Synthesis of hematite (α-Fe2O3) nanoparticles using Syzygium cumini extract: Photodegradation of norfloxacin and enhanced recyclability

被引：6

作者：

Ferreira, Davi S. ^{[1
]}

Marques, Gleison N. ^{[2
]}

Ferreira, Adrianadas Merces P. ^{[3
]}

Oliveira, Marcelo M. ^{[1
,3
]}

da Rocha, Claudia Q. ^{[4
]}

Moreira, Ailton J. ^{[5
]}

Fernandes, Carlos H. M. ^{[6
]}

Lanza, Marcos R. ^{[6
]}

Bernardi, Maria Ines B. ^{[7
]}

Mascaro, Lucia H. ^{[2
]}

Rangel, Jose Hilton G. ^{[1
,3
]}

机构：

[1] Fed Inst Maranhao, PPGQ, Campus Sao Luis Monte Castelo IFMA, BR-65030005 Sao Luis, MA, Brazil

[2] Fed Univ Sao Carlos UFSCar, CDMF, LIEC, BR-13565905 Sao Carlos, SP, Brazil

[3] Fed Inst Maranhao, PDQ, Campus Sao Luis Monte Castelo IFMA, BR-65030005 Sao Luis, MA, Brazil

[4] Fed Univ Maranhao UFMA, PPGQuim, BR-65080805 Sao Luis, MA, Brazil

[5] Sao Paulo State Univ, IQ, UNESP, BR-14800060 Araraquara, SP, Brazil

[6] Univ Sao Paulo IQSC USP, IQSC, BR-13566590 Sao Carlos, SP, Brazil

[7] Univ Sao Paulo IFSC USP, IFSC, BR-13560970 Sao Carlos, SP, Brazil

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2025年 / 332卷

基金：

巴西圣保罗研究基金会;

关键词：

Norfloxacin; Photodegradation; alpha-Fe; 2; O; 3; nanoparticles; Green synthesis; Polyphenols; PHENOLIC-COMPOUNDS; GREEN SYNTHESIS; DEGRADATION; PERFORMANCE; REMOVAL; RED;

D O I：

10.1016/j.matchemphys.2024.130281

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, we report obtaining alpha-Fe2O3 nanoparticles by a green synthesis method using different concentrations of Syzygium cumini (L.) Skeels (Myrtaceae) leaf extract. X-ray diffraction (XRD) analysis of materials confirmed the presence of pure hematite phase alpha-Fe2O3 without any impurities. In addition, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques revealed almost spherical NPs' morphology. At the same time, it was clear from the dispersive energy X-ray (EDS) technique that no other chemical elements were present in the sample. On the other hand, the band gap energy obtained from the materials was 1.9 and 2.0 eV. The photodegradation tests showed a photocatalytic efficiency of 96 % for the sample produced with the lowest extract concentration. The mineralization rate of norfloxacin was 32.5 %, as indicated by the Total Organic Carbon tests. In addition, its potential to generate reactive oxygen species that aid in the degradation of the pharmaceutical contaminant has been confirmed.

引用

页数：12

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