Pt supported on boron, nitrogen co-doped carbon nanotubes (BNC NTs) for effective methanol electrooxidation

Zhou, Qiuman; Wu, Jian; Pan, Zhanchang; Kong, Xiangjin; Cui, Ziya; Wu, Deyou; Hu, Guanghui

doi:10.1016/j.ijhydene.2020.09.056

Cited by 18 publications

(3 citation statements)

References 23 publications

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“…The sensitivity of the model device can be controlled by changing the concentration of the heteroatoms in the nanotubes. That experiment has entailed a number of works [4,[21][22][23][24][25][26] which dealt with various properties of CNTs containing boron impurity atoms in different concentrations. M. Ramadoss et al [27] reported recently Ni/ Ni 3 Fe incorporation into boron-carbon nanotubes for accelerating oxygen evolution reactions.…”

Section: Scientific Prerequisites For Boron Modification Of Pure Carb...mentioning

confidence: 99%

Carbon nanostructures containing boron impurity atoms: synthesis, physicochemical properties and potential applications

Boroznin¹

2022

MoEM

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Introduction of substitution atoms into carbon nanotubes is an efficient tool of controlling their physicochemical properties which allows one to expand their practical applications. Boron is one of the most promising materials used for the modification of carbon nanotubes. However until now there has been no systematization of research data on the effect of boron impurity atoms on the properties of carbon nanotubes, and this limits potential industrial applications of this nanomaterial. In this work the most efficient currently existing methods of synthesizing carbon nanotubes containing boron impurity atoms have been discussed and the physicochemical properties of the obtained nanomaterials have been analyzed. Furthermore predictions as to their potential application domains have been made on the basis of available theoretical and experimental results. Comparison of the developed technologies has shown that the most efficient synthesis method is the catalytic vapor phase deposition. The mechanical, electronic and chemical properties of boron-carbon nanotubes have also been reviewed. For a more comprehensive analysis of the dependence of the physicochemical properties of carbon nanotubes on the concentration of boron impurity a model experiment has been carried out involving quantum mechanics instruments which has shown a direct correlation between the band gap of the material and the number of boron impurity atoms. The main practical application trends of boron-containing carbon nanotubes have been outlined.

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Section: Scientific Prerequisites For Boron Modification Of Pure Carb...mentioning

confidence: 99%

Carbon nanostructures containing boron impurity atoms: synthesis, physicochemical properties and potential applications

Boroznin¹

2022

MoEM

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“…Carbon-neutral fuels with the characteristics of renewable and low-emission nature have received increasing attention recently, as driven by the rising environmental pollution and energy crises from the usage of fossil fuels. − Among the carbon-neutral fuels, C1 liquid fuel of methanol, with the advantages of low price, high energy density, and plentiful sources, has been employed in energy conversion systems for hydrogen generation or fuel cell techniques. − To realize this sustainable carbon cycle with the interconversion of chemical and electrical energy, high-efficiency and stable catalysts are required to drive the methanol oxidation reaction (MOR). Currently, the noble metal nanomaterials, such as Pd, Rh, and Pt, exhibit good performance in methanol oxidation, while the Pt-based catalysts are still the state-of-the-art anodic catalyst to catalyze the complicated MOR process. − However, the inevitable poisoning effect of CO-poisoning intermediates for these catalysts greatly compromises the electrocatalytic performance. − Therefore, attention has been directed to catalyst development in terms of novel catalyst design and fabrication, catalytic performance boosting, anti-poisoning ability improvement, reducing the noble metal catalyst loading, etc., to promote catalytic efficiency. − …”

Section: Introductionmentioning

confidence: 99%

PtIr Alloy Nanoparticles Anchored on CoSe–NC Nanospheres for Efficient Methanol Oxidation

et al. 2023

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Efficient catalysts are still required for methanol oxidation, which plays an important role in the sustainable carbon cycle. Herein, a novel and efficient catalyst of PtIr alloy nanoparticles deposited on the CoSe–NC support derived from ZIF-67 was developed for methanol electro-oxidation. The well-anchored and dispersed PtIr alloy nanoparticles over the CoSe–NC support imparted a strong electronic interaction between the support and the active metals, and as a result, the as-prepared PtIr/CoSe–NC catalyst showed largely improved catalytic kinetics, stability, and activity for the methanol oxidation reaction. The peak current density of PtIr/CoSe–NC for methanol oxidation was 56.7 mA cm–2, around 2.1 times higher than that of a commercial Pt/C (26.6 mA cm–2) catalyst, by loading on the glassy carbon electrode. Moreover, high anti-CO-poisoning ability was also found in the PtIr/CoSe–NC catalyst by comparing it to the PtIr/C catalyst. The great combination effect of the CoSe–NC support and PtIr active metal alloy would be helpful and instructive for other novel catalyst system development.

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“…As the electrocatalyst for ethanol oxidation (EOR), the maximum peak current densities on Pd/B–N–G catalysts (108.8 mA·cm –2 ) were two times higher than those of Pd/B–G and Pd/N–G (63.5 and 53.4 mA·cm –2 ) . In addition, some studies reported that multiatom-doped supported metal catalysts often perform much better than that of single-atom doped electrocatalysts in the other carbon-based support. , However, the following question arises: how to arrange the multiatomic doping sequence of the carrier (N before B doping or B before N doping) and whether this might affect the electronic structure, morphology, or the electrocatalytic performance of the catalyst. To our knowledge, there have been no reports about the effect of the multielement doping sequence on the surface electronic regulation and electrocatalytic properties of supported metal catalysts, and the mechanism of dual-element doping sequence for EOR is still unclear.…”

Section: Introductionmentioning

confidence: 99%

B, N Co-Doping Sequence: An Efficient Electronic Modulation of the Pd/MXene Interface with Enhanced Electrocatalytic Properties for Ethanol Electrooxidation

Chen

Cao

et al. 2022

ACS Appl. Mater. Interfaces

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Improving the electrocatalytic properties by regulating the surface electronic structure of supported metals has always been a hot issue in electrocatalysis. Herein, two novel catalysts Pd/B–N–Ti3C2 and Pd/N–B–Ti3C2 are used as the models to explore the effect of the B and N co-doping sequence on the surface electronic structure of metals, together with the electrocatalytic properties of ethanol oxidation reaction. The two catalysts exhibit obviously stratified morphology, and the Pd nanoparticles having the same amount are both uniformly distributed on the surface. However, the electron binding energy of Ti and Pd elements of Pd/B–N–Ti3C2 is smaller than that of Pd/N–B–Ti3C2. By exploring the electrocatalytic properties for EOR, it can be seen that all the electrochemical surface area, maximum peak current density, and antitoxicity of the Pd/B–N–Ti3C2 catalyst are much better than its counterpart. Such different properties of the catalysts can be attributed to the various doping species of B and N introduced by the doping sequence, which significantly affect the surface electronic structure and size distribution of supported metal Pd. Density functional theory calculations demonstrate that different B-doped species can offer sites for the H atom from CH3CH2OH of dehydrogenation in Pd/B–N–Ti3C2, thereby facilitating the progress of the EOR to a favorable pathway. This work provides a new insight into synthesizing the high-performance anode materials for ethanol fuel cells by regulating the supported metal catalyst with multielement doping.

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Pt supported on boron, nitrogen co-doped carbon nanotubes (BNC NTs) for effective methanol electrooxidation

Cited by 18 publications

References 23 publications

Carbon nanostructures containing boron impurity atoms: synthesis, physicochemical properties and potential applications

Carbon nanostructures containing boron impurity atoms: synthesis, physicochemical properties and potential applications

PtIr Alloy Nanoparticles Anchored on CoSe–NC Nanospheres for Efficient Methanol Oxidation

B, N Co-Doping Sequence: An Efficient Electronic Modulation of the Pd/MXene Interface with Enhanced Electrocatalytic Properties for Ethanol Electrooxidation

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Pt supported on boron, nitrogen co-doped carbon nanotubes (BNC NTs) for effective methanol electrooxidation

Cited by 18 publications

References 23 publications

﻿Carbon nanostructures containing boron impurity atoms: synthesis, physicochemical properties and potential applications

﻿Carbon nanostructures containing boron impurity atoms: synthesis, physicochemical properties and potential applications

PtIr Alloy Nanoparticles Anchored on CoSe–NC Nanospheres for Efficient Methanol Oxidation

B, N Co-Doping Sequence: An Efficient Electronic Modulation of the Pd/MXene Interface with Enhanced Electrocatalytic Properties for Ethanol Electrooxidation

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Product

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Carbon nanostructures containing boron impurity atoms: synthesis, physicochemical properties and potential applications

Carbon nanostructures containing boron impurity atoms: synthesis, physicochemical properties and potential applications