scholarly journals Nested hollow architectures of nitrogen-doped carbon-decorated Fe, Co, Ni-based phosphides for boosting water and urea electrolysis

Nano Research ◽  
2021 ◽  
Author(s):  
Jie Zhang ◽  
Shoushuang Huang ◽  
Ping Ning ◽  
Peijun Xin ◽  
Zhiwen Chen ◽  
...  
Keyword(s):  
Low Voltage ◽  
Water Electrolysis ◽  
Electronic Configuration ◽  
Electron Mass ◽  
Hydrogen Electrode ◽  
Nitrogen Doped ◽  
Metal Phosphides ◽  
Urea Electrolysis ◽  
Nitrogen Doped Carbon ◽  
Excellent Stability

AbstractTailoring the nanostructure/morphology and chemical composition is important to regulate the electronic configuration of electrocatalysts and thus enhance their performance for water and urea electrolysis. Herein, the nitrogen-doped carbon-decorated tricomponent metal phosphides of FeP4 nanotube@Ni-Co-P nanocage (NC-FNCP) with unique nested hollow architectures are fabricated by a self-sacrifice template strategy. Benefiting from the multi-component synergy, the modification of nitrogen-doped carbon, and the modulation of nested porous hollow morphology, NC-FNCP facilitates rapid electron/mass transport in water and urea electrolysis. NC-FNCP-based anode shows low potentials of 248 mV and 1.37 V (vs. reversible hydrogen electrode) to attain 10 mA/cm2 for oxygen evolution reaction (OER) and urea oxidation reaction (UOR), respectively. In addition, the overall urea electrolysis drives 10 mA/cm2 at a comparatively low voltage of 1.52 V (vs. RHE) that is 110 mV lower than that of overall water electrolysis, as well as exhibits excellent stability over 20 h. This work strategizes a multi-shell-structured electrocatalyst with multi-compositions and explores its applications in a sustainable combination of hydrogen production and sewage remediation.

Nitrogen-doped carbon wrapped Co-Mo2C dual Mott–Schottky nanosheets with large porosity for efficient water electrolysis

2021 ◽  
Vol 284 ◽  
pp. 119738 ◽  
Author(s):  
Pengfei Zhang ◽  
Yaoda Liu ◽  
Tingting Liang ◽  
Edison Huixiang Ang ◽  
Xu Zhang ◽  
...  
Keyword(s):  
Water Electrolysis ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon

scholarly journals Hollow nitrogen-doped carbon spheres as efficient and durable electrocatalysts for oxygen reduction

2014 ◽  
Vol 50 (67) ◽  
pp. 9473-9476 ◽  
Author(s):  
Jakkid Sanetuntikul ◽  
Tao Hang ◽  
Sangaraju Shanmugam
Keyword(s):  
Oxygen Reduction ◽  
Alkaline Electrolyte ◽  
Carbon Spheres ◽  
Nitrogen Doped ◽  
Reduction Activity ◽  
Nitrogen Doped Carbon ◽  
Excellent Stability

Hollow nitrogen-doped carbon spheres showed oxygen reduction activity comparable with a commercial Pt/C catalyst and excellent stability in alkaline electrolyte medium.

Simultaneous determination of ascorbic acid, dopamine and uric acid at a nitrogen-doped carbon nanofiber modified electrode

RSC Advances ◽  
2015 ◽  
Vol 5 (16) ◽  
pp. 11925-11932 ◽  
Author(s):  
Jinying Sun ◽  
Libo Li ◽  
Xueping Zhang ◽  
Dong Liu ◽  
Simin Lv ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Carbon Nanofiber ◽  
Simultaneous Detection ◽  
High Sensitivity ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon ◽  
Small Biomolecules ◽  
Excellent Stability

This paper demonstrates high electrocatalytic activity of NCNF/GCE towards small biomolecules. The proposed electrochemical sensor exhibits good selectivity, high sensitivity and excellent stability towards AA, DA and UA simultaneous detection.

scholarly journals Nanoneedle-forest NiCo2O4@nitrogen-doped Carbon-Mo2C/CC as Double Functional Electrocatalysts for Water Hydrolysis and Zn-air Batteries

2021 ◽  
Author(s):  
Changhua Xu ◽  
Qiguan Wang ◽  
Shaoting Zhao ◽  
Sumin Wang
Keyword(s):  
Specific Capacity ◽  
Water Electrolysis ◽  
Reduction Reaction ◽  
Carbon Cloth ◽  
Air Cathode ◽  
Nitrogen Doped ◽  
Nickel Cobalt ◽  
Nickel Cobalt Oxide ◽  
Water Hydrolysis ◽  
Nitrogen Doped Carbon

Abstract The construction of efficient and stable non-precious metal electrocatalysts for water hydrolysis and metal-air batteries is a key to tackle the energy shortage and environmental pollution. Herein, a composite consisting of needle-forest nickel cobalt oxide and nitrogen-doped carbon (NDC)-molybdenum carbide loaded on carbon cloth (NiCo2O4@NDC-Mo2C/CC) is synthesized from the hydrothermal method. The introduction of nitrogen-doped carbon and carbon cloth improves the electrical conductivity of the composite, the existence of NDC-Mo2C on CC makes NiCo2O4 produce generous oxygen vacancies. Therefore, NiCo2O4@NDC-Mo2C/CC shows the low overpotentials of HER (120 mV) and OER (220 mV) @10 mA cm-2 and excellent performances for overall water electrolysis in alkaline medium. Also, NiCo2O4@NDC-Mo2C/CC exhibits robust oxygen reduction reaction (ORR) performance and a large specific capacity of 778 mAh g−1 and energy density of 104 mW cm−2 as air cathode in Zn-air batteries. This work enriches knowledge to explore multifunctional electrocatalysts to replace noble metallic catalysts.

scholarly journals Nitrogen-Doped Carbon-Encased Bimetallic Selenide for High-Performance Water Electrolysis

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Junhui Cao ◽  
Kexin Wang ◽  
Jiayi Chen ◽  
Chaojun Lei ◽  
Bin Yang ◽  
...  
Keyword(s):  
High Performance ◽  
Water Electrolysis ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon

Nitrogen-doped carbon nanocones encapsulating with nickel–cobalt mixed phosphides for enhanced hydrogen evolution reaction

2017 ◽  
Vol 5 (32) ◽  
pp. 16568-16572 ◽  
Author(s):  
Lei Han ◽  
Tongwen Yu ◽  
Wen Lei ◽  
Wenwen Liu ◽  
Kun Feng ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Alkaline Solutions ◽  
Carbon Nanocones ◽  
Nitrogen Doped ◽  
Nickel Cobalt ◽  
Etching Method ◽  
Nitrogen Doped Carbon ◽  
Excellent Stability

Nickel–cobalt mixed phosphides encapsulated into nitrogen-doped carbon nanocones have been successfully prepared through a facile ammonia-etching method followed by phosphidation treatment, which exhibit high electrocatalytic activity and excellent stability toward the hydrogen evolution reaction in both acidic and alkaline solutions.

scholarly journals Transforming Waste Poly(Ethylene Terephthalate) into Nitrogen Doped Carbon Nanotubes and Its Utility in Oxygen Reduction Reaction and Bisphenol-A Removal from Contaminated Water

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4144
Author(s):  
Vadahanambi Sridhar ◽  
Hyun Park
Keyword(s):  
Bisphenol A ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Nano Particles ◽  
Iron Electrode ◽  
Hydrogen Electrode ◽  
Nitrogen Doped ◽  
Poly Ethylene ◽  
Nitrogen Doped Carbon

Till date, waste plastics are either down-cycled to cheap products like fibers or burnt in incinerators to generate heat. In this manuscript, we report a simple and effective technique for microwave induced transformation of waste polyethylene terephthalate (wPET) to carbon nano-tubes (CNT). Iron nano-particles dispersed on graphene substrate acted as catalyst for CNT growth whereas urea served the dual role of de-polymerisation of wPET and also as nitrogen doping agent. Application of our newly synthesized 3-D meso-porous graphene-nitrogen doped carbon nanotube- iron electrode (Fe@NCNT-rGO) as electro-catalyst for oxygen reduction reaction (ORR) shows a positive half-wave potential (E1/2) of 0.75 V vs. RHE (reversible hydrogen electrode), nearly ideal four-electron pathway and excellent methanol tolerance when compared to commercial 20% Pt/C. The utility of Fe@NCNT-rGO for removal of bisphenol A from contaminated waters is also reported.

Cobalt nanoparticles encapsulated in nitrogen-doped carbon as a bifunctional catalyst for water electrolysis

2014 ◽  
Vol 2 (47) ◽  
pp. 20067-20074 ◽  
Author(s):  
Jing Wang ◽  
Dunfeng Gao ◽  
Guoxiong Wang ◽  
Shu Miao ◽  
Haihua Wu ◽  
...  
Keyword(s):  
Water Electrolysis ◽  
Bifunctional Catalyst ◽  
Cobalt Nanoparticles ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon

Nitrogen-doped carbon dots encapsulated in the mesoporous channels of SBA-15 with solid-state fluorescence and excellent stability

Nanoscale ◽  
2019 ◽  
Vol 11 (15) ◽  
pp. 7247-7255 ◽  
Author(s):  
Qing Chang ◽  
Shanshan Yang ◽  
Chaorui Xue ◽  
Ning Li ◽  
Yanzhong Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Carbon Dots ◽  
Nitrogen Doped ◽  
Solid State Fluorescence ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon ◽  
Excellent Stability

Nitrogen-doped carbon dots encapsulated in the mesoporous channels of SBA-15 (NCDs-in-SBA-15), with excellent structural, thermal and photostability, are successfully achieved.

Sign in / Sign up

Export Citation Format

Share Document