Synthesis and characterization of a novel g-C3N4/NiAl-LDH/CeO2 photocatalyst for degradation of rhodamine B

IF 3 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

International Journal of Environmental Science and Technology Pub Date : 2024-10-26 DOI:10.1007/s13762-024-06052-2

M. Niknam, M. B. Vandchali, E. Ghasemi, A. Kazemi, N. Yousefi-Limaee

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引用次数: 0

Abstract

A novel photocatalyst comprising g-C3N4/NiAl-layered double hydroxide (LDH)/CeO2 nanocomposites were synthesized via a straightforward hydrothermal method. Rhodamine B (RB) was employed as a model dye to assess the degradation efficiency of the nanocomposites. The catalytic efficiency of the synthesized ternary nanocomposites was compared with of dual g-C3N4/NiAl-LDH and NiAl-LDH/CeO2 nanocomposites. The pristine photocatalysts were subjected to characterization through X-ray diffraction (for crystallinity), field emission scanning electron microscopy and transmission electron microscopy (for microstructure), thermogravimetry analysis (for thermal stability) and X-ray photoelectron spectroscopy (for composition and chemical bondings). UV–visible diffuse reflectance spectroscopy were used for energy band gap calculations. Results demonstrated the successful formation of g-C3N4/NiAl-LDH/CeO2 3D nanocomposite by bridging g-C3N4 and CeO2. The resultant g- C3N4/NiAl-LDH/CeO2 composite exhibited superior photocatalytic activity compared to bare NiAl-LDH, CeO2, and g-C3N4/NiAl-LDH and LDH/CeO2 nanocomposites, achieving a degradation efficiency of 98% for RB under UV irradiation after 350 min. A broader range of absorption (from UV to visible light) was achieved for ternary nanocomposite. A plausible mechanism was proposed based on the observed results and the kinetic of degradation was studied.

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来源期刊

International Journal of Environmental Science and Technology 环境科学-环境科学

CiteScore

5.60

自引率

6.50%

发文量

806

审稿时长

10.8 months

期刊介绍： International Journal of Environmental Science and Technology (IJEST) is an international scholarly refereed research journal which aims to promote the theory and practice of environmental science and technology, innovation, engineering and management. A broad outline of the journal''s scope includes: peer reviewed original research articles, case and technical reports, reviews and analyses papers, short communications and notes to the editor, in interdisciplinary information on the practice and status of research in environmental science and technology, both natural and man made. The main aspects of research areas include, but are not exclusive to; environmental chemistry and biology, environments pollution control and abatement technology, transport and fate of pollutants in the environment, concentrations and dispersion of wastes in air, water, and soil, point and non-point sources pollution, heavy metals and organic compounds in the environment, atmospheric pollutants and trace gases, solid and hazardous waste management; soil biodegradation and bioremediation of contaminated sites; environmental impact assessment, industrial ecology, ecological and human risk assessment; improved energy management and auditing efficiency and environmental standards and criteria.