Selectively doping pyridinic and pyrrolic nitrogen into a 3D porous carbon matrix through template-induced edge engineering: enhanced catalytic activity towards the oxygen reduction reaction

Luo, Ergui; Xiao, Meiling; Ge, Junjie; Liu, Changpeng; Wang, Xing

doi:10.1039/c7ta07608h

Cited by 79 publications

(30 citation statements)

References 35 publications

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“…The decomposition of CaCO 3 is accompanied by the release of CO 2 , which further reacts with carbon atoms, and this effect enlarges the pores or creates new pores followed by more defects. 33 In contrast, HFC-900 exhibits the lowest value of I D /I G ; the severe collapsing and coking of the carbon skeleton during calcination at 900 C played a crucial role, despite the activation of CaCO 3 at 800 C. Thermogravimetric analysis (TGA) curves show the thermal stability behavior of the CaCO 3 , CPDA and dried SA-CPDA-Fe(III) composites in Fig. 3(c).…”

Section: Resultsmentioning

confidence: 99%

Dopamine-derived cavities/Fe₃O₄ nanoparticles-encapsulated carbonaceous composites with self-generated three-dimensional network structure as an excellent microwave absorber

Gao

et al. 2019

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Dopamine-derived cavities/Fe₃O₄ nanoparticles-encapsulated carbonaceous composites with self-generated three-dimensional network structure as an excellent microwave absorber

Gao

et al. 2019

RSC Adv.

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“…As a result, these bonds have enhanced catalytic activity and have been used as electrocatalysts for oxygen reduction reactions (ORRs). [67][68][69][70][71] Codoping with boron further enhances the catalytic activity as it was shown that the boron atoms can help stabilize the nitrogen atoms and allow them to be located in more suitable sites for ORR. [72] Boron doping also aids in increasing the total nitrogen content incorporated into the GO.…”

Section: Boron Nitride Doped Graphene Oxidementioning

confidence: 99%

Nanomechanical Gas Sensing with Laser Treated 2D Nanomaterials

Mistry

Ibrahim

Novodchuk

et al. 2020

Adv Materials Technologies

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which is reflected in the sheer number of review articles on the topic. [1-9] Detection of VOCs in exhaled breath has been particularly useful for the diagnosis of a broad range of diseases such as diabetes, liver and lung disorders, and different forms of cancer. [10] 2D nanomaterials such as graphene oxide (GO), molybdenum disulfide (MoS 2), and tungsten disulfide (WS 2) are viable candidates for use in chemical gas sensors due to their large specific surface area that can be tailored for analyte adsorption. 2D nanomaterials have been primarily used for the detection of toxic gasses and pollutants such as nitrogen dioxide (NO 2), hydrogen disulfide (H 2 S), carbon monoxide (CO), and carbon dioxide (CO 2), [1-3,11] while the detection of VOCs by these materials has been limited. GO, [12,13] MoS 2 , [14,15] and WS 2 [16,17] have all shown a response to water vapor or relative humidity changes. Without the aid of other compounds or dopants, graphene oxide has shown a response to ethanol [18,19] and toluene vapors. [20] Similarly, MoS 2 and WS 2 have shown a response to vapors of ethanol, acetone, hexane, toluene, and benzene. [21-23] In most of these reports, the sensing material is casted over a set of interdigitated electrodes to form a chemoresistive sensor. The interaction between analyte vapors and the sensing material (i.e., through

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“…The most widely used catalysts are platinum (Pt) metal-based due to their high mechanical strength, large surface area, good electrical conductivity, thermal stability, and recyclable properties. However, Pt catalyst suffers from scarcity, high cost, and low durability [4][5][6]. Therefore, identifying low-cost and efficient metal or metal-free catalysts for ORR is a hot topic of research.…”

Section: Introductionmentioning

confidence: 99%

Pyrrolic, pyridinic, and graphitic sumanene as metal‐free catalyst for oxygen reduction reaction – A density functional theory study

2021

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This study investigates the nitrogen (N)-doped sumanene (SUMA) molecule's catalytic behavior for the four-electron oxygen reduction reaction (ORR) process. Accordingly, the N atom is doped at three different positions on the SUMA molecule to obtain the pyrrolic, pyridinic, and graphitic SUMA. The free energy value for the individual reaction processes in the four-electron reduction reaction shows high exothermicity and feasibility for the N-doped SUMA molecules.Moreover, the free energy for the entire four-electron reduction reaction lies well below the value of O 2 reduction into two water (H 2 O) molecules -474.71 kJ/mol.The N-doped SUMA molecules exhibit stronger adsorption energy despite being metal-free. The physisorption of the final product (H 2 O molecule) over the SUMA molecules suggests the possibility of regeneration of the catalyst, thereby controlling catalytic poisoning. Specifically, the graphitic SUMA shows a prominent catalytic behavior due to a lower highest occupied molecular orbital-lowest unoccupied molecular orbital energy gap, which arises due to the increased charge density of the carbon atoms present near the graphitic N site. Besides, doping carbon-based materials with N at the central benzene ring significantly enhances their catalytic efficiency due to localized π-orbitals. Overall, the results reveal that N-doped SUMA molecules are a promising metal-free catalyst for ORR activity.

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Selectively doping pyridinic and pyrrolic nitrogen into a 3D porous carbon matrix through template-induced edge engineering: enhanced catalytic activity towards the oxygen reduction reaction

Abstract: Selectively pyridinic and pyrrolic nitrogen doped porous carbon was synthesized and acted as an excellent electrocatalyst for the ORR.

Cited by 79 publications

References 35 publications

Dopamine-derived cavities/Fe₃O₄ nanoparticles-encapsulated carbonaceous composites with self-generated three-dimensional network structure as an excellent microwave absorber

Dopamine-derived cavities/Fe₃O₄ nanoparticles-encapsulated carbonaceous composites with self-generated three-dimensional network structure as an excellent microwave absorber

Nanomechanical Gas Sensing with Laser Treated 2D Nanomaterials

Pyrrolic, pyridinic, and graphitic sumanene as metal‐free catalyst for oxygen reduction reaction – A density functional theory study

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Selectively doping pyridinic and pyrrolic nitrogen into a 3D porous carbon matrix through template-induced edge engineering: enhanced catalytic activity towards the oxygen reduction reaction

Abstract: Selectively pyridinic and pyrrolic nitrogen doped porous carbon was synthesized and acted as an excellent electrocatalyst for the ORR.

Cited by 79 publications

References 35 publications

Dopamine-derived cavities/Fe3O4 nanoparticles-encapsulated carbonaceous composites with self-generated three-dimensional network structure as an excellent microwave absorber

Dopamine-derived cavities/Fe3O4 nanoparticles-encapsulated carbonaceous composites with self-generated three-dimensional network structure as an excellent microwave absorber

Nanomechanical Gas Sensing with Laser Treated 2D Nanomaterials

Pyrrolic, pyridinic, and graphitic sumanene as metal‐free catalyst for oxygen reduction reaction – A density functional theory study

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Dopamine-derived cavities/Fe₃O₄ nanoparticles-encapsulated carbonaceous composites with self-generated three-dimensional network structure as an excellent microwave absorber

Dopamine-derived cavities/Fe₃O₄ nanoparticles-encapsulated carbonaceous composites with self-generated three-dimensional network structure as an excellent microwave absorber