Nitrogen-containing carbon nanotubes (NCNTs) were prepared via pyrolysis of acetonitrile over cobalt catalysts at different temperatures to control the nitrogen content. The changes in chemical and structural properties undoped CNTs NCNTs investigated using high-resolution X-ray photoelectron Raman spectroscopy. 550 °C had a higher amount pyridinic groups edge plane exposure than ones 750 °C. thermal stability transformation these functional was studied deconvoluted XP N 1s spectra. show...

CoFe(3 : 1)S 2 produces pure H from S electrolysis at a very low potential, making the overall process six times less energy-consuming than most sustainable water for same amount of production.

Hydrogen is an efficient green energy source. Herein, we report nickel vanadium phosphide/phosphate–Vulcan carbon (NiVP/Pi–VC) as effective bifunctional electrocatalyst for HER coupled with glucose oxidation, which shows lower cell voltage compared to water electrolysis.

Abstract Despite of multifarious dominance sulfur‐based batteries, polysulfide‐shuttling and use high‐cost organic electrolytes with flammability risks hinder their applicability as commercial devices. Herein a polysulfide‐free aqueous zinc‐sulfur (Zn─S) rechargeable battery is explored, which offers low‐cost environmentally friendly energy storage system being Zn Sulfur (S) highly abundant high theoretical capacity. However, the stability anode quite challenging due to dendritic growth...

Ammonia is a crucial feedstock for the chemical industry, carbon-free energy source, and safe source hydrogen storage. The electrochemical nitrate reduction reaction (NO3RR) one promising strategy greener ammonia synthesis due to high water solubility low N═O bond dissociation of NO3–. More importantly, polluted Herein, we rationally designed bifunctional covalent organic framework catalyst (Ru-Tta-Dfp) having triazine- pyridine-rich backbone with inherent Ru-nanocluster sites control both...

Nitrogen doping of multi-walled carbon nanotubes (CNTs) was achieved by the carbonization a polyaniline (PANI) coating. First, CNTs were partially oxidized with KMnO4 to obtain oxygen-containing functional groups. Depending on loading, thin layers birnessite-type MnO2 (10 wt% and 30 wt%) obtained subsequent thermal decomposition. CNT-supported then used for oxidative polymerization aniline in acidic solution, resulting PANI-coated finally heated at 550 degrees C 850 inert gas. The samples...

ORR MNC, FTW! Mesoporous nitrogen-rich carbon (MNC) materials are synthesized by using polymer-loaded SBA-15 pyrolyzed at different temperatures. The activity and stability of the catalysts in oxygen reduction reaction (ORR) investigated cyclic voltammetry rotating-disk electrode measurements. MNC material 800 °C exhibits a high electrocatalytic towards alkaline medium.

A novel sandwich polyoxometalate (POM) Na12[WCo3(H2O)2(CoW9O34)2] and poly(vinylimidazolium) cation [PVIM+] in combination with nitrogen-doped carbon nanotubes (NCNTs) was developed for a highly selective ultrasensitive detection of dopamine. Conductively efficient heterogenization Co5POM catalyst by PVIM over NCNTs provides the synergy between PVIM–POM as conductive support which enhances electron transport at electrode/electrolyte interface eliminates interference ascorbic acid (AA)...

Durable multifunctional electrocatalysts with zero emission and high catalytic activity are desirable for environmentally benign clean energy technologies such as water-splitting devices, fuel cells, rechargeable metal–air batteries. Herein, we investigate a new antisite disordered polycrystalline double-perovskite oxide Ca2FeRuO6 (CFR) material activity. This makes it remarkable electrocatalyst excellent stability in highly alkaline (1 M KOH) medium oxygen reduction reaction (ORR),...

The evolution of an effective oxygen electrocatalyst is great importance for the widespread application Zn-air batteries but remains immense challenge. Thus, efficient catalyst toward reaction and reduction (OER ORR) highly essential high-performance batteries. Here, we have reported bifunctional nickel iron phosphide/phosphate (NiFeP/Pi) catalysts with various Ni/Fe ratios electrocatalysis in alkaline media. These are active OER ORR, wherein NiFe(1:2)P/Pi exhibits a low overpotential 0.21 V...

NiCu–MoS 2 shows remarkable electrocatalytic activity towards H S electrolysis and provides a promising route for easy sulfur recovery energy saving production compared to O electrolysis.

Multifunctional nanorod embedded wheat-grain CoFe(3:1)S 2 was synthesized in a simple single-step hydrothermal reaction and demonstrated outstanding performance Zn–air batteries overall water splitting.

Electrochemical dinitrogen (N2 ) reduction to ammonia (NH3 coupled with methanol electro-oxidation is presented in the current work. Here, oxidation reaction (MOR) proposed as an alternative anode oxygen evolution (OER) accomplish electrons-induced of N2 NH3 at cathode and alkaline media thereby reducing overall cell voltage for production. Cobalt pyrophosphate micro-flowers assembled by nanosheets are synthesized via a surfactant-assisted sonochemical approach. By virtue structural...

Electrochemical dinitrogen reduction (NRR) has riveted substantial attention as a greener method to synthesize ammonia (NH3) under ambient conditions. Here, B, N-containing carbon catalysts with discrete morphology were synthesized from the metal–organic framework-ionic liquid (MOF-IL) composite for NRR in neutral electrolyte medium (pH = 7). Morphology-dependent activity is witnessed, wherein C-BN@600 nanotubular able achieve high NH3 yield rate of 204 μg h–1 mgcat–1 and an F.E. 16.7% TOF...

Energy efficient glucose assisted hydrogen production over NiMn( x : y )O n /OCNT with a selective formation of glucaric acid 62.8% F.E. at 1.3 V vs. RHE.

Chemical industries employing Cl 2 as a prime reactant are producing large amount of HCl byproduct. Electrochemical conversion it back to can be an energy efficient strategy for reducing the load intensive chlor-alkali industries.

Improved electrocatalytic activity and selectivity for the reduction of H2O2 were obtained by electrodepositing Pd-Pt Pd-Au on spectrographic graphite from solutions containing salts two metals at varying ratio. The resulting binary codeposits was evaluated means redox-competition mode scanning electrochemical microscopy (SECM) voltammetric methods. In a potential range 0 to -600 mV (vs. Ag/AgCl/3 M KCl) pH 7.0 in 0.1 phosphate citrate buffer, both substantially improved as compared with...

A novel MnWO₄ oxygen reduction catalyst was morphologically tuned forming a bird feather-like morphology maximizing the active-site distribution for an efficient ORR.

A simple and cost-effective approach has been explored to design monophasically pure facet-controlled CoS₂ octahedra with intrinsic carbon for enhanced oxygen reduction electrocatalysis under acidic conditions.

Energy storage and conversion driven by electro- or photocatalyst is a highly exciting field of research, generations effective durable oxide catalysts have received much attention in this field. Here, we report A-site lanthanum-doped oxygen-rich quinary CaLaScRuO6+δ synthesized adopting the solid-state reaction method characterized various techniques such as powder X-ray diffraction, neutron energy-dispersive spectroscopy, inductively coupled plasma-atomic emission spectrometry, Raman...

An ultrasensitive novel NiFeP based flexible electrochemical sensor was developed for highly selective detection of dopamine.