α- and γ-Fe2O3 nanoparticle/nitrogen doped carbon nanotube catalysts for high-performance oxygen reduction reaction

Sun, Meng; Zhang, Gong; Liu, Huijuan; Liu, Yang; Li, Jinghong

doi:10.1007/s40843-015-0082-x

Cited by 72 publications

(42 citation statements)

References 30 publications

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“…The Raman spectra of carbon materials have the typical features at 1,590 cm −1 (G-band around) and 1,350 cm −1 (Dband around) [36,37]. The intensity ratio of D and G band, I D /I G , representing the defect level of carbon materials, increased a little after acid washing (Fig.…”

Section: Resultsmentioning

confidence: 92%

N, P-dual doped carbon with trace Co and rich edge sites as highly efficient electrocatalyst for oxygen reduction reaction

et al. 2017

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Oxygen reduction reaction (ORR) is key to fuel cells and metal-air batteries which are considered as the alternative clean energy. Various carbon materials have been widely researched as ORR electrocatalysts. It has been accepted that heteroatom doping and exposure of the edge sites can effectively improve the activity of carbon materials. In this work, we used a simple method to prepare a novel N, P-dual doped carbon-based catalyst with many holes on the surface. In addition, trace level Co doping in the carbon material forming Co-N-C active species can further enhance the ORR performance. On one hand, the doping can adjust the electronic structure of carbon atoms, which would induce more active sites for ORR. And on the other hand, the holes formed on the surface of carbon nanosheets would expose more edge sites and can improve the intrinsic activity of carbon. Due to the heteroatom doping and the exposed edge sites, the prepared carbon materials showed highly excellent ORR performance, close to that of commercial Pt/C.

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Section: Resultsmentioning

confidence: 92%

N, P-dual doped carbon with trace Co and rich edge sites as highly efficient electrocatalyst for oxygen reduction reaction

et al. 2017

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“…Moreover, more active sites with varied charge density were introduced when a small amount of transition metal (e.g., Fe, Ni, or Co) and N were co-doped in carbon matrix. Therefore, co-doping of metal and nonmetal elements would be beneficial to various electrochemical processes [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Constrained-volume assembly of organometal confined in polymer to fabricate multi-heteroatom doped carbon for oxygen reduction reaction

Zhao

Priestley

et al. 2018

Sci. China Mater.

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“…In the previous studies, researchers have attempted to improve the electrical conductivity of carbon materials by chemical doping [21][22][23][24][25][26] and increased crystallized graphene structure [27], such as using H 2 SO 4 to strip off O and H from the C-OH, C-H, and C=O groups, to form the electro-conductive graphite structure; however, the effect is limited. Several studies have shown that doping carbon materials with heteroatoms (nitrogen, boron, sulfur and phosphorous) is a promising way to further improve the electrical conductivity [21][22][23][24][25][26], such as doping nitrogen into carbon to form pyridine-N, pyrrole-N and graphitic-N structure.…”

Section: Introductionmentioning

confidence: 99%

“…Several studies have shown that doping carbon materials with heteroatoms (nitrogen, boron, sulfur and phosphorous) is a promising way to further improve the electrical conductivity [21][22][23][24][25][26], such as doping nitrogen into carbon to form pyridine-N, pyrrole-N and graphitic-N structure. These donating electron structures can form enhanced π-bonding to promote electron transfer [28,29] which is advantageous for enhancing electrochemical sensing performances [30].…”

Section: Introductionmentioning

confidence: 99%

Ultra-low charge transfer resistance carbons by one-pot hydrothermal method for glucose sensing

Liu

Zhao

et al. 2017

Sci. China Mater.

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Hydrothermal carbon (HTC) is typically welldispersed, but it remains a great challenge for HTC to become conductive. Co-doping with heteroatoms has been confirmed to be an effective strategy to significantly promote the electrical conductivity of carbon. Moreover, there is no simple and green method to construct sensitive HTC based electrochemical biosensors until now. In this paper, N and S dualdoped carbon (NS-C) with ultra-low charge transfer resistance is easily synthesized from L-cysteine and glucose in a hydrothermal reaction system. The morphology, structural properties and electrochemical properties of the as-prepared NS-C are analyzed. In comparison with the undoped hydrothermal (UC) modified glassy carbon electrode (GCE), the charge transfer resistance of UC (476 Ω , indicating a high affinity of glucose oxidase to glucose. These results demonstrate that the hydrothermal method is an effective way for preparing high electrical conductivity carbon with excellent performances in biosensor application.

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α- and γ-Fe2O3 nanoparticle/nitrogen doped carbon nanotube catalysts for high-performance oxygen reduction reaction

Cited by 72 publications

References 30 publications

N, P-dual doped carbon with trace Co and rich edge sites as highly efficient electrocatalyst for oxygen reduction reaction

N, P-dual doped carbon with trace Co and rich edge sites as highly efficient electrocatalyst for oxygen reduction reaction

Constrained-volume assembly of organometal confined in polymer to fabricate multi-heteroatom doped carbon for oxygen reduction reaction

Ultra-low charge transfer resistance carbons by one-pot hydrothermal method for glucose sensing

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