Nitrogen and sulphur co-doped multiwalled carbon nanotubes as an efficient electrocatalyst for improved oxygen electroreduction

Patil, Indrajit; Reddy, V. Pradeep; Lokanathan, Moorthi; Kakade, Bhalchandra

doi:10.1016/j.apsusc.2017.12.124

Cited by 31 publications

(24 citation statements)

References 31 publications

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“…The high‐resolved C1s XPS spectrum (Figure 2C) can be deconvoluted into 5 peaks at 284.3 (28.69%), 284.8 (21.26%), 286.0 (19.29%), 287.4 (12.65%), and 288.0 eV (18.11%), which are attributed to CC, CC, CN/CS, CO, and CO bonds, respectively . The spectrum of O1s (Figure 2D) is divided into 3 peaks at 531.0 (61.76%), 531.7 (31.14%), and 535.0 eV (7.10%) that can be assigned to CO, OH, and OCO groups . In the deconvoluted N1s spectrum (Figure 2E), binding energies located at 397.6 (32.14%), 399.4(63.56%), and 401.2 eV (4.3%) are assigned to pyridinic N, pyrrolic N, and graphitic‐N, respectively .…”

Section: Resultsmentioning

confidence: 99%

Nitrogen and sulfur co‐doped carbon nanodots toward bovine hemoglobin: A fluorescence quenching mechanism investigation

Wang

Xiang

Milcovich

et al. 2018

J of Molecular Recognition

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A deep understanding of the molecular interactions of carbon nanodots with biomacromolecules is essential for wider applications of carbon nanodots both in vitro and in vivo. Herein, nitrogen and sulfur co-doped carbon dots (N,S-CDs) with a quantum yield of 16% were synthesized by a 1-step hydrothermal method. The N,S-CDs exhibited a good dispersion, with a graphite-like structure, along with the fluorescence lifetime of approximately 7.50 ns. Findings showed that the fluorescence of the N,S-CDs was effectively quenched by bovine hemoglobin as a result of the static fluorescence quenching. The mentioned quenching mechanism was investigated by the Stern-Volmer equation, temperature-dependent quenching, and fluorescence lifetime measurements. The binding constants, number of binding sites, and the binding average distance between the energy donor N,S-CDs and acceptor bovine hemoglobin were calculated as well. These findings will provide for valuable insights on the future bioapplications of N,S-CDs.

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Section: Resultsmentioning

confidence: 99%

Nitrogen and sulfur co‐doped carbon nanodots toward bovine hemoglobin: A fluorescence quenching mechanism investigation

Wang

Xiang

Milcovich

et al. 2018

J of Molecular Recognition

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“…The electrochemical studies confirmed that upon optimization of the NSCD/C catalyst, the ORR kinetics could be drastically improved with Eonset of 0.87 V vs RHE and JL of 5.0 mA cm −2 in alkaline condition. Additionally, the catalyst shows a single step, nearly 4-electron transfer pathway, indicating first order kinetics similar to that of Pt/C based catalysts [92]. Moreover, the incorporation of N and S into defects of CNTs generated by different ball milling periods was investigated.…”

Section: Doped Cnts For Fuel Cellsmentioning

confidence: 87%

Fundamentals and scopes of doped carbon nanotubes towards energy and biosensing applications

Muhulet

Miculescu

Voicu

et al. 2018

Materials Today Energy

173

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Since their first allusion, carbon nanotubes have attracted significant research interest, especially with respect to composite manufacturing as a filler material for enhancing their mechanical and electrical properties. Several methods have been developed for modifying the electrical properties of carbon nanotubes such as CNTs wall's carbon atoms substitution with other appropriate atoms including engineering of their outer surfaces by covalent and noncovalent molecules, such as CNTs channel filling and nano-chemical reactions therein. CNTs with tailored electrical conduction open large perspectives for their applicabilities in advanced technologies. Taking into consideration the innovative advantages of pure and hybrid CNTs, in this article we have comprehensively reviewed the latest state-of-art research developments in the direction of different synthesis strategies, structure-property relationships, and advanced applications towards energy storage, supercapacitors, electrodes, catalytic supports, as well as biosensing.

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“…The stability of the catalyst should be tested either in the form of their retention of activity after many cycles (upward of 10 000) or prolonged voltage holds (>1 00 00 s). Although tolerance to MeOH is often a metric that is used to assess the quality of metal‐free catalysts, it has become abundantly clear that heteroatom‐doped catalysts are not active for MeOH oxidation, and so do not suffer voltage loss due to MeOH crossover, exemplified by the majority of recent examples in the literature . It is apparent that this is now a largely meaningless metric for metal‐free catalysts, and all non‐PGM (Pt group metal) materials should be assumed to have good tolerance to MeOH cross‐over.…”

Section: Best Practice For Oxygen and Hydrogen Electrocatalysismentioning

confidence: 99%

3D Carbon Materials for Efficient Oxygen and Hydrogen Electrocatalysis

Sobrido

Jervis

Periasamy

et al. 2019

Advanced Energy Materials

108

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Sustainable energy production at an acceptable cost is key for its widespread application. At present, noble metals and metal oxides are the most widely used for electrocatalysis, but they suffer from low selectivity, poor durability, and scarcity. Because of this, metal‐free carbons have become the subject of great interest as promising alternative electrocatalysts for energy conversion and storage devices, and remarkable progress has been accomplished in the advance of metal‐free carbons as electrocatalysts for renewable energy technologies. Particularly interesting are 3D porous carbon architectures, which exhibit outstanding features for electrocatalysis applications, including broad range of active sites, interconnected porosity, high conductivity, and mechanical stability. This review summarizes the latest advances in 3D porous carbon structures for oxygen and hydrogen electrocatalysis. The structure–performance relationship of these materials is consequently rationalized and perspectives on creating more efficient 3D carbon electrocatalysts are suggested.

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Nitrogen and sulphur co-doped multiwalled carbon nanotubes as an efficient electrocatalyst for improved oxygen electroreduction

Cited by 31 publications

References 31 publications

Nitrogen and sulfur co‐doped carbon nanodots toward bovine hemoglobin: A fluorescence quenching mechanism investigation

Nitrogen and sulfur co‐doped carbon nanodots toward bovine hemoglobin: A fluorescence quenching mechanism investigation

Fundamentals and scopes of doped carbon nanotubes towards energy and biosensing applications

3D Carbon Materials for Efficient Oxygen and Hydrogen Electrocatalysis

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