Consequences of the calcination on the morphological, structural, optical, and catalytic properties of CuMgFe-layered double hydroxide for photo-fenton degradation

IF 5.3 2区地球科学 Q2 CHEMISTRY, PHYSICAL

Applied Clay Science Pub Date : 2025-02-12 DOI:10.1016/j.clay.2025.107740

Nayara de Melo Costa Serge , Rosembergue Gabriel Lima Gonçalves , Karla Virgínia Leite Lima , York Estewin Serge Correales , João Maurício Beghetto Tomaz de Aquino , Rogéria Rocha Gonçalves , Peter Hammer , Raquel Fernandes Pupo Nogueira

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Abstract

This study explored the influence of calcination on Layered Double Hydroxides (LDH) applied as catalyst in Fenton and photo-Fenton processes evaluated during sulfamethoxazole (SMX) degradation. According to the findings, CuMgFe-layered double hydroxide underwent significant structural, optical, and catalytic transformations following thermal treatment at 400 °C and 650 °C. X-ray Diffraction (XRD) and X-ray Photoelectron Spectroscopy (XPS) analyses showed the formation of pure cuprous delafossites and cupric spinels. The use of the CuMgFe-layered double hydroxide treated at 400 °C and CuMgFe-layered double hydroxide treated at 650 °C in the Fenton process caused an increase in the solution pH, which subsequently inhibited the degradation of SMX, in contrast to LDH without calcination. CuMgFe-layered double hydroxide treated at 400 °C achieved 13 % and 18 % SMX degradation in Fenton and photo-Fenton reaction, while CuMgFe-layered double hydroxide treated at 650 °C resulted in 18 % and 29 %, respectively. Compared to LDH without calcination (26 % and 36 %), the lower degradation values of calcined catalysts were found to be significantly influenced by the pH increase of the suspensions (9.0–9.6). Despite the reduced SMX removal, calcined LDH exhibited intriguing structural and optical modifications, suggesting potential applications beyond degradation processes.

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来源期刊

Applied Clay Science 地学-矿物学

CiteScore

10.30

自引率

10.70%

发文量

289

审稿时长

39 days

期刊介绍： Applied Clay Science aims to be an international journal attracting high quality scientific papers on clays and clay minerals, including research papers, reviews, and technical notes. The journal covers typical subjects of Fundamental and Applied Clay Science such as: • Synthesis and purification • Structural, crystallographic and mineralogical properties of clays and clay minerals • Thermal properties of clays and clay minerals • Physico-chemical properties including i) surface and interface properties; ii) thermodynamic properties; iii) mechanical properties • Interaction with water, with polar and apolar molecules • Colloidal properties and rheology • Adsorption, Intercalation, Ionic exchange • Genesis and deposits of clay minerals • Geology and geochemistry of clays • Modification of clays and clay minerals properties by thermal and physical treatments • Modification by chemical treatments with organic and inorganic molecules(organoclays, pillared clays) • Modification by biological microorganisms. etc...