zhpsЖурнал прикладной спектроскопииZhurnal Prikladnoii Spektroskopii0514-7506B. I. Stepanov Institute of Physics of the National Academy of Scienceszhps-2045Research ArticleАННОТАЦИИ АНГЛОЯЗЫЧНЫХ СТАТЕЙABSTRACTS ENGLISH-LANGUAGE ARTICLESХарактеристика и оценка антимикробной и фотокаталитической активности наночастиц оксида лития, синтезированных “зеленым” методомGreen Synthesis and Evaluation of Lithium Oxide Nanoparticles for Antimicrobial and Photocatalytic ApplicationsMohammed IbrahimA.Mohammed IbrahimA.

Тамилнад

Chennai, Tamilnadu

Mohammed MusthaqueK.Mohammed MusthaqueK.

Тамилнад

Chennai, Tamilnadu

NandhagopalS.NandhagopalS.

Ченнаи, Тамилнад

Chennai, Tamilnadu

Новый колледж ЧеннаиPG & Research Department of Chemistry, The New College (Autonomous)Центр молекулярных и наномедицинских наук Института науки и технологий СатьябамыCentre for Molecular and Nanomedical Sciences, Satyabama Institute of Science and Technology202526112025926833833Copyright © Mohammed Ibrahim A., Mohammed Musthaque K., Nandhagopal S., 20252025Mohammed Ibrahim A., Mohammed Musthaque K., Nandhagopal S.Mohammed Ibrahim A., Mohammed Musthaque K., Nandhagopal S.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://zhps.ejournal.by/jour/article/view/2045

Наночастицы оксида лития (НЧ LiO) синтезированы “зеленым” методом с использованием экстракта листьев Trigonella foenum-graecum в качестве как восстанавливающего, так и связующего агента. Синтезированные НЧ охарактеризованы с помощью УФ-видимой спектроскопии, рентгеновской дифракции, инфракрасной спектроскопии с Фурье-преобразованием и сканирующей электронной микроскопии. УФ-видимые спектры показали сильное поглощение, соответствующее характеристической полосе НЧ LiO, со сдвигом в красную область по мере увеличения весовой доли. Рентгеновская дифракция подтвердила образование НЧ LiO с моноклинной структурой и средним размером кристаллитов 29.5 нм. Анализ сканирующей электронной микроскопии показал почти сферические, агрегированные НЧ. Фотокаталитическую активность НЧ LiO2 оценивали по деградации метилового оранжевого под действием УФ-видимого облучения. Антибактериальная активность НЧ LiO2 исследована в отношении грамположительных бактерий (Staphylococcus aureus, Salmonella abony и Bacillus subtilis), грамотрицательных бактерий (Escherichia coli) и грибкового патогена Candida albicans. При концентрации 50% НЧ проявляли наибольшую антибактериальную активность с зонами ингибирования 16.0, 11.0, 8.0 ± 0.10, 11.0 ± 0.32 и 10.0 ± 0.0 мм против E. coli, S. aureus, S. abony, C. albicans и B. subtilis соответственно. Продемонстрировано, что экстракт листьев T. foenum-graecum может эффективно использоваться в качестве защитного, стабилизирующего и восстанавливающего агента для “зеленого” синтеза НЧ LiO2 со значительным антимикробным потенциалом.

The growing emphasis on green technology has increased interest in cost-effective and environmentally sustainable methods for nanoparticle synthesis. In this study, lithium oxide nanoparticles (LiO NPs) were synthesized via a green route using Trigonella foenum-graecum leaf extract as both a reducing and capping agent. The synthesized nanoparticles were characterized using UV–visible spectroscopy (UV–Vis), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The UV–Vis spectra revealed strong absorption corresponding to the characteristic band of LiO NPs, with a red shift observed as the weight fraction increased. XRD confirmed the formation of LiO NPs with a monoclinic structure and an average crystallite size of 29.5 nm. SEM analysis showed nearly spherical, aggregated nanoparticles. The photocatalytic activity of LiO NPs was evaluated through the degradation of methyl orange under UV–Vis irradiation. In addition, the antibacterial activity of LiO NPs was tested against gram-positive bacteria (Staphylococcus aureus, Salmonella abony, and Bacillus subtilis), gram-negative bacteria (Escherichia coli), and the fungal pathogen Candida albicans. At a 50% weight fraction, the nanoparticles exhibited the highest antibacterial activity, with inhibition zones of 16.0, 11.0, 8.0 ± 0.10, 11.0 ± 0.32, and 10.0 ± 0.0 mm against E. coli, S. aureus, S. abony, C. albicans, and B. subtilis, respectively. Overall, this study demonstrates that T. foenum-graecum leaf extract can be effectively utilized as a capping, stabilizing, and reducing agent for the green synthesis of LiO NPs with significant antimicrobial potential. This eco-friendly and low-cost method enhances the antibacterial efficiency of LiO NPs and highlights their potential applications in biomedical fields.

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The authors declare that there are no conflicts of interest present.