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RISS 인기검색어
- 검색키워드
- 저자 : Bathinapatla Sravani (검색결과 2 건)
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Mallikarjuna, K.,Veera Manohara Reddy, Y.,Sravani, Bathinapatla,Madhavi, G.,Kim, Haekyoung,Agarwal, Shilpi,Gupta, Vinod Kumar Elsevier 2018 Journal of Electroanalytical Chemistry Vol.822 No.-
<P><B>Abstract</B></P> <P>Bimetallic nanomaterials have potential catalytic behaviour in hydrogenation, clean- energy production, catalysis and sensors due to their great stability, loftier activity unique electrical and chemical properties. Herein, we prepared PdAg bimetallic nanoparticles synthesized by using fungal extracted aqueous method, which is environmentally friendly cost-effective and simple procedure. The fabricated PdAg bimetallic nanoparticles were investigated by small area electron diffraction (SAED), transmission electron microscopy (TEM) X-ray photoelectron spectroscopy (XPS) and energy dispersive X-ray spectroscopy (EDX) analysis. The electrochemical response of uric acid (UA) at Pd-Ag/CPE was studied in 0.1 M phosphate buffer solution at various pH, concentration and scan rate was investigated. Compare to Bare CPE, the PdAg nanocomposite modified electrode displayed the highest electrocatalytic activity for the detection of UA A linear response in the range of 4.69–273 nM with remarkable detection limit of 5.543 nM (C<SUB>DL</SUB> = 3ϭ/M) and quantification limit of 16.64 nM (C<SUB>QL</SUB> = 10ϭ/M) was obtained. The established nanoparticles (PdAg) embedded with carbon paste electrode (Pd-Ag/CPE) makes a good analytical tool for the sensing of UA in the biological and pharmaceutical samples.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Pd-Ag bimetallic nanoparticles based electrochemical sensor was fabricated </LI> <LI> uric acid is determined at nanomolar levels </LI> <LI> The practical feasibility of the developed sensor was successfully was performed </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>Electrochemical investigation of uric acid at biogenic PdAg bimetallic nanostructures modified carbon paste electrode.</P> <P>[DISPLAY OMISSION]</P>
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Sada Venkateswarlu,Manthrapudi Venu,Yenegu Veera Manohara Reddy,Bathinapatla Sravani,코두루말리카주나,윤민영,G. Madhavi 대한화학회 2019 Bulletin of the Korean Chemical Society Vol.40 No.6
A carbon paste electrode (CPE)/Cu nanowire (Cu NW)/poly(1-ethyl-3-methylimidazolium methyl sulfate) based sensor was successfully fabricated by the electro-polymerization of 1-ethyl-3-methylimidazolium methyl sulfate (EMIMS) onto the surface of Cu nanowires-modified carbon paste electrode. The morphology and chemical nature of Cu NWs were characterized by FTIR, FE-SEM, TEM, XRD techniques. The CPE/CuNWs/poly(EMIMS) showed an electrocatalytic activity toward the determination of etilefrine hydrochloride (ET-HCl) in the 0.11?M buffer solution of phosphate at pH 7.0. The CPE/CuNWs/poly(EMIMS) showed an excellent limit of detection (LOD) 2.3 ?M over the linear dynamic range of 0.1 to 1.3 ?M. The prepared CPE/CuNWs/poly(EMIMS) has exhibited high stability, good sensitivity, and low detection limit for the determination of ET-HCl. The validity of this advanced method was checked by applying in the blood plasma samples, with satisfactory results. This novel CPE/CuNWs/poly(EMIMS) can be an attractive material for the applications in biomedical and sensor fields.
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