the ternary heterojunctions possessed faster photo-induced electrons/holes separation efficiency. The photocatalytic experiments exhibited that the obtained ternary composite materials exhibited enhanced visible-light photodegradation efficiency for the degradation of MO aqueous solution. Among the ternary composite materials, the CZG-10% composite displayed the highest photocatalytic performance of 68.52%. The enhanced photodegradation efficiency could be ascribed to the reasonable design of the heterojunction.