A sustainable approach for the synthesis of magnesium aluminate spinel towards photocatalytic applications

被引：0

作者：

Oprea, Ovidiu ^{[1
,2
]}

Gingasu, Dana ^{[3
]}

Culita, Daniela C. ^{[3
]}

Moreno, Jose Maria Calderon ^{[3
]}

Marinescu, Gabriela ^{[3
]}

Preda, Silviu ^{[3
]}

机构：

[1] Natl Univ Sci & Technol Politehn Bucharest, Fac Chem Engn & Biotechnol, 1-7 Polizu St, Bucharest 011061, Romania

[2] Acad Romanian Scientists, 3 Ilfov St, Bucharest 050044, Romania

[3] Romanian Acad, Ilie Murgulescu Inst Phys Chem, 202 Splaiul Independentei, Bucharest 060021, Romania

来源：

JOURNAL OF MATERIALS SCIENCE | 2025年 / 60卷 / 22期

关键词：

MGAL2O4; SPINEL; APPLE PEEL; RAMAN-SPECTROSCOPY; OPTICAL-PROPERTIES; NANOPARTICLES; PHOTOLUMINESCENCE; PHYTOCHEMICALS; CATALYST; BEHAVIOR; SUPPORT;

D O I：

10.1007/s10853-025-10946-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The use of waste from the food industry can help growing concerns about the environmental impact of chemical synthesis methods. This paper described a bioinspired design strategy for the highly efficient preparation of magnesium aluminate (MgAl2O4) nanoparticles using an aqueous extract of apple peel. The impact of calcination temperature on the characteristics of the obtained samples and their photocatalytic capability were discussed. The prepared MgAl2O4 samples were characterized using various techniques: X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive X-ray (EDX), Fourier transform infrared (FT-IR), Raman, Ultraviolet-visible (UV-Vis) and photoluminescence (PL) spectroscopy, and nitrogen adsorption-desorption analysis. The XRD results conformed the obtaining of MgAl2O4 with a spinel structure and an average crystallite size of 5-8 nm. The morphological analysis by SEM revealed aggregates composed of fine nanoparticles. Raman spectroscopy detected only the bands characteristic of spinel-type MgAl2O4 with a high degree of inversion in the cation lattice. The UV-Vis spectra and Tauc's plot analysis of the magnesium aluminate samples obtained after different thermal treatments revealed band gap values of 3.28 and 3.75 eV, respectively. Under visible light irradiation, the photocatalytic efficiency reached similar to 93% against a methyl orange solution. This paper provides new insights into the use of apple peel waste as a bio-renewable and sustainable resource, serving as both a raw material and a platform for the production of useful nanoparticles for environmental remediation. [GRAPHICS] .

引用

页码：9242 / 9262

页数：21

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