High performance Fe and N-codoped graphene quantum dot supported Pd3Co catalyst with synergistically improved oxygen reduction activity and great methanol tolerance

Faraji, Monireh; Derakhshi, Pirouz; Tahvildari, Kambiz; Yousefian, Z.

doi:10.1016/j.solidstatesciences.2018.07.012

Cited by 16 publications

(9 citation statements)

References 56 publications

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“…The experimental results indicated that 0.02 g of ammonium ferric citrate yielded CDs with the best catalytic effect. Compared with reported procedures for the preparation of CD Fe ( Supplementary Table S1 ) ( Faraji et al, 2018 ; Yue et al, 2019 ; Zhang et al, 2019 ; Yadav et al, 2020 ), our procedure is simpler and requires a shorter hydrothermal reaction time. In addition, only one reagent, ammonium ferric citrate, was used to prepare CD FeN .…”

Section: Methodsmentioning

confidence: 99%

Aptamer Turn-On SERS/RRS/Fluorescence Tri-mode Platform for Ultra-trace Urea Determination Using Fe/N-Doped Carbon Dots

Liang

et al. 2021

Front. Chem.

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Sensitive and selective methods for the determination of urea in samples such as dairy products are important for quality control and health applications. Using ammonium ferric citrate as a precursor, Fe/N-codoped carbon dots (CDFeN) were prepared by a hydrothermal procedure and characterized in detail. CDFeN strongly catalyzes the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) by H2O2 to turn on an indicator molecular reaction, forming an oxidized tetramethylbenzidine (TMBox) probe with surface-enhanced Raman scattering, resonance Rayleigh scattering, and fluorescence (SERS, RRS, and FL) signals at 1,598 cm−1, 370 nm, and 405 nm, respectively. The urea aptamer (Apt) can turn off the indicator reaction to reduce the tri-signals, and the addition of urea turns on the indicator reaction to linearly enhance the SERS/RRS/FL intensity. Thus, a novel Apt turn-on tri-mode method was developed for the assay determination of ultra-trace urea with high sensitivity, good selectivity, and accuracy. Trace adenosine triphosphate and estradiol can also be determined by the Apt-CDFeN catalytic analytical platform.

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Section: Methodsmentioning

confidence: 99%

Aptamer Turn-On SERS/RRS/Fluorescence Tri-mode Platform for Ultra-trace Urea Determination Using Fe/N-Doped Carbon Dots

Liang

et al. 2021

Front. Chem.

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“…S8 †), indicating that N is most definitely integrated into the graphene structure. 61,62 The samples were subjected to electron paramagnetic resonance (EPR) characterization to investigate the surface defects. As depicted in Fig.…”

Section: Msde Papermentioning

confidence: 99%

3D interconnected N-doped graphene architecture encapsulated with oxygen-deficient TiO₂ nanotube array: synergism of oxygen vacancy and carbon materials on enhanced sulfur conversion and catalytic activity of TiO₂ nanotube array in Li–S batteries

Abdulrazzaq

2024

Mol. Syst. Des. Eng.

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“…Faraji et al 184 prepared non‐Pt Pd‐Co bimetallic nanocatalyst‐doped GQD through hydrothermal and impregnation method. The Pd3Co/Fe‐N‐GQD catalyst with 10 wt% loading show equivalent performance to commercial Pt/C (ETEK, 20 wt%) in terms of methanol tolerance and durability.…”

Section: Graphene Dots In Fuel Cellmentioning

confidence: 99%

“…The co-doped of the heteroatom in GQDs shows the best electrocatalytic activity which attributed to the N C or C S C bonding in metal-free N, S-GQDs. Faraji et al 184 prepared non-Pt Pd-Co bimetallic nanocatalyst-doped GQD through hydrothermal and impregnation method. The Pd3Co/Fe-N-GQD catalyst with 10 wt% loading show equivalent performance to commercial Pt/C (ETEK, 20 wt%) in terms of methanol tolerance and durability.…”

Section: Graphene Dots In Fuel Cellmentioning

confidence: 99%

Carbon and graphene quantum dots in fuel cell application: An overview

2020

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Summary Carbon quantum dots (CQD) and graphene quantum dots (GQDs) have been mentioned frequently. They have been selected in recent studies as they have unique and remarkable potential, especially in electrical, optical, and optoelectrical properties. CQD and GQDs have very high chemical and physical stability due to inherent inert carbon material, thus newly recognized as a kind of quantum dots material. Its environmentally friendly, non‐toxic, and naturally inactive nature is also a major attraction for scientists around the world. In this work, CQD and GQDs production methods are discussed in detail, including soft‐template method, hydrothermal method, microwave‐assisted hydrothermal (MAH) method, metal‐catalyzed method, liquid exfoliation method, electron beam lithography method, and others. Additive material has been introduced in CQD and GQDs to increase the ability and performance of CQD and GQDs such as nitrogen, sulfur, chlorine, fluorine, and potassium. In particular, the presence of additive material in CQD and GQDs shows an advantage in terms of energy level, which is very good at achieving specific requirements in properties such as optical, electrical, and optoelectrical. In addition, the existence of functional groups consisting of heteroatoms such as oxygen, nitrogen, sulfur, phosphorus, boron, and so on of zero‐dimensional carbon materials in providing an overabundance of the active electrochemical site for the reaction. The product of CQD and GQDs has various shapes and sizes influenced by several parameters such as synthesis temperature, growth time, source concentration, catalyst, and so on. The application of CQDs and GQDs composites in fuel cells has been clearly and scientifically stated as it has enhanced the performance of fuel cell technology.

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High performance Fe and N-codoped graphene quantum dot supported Pd3Co catalyst with synergistically improved oxygen reduction activity and great methanol tolerance

Cited by 16 publications

References 56 publications

Aptamer Turn-On SERS/RRS/Fluorescence Tri-mode Platform for Ultra-trace Urea Determination Using Fe/N-Doped Carbon Dots

Aptamer Turn-On SERS/RRS/Fluorescence Tri-mode Platform for Ultra-trace Urea Determination Using Fe/N-Doped Carbon Dots

3D interconnected N-doped graphene architecture encapsulated with oxygen-deficient TiO₂ nanotube array: synergism of oxygen vacancy and carbon materials on enhanced sulfur conversion and catalytic activity of TiO₂ nanotube array in Li–S batteries

Carbon and graphene quantum dots in fuel cell application: An overview

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High performance Fe and N-codoped graphene quantum dot supported Pd3Co catalyst with synergistically improved oxygen reduction activity and great methanol tolerance

Cited by 16 publications

References 56 publications

Aptamer Turn-On SERS/RRS/Fluorescence Tri-mode Platform for Ultra-trace Urea Determination Using Fe/N-Doped Carbon Dots

Aptamer Turn-On SERS/RRS/Fluorescence Tri-mode Platform for Ultra-trace Urea Determination Using Fe/N-Doped Carbon Dots

3D interconnected N-doped graphene architecture encapsulated with oxygen-deficient TiO2 nanotube array: synergism of oxygen vacancy and carbon materials on enhanced sulfur conversion and catalytic activity of TiO2 nanotube array in Li–S batteries

Carbon and graphene quantum dots in fuel cell application: An overview

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3D interconnected N-doped graphene architecture encapsulated with oxygen-deficient TiO₂ nanotube array: synergism of oxygen vacancy and carbon materials on enhanced sulfur conversion and catalytic activity of TiO₂ nanotube array in Li–S batteries