Graphene Quantum Dots: Green Synthesis, Characterization, and Antioxidant and Antimicrobial Potential

IF 4.3 3区材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

ACS Applied Electronic Materials Pub Date : 2024-01-23 DOI:10.1155/2024/2626006

Pooja Kadyan, Ponnusamy Thillai Arasu, S. K. Kataria

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引用次数: 0

Abstract

Antibiotic resistance is becoming more common, emphasising the demand for novel antibacterial treatments. The current investigation describes the green synthesis of graphene quantum dots (GQDs) using M. indica leaves and characterization via Fourier-transform infrared spectra (FTIR), X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and ultraviolet-visible (UV-Vis) spectrophotometer. The results showed that GQDs are spherical in shape. In vitro antioxidant and antimicrobial studies indicate that the biological efficacy of synthesized GQDs was higher than the ethanolic leaf extract. GQDs exhibited the highest scavenging efficacy with lowest IC50 (half-maximal inhibitory concentration) value. However, antimicrobial study showed more inhibitory activity of GQDs against all screened microorganisms, i.e., Staphylococcus aureus, Escherichia coli, Bacillus subtilis, and Pseudomonas aeruginosa, and fungi, i.e., Aspergillus niger and Aspergillus flavus. Graphene quantum dots facilitate reactive oxygen species (ROS) which ultimately lead to antioxidant and antibacterial activity. This approach would provide an efficient alternate method for tackling microorganisms.

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石墨烯量子点：绿色合成、表征以及抗氧化和抗菌潜力

抗生素耐药性正变得越来越普遍，这凸显了对新型抗菌疗法的需求。本研究介绍了利用籼米叶绿色合成石墨烯量子点（GQDs），并通过傅立叶变换红外光谱（FTIR）、X射线衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）和紫外可见分光光度计（UV-Vis）进行表征。结果表明，GQDs 呈球形。体外抗氧化和抗菌研究表明，合成的 GQDs 的生物功效高于乙醇叶提取物。GQDs 的清除效果最高，IC50（半最大抑制浓度）值最低。然而，抗菌研究表明，石墨烯量子点对所有筛选的微生物（即金黄色葡萄球菌、大肠杆菌、枯草杆菌和绿脓杆菌）以及真菌（即黑曲霉和黄曲霉）具有更强的抑制活性。石墨烯量子点可促进活性氧（ROS），最终产生抗氧化和抗菌活性。这种方法将为解决微生物问题提供一种有效的替代方法。

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来源期刊

ACS Applied Electronic Materials Multiple-

CiteScore

7.20

自引率

4.30%

发文量

567

期刊介绍： ACS Applied Electronic Materials is an interdisciplinary journal publishing original research covering all aspects of electronic materials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials science, engineering, optics, physics, and chemistry into important applications of electronic materials. Sample research topics that span the journal's scope are inorganic, organic, ionic and polymeric materials with properties that include conducting, semiconducting, superconducting, insulating, dielectric, magnetic, optoelectronic, piezoelectric, ferroelectric and thermoelectric. Indexed/Abstracted： Web of Science SCIE Scopus CAS INSPEC Portico