Facile fabrication of CeF3/g-C3N4 heterojunction photocatalysts with upconversion properties for enhanced photocatalytic desulfurization performance

• 作者: Xiaowang Lu Feng Chen Junchao Qian Meng Fu Qiong Jiang Qinfang Zhang
• 来源期刊: 稀土学报（英文版）
• 年，卷（期）: 2021,（10）
• 所属期刊栏目: RARE EARTH CATALYSIS
• 页码范围: 1204-1210
• 页数: 7页
• 语种: 英文

摘要

Cerium fluoride (CeF3) semiconductor with upconversion property was constructed on graphite car-bonitride (g-C3N4) nanosheets by microwave hydrothermal method.The X-ray diffraction,transmission election microscopy,Fourier transform infrared,and X-ray photoelectron spectra techniques were used to characterize the CeF3/g-C3N4 nanocomposite.The study shows that CeF3 has upconversion property and can convert visible light (Vis) and near-infrared light (NIR) into ultraviolet light (UV).Moreover,CeF3 and g-C3N4 can form well-defined heterojunction and promote the effective separation of photo-generated electrons and holes.The synergistic effect of the CeF3/g-C3N4 nanocomposite was evaluated by photocatalytic degradation of dibenzothiophene (DBT).The optimum photocatalyst of CeF3/g-C3N4(40 wt％) composites exhibit the highest photocatalytic desulfurization rate of the model oil under visible light radiation.