The influence of carbon surface chemistry on supported palladium nanoparticles in heterogeneous reactions

Ding, Yuxiao; Zhang, Liyun; Wu, Kuang‐Hsu; Feng, Zhenbao; Gao, Qiang; Zhang, Bingsen

doi:10.1016/j.jcis.2016.07.018

Cited by 18 publications

(11 citation statements)

References 57 publications

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“…Herein, the amount of Pd in the carbon network is low (~2.3%) allowing to avoid the particle growth and agglomeration. Moreover, the carbon surface chemistry, i.e., the nature and the amount of functional groups may impact the size and the dispersion of the particles . Such functional groups improve the wetting behaviour of carbon with the metal salt and may act as active sites to anchor the metal nanoparticles favouring their dispersion.…”

Section: Resultsmentioning

confidence: 97%

Mesoporous carbon supported ultrasmall palladium particles as highly active catalyst for Suzuki‐Miyaura reaction

Enneiymy

Drian

Ghimbeu

et al. 2019

Applied Organom Chemis

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A fast and efficient eco‐friendly two‐step preparation of a palladium‐containing mesoporous carbon catalyst (C1) from green and readily available carbon precursors (phloroglucinol and glyoxal), a porogen template (pluronic F‐127) and PdCl2 is described. Catalyst C1 contains ultra‐small Pd nanoparticles (1.2 nm) uniformly dispersed in the carbon network and shows an outstanding activity for Suzuki‐Miyaura reactions in pure water: extremely low amounts of palladium (10 μequiv. in most cases) are sufficient to afford almost palladium‐free products (containing <0.25 ppm of precious metal without further purification steps).

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Section: Resultsmentioning

confidence: 97%

Mesoporous carbon supported ultrasmall palladium particles as highly active catalyst for Suzuki‐Miyaura reaction

Enneiymy

Drian

Ghimbeu

et al. 2019

Applied Organom Chemis

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show abstract

“…The carbonaceous materials still experience a condensation process when the annealing temperature is lower than 800 °C. The condensation leads to obvious weight loss forming connected five‐ or six‐membered rings with localized π structure [15b,18] . When the annealing temperature is higher than 800 °C, the condensation process is almost finished.…”

Section: Resultsmentioning

confidence: 99%

Tuning of Reciprocal Carbon‐Electrode Properties for an Optimized Hydrogen Evolution.

Ding

Zhang

et al. 2021

ChemSusChem

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Closing the material cycle for harmful and rare resources is a key criterion for sustainable and green energy systems. The concept of using scalable biomass‐derived carbon electrodes to produce hydrogen from water was proposed here, satisfying the need for sustainability in the field of chemical energy conversion. The carbon electrodes exhibited not only water oxidation activity but also a strong self‐oxidation when being used as anode for water splitting. The carbon oxidation, which is more energy‐favorable, was intentionally allowed to occur for an improvement of the total current, thus enhancing the hydrogen production on the cathode side. By introducing different earth‐abundant metals, the electrode could be well adjusted to achieve an optimized water/carbon oxidation ratio and an appreciable reactivity for practical applications. This promising methodology may become a very large driver for carbon chemistry when waste organic materials or biomass can be converted using its intrinsic energy content of carbon. Such a process could open a safe path for sub‐zero CO2 emission control. The concept of how and which parameter of a carbon‐based electrode can be optimized was presented and discussed in this paper.

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“…proposed that defects on carbon may be true anchoring sites for Pt single atoms, in addition to the previously proposed N‐doped sites . Functional groups on carbon are also favorable for the dispersion of the supported catalysts . We also believe that nitrogen doping is helpful for the stabilization of the single atom.…”

Section: Synthesis Methods For Supported Single Atomsmentioning

confidence: 90%

“…[94] Func- tional groups on carbon are also favorable for the dispersion of the supported catalysts. [95] We also believe that nitrogen doping is helpful for the stabilization of the single atom. However, except that, defects are also responsible for the formation of the single atoms considering the truth that on nitrogen-free carbon, single dispersed metal sites can also be observed.…”

Section: Pyrolysis To Form Carbon-based Catalystmentioning

confidence: 97%

The Role of Supported Atomically Distributed Metal Species in Electrochemistry and How to Create Them

2019

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Supported atomically distributed metal species are extensively applied as catalysts to exceed the properties of their bulk analogues. Their electronic structures can be easily tuned by neighboring support atoms or ligands to control their activities for different reactions. The high accessibility and therefore almost 100 % reactivity of the highly distributed active sites provide new opportunities for electrochemical applications that were previously only suitable for noble metals. Although a lot of work has been done in this area, the demand for large‐scale applications and, therefore, also large‐scale production is still far from sufficient. In this Review, we selected some recent publications to show the current state of applications of dispersed single‐atom catalysts in the oxygen reduction/evolution reaction and hydrogen evolution reaction, with a focus on their mechanisms in reactions, the underlying challenges, and synthesis methods. A further discussion on how the electrocatalytic performance of the supported single atom catalysts can be tailored to meet the requirements of large‐scale applications is also proposed.

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The influence of carbon surface chemistry on supported palladium nanoparticles in heterogeneous reactions

Cited by 18 publications

References 57 publications

Mesoporous carbon supported ultrasmall palladium particles as highly active catalyst for Suzuki‐Miyaura reaction

Mesoporous carbon supported ultrasmall palladium particles as highly active catalyst for Suzuki‐Miyaura reaction

Tuning of Reciprocal Carbon‐Electrode Properties for an Optimized Hydrogen Evolution.

The Role of Supported Atomically Distributed Metal Species in Electrochemistry and How to Create Them

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