Zero waste, single step methods of fabrication of reduced graphene oxide decorated with gold nanoparticles

Wojnicki, Marek; Michorczyk, Beata; Wojtaszek, Konrad; Kutyła, Dawid; Kołczyk-Siedlecka, Karolina; Małecki, S.; Wrzesińska, Angelika; Kozanecki, Marcin; Kwolek, Przemysław; Gajewska, Marta; Socha, Robert P.; Csapó, Edit; Escribà‐Gelonch, Marc; Hessel, Volker

doi:10.1016/j.susmat.2022.e00387

Cited by 2 publications

(2 citation statements)

References 93 publications

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“…Wojnicki et al synthesized Au/rGO. They first dissolved metallic gold in aqua regia to obtain the Au(III) chloride complex [ 34 ]. A Magnum II (Ertec, Poland) 600 W microwave-heated digestion system was used to obtain Au/rGO.…”

Section: Methods Of Synthesis Nps@go Nanocompositesmentioning

confidence: 99%

Noble Metals Functionalized on Graphene Oxide Obtained by Different Methods—New Catalytic Materials

et al. 2023

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In recent years, research has focused on developing materials exhibiting outstanding mechanical, electrical, thermal, catalytic, magnetic and optical properties such as graphene/polymer, graphene/metal nanoparticles and graphene/ceramic nanocomposites. Two-dimensional sp2 hybridized graphene has become a material of choice in research due to the excellent properties it displays electrically, thermally, optically and mechanically. Noble nanomaterials also present special physical and chemical properties and, therefore, they provide model building blocks in modifying nanoscale structures for various applications, ranging from nanomedicine to catalysis and optics. The introduction of noble metal nanoparticles (NPs) (Au, Ag and Pd) into chemically derived graphene is important in opening new avenues for both materials in different fields where they can provide hybrid materials with exceptional performance due to the synergistical result of the specific properties of each of the materials. This review presents the different synthetic procedures for preparing Pt, Ag, Pd and Au NP/graphene oxide (GO) and reduced graphene oxide (rGO) composites.

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Section: Methods Of Synthesis Nps@go Nanocompositesmentioning

confidence: 99%

Noble Metals Functionalized on Graphene Oxide Obtained by Different Methods—New Catalytic Materials

et al. 2023

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“…Due to the small size of deposited nanoparticles on the carbon filter, the best catalytic test for electrochemical reduction/oxidation can be performed for hydrogen evolution in an acidic medium. In previous studies published by Wojnicki et al, it was reported that the size of nanoparticles plays a critical role in the electrochemical activity due to the difference between the nanoparticle diameter and the size of oxidized/reduced organic species. In our study, it was shown that the glucose oxidation process is not effective for nanoparticles with the size lower than 3 nm diameter, what was also confirmed in literature elsewhere .…”

Section: Resultsmentioning

confidence: 99%

One-Step Synthesis of Pt–Pd@ACF Catalyst in the Microreactor System for the Hydrogen Evolution Reaction

Pach,

Zaryczny,

Michałek

et al. 2024

Ind. Eng. Chem. Res.

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Currently, new technologies for catalyst synthesis for the production of green energy are being sought. Platinum-based materials are of particular interest due to their unique catalytic properties. In this work, a one-step synthesis of a bimetallic Pt−Pd@ACF (ACF = activated carbon fibers) catalyst in the microreactor system was demonstrated. For this purpose, a glass microreactor was applied, and synthesized catalysts were analyzed using the following techniques: spectrophotometry, TEM, SEM, DLS, XRD, and MP-AES (microwave plasma atomic emission spectroscopy). The obtained results showed that the process of catalyst deposition on ACF as a catalyst carrier is more efficient in the microreactor system compared to the analogous process carried out in a batch reactor. Moreover, the composition of the catalyst can be slightly changed with the flow rate. It contained 32% of Pt and 68% of Pd for a flow rate of 5 mL/min and 33% of Pt and 67% of Pd for the lowest flow rate, i.e., 1 mL/min. While the amount of catalyst deposited on ACF can be adjusted by using the flow rate in the order from the lowest to the highest. The catalytic properties of the catalyst were tested for the hydrogen evolution reaction (HER). The catalytic performance of the synthesized material was directly related to its amount on the carbon surface. The highest catalytic activity was observed for the catalyst synthesized at a flow rate of 5.0 mL/min, and the registered current for HER achieved −25 mA at a potential of −0.28 V.

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Zero waste, single step methods of fabrication of reduced graphene oxide decorated with gold nanoparticles

Cited by 2 publications

References 93 publications

Noble Metals Functionalized on Graphene Oxide Obtained by Different Methods—New Catalytic Materials

Noble Metals Functionalized on Graphene Oxide Obtained by Different Methods—New Catalytic Materials

One-Step Synthesis of Pt–Pd@ACF Catalyst in the Microreactor System for the Hydrogen Evolution Reaction

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