2,3-diaminopyridine functionalized reduced graphene oxide-supported palladium nanoparticles with high activity for electrocatalytic oxygen reduction reaction

Yasmin, Sabina; Joo, Yuri; Jeon, Seungwon

doi:10.1016/j.apsusc.2017.02.130

Cited by 24 publications

(15 citation statements)

References 56 publications

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Section: Introductionmentioning

confidence: 99%

“…27 GO is one of the classical derivatives of graphene, which is an extension of the carbon nanomaterial produced by oxidation of the graphite layer. 28,29 It has attracted unique scientific approaches in the field of electronics, 30 photonics, 31 sensors, 32−34 energy storage, 35 and adsorption. 36 The high theoretical surface area, abundance of surface factional groups, and high mechanical strength and conductivity make it a favorable adsorbent for water treatment.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, graphene and GO-based materials have gained huge interest as a potential adsorbent for the removal of different types of antibiotics from water and waste water . GO is one of the classical derivatives of graphene, which is an extension of the carbon nanomaterial produced by oxidation of the graphite layer. , It has attracted unique scientific approaches in the field of electronics, photonics, sensors, − energy storage, and adsorption …”

Section: Introductionmentioning

confidence: 99%

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A Fast Adsorption of Azithromycin on Waste-Product-Derived Graphene Oxide Induced by H-Bonding and Electrostatic Interactions

et al. 2022

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Graphene oxide (GO) was prepared from the graphite electrode of waste dry cells, and the application of the prepared GO as a potential adsorbent for rapid and effective removal of an antibiotic, azithromycin (AZM), has been investigated. The synthesis process of GO is very simple, cost-effective, and eco-friendly. As-prepared GO is characterized by field-emission scanning electron microscopy, energy-dispersive X-ray, transmission electron microscopy, X-ray diffractometry, Fourier transform infrared spectroscopy, elemental analysis, Brunauer–Emmett–Teller sorptometry, and zeta potential analysis. The obtained GO has been employed for removal of the widely used AZM antibiotic from an aqueous solution. The quantitative analysis of AZM before and after adsorption has been carried out by liquid chromatography tandem mass spectrometry. The adsorption of AZM by GO was performed in a batch of experiments where the effects of adsorbent (GO) dose, solution pH, temperature, and contact time were investigated. Under optimum conditions (pH = 7.0, contact time = 15 min, and adsorbent dose = 0.25 g/L), 98.8% AZM was removed from the aqueous solution. The rapid and effective removal of AZM was significantly controlled by the electrostatic attractions and hydrogen bonding on the surface of GO. Adsorption isotherms of AZM onto GO were fitted well with the Freundlich isotherm model, while the kinetic data were fitted perfectly with the pseudo-second order. Therefore, the simple, cost-effective, and eco-friendly synthesis of GO from waste material could be applicable to fabricate an effective and promising low-cost adsorbent for removal of AZM from aqueous media.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Fast Adsorption of Azithromycin on Waste-Product-Derived Graphene Oxide Induced by H-Bonding and Electrostatic Interactions

et al. 2022

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“…By this approach, composites of Pd‐NPs on rGO support were successfully synthesized . At the same time, the thermal annealing method was rarely employed toward synthesis of Pd‐NPs ,,. We think that this method deserves more attention due to its simplicity, scalability, and ability to control and manipulate the size of as‐made NPs in a broad range.…”

Section: Introductionmentioning

confidence: 99%

The Mechanistic Details for the Growth of Palladium Nanoparticles on Graphene Oxide Support

et al. 2017

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Composite materials, comprising metal nanoparticles (NP) on a structural support have gained significant attention as novel systems for catalysis and energy conversion. Despite the importance of these materials for practical applications, the mechanism of the NPs formation remains elusive. Here, we investigate the seeding and the growth of Pd‐NPs on graphene oxide (GO) support in the two‐step process: impregnation and annealing. During the impregnation step, Pd2+ uniformly covers GO surface due to the strong chemical bonding with the oxygen functional groups. During the thermal annealing step, the growth of Pd‐NPs occurs via the radial in‐plane migration of Pd‐NPs along the GO surface to incorporate new Pd atoms in a way, similar to the snowball effect. The exact migration path depends on the annealing temperature, and on the Pd/GO ratio. The same two factors are responsible for the size‐distribution and the lateral density of as‐grown Pd‐NPs. At high temperatures, diffusion of the growing Pd‐NPs across the GO layers complicates the picture. The annealing temperature also influences the crystallinity, or the degree of porosity of the graphenic support. Below 500°C, carbon planes remain almost intact, while above 700°C, GO decomposes into highly porous material.

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“…6 However, limited supply, high price, slow electrode kinetics and poor poison tolerance of platinum based catalysts have greatly hindered the large-scale commercialization of DMFCs. 3,7,8 In this regard, it is necessary to develop a cheap, non-platinum based catalyst instead of a platinum based catalyst that can show higher catalytic activity towards the methanol oxidation reaction (MOR) with strong anti-poisoning ability.…”

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confidence: 99%

The Effect of Reducing Agent for Synthesizing Palladium Nanoparticle on Carbon Nanotube Support and Its Superior Catalytic Activity towards Methanol Oxidation Reaction

et al. 2023

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We have synthesized carbon nanotube supported palladium nanoparticles (CNT-Pd) by using different reducing agents such as sodium borohydride (SBH), hydrazine monohydrate (HY), and ascorbic acid (AA) for the methanol oxidation reaction (MOR) in alkaline media. The elemental and morphological properties of all catalysts are verified by high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy, and X-ray diffraction. From the HRTEM images, it is found that CNT-Pd reduced by sodium borohydride CNT-Pd (SBH) exhibited a narrow size distribution of Pd nanoparticles (PdNPs) with an average size of 3.15 nm. The role of the reducing agents (SBH, HY, and AA) is investigated by applying them as anode catalysts for the methanol oxidation reaction (MOR) and it is found that the reducing agent remarkably affected the electrochemical activities. CNT-Pd (SBH) catalysts show the superior catalytic activity and durability towards MOR among all catalysts, which may be due to the Pd NPs in CNT-Pd (SBH) having a perfect crystal structure with a narrow size distribution.

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2,3-diaminopyridine functionalized reduced graphene oxide-supported palladium nanoparticles with high activity for electrocatalytic oxygen reduction reaction

Cited by 24 publications

References 56 publications

A Fast Adsorption of Azithromycin on Waste-Product-Derived Graphene Oxide Induced by H-Bonding and Electrostatic Interactions

A Fast Adsorption of Azithromycin on Waste-Product-Derived Graphene Oxide Induced by H-Bonding and Electrostatic Interactions

The Mechanistic Details for the Growth of Palladium Nanoparticles on Graphene Oxide Support

The Effect of Reducing Agent for Synthesizing Palladium Nanoparticle on Carbon Nanotube Support and Its Superior Catalytic Activity towards Methanol Oxidation Reaction

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