1. Phyto-Assisted Preparation of Fe2O3 Nanofins Using Elaeocarpus hygrophilus Leaves Extract/Cyano Group Modified Graphitic Carbon Nitride Nanosheets for Enhancing Photocatalytic Efficiency.
- Author
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Hieu, Nguyen Huu, Minh, Dang Thanh Cong, Minh, Phan Nguyen, Cong, Che Quang, Nam, Nguyen Thanh Hoai, Vy, Nguyen Tuong, Dat, Tran Do, Dat, Nguyen Minh, and Phong, Mai Thanh
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ELECTRON field emission , *FOURIER transform infrared spectroscopy , *X-ray emission spectroscopy , *VISIBLE spectra , *TRANSMISSION electron microscopy , *REFLECTANCE spectroscopy - Abstract
In this study, iron oxide nanofins (Fe2O3 NFs) were synthesized using Elaeocarpus hygrophilus leaves extract and decorated on graphitic carbon nitride (gCN) substrate to form the Fe2O3/gCN composite, as a photocatalytic candidate to degrade Rhodamine B (RhB) and produce hydrogen peroxide (H2O2). The morphological, structural, electrochemical, and optical properties of Fe2O3/gCN were determined via analytical methods, including scanning electron microscopy, energy dispersive X-ray, scanning electron microscopy field emission, transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, photoluminescence spectroscopy, ultraviolet–visible diffuse reflectance spectroscopy (UV-DRS), electrochemical impedance spectroscopy, and photocurrent repones. As a result, the band gap of Fe2O3/gCN was determined to be 2.79 eV through UV-DRS and Kubelka–Munk function, which is lower than that of pure gCN (2.82 eV). Such phenomenon provides an RhB photodegradation efficiency of 99.23% within 120 min at pH 4, as well as an H2O2 concentration of 4237.03 μM/g h under visible light radiation, over the 1.0Fe2O3/gCN sample. Further insights elucidate that ⋅O2– plays an important part in the photocatalysis, contributing to light-driven RhB degradation and H2O2 production. The catalytic performance of 1.0Fe2O3/gCN was also maintained after 4 consecutive cycles, which indicates a high potential for environmental remediation and cleaner production processes using light as the driving force. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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