Year: 2024
Type: article
Abstract: MG-Al hydrotalcite (MgAl-LDH) was prepared by hydrothermal method, and MgAl-LDH was modified with bismuth oxycarbonate (Bi2O2CO3) in order to obtain Bi2O2CO3/MgAl-LDH composite photocatalytic material. The composition, morphology and band gap of the prepared samples were characterized by XRD, SEM and UV-VIS diffuse reflection. The degradation ability of Bi2O2CO3/MgAl-LDH composite photocatalytic material was tested by degradation methylene blue solution (MB) under natural light. Results: When the modification amount of Bi2O2CO3 was 10%, the photocatalytic performance of the complex was the best, and the degradation rate of MB was as high as 92% in 2 h under natural light (tungsten halogen lamp). The quenching experiments showed that the main active species involved in the degradation of MB were superoxide free radicals (•O2-). Cyclic tests show that the composite photocatalyst still has a certain photocatalytic degradation ability after 5 cycles. Finally, the charge transfer process and mechanism of Bi2O2CO3/MgAl-LDH were investigated by using the experimental data and characterization results.
Source: Chemical Science and Engineering
Authors: Zhang Yaxin, Lin Shuanglong, Li Fangyan
Institution: Shijiazhuang University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4402397095