Ionic‐State Cobalt and Iron Co‐doped Carbon Dots with Superior Electrocatalytic Activity for the Oxygen Evolution Reaction

2019 ◽  
Vol 6 (7) ◽  
pp. 2088-2094 ◽  
Author(s):  
Mingxi Yang ◽  
Tanglue Feng ◽  
Yixin Chen ◽  
Xiaohuan Zhao ◽  
Bai Yang
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Carbon Dots ◽  
Ionic State ◽  
Doped Carbon Dots ◽  
Co Doped

Cobalt phosphide/carbon dots composite as an efficient electrocatalyst for oxygen evolution reaction

2018 ◽  
Vol 47 (15) ◽  
pp. 5459-5464 ◽  
Author(s):  
Mengmeng Zhu ◽  
Yunjie Zhou ◽  
Yue Sun ◽  
Cheng Zhu ◽  
Lulu Hu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Carbon Dots ◽  
Cobalt Phosphide ◽  
Good Electrocatalytic Activity

Cobalt phosphide/carbon dots composite exhibits good electrocatalytic activity and stability towards the oxygen evolution reaction.

Mesoporous nitrogen, sulfur co-doped carbon dots/CoS hybrid as an efficient electrocatalyst for hydrogen evolution

2017 ◽  
Vol 5 (6) ◽  
pp. 2717-2723 ◽  
Author(s):  
Liping Wang ◽  
Xiuqin Wu ◽  
Sijie Guo ◽  
Mumei Han ◽  
Yunjie Zhou ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Carbon Dots ◽  
Doped Carbon Dots ◽  
Co Doped

Mesoporous NSCDs/CoS hybrid exhibits desired electrocatalytic activity for electrochemical hydrogen evolution reaction.

scholarly journals NiCo2O4 Nanoparticles inlaid on Sulphur, Nitrogen Doped and Co-doped rGO as Efficient Electrocatalysts for Oxygen Evolution and Methanol Oxidation Reactions

2021 ◽  
Author(s):  
A. Rebekah ◽  
Viswanathan Chinnuswamy ◽  
Nagamony Ponpandian
Keyword(s):  
Oxygen Evolution ◽  
Methanol Oxidation ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Oxidation Reaction ◽  
Methanol Oxidation Reaction ◽  
Oxidation Reactions ◽  
Nitrogen Doped ◽  
Co Doped

The present work depicts the fabrication of NiCo2O4 decorated on rGO, doped and co-doped rGO and its electrocatalytic activity towards oxygen evolution reaction and methanol oxidation reaction. The catalyst NiCo2O4...

Amorphous Co-doped MoOx nanospheres with a core–shell structure toward an effective oxygen evolution reaction

2019 ◽  
Vol 7 (3) ◽  
pp. 1005-1012 ◽  
Author(s):  
Chengying Guo ◽  
Xu Sun ◽  
Xuan Kuang ◽  
Lingfeng Gao ◽  
Mingzhu Zhao ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Shell Structure ◽  
Electrocatalytic Activity ◽  
Hydrothermal Reaction ◽  
Core Shell ◽  
Core Shell Structure ◽  
Unique Core ◽  
Co Doped

Amorphous cobalt-doped MoOx (CMO) nanospheres with a unique core–shell structure have been successfully fabricated via a simple hydrothermal reaction. The CMO exhibited enhanced electrocatalytic activity for the oxygen evolution reaction.

Nitrogen and Sulfur Co-doped Fluorescent Carbon Dots for the Detection of Morin and Cell Imaging

2018 ◽  
Vol 15 (1) ◽  
pp. 47-55
Author(s):  
Xuebing Li ◽  
Haifen Yang ◽  
Ning Wang ◽  
Tijian Sun ◽  
Wei Bian ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Fluorescent Probe ◽  
Fluorescence Intensity ◽  
Carbon Dots ◽  
Cell Imaging ◽  
Water Soluble ◽  
Heating Process ◽  
X Ray ◽  
Doped Carbon Dots ◽  
Co Doped

Background: Morin has many pharmacological functions including antioxidant, anticancer, anti-inflammatory, and antibacterial effects. It is commonly used in the treatment of antiviral infection, gastropathy, coronary heart disease and hepatitis B in clinic. However, researches have shown that morin is likely to show prooxidative effects on the cells when the amount of treatment is at high dose, leading to the decrease of intracellular ATP levels and the increase of necrosis process. Therefore, it is necessary to determine the concentration of morin in biologic samples. Method: Novel water-soluble and green nitrogen and sulfur co-doped carbon dots (NSCDs) were prepared by a microwave heating process with citric acid and L-cysteine. The fluorescence spectra were collected at an excitation wavelength of 350 nm when solutions of NSCDs were mixed with various concentrations of morin. Results: The as-prepared NSCDs were characterized by transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The fluorescence intensity of NSCDs decreased significantly with the increase of morin concentration. The fluorescence intensity of NSCDs displayed a linear response to morin in the concentration 0.10-30 μM with a low detection limit of 56 nM. The proposed fluorescent probe was applied to analysis of morin in human body fluids with recoveries of 98.0-102%. Conclusion: NSCDs were prepared by a microwave heating process. The present analytical method is sensitive to morin. The quenching process between NSCDs and morin is attributed to the static quenching. In addition, the cellular toxicity on HeLa cells indicated that the as-prepared NSCDs fluorescent probe does not show obvious cytotoxicity in cell imaging. Our proposed method possibly opens up a rapid and nontoxic way for preparing heteroatom doped carbon dots with a broad application prospect.

Multifunctional N,S co-doped carbon dots for sensitive probing of temperature, ferric ion, and methotrexate

2019 ◽  
Vol 411 (8) ◽  
pp. 1647-1657 ◽  
Author(s):  
Pengli Zuo ◽  
Jianhua Liu ◽  
Hongna Guo ◽  
Chenghong Wang ◽  
Hongqian Liu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Ferric Ion ◽  
Doped Carbon Dots ◽  
Co Doped
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