Green Synthesis of CuO Nanostructures using Syzygium guineense (Willd.) DC Plant Leaf Extract and Their Applications

IF 1.4 Q4 NANOSCIENCE & NANOTECHNOLOGY

Journal of Nanostructures Pub Date : 2021-01-01 DOI:10.22052/JNS.2021.01.010

Tegene Desalegn, H. Murthy, C. Ravikumar, H. P. Nagaswarupa

{"title":"Green Synthesis of CuO Nanostructures using Syzygium guineense (Willd.) DC Plant Leaf Extract and Their Applications","authors":"Tegene Desalegn, H. Murthy, C. Ravikumar, H. P. Nagaswarupa","doi":"10.22052/JNS.2021.01.010","DOIUrl":null,"url":null,"abstract":"The medicinal plant, Syzygium guineense (Willd.) DC (Waterberry) mediated green copper oxide nanostructures (SyG-CuO NSs) were successfully synthesized for the first time in Ethiopia. The antibacterial activity of CuO NSs capped by biomolecules of the plant leaf extract has been investigated. The UV-visible, UV-DRS, FT-IR, XRD, TGA-DTA, SEM, EDXA, TEM, HRTEM and SAED techniques were employed to characterize the NSs. The presence of two absorbance maxima, λmax1 and λmax2 at 423 nm and 451 nm, respectively confirms a mixture of copper oxide (Eg=1.93 eV). FTIR spectra confirmed the presence of biomolecules with SyG-CuO NSs. The XRD patterns of NSs confirmed the presence of CuO with high crystallinity. The purity of the NSs was confirmed by SEM-EDAX analysis. In addition, TEM-HRTEM-SAED analysis revealed the d-spacing value of 0.2854 nm which corresponds to CuO (111) lattice fringe. SyG-CuO NSs showed good antibacterial effect against both Gram-positive bacteria, S. aureus (12 mm), and Gram-negative bacteria, E. coli (12 mm), P. aeruginosa (10 mm), and E. aerogenes (12 mm). The bioactive compounds capped around the CuO NPs served the effective role in disrupting the cell wall of bacterial strains. The CV and EIS studies confirmed the better electrochemical properties for SyG-CuO with low charge transfer resistance value of 49 Ω. These CuO NSs exhibited multifunctional applications.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"11 1","pages":"81-94"},"PeriodicalIF":1.4000,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Nanostructures","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.22052/JNS.2021.01.010","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"NANOSCIENCE & NANOTECHNOLOGY","Score":null,"Total":0}

引用次数: 9

Abstract

The medicinal plant, Syzygium guineense (Willd.) DC (Waterberry) mediated green copper oxide nanostructures (SyG-CuO NSs) were successfully synthesized for the first time in Ethiopia. The antibacterial activity of CuO NSs capped by biomolecules of the plant leaf extract has been investigated. The UV-visible, UV-DRS, FT-IR, XRD, TGA-DTA, SEM, EDXA, TEM, HRTEM and SAED techniques were employed to characterize the NSs. The presence of two absorbance maxima, λmax1 and λmax2 at 423 nm and 451 nm, respectively confirms a mixture of copper oxide (Eg=1.93 eV). FTIR spectra confirmed the presence of biomolecules with SyG-CuO NSs. The XRD patterns of NSs confirmed the presence of CuO with high crystallinity. The purity of the NSs was confirmed by SEM-EDAX analysis. In addition, TEM-HRTEM-SAED analysis revealed the d-spacing value of 0.2854 nm which corresponds to CuO (111) lattice fringe. SyG-CuO NSs showed good antibacterial effect against both Gram-positive bacteria, S. aureus (12 mm), and Gram-negative bacteria, E. coli (12 mm), P. aeruginosa (10 mm), and E. aerogenes (12 mm). The bioactive compounds capped around the CuO NPs served the effective role in disrupting the cell wall of bacterial strains. The CV and EIS studies confirmed the better electrochemical properties for SyG-CuO with low charge transfer resistance value of 49 Ω. These CuO NSs exhibited multifunctional applications.

查看原文本刊更多论文

绿色合成氧化铜纳米结构的研究DC植物叶片提取物及其应用

药用植物豚鼠合欢(野生)在埃塞俄比亚首次成功合成了DC (Waterberry)介导的绿色氧化铜纳米结构(SyG-CuO NSs)。研究了植物叶提取物生物分子封顶的CuO NSs的抑菌活性。采用UV-visible、UV-DRS、FT-IR、XRD、TGA-DTA、SEM、EDXA、TEM、HRTEM和SAED等技术对NSs进行表征。在423 nm和451 nm处存在两个吸光度最大值λmax1和λmax2，证实了氧化铜的混合物(Eg=1.93 eV)。FTIR光谱证实了SyG-CuO NSs生物分子的存在。NSs的XRD谱图证实了高结晶度的CuO的存在。通过SEM-EDAX分析证实了NSs的纯度。TEM-HRTEM-SAED分析表明，d-spacing值为0.2854 nm，与CuO(111)晶格条纹相对应。SyG-CuO NSs对革兰氏阳性菌金黄色葡萄球菌(12 mm)、革兰氏阴性菌大肠杆菌(12 mm)、铜绿假单胞菌(10 mm)、产气大肠杆菌(12 mm)均有良好的抑菌效果。覆盖在CuO NPs周围的生物活性化合物在破坏菌株细胞壁方面发挥了有效的作用。CV和EIS研究证实了SyG-CuO具有较好的电化学性能，其电荷转移电阻值为49 Ω。这些CuO NSs具有多种用途。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Nanostructures NANOSCIENCE & NANOTECHNOLOGY-

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

7 weeks

期刊介绍： Journal of Nanostructures is a medium for global academics to exchange and disseminate their knowledge as well as the latest discoveries and advances in the science and engineering of nanostructured materials. Topics covered in the journal include, but are not limited to the following: Nanosystems for solar cell, energy, catalytic and environmental applications Quantum dots, nanocrystalline materials, nanoparticles, nanocomposites Characterization of nanostructures and size dependent properties Fullerenes, carbon nanotubes and graphene Self-assembly and molecular organization Super hydrophobic surface and material Synthesis of nanostructured materials Nanobiotechnology and nanomedicine Functionalization of nanostructures Nanomagnetics Nanosensors.