Photo-degradation Efficiency of Tetracycline Hydrochloride by ZIF-8/g-C3N4 Composite Photocatalyst
SHUAI Zheng
WAN Xingyu
ZHANG Yizhen
HE Yun
ZHANG Shunxi
SHEN Wenjuan
LI Hui
Abstract：ZIF-8/g-C3N4 heterojunction composites were prepared using ultrasound in situ method at room temperature.The photodegradation efficiency of tetracycline hydrochloride(TC)under simulated visible light was evaluated as well.The results indicate that ZIF-8/g-C3N4 exhibit improved photodegradation efficiency compared to the bare ZIF-8 and bare g-C3N4.The experimental results showed that the maximum light absorption range of ZIF-8/g-C3N4 composite photocatalyst was 470 nm,which was significantly improved compared with that of bare ZIF-8.The energy bandgap of the composite photocatalyst was significantly reduced to 2.79 eV.The ZG-2 composite was highly effective for the removal of TC at the concentration of 50 mg/L for 90 min under illumination.The removal rate of TC at a concentration of 50 mg/L and the ZG-2 dosage of 500 mg/L reached 78.5％,which was 29 percentage points higher than that of g-C3N4,respectively.The combination of free radical capture and ESR experiments revealed that the main active radical that played a role in the removal of TC was h+.The 3-cycle experiments showed that the ZG-2 composite photocatalyst had good stability.
Keywords：g-C3N4ZIF-8heterojunctiontetracycline hydrochloridephotodegradation
Publication Date：2024-12-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 152-159 )