Nitrogen doped carbon nano-onions as efficient and robust electrocatalysts for oxygen reduction reactions

Zhang, Yan; Reed, Allen; Kim, Doo Young

doi:10.1016/j.cap.2018.02.001

Cited by 34 publications

(14 citation statements)

References 29 publications

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“…These doped nanostructures exhibited electrochemical characteristics comparable to commercial Pt/C catalysts. [143] Hollow NÀ CNOs synthesized in the presence of collagen exhibited outstanding ORR electrocatalytic activity with low onset potential, high current density, superior methanol crossover immunity and better durability than the benchmark Pt/C catalyst in alkaline medium. [144] The high conductivity of CNOs at the metallic level allows for their application in electronic molecular systems.…”

Section: Electrochemical Electrocatalytic and Electronic Applicationsmentioning

confidence: 98%

“…For this purpose, doping CNOs with N, B, F, O and S was performed. [138][139][140][141][142][143][144] Boron-doped CNOs (B-CNOs) were obtained using an in situ method during electron irradiation of a graphitic material in a TEM and via chemical vapour deposition of BCl 3 and C 6 H 6 . [145,146] The direct preparation of CNOs via thermal annealing of NDs using a boron source (H 3 BO 3 or amorphous powder of boron) or nitrogen was recently reported.…”

Section: Doping Of Cnos By Heteroatomsmentioning

confidence: 99%

“…NÀ CNOs were also synthesized via post-synthetic treatment. [143] The NÀ CNOs were prepared by chemical oxidation of nanodiamond-derived CNOs, followed by thermal annealing with urea under the flow of argon gas. These NÀ CNOs exhibited electrochemical characteristics comparable to commercial Pt/C catalysts.…”

Section: Doping Of Cnos By Heteroatomsmentioning

confidence: 99%

“…[123] Pristine or doped CNOs were also applied as catalysts during the exothermic oxidative dehydrogenation of ethylenebenzene to styrene, [13,187] and epoxidation reactions. [143,188,189] Boron-and phosphorus-doped CNOs were also used as catalysts for ORR and organic compounds. [149,153,190] Boron-doped catalysts were shown to have good stability under recycling tests in nitrobenzene reduction.…”

Section: Electrochemical Electrocatalytic and Electronic Applicationsmentioning

confidence: 99%

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Carbon Nano‐Onions: A Review of Recent Progress in Synthesis and Applications

Płońska‐Brzezińska

2019

ChemNanoMat

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This article presents a short review of the knowledge concerning multi‐layered fullerenes, also known as onion‐like carbons or carbon nano‐onions. In this article, the most important literature in this area is reviewed in a condensed way that presents these nanostructures, their unusual physical and chemical properties and their potential uses. This article focuses mainly on biomedical applications and areas where the electrochemical and electrocatalytic properties of these materials are applied. Currently, this field of research seems promising, and interest in this area is growing.

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Section: Electrochemical Electrocatalytic and Electronic Applicationsmentioning

confidence: 98%

Section: Doping Of Cnos By Heteroatomsmentioning

confidence: 99%

Section: Doping Of Cnos By Heteroatomsmentioning

confidence: 99%

Section: Electrochemical Electrocatalytic and Electronic Applicationsmentioning

confidence: 99%

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Carbon Nano‐Onions: A Review of Recent Progress in Synthesis and Applications

Płońska‐Brzezińska

2019

ChemNanoMat

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“…The different activities of both series result from the presence of various acidic sites and/or their different distributions. 84 , 85 …”

Section: Resultsmentioning

confidence: 99%

Linking the Defective Structure of Boron-Doped Carbon Nano-Onions with Their Catalytic Properties: Experimental and Theoretical Studies

Szymański

Suzuki

Ohba

et al. 2021

ACS Appl. Mater. Interfaces

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Defects are widely present in nanomaterials, and they are recognized as the active sites that tune surface properties in the local region for catalysis. Recently, the theory linking defect structures and catalytic properties of nanocatalysts has been most commonly described. In this study, we prepared boron-doped carbon nano-onions (B-CNOs) by applying an annealing treatment of ultradispersed nanodiamond particles and amorphous boron. These experimental conditions guarantee doping of CNOs with boron atoms in the entire carbon nanostructure, thereby ensuring structural homogeneity. In our research, we discuss the correlations between defective structures of B-CNOs with their catalytic properties toward SO 2 and tert -butanol dehydration. We show that there is a close relationship between the catalytic properties of the B-CNOs and the experimental conditions for their formation. It is not only the mass of the substrates used for the formation of B-CNOs that is crucial, that is, the mass ratio of NDs to amorphous B, but also the process, including temperature and gas atmosphere. As it was expected, all B-CNOs demonstrated significant catalytic activity in HSO 3 – oxidation. However, the subsequent annealing in an air atmosphere diminished their catalytic activity. Unfortunately, no direct relationship between the catalytic activity and the presence of heteroatoms on the B-CNO surface was observed. There was a linear dependence between catalytic activity and Raman reactivity factors for each of the B-CNO materials. In contrast to SO 2 oxidation, the B-CNO-a samples showed higher catalytic activity in tert -butanol dehydration due to the presence of Brønsted and Lewis acid sites. The occurence of three types of boron-Lewis sites differing in electron donor properties was confirmed using quantitative infrared spectroscopic measurements of pyridine adsorption.

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Spherical Onion‐Like Carbons

Bobrowska

Płońska‐Brzezińska

2020

Synthesis and Applications of Nanocarbons

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Nitrogen doped carbon nano-onions as efficient and robust electrocatalysts for oxygen reduction reactions

Cited by 34 publications

References 29 publications

Carbon Nano‐Onions: A Review of Recent Progress in Synthesis and Applications

Carbon Nano‐Onions: A Review of Recent Progress in Synthesis and Applications

Linking the Defective Structure of Boron-Doped Carbon Nano-Onions with Their Catalytic Properties: Experimental and Theoretical Studies

Spherical Onion‐Like Carbons

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