Immobilization of green-synthesized silver nanoparticles for micro- and nano-spectroscopic applications: What is the role of used short amino- and thio-linkers and immobilization procedure on the SERS spectra?

Švecová, Marie; Volochanskyi, Oleksandr; Dendisová, Marcela; Palounek, David; Matějka, Pavel

doi:10.1016/j.saa.2020.119142

Cited by 5 publications

(3 citation statements)

References 58 publications

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“…However, these nanoparticles reported in our work were synthesized specifically to immobilize the enzyme glucose oxidase to develop it as a biosensor further. Immobilization using the green synthesis method has been reported in the past [ 46 ]. However, this is the first work where green synthesized ZnO nanoparticles were used for immobilizing the enzyme glucose oxidase, which is specific to glucose.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis and characterization of zinc oxide nanoparticles using Cayratia pedata leaf extract

Jayachandran

Aswathy

Nair

2021

Biochemistry and Biophysics Reports

213

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The synthesis of Zinc oxide nanoparticles using a plant-mediated approach is presented in this paper. The nanoparticles were successfully synthesized using the Nitrate derivative of Zinc and plant extract of the indigenous medicinal plant Cayratia pedata. 0.1 mM of Zn (NO 3 ) 2 .6H 2 O was made to react with the plant extract at different concentrations, and the reaction temperature was maintained at 55 °C, 65 °C, and 75 °C. The yellow coloured paste obtained was wholly dried, collected, and packed for further analysis. In the UV visible spectrometer (UV–Vis) absorption peak was observed at 320 nm, which is specific for Zinc oxide nanoparticles. The characterization carried out using Field Emission Scanning Electron Microscope (FESEM) reveals the presence of Zinc oxide nanoparticles in its agglomerated form. From the X-ray diffraction (XRD) pattern, the average size of the nanoparticles was estimated to be 52.24 nm. Energy Dispersive Spectrum (EDX) results show the composition of Zinc and Oxygen, giving strong energy signals of 78.32% and 12.78% for Zinc and Oxygen, respectively. Fourier Transform - Infra-Red (FT-IR) spectroscopic analysis shows absorption peak of Zn–O bonding between 400 and 600 cm −1 . The various characterization methods carried out confirm the formation of nano Zinc oxide. The synthesized nanoparticles were used in the immobilization of the enzyme Glucose oxidase. Relative activity of 60% was obtained when Glucose oxidase was immobilized with the green synthesized ZnO nanoparticles. A comparative study of the green synthesized with native ZnO was also carried out. This green method of synthesis was found to be cost-effective and eco-friendly.

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Section: Introductionmentioning

confidence: 99%

Green synthesis and characterization of zinc oxide nanoparticles using Cayratia pedata leaf extract

Jayachandran

Aswathy

Nair

2021

Biochemistry and Biophysics Reports

213

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“…These nanoparticles have been widely used for plasmonic surface enhancement and also amplify the optical response of an electrochemical sensors. The electrochemical mechanism is based on the SPR which is influences the plasmonic metal nanoparticles with desired size and shape [6].…”

Section: Introductionmentioning

confidence: 99%

Structural and Optical Properties of AgO Nanoparticles Synthesized using Solid State Combustion

Ramakrishnaiah,

Vinay,

Hegde

et al. 2024

IOP Conf. Ser.: Mater. Sci. Eng.

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Silver oxide nanoparticles (AgO NPs) were synthesized by solid state combustion technique with AgNO3 as a precursor and cow dung cake and cow urine as fuel. XRD results exhibit prominent peaks at 28°, 32°, 46° respectively indicating the AgO nanoparticles in cubic phase. Furthermore, structural elucidation through Rietveld refinement has confirmed the existence Ag2O3 nanoparticles, thereby indicating the formation of silver oxide nanoparticles. UV-Vis-NIR results are indicative that that the silver nanoparticles have exhibited a strong SPR peak at 435 nm, indicating the existence of AgNPs and it is interesting to note that solid state combustion of AgO NPs with cow dung cake has yielded to size of Ago Nps around 4.44 nm and AgO Nps with cow dung cake and cow urine has yielded to size of AgO Nps about 6.31 nm.

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“…Повышенный интерес к оптическим свойствам металлических наночастиц связан с большим количеством практических приложений, таких как химическое и биологическое зондирование [1][2][3][4], сенсорика [5][6][7], поверхностная спектроскопия [8] и сканирующая оптическая микроскопия ближнего поля [9]. Коллективное возбуждение электронов проводимости в металлических наночастицах под действием падающей электромагнитной волны может привести к локализованному поверхностному плазмонному резонансу [10][11][12], что значительно меняет спектр поглощения материала.…”

Section: Introductionunclassified

Анизотропия Оптических Свойств Металлических Нанодисков

Korotun¹,

Павлище²

2021

Оптика И Спектроскопия

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Expressions for the diagonal components of the polarizability tensor, absorption cross sections, and dimensional dependences of the surface plasmon resonance frequencies of metal nanodisks are obtained in the work in the classical approximation. Calculations of the frequency and size dependences of these characteristics for disks of different metals and with different aspect ratios are presented. The influence of the aspect ratio on the evolution of the frequency dependences of the components of the polarizability tensor and absorption cross sections is analyzed. The most significant factors influencing the splitting of the surface plasmon resonance in metal nanodisks with a small asect ratio have been determined.

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Immobilization of green-synthesized silver nanoparticles for micro- and nano-spectroscopic applications: What is the role of used short amino- and thio-linkers and immobilization procedure on the SERS spectra?

Cited by 5 publications

References 58 publications

Green synthesis and characterization of zinc oxide nanoparticles using Cayratia pedata leaf extract

Green synthesis and characterization of zinc oxide nanoparticles using Cayratia pedata leaf extract

Structural and Optical Properties of AgO Nanoparticles Synthesized using Solid State Combustion

Анизотропия Оптических Свойств Металлических Нанодисков

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