One-pot electrosynthesis of silver nanorods/graphene nanocomposite using 4-sulphocalix[4]arene for selective detection of oxalic acid

Nagarajan, Ramila D.; Sundramoorthy, Ashok K.

doi:10.1016/j.snb.2019.127132

Cited by 29 publications

(15 citation statements)

References 56 publications

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“…In recent years, there has been a growing interest in the synthesis of metal nanoparticles (MNPs) such as silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) due to their useful properties for applications in different areas of medicine, biology, catalysis, and antibacterial [1][2][3][4]. Along with the rapid development of nanotechnology, several promising approaches were utilized to synthesize AgNPs and AuNPs [5][6][7]. Owing to the simplicity and rapid operation, chemical reduction methods using commercial chemicals such as hydrazine [8], sodium borohydride [9], ascorbic acid [10], and ethylene glycol [11] are widely applied to convert gold and silver ions into metals at nanoscale.…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of Silver and Gold Nanoparticles Using Aqueous Extract of Codonopsis pilosula Roots for Antibacterial and Catalytic Applications

Doan

Huynh

Nguyen

et al. 2020

Journal of Nanomaterials

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In this study, biogenic silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) were synthesized by a green approach using an aqueous extract from Codonopsis pilosula (CP) roots as a reducing and stabilizing agent. The formation of CP-AgNPs and CP-AuNPs was confirmed and optimized by UV-Vis spectroscopy. The CP-AgNPs and CP-AuNPs obtained under optimum conditions of metal ion concentration, reaction temperature, and reaction time were characterized by high-resolution transition electron microscopy (HR-TEM), selected area electron diffraction (SAED) analysis, field-emission scan electron microscopy (FE-SEM), powder X-ray diffraction (XRD) analysis, Fourier transform infrared (FTIR) spectroscopy, dispersive X-ray spectroscopy (EDX), and dynamic light scattering (DLS) method. It has been found that the biosynthesized CP-AgNPs and CP-AuNPs were formed in spherical shape with an average size of 10±2.5 nm and 20±3.2 nm, respectively. The biosynthesized metallic nanoparticles exhibited selective bacterial activity against three bacterial strains including two Gram-positive bacteria of Bacillus subtilis and Staphylococcus aureus and one Gram-negative bacteria of Escherichia coli. Meanwhile, there was no antibacterial activity detected toward Gram-negative Salmonella enteritidis. CP-AgNPs and CP-AuNPs also manifested an excellent catalytic performance in the reduction of 1,4-dinitrobenzene, 2-nitrophenol, 3-nitrophenol, and 4-nitrophenol.

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Section: Introductionmentioning

confidence: 99%

Biosynthesis of Silver and Gold Nanoparticles Using Aqueous Extract of Codonopsis pilosula Roots for Antibacterial and Catalytic Applications

Doan

Huynh

Nguyen

et al. 2020

Journal of Nanomaterials

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“…However, when we varied the amount of Ti 3 C 2 T x (host) on the GCE, the surface adsorption of FAD was also increased. For the lowest amount of Ti 3 C 2 T x , a thin layer of FAD was formed on the surface of Ti 3 C 2 T x [ 41 ]. When the amount of Ti 3 C 2 T x was gradually increased, the deposition of FAD (molecules) was also increased on the electrode surface.…”

Section: Resultsmentioning

confidence: 99%

Biocompatible MXene (Ti3C2Tx) Immobilized with Flavin Adenine Dinucleotide as an Electrochemical Transducer for Hydrogen Peroxide Detection in Ovarian Cancer Cell Lines

et al. 2021

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Flavin adenine dinucleotide (FAD) is a coenzyme and acts as a redox cofactor in metabolic process. Owing to such problems as poor electron transfer properties, unfavorable adsorption, and lack of stability on rigid electrodes, the bio-electrochemical applications of FAD have been limited. Herein, a novel fabrication method was developed for the immobilization process using 2D MXene (Ti3C2Tx), which enhanced the redox property of FAD and improved the electro-catalytic reduction of hydrogen peroxide (H2O2) in neutral medium. The FAD-immobilized Ti3C2Tx electrode (FAD/Ti3C2Tx) was studied by UV-Visible and Raman spectroscopies, which confirmed the successful adsorption of FAD on the Ti3C2Tx surface. The surface morphology and the elemental composition of Ti3C2Tx were investigated by high resolution transmission electron microscopy and the energy dispersive X-ray analysis. The redox property of the FAD/Ti3C2Tx modified glassy carbon electrode (FAD/Ti3C2Tx/GCE) was highly dependent on pH and exhibited a stable redox peak at −0.455 V in neutral medium. Higher amounts of FAD molecules were loaded onto the 2D MXene (Ti3C2Tx)-modified electrode, which was two times higher than the values in the reported work, and the surface coverage (ᴦFAD) was 0.8 × 10−10 mol/cm2. The FAD/Ti3C2Tx modified sensor showed the electrocatalytic reduction of H2O2 at −0.47 V, which was 130 mV lower than the bare electrode. The FAD/Ti3C2Tx/GCE sensor showed a linear detection of H2O2 from 5 nM to 2 µM. The optimization of FAD deposition, amount of Ti3C2Tx loading, effect of pH and the interference study with common biochemicals such as glucose, lactose, dopamine (DA), potassium chloride (KCl), ascorbic acid (AA), amino acids, uric acid (UA), oxalic acid (OA), sodium chloride (NaCl) and acetaminophen (PA) have been carried out. The FAD/Ti3C2Tx/GCE showed high selectivity and reproducibility. Finally, the FAD/Ti3C2Tx modified electrode was successfully applied to detect H2O2 in ovarian cancer cell lines.

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“…Considering that, as an organic acid, oxalic acid has a strong ability to dissolve metal compounds, [12][13][14][15] we conducted the dissolution test of oxalic acid on Ag- containing compounds as shown in Figure 8, expecting to effectively remove the compound. In the test, we used a 5.0% by mass aqueous solution of oxalic acid to dissolve the Ag-containing compounds on the surface of IC pad and set dissolution time to 0-220 s. The experimental results show that the Ag-containing compounds cannot be effectively removed by aqueous oxalic acid solution in various parallel experiments.…”

Section: Oxalic Acid Aqueous Solution Dissolution Test On Ag-contaimentioning

confidence: 99%

Investigation on Ag‐containing compound generated in manufacturing of low‐temperature polycrystalline Si active matrix organic light‐emitting diode

Jin

Lee

et al. 2020

J Soc Info Display

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In this work, we report a systematic investigation on Ag-containing compound widely generated in anode wet etching process of low-temperature polycrystalline Si active matrix organic light-emitting diode (LTPS-AMOLED). The formation mechanism of the aforementioned compound was proposed and confirmed by sufficient evidence. The relevant test results show that, unlike traditional metal compounds, this compound cannot be removed by aqueous oxalic acid solution. Furthermore, the reported Ag-containing compounds grow and migrate in response to electric fields in high-temperature and highhumidity environment (85 C, 85% humidity) to short neighboring integrated circuit pads, causing severe product reliability failure. Spectra test results indicate that products with reliability failure are characterized by reduced display brightness and shifted color coordinates. To improve the reliability failure caused by Ag-containing compounds, five potential schemes are presented, and most of them are conducted in this study.

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One-pot electrosynthesis of silver nanorods/graphene nanocomposite using 4-sulphocalix[4]arene for selective detection of oxalic acid

Cited by 29 publications

References 56 publications

Biosynthesis of Silver and Gold Nanoparticles Using Aqueous Extract of Codonopsis pilosula Roots for Antibacterial and Catalytic Applications

Biosynthesis of Silver and Gold Nanoparticles Using Aqueous Extract of Codonopsis pilosula Roots for Antibacterial and Catalytic Applications

Biocompatible MXene (Ti3C2Tx) Immobilized with Flavin Adenine Dinucleotide as an Electrochemical Transducer for Hydrogen Peroxide Detection in Ovarian Cancer Cell Lines

Investigation on Ag‐containing compound generated in manufacturing of low‐temperature polycrystalline Si active matrix organic light‐emitting diode

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