Α−Fe2O3 Nanoparticles/Porous g−C3N4 Hybrids Synthesized by Calcinations of Fe‐based MOF/Melamine Mixtures for Boosting Visible‐Light Photocatalytic Tetracycline Degradation. Issue 11 (17th March 2020)

• Record Type: Journal Article
• Authors: Wang, Baogang; Liu, Xing; Dai, Shanshan; Lu, Hongsheng
• Is Part Of: ChemistrySelect. Volume 5:Issue 11(2020)
• Page Start: 3303
• Page End: 3311
• Publication Date: 2020-03-17
• Subjects: α−Fe2O3 -- g−C3N4 -- Hybrid -- Photocatalysis -- Metal-organic frameworks -- Tetracycline degradation; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201904388
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: A series of α−Fe2 O3 nanoparticles/porous g−C3 N4 hybrids were facile synthesized by calcinations of the Fe‐based MOF/melamine mixtures with different mass ratios for boosting visible‐light (λ>420 nm) photocatalytic tetracycline degradation in water. As expected, the specially designed hybrids exhibited obviously improved photocatalytic performance for tetracycline degradation. Specifically, the photocatalytic activity of Fe2 O3 /g−C3 N4 ‐0.4, an optimized hybrid, was about 2.64 times higher than that of bulk g−C3 N4 . The results of structure characterizations and photoelectric property tests reflected that the large surface area and strong interfacial coupling of Fe2 O3 /g−C3 N4 ‐0.4 resulted in its high photocatalytic activity by providing the adequate active sites and promoting the separation and transfer of photo‐generated electron‐hole (e − ‐h + ) pairs. In addition, the photocatalytic mechanism of Fe2 O3 /g−C3 N4 ‐0.4 was studied and the h + was determined to be the main active specie for tetracycline degradation. This work can provide crucial theoretical guidance for developing Fe2 O3 /g−C3 N4 hybrid catalysts toward pollutant photodegradation. Abstract : Using the Fe‐based MOF‐melamine mixtures as precursors, the α−Fe2 O3 nanoparticles/porous g−C3 N4 hybrids were facile synthesized and used as the visible light‐driven photocatalysts for tetracycline degradation. Compared with g−C3 N4, the hybrids exhibited enhanced photocatalytic activity owing to their large specific surface area and high‐efficiency separation and transfer of photoinduced charge carriers.