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Photocatalytic Degradation of Methylene Blue by Using ZnO/Longan Seed Activated Carbon Under Visible-Light Region by Nguyen Van Hung; Bui Thi Minh Nguyet; Nguyen Huu Nghi; Dinh Quang Khieu is a Materials Science article available to read on EtoBox.

What is Photocatalytic Degradation of Methylene Blue by Using ZnO/Longan Seed Activated Carbon Under Visible-Light Region about?

In the present study, the synthesis of zinc oxide/longan seed activated carbon material (ZnO/LSAC) and its photocatalytic activity under the visible-light region are demonstrated. The pyrolysis of the carbonized material prepared from longan seeds and zinc acetate in the alkaline medium was conducted to manufacture ZnO/LSAC. The obtained material was characterized by using X-ray diffraction, Fourier transformation-infrared spectroscopy, high-resolution transmission electron microscopy, energy-dispersive X-ray elemental mapping observation, nitrogen adsorption/desorption isotherms, ultraviolet-diffusive reflectance spectroscopy (DRS-UV-Vis), and photoluminescence spectra. The ZnO nanoparticles with 20-30 nm in diameter are highly dispersed on the LSAC matrix. The combination of ZnO with LSAC promotes visible-light absorption. The photocatalytic activities of the prepared composite were evaluated for the degradation of methylene blue (MB) under visiblelight irradiation. The kinetics and mechanism for photodegradation were addressed. The kinetic data and equilibrium data fit the modified Langmuir-Hinshelwood model. Introducing C to ZnO lattice creates an intermediate energy level and

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Author

Nguyen Van Hung; Bui Thi Minh Nguyet; Nguyen Huu Nghi; Dinh Quang Khieu

Publisher

Springer Science and Business Media LLC

Published

2020

Language

EN

Field

Materials Science (Physical Sciences)