Photochemical one-pot synthesis of reduced graphene oxide/Prussian blue nanocomposite for simultaneous electrochemical detection of ascorbic acid, dopamine, and uric acid

Santos, Pãmyla L. dos; Katic, Vera; Toledo, Kalil Cristhian Figueiredo; Bonacin, Juliano Alves

doi:10.1016/j.snb.2017.09.036

Cited by 100 publications

(36 citation statements)

References 55 publications

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“…The hydrophilic character permits its deposition onto various substrates, and makes its modification easier. The large number of oxygen‐functional group on graphene oxide, can be reduced by various methods such as thermal annealing, 18 photochemical, 19 and chemical 20 . Among these, chemical reduction is one of the most applied synthesis methods, which is based on the use of hydroquinone, sodium borohydride, or hydrazine as reductant agent to break the oxygen bonds in the GO.…”

Section: Introductionmentioning

confidence: 99%

Bio‐reduced GO /Pd nanocomposite as an efficient and green synthesized catalyst for hydrogen evolution reaction

Kayan

Turunç

2021

Int J Energy Res

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Summary In this work, we introduced a green methodology for the production of palladium (Pd) decorated reduced graphene oxide (rGO), using an endemic plant of Onosma malatyana Binzet (OMB) root extract for the first time and used it as an electrocatalyst for hydrogen evolution reaction (HER) in aqueous acidic media. Benefiting from the synergetic effect between rGO and Pd nanoparticles, the as‐prepared bio‐reduced GO/Pd (bio‐rGO/Pd) nanocomposite exhibits a remarkable performance towards HER when the results compared with the bio‐rGO and bio‐rPd nanocomposite. The HER overpotential at a current density of 10 mA cm−2 for bio‐rGO/Pd was only 0.17 V. The Tafel slope of the bio‐rGO/Pd nanocomposite film obtained from the HER polarization curves exhibits 154 mV dec−1, showing that the process is limited by the Volmer reaction step. In addition, the bio‐rGO/Pd nanocomposite electrode also showed an outstanding stability after a long‐term potential cycling measurement. It possesses a high synergetic effect, low charge transfer resistance and considerable electrochemical surface area. The all obtained results demonstrated that the bio‐rGO/Pd will be a promising green synthesized HER catalyst.

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Section: Introductionmentioning

confidence: 99%

Bio‐reduced GO /Pd nanocomposite as an efficient and green synthesized catalyst for hydrogen evolution reaction

Kayan

Turunç

2021

Int J Energy Res

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“…Therefore, there have been efforts toward the development of greener synthesis processes to produce Ag-NPs 11,12 with tailored properties that reduce toxicity against eukaryotic systems. 13 Although there are various methods to synthesize Ag-NPs, including chemical reduction, 14 photochemical reduction, 15,16 electrochemical reduction, 17 vaporization, and thermal synthesis, 18 there is a growing interest in developing a green synthesis method to produce nanoparticles using biological systems 19,20 and plant extracts. 21 Notwithstanding the diversity of green synthesis approaches, the use of plant extracts, as reductive media for nanoparticle synthesis, is one of the most convenient routes.…”

Section: Introductionmentioning

confidence: 99%

In vivo antimicrobial activity of silver nanoparticles produced via a green chemistry synthesis using <em>Acacia rigidula</em> as a reducing and capping agent

Escárcega‐González¹,

Garza-Cervantes²,

Vázquez-Rodríguez³

et al. 2018

IJN

140

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IntroductionOne of the main issues in the medical field and clinical practice is the development of novel and effective treatments against infections caused by antibiotic-resistant bacteria. One avenue that has been approached to develop effective antimicrobials is the use of silver nanoparticles (Ag-NPs), since they have been found to exhibit an efficient and wide spectrum of antimicrobial properties. Among the main drawbacks of using Ag-NPs are their potential cytotoxicity against eukaryotic cells and the latent environmental toxicity of their synthesis methods. Therefore, diverse green synthesis methods, which involve the use of environmentally friendly plant extracts as reductive and capping agents, have become attractive to synthesize Ag-NPs that exhibit antimicrobial effects against resistant bacteria at concentrations below toxicity thresholds for eukaryotic cells.PurposeIn this study, we report a green one-pot synthesis method that uses Acacia rigidula extract as a reducing and capping agent, to produce Ag-NPs with applications as therapeutic agents to treat infections in vivo.Materials and methodsThe Ag-NPs were characterized using transmission electron microscopy (TEM), high-resolution TEM, selected area electron diffraction, energy-dispersive spectroscopy, ultraviolet–visible, and Fourier transform infrared.ResultsWe show that Ag-NPs are spherical with a narrow size distribution. The Ag-NPs show antimicrobial activities in vitro against Gram-negative (Escherichia coli, Pseudomonas aeruginosa, and a clinical multidrug-resistant strain of P. aeruginosa) and Gram-positive (Bacillus subtilis) bacteria. Moreover, antimicrobial effects of the Ag-NPs, against a resistant P. aeruginosa clinical strain, were tested in a murine skin infection model. The results demonstrate that the Ag-NPs reported in this work are capable of eradicating pathogenic resistant bacteria in an infection in vivo. In addition, skin, liver, and kidney damage profiles were monitored in the murine infection model, and the results demonstrate that Ag-NPs can be used safely as therapeutic agents in animal models.ConclusionTogether, these results suggest the potential use of Ag-NPs, synthesized by green chemistry methods, as therapeutic agents against infections caused by resistant and nonresistant strains.

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“…1,2 Recently, the low UA level in the serum and/or cerebrospinal fluid has been proved to be a key biomarker of Parkinson disease. 3 In the past years, some analytical methods have been developed for UA detection, including highperformance liquid chromatography (HPLC), 4 chemiluminescence, 5 electrochemistry, [6][7][8] enzymatic assay, 9,10 fluorescence, 11,12 surface plasmon resonance, 3 and photoelectrochemistry. 11,12 Despite many advances in UA detection, many of these methods still do not meet the growing demand for more sensitive and selective detection of UA.…”

Section: Introductionmentioning

confidence: 99%

Modification of nanocrystalline TiO₂ coatings with molecularly imprinted TiO₂ for uric acid recognition

Zhang¹,

Xiao

Qin

et al. 2018

J of Molecular Recognition

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Combining the surface modification and molecular imprinting technique, a novel piezoelectric sensing platform with excellent molecular recognition capability was established for the detection of uric acid (UA) based on the immobilization of TiO2 nanoparticles onto quartz crystal microbalance (QCM) electrode and modification of molecularly imprinted TiO2 (MIT) layer on TiO2 nanoparticles. The performance of the fabricated biosensor was evaluated, and the results indicated that the biosensor exhibited high sensitivity in UA detection, with a linear range from 0.04 to 45 μM and a limit of detection of 0.01 μM. Moreover, the biosensor presented high selectivity towards UA in comparison with other interferents. The analytical application of the UA biosensor confirmed the feasibility of UA detection in urine sample.

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Photochemical one-pot synthesis of reduced graphene oxide/Prussian blue nanocomposite for simultaneous electrochemical detection of ascorbic acid, dopamine, and uric acid

Cited by 100 publications

References 55 publications

Bio‐reduced GO /Pd nanocomposite as an efficient and green synthesized catalyst for hydrogen evolution reaction

Bio‐reduced GO /Pd nanocomposite as an efficient and green synthesized catalyst for hydrogen evolution reaction

In vivo antimicrobial activity of silver nanoparticles produced via a green chemistry synthesis using <em>Acacia rigidula</em> as a reducing and capping agent

Modification of nanocrystalline TiO₂ coatings with molecularly imprinted TiO₂ for uric acid recognition

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Photochemical one-pot synthesis of reduced graphene oxide/Prussian blue nanocomposite for simultaneous electrochemical detection of ascorbic acid, dopamine, and uric acid

Cited by 100 publications

References 55 publications

Bio‐reduced GO /Pd nanocomposite as an efficient and green synthesized catalyst for hydrogen evolution reaction

Bio‐reduced GO /Pd nanocomposite as an efficient and green synthesized catalyst for hydrogen evolution reaction

In vivo antimicrobial activity of silver nanoparticles produced via a green chemistry synthesis using <em>Acacia rigidula</em> as a reducing and capping agent

Modification of nanocrystalline TiO2 coatings with molecularly imprinted TiO2 for uric acid recognition

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Modification of nanocrystalline TiO₂ coatings with molecularly imprinted TiO₂ for uric acid recognition