Direct, one-step synthesis of molybdenum blue using an electrochemical method, and characterization studies

Koyun, Ozge; Gördük, Semih; Arvas, Melih Beşir; Şahin, Yücel

doi:10.1016/j.synthmet.2017.09.009

Cited by 34 publications

(23 citation statements)

References 22 publications

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“…Because the conductivity of graphene layers higher than that of PGE, Rct values were lower in C‐GPGEs and Cl‐GO than PGE . R SEI values were also lower in modified electrodes than PGE indicating formation of more conductive graphene layers on the PGE surface during the modification process (Table ) . The capacitances of modified electrodes were increased with the modification of chlorine doping and forming graphene according to the CPE1 and CPE2 which were higher in Cl‐GPGEs and Cl‐GO than PGE .…”

Section: Resultsmentioning

confidence: 99%

“…Rct values, which were caused from Faradaic reactions, were determined as 0.421, 0.797, 0.659, 0.604, and 4.760 Ω for Cl‐GPGE1, Cl‐GPGE2, Cl‐GPGE3, Cl‐GO, and PGE, respectively (Table ). Because the conductivity of graphene layers higher than that of PGE, Rct values were lower in C‐GPGEs and Cl‐GO than PGE . R SEI values were also lower in modified electrodes than PGE indicating formation of more conductive graphene layers on the PGE surface during the modification process (Table ) .…”

Section: Resultsmentioning

confidence: 99%

“…Then, PGE was modified in 5.0 M of perchloric acid solutions in the potential ranges from−1.0 V to +1.90 V, from +0.80 V to +1.90 V, and from +1.25 V to +1.90 V versus SCE with 15 cycles at a 50 mV/s scan rate at room temperature (25°C) by cyclic voltammetry and was called Cl‐GPGE1, Cl‐GPGE2, and Cl‐GPGE3, respectively. The working electrodes were washed with deionized water to remove impurities and dried at room temperature before the electrochemical experiments …”

Section: Methodsmentioning

confidence: 99%

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Novel chlorine doped graphene electrodes for positive electrodes of a vanadium redox flow battery

2018

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Summary One‐step electrochemical preparation of chlorine doped graphene coated electrodes was succeed by cyclic voltammetric method for the first time in the literature in this work. Because hetero atom and oxygen functional groups doped graphene‐based electrodes can improve the electrochemical performance of the battery with formed defects sides on the main structure of the electrodes, the modification of graphene‐based electrodes by chlorine and oxygen including functional groups such as ―Cl, ―ClO4, ―ClO3, ―OH, and ―C═O have been done by arranging of scanned potential in cyclic voltammetric treatment. The structural features of chlorine doped graphene electrodes were analyzed by scanning electron microscopic analysis. Chemical structures of the surface of the electrodes were elucidated by X‐ray photoelectron spectroscopy. Raman analyses were carried out to determine the optical properties of the electrodes. Chlorine doped graphene‐based electrodes were also used as positive electrode component of a vanadium redox battery for the first time in the literature. The electrodes showed great electrochemical performance as positive electrode materials of the battery.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Novel chlorine doped graphene electrodes for positive electrodes of a vanadium redox flow battery

2018

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“…One of the most important factors affecting the practical use of high-performance electrochemical sensors and biosensors is selectivity [58,59]. The interaction often occurs under physiological conditions created by the presence of ascorbic acid (AA, 1 mM), uric acid (UA, 1 mM), glucose (G, 1 mM), and dopamine (DA, 1 mM) [18].…”

Section: Interference Studymentioning

confidence: 99%

“…The electrochemical performance showed that the TBA + /PGE exhibited remarkable electrocatalytic activity against NADH in human blood serums and this demonstrate that the novel TBA + /PGE can be used for electrochemical sensor and biosensor applications. All of the electrochemical measurements were carried out with a three-electrode system using the pencil graphite electrode (PGE) (Tombow HB, 0.5 mm) as the working electrode, the Ag/AgCl electrode as the reference electrode, and the Pt wire as the counter electrode [38].…”

Section: Introductionmentioning

confidence: 99%

Sensitive Electrochemical Determination of NADH Using an Electrode Fabricated by Intercalation of Tetrabutylammonium Ions Into Graphite Electrode

Gördük

2021

Electroanalysis

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In this study, we present a strategy for the specific electrochemical detection of NADH in human blood serums using modified electrode fabricated by intercalation of tetrabutylammonium ions (TBA+) into pencil graphite electrode (TBA+/PGE). In order to implement this protocol, a modification process in the potential range (−0.2) to (−2.75) V was performed in DMSO containing 0.1 M TBAP by CV method. The characterization processes of the prepared sensor were carried out using CV, EIS, FT‐IR, XPS, and SEM methods. The electrode fabricated by intercalation of TBA+ was found to be able to analyze NADH at +0.32 V applied potential by the amperometric method. The LOD was detected as 0.46 μM. The analysis results of human blood serums which are taken from healthy individuals show that TBA+/PGE can be used for real samples. The results indicated that TBA+/PGE can be easily fabricated by one‐step and one‐pot electrochemical method and TBA+/PGE can be used as a potential sensor for the NADH determination.

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Molybdenum Blues with Tunable Light Absorption Synthesized by Femtosecond Laser Irradiation of Molybdenum Trioxide in Water/Ethanol Mixtures

Ayub

Chang

et al. 2022

Advanced Optical Materials

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Molybdenum blues (MBs) have attracted increasing attention due to their tunable structures and properties, which make them applicable in numerous fields. In this work, a novel strategy to synthesize MB nanorings by irradiating MoO3 suspended in water/ethanol mixtures with intense femtosecond laser pulses is demonstrated. It is found that the MoO3 can be dissolved in the water during laser irradiation to form molybdic acid, which provides an acidic environment for the formation of MB. Concentrations of ethanol as low as 1% result in the formation of MB and by adjusting the concentration of ethanol in the solvent, the absorption band can be tuned due to the modification of MoVOMoVI entities. The MB synthesized in 30% ethanol appears the darkest blue and assembly of vesicles 115 nm in size is observed. At high concentrations of ethanol (>70%), HXMoO3 and MoO3‐X are preferentially formed instead of MB. The photothermal conversion efficiency of the MBs synthesized in 1% and 30% ethanol is above 40%.

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Direct, one-step synthesis of molybdenum blue using an electrochemical method, and characterization studies

Cited by 34 publications

References 22 publications

Novel chlorine doped graphene electrodes for positive electrodes of a vanadium redox flow battery

Novel chlorine doped graphene electrodes for positive electrodes of a vanadium redox flow battery

Sensitive Electrochemical Determination of NADH Using an Electrode Fabricated by Intercalation of Tetrabutylammonium Ions Into Graphite Electrode

Molybdenum Blues with Tunable Light Absorption Synthesized by Femtosecond Laser Irradiation of Molybdenum Trioxide in Water/Ethanol Mixtures

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