Efficient Visible-Light-Responsive Ag 3 PO 4 /g-C 3 N 4 /Hydroxyapatite Photocatalyst (from Oyster Shells) for the Degradation of Methylene Blue: Preparation, Properties and Mechanism.

Autor: Song, Cui, Shang, Changyu, Li, Shuqian, Wang, Wenhao, Qi, Mingying, Chen, Jingdi, Liu, Haijun
Předmět:
Zdroj: Catalysts (2073-4344); Feb2022, Vol. 12 Issue 2, p115, 1p
Abstrakt: A novel ternary Ag3PO4/g-C3N4/hydroxyapatite photocatalyst was prepared, and its morphology, composition and structure were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, high-resolution transmission electron microscopy, and electron spin resonance, etc. The results show that g-C3N4 is evenly dispersed in the interior of hydroxyapatite, forming a homogeneous composite, and significantly improves the band gap structure of the material as a whole. Ag3PO4/g-C3N4/hydroxyapatite has good electron transfer ability and an appropriate energy band structure, which shows that the material has a good degradation effect and stability. Finally, based on the characterization and experimental results, a possible Z-scheme mechanism was proposed, and the active species involved in the reaction are mainly ·O2− and h+. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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