Natural tea-leaf-derived, ternary-doped 3D porous carbon as a high-performance electrocatalyst for the oxygen reduction reaction

Guo, Zhaoyan; Xiao, Zhen; Ren, Guangyuan; Xiao, Guozheng; Zhu, Ying; Dai, Liming; Jiang, Lei

doi:10.1007/s12274-016-1020-2

Cited by 56 publications

(34 citation statements)

References 45 publications

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“…These results together with the electron microscopy analysis validated the formation of Fe2O3 nanoparticles anchored on N-doped carbon nanostructures. Recently, it has been reported that ORR activity has close connection to N content; thus, nitrogen species in Fe2O3/N-PCs were carefully analyzed [46]. The N1s XPS spectra of all samples were deconvoluted into six peaks ( Figure 4D-F), namely pyridinic N (397.9 ± 0.2 eV), Fe-Nx (399.0 ± 0.1 eV), pyrrolic N (400.4 ± 0.1 eV), graphitic N (401.8 ± 0.3 eV), quaternary N (402.6 ± 0.2 eV), and oxidized pyridinic N (403.3 ± 0.2 eV) [47,48].…”

Section: Resultsmentioning

confidence: 99%

“…The abundant porous structures, vast nitrogen atoms, and large amounts of Fe-Nx existing in the Fe2O3/N-PCs-850 sample play the most important roles in promoting its ORR activity, ensuring that the Fe2O3/N-PCs-850 sample has promising ORR catalytic activity [25]. Meanwhile, some literature studies proved that pyridinic-N Recently, it has been reported that ORR activity has close connection to N content; thus, nitrogen species in Fe 2 O 3 /N-PCs were carefully analyzed [46]. The N1s XPS spectra of all samples were deconvoluted into six peaks ( Figure 4D-F [49].…”

Section: Resultsmentioning

confidence: 99%

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Cost-Effective and Facile Preparation of Fe2O3 Nanoparticles Decorated N-Doped Mesoporous Carbon Materials: Transforming Mulberry Leaf into a Highly Active Electrocatalyst for Oxygen Reduction Reactions

Zhang

Guan

et al. 2018

Catalysts

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Herein, a promising method to prepare efficient N-doped porous carbon-supported Fe 2 O 3 nanoparticles (Fe 2 O 3 /N-PCs) ORR electrocatalysts is presented. The porous carbon was derived from a biomass i.e., mulberry leaf through a cost-effective approach. The existence of diverse compounds containing carbon, oxygen, nitrogen and sulfur in mulberry leaf benefit the formation and uniform dispersion of Fe 2 O 3 nanoparticles (NPs) in the porous carbon. In evaluating the effects of the carbon support on the Fe 2 O 3 NPs towards the ORR, we found that the sample of Fe 2 O 3 /N-PCs-850 (Fe 2 O 3 /N-PCs obtained at 850 • C) with high surface area of 313.8 m 2 ·g −1 exhibits remarkably superior ORR activity than that of materials acquired under other temperatures. To be specific, the onset potential and reduction peak potential of Fe 2 O 3 /N-PCs-850 towards ORR are 0.936 V and 0.776 V (vs. RHE), respectively. The calculated number of electron transfer n for the ORR is 3.9, demonstrating a near four-electron-transfer process. Furthermore, it demonstrates excellent longtime stability and resistance to methanol deactivation compared with Pt/C catalyst. This study provides a novel design of highly active ORR electrocatalysts from low-cost abundant plant products.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Cost-Effective and Facile Preparation of Fe2O3 Nanoparticles Decorated N-Doped Mesoporous Carbon Materials: Transforming Mulberry Leaf into a Highly Active Electrocatalyst for Oxygen Reduction Reactions

Zhang

Guan

et al. 2018

Catalysts

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“…However, such composite did not exhibit the desired electrochemical activity due to the weak conductivity. Recently, activated carbon has been confirmed to be able to enhance the conductivity of catalyst . Accordingly, one of the most ideal alternatives was to use carbon as supporting agent for nitrogen doping and combing with transition metal for ORR.…”

Section: Introductionmentioning

confidence: 99%

Cobalt‐based Catalysts Modified Cathode for Enhancing Bioelectricity Generation and Wastewater Treatment in Air‐breathing Cathode Microbial Fuel Cells

Zhong

Zhang

et al. 2019

Electroanalysis

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To seek an efficient way to enhance the power output and wastewater treatment of microbial fuel cell (MFC), several cobalt‐based composites are successfully synthesized by a facile hydrothermal method under different pyrolysis temperature, and these composites are used as electrocatalyst in air‐breathing cathode of MFC. Different species of nitrogen atom are successfully grafted on the cobalt‐based composites and confirmed by physical and electrochemical analyses. In MFC tests, the maximum power density increases from 577.8 mW m−2 to 931.1 mW m−2 with pyrolysis temperature (except for 1000 °C). These electrochemical tests and high COD removal show that Co/N/C‐900 can rapidly transfer electron via a 2×2 e− transfer pathway, mainly due to the exposure of large electrochemical active area and introduction of the defects of pyridinic−N and abundant oxygen vacancies. Although the power density of MFC with Co/N/C‐900 is 81.1 % of that of commercial Pt/C, the MFC with Co/N/C‐900 is more stable than that of Pt/C, and the power density for Co/N/C‐900 has only a 2.8 % decrease during 25‐cycles operation. The great electrocatalytic activity of the novel Co/N/C‐900 composite exhibits a superior outlook for scale‐up application of MFC in the future.

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“…Carbon materials have attracted increasing attention because of its remarkable electronic [1], optical [2], mechanical [3] and catalytic [4,5] properties. These characteristics make it one of the most common electrode materials applied in electrochemical sensing platforms [6,7].…”

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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Natural tea-leaf-derived, ternary-doped 3D porous carbon as a high-performance electrocatalyst for the oxygen reduction reaction

Cited by 56 publications

References 45 publications

Cost-Effective and Facile Preparation of Fe2O3 Nanoparticles Decorated N-Doped Mesoporous Carbon Materials: Transforming Mulberry Leaf into a Highly Active Electrocatalyst for Oxygen Reduction Reactions

Cost-Effective and Facile Preparation of Fe2O3 Nanoparticles Decorated N-Doped Mesoporous Carbon Materials: Transforming Mulberry Leaf into a Highly Active Electrocatalyst for Oxygen Reduction Reactions

Cobalt‐based Catalysts Modified Cathode for Enhancing Bioelectricity Generation and Wastewater Treatment in Air‐breathing Cathode Microbial Fuel Cells

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

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