Abstract Development of next‐generation sensor devices is gaining tremendous attention in both academia and industry because their broad applications manufacturing processes, food environment control, medicine, disease diagnostics, security defense, aerospace, so forth. Current challenges include the development low‐cost, ultrahigh, user‐friendly sensors, which have high selectivity, fast response recovery times, small dimensions. The critical demands these new sensors are typically...

Here, we report a new method to prepare graphene from graphite by the liquid phase exfoliation process with sonication using oxide (GO) as dispersant. It was found that GO nanosheets act surfactant mediated of into GO-adsorbed complex in aqueous solution, which separated an additional process. The preparation isolated single few layers is routinely achieved yield up higher than 40% initial material. prepared sheets showed high quality (C/O ∼ 21.5), low defect (ID/IG 0.12), and conductivity...

While direct nitridation of magnesium requires high temperatures, we demonstrate that an electrodeposited, metal surface can activate N 2 at close-to-ambient temperature, and the resulting material be converted into ammonium.

Carbon microsphere-supported Cu nanoparticles were fabricated, characterized, and applied for synthesis.

The lithium mediated reduction of N2 is one the only available approaches to electrochemical ammonia production at significant yields under ambient conditions. However, much remains be investigated about various processes and side reactions that are involved. Herein, we have examined effects parameters including electrode potential, convection, pressure, water content refine control process. We demonstrate a closely linear yield can maintained during experiments up 60 h in length, with...

We have investigated the rheology of concentrated oil-in-water emulsions stabilised by silanised silica nanoparticles. The behave like highly elastic solids in response to small, uniform strains. They become unstable and begin break down, however, on yielding. show that emulsion elasticity is correlated with salt concentration water hence particle aggregation at a given drop volume fraction. A supporting observation destabilisation favoured minimising attractive interactions between...

Abstract A new and simple method is developed to synthesize carbon microspheres decorated with iron sulfide nanoparticles for mercury ion removal from water. The synthesis based on carbonizing polystyrene–divinylbenzene-based iron(III) sulfate-loaded cation exchange resins between 500 1000 °C. phase composition, surface area, morphology of these materials are characterized by various spectroscopic diffraction techniques, including Mössbauer spectroscopy, powder X-ray diffraction, Raman...

The condensation of complex silicates with pyroxene and olivine composition under conditions prevailing in molecular clouds has been experimentally studied. For this purpose, species comprising refractory elements were forced to accrete on cold substrates representing the surfaces surviving dust grains interstellar medium. efficient formation amorphous homogeneous magnesium iron at temperatures about 12 K monitored by IR spectroscopy. gaseous precursors such processes medium are formed...

Abstract For the first time : Thiofulminic acid (HCNS), parent member of nitrile sulfide family reactive intermediates and potential interstellar species, was produced characterized by IR spectroscopy for time. HCNS generated in cryogenic matrices 254 nm UV irradiation 1,2,5‐thiadiazole (see figure). magnified image

The UV photolysis of dimethylcarbamoyl azide has been investigated in an argon matrix at cryogenic temperatures. products the were identified by infrared spectroscopy supported quantum-chemical calculations. Sequential formation dimethylamino isocyanate (Me2N-NCO), 1,1-dimethyldiazene (Me2N═N), and ethane was established. Therefore, major decomposition channel is as Me2NC(O)N3 → Me2N-NCO Me2N═N Me-Me, via consecutive N2, CO, N2 eliminations. Ground-state geometries, vibrational frequencies,...

The potential energy surface (PES) of the [C, N, F, S] system was investigated by quantum chemical and experimental methods. Seven minima were located on ground state PES density functional ab initio electronic structure calculations. Four these isomers, FSCN, FSNC, FCNS FNCS, have an acyclic structure, while other three, FC(NS), FS(CN) FN(SC), form a three-membered fluorine-substituted ring. Out seven theoretically predicted FC(NS) successfully prepared in low-temperature Ar Kr matrices...

The unstable acetonitrile N-sulfide molecule CH3CNS has been photolytically generated in inert solid argon matrix from 3,4-dimethyl-1,2,5-thiadiazole by 254-nm UV irradiation, and studied ultraviolet spectroscopy mid-infrared spectroscopy. is stable the to but decomposes CH3CN a sulfur atom when broad-band irradiation used. Chemiluminescence due S2 formation triplet atoms was detected on warming ∼20–25 K. ground-state structure potential uni- bimolecular reactions of are investigated using...

Redox flow batteries (RFBs) are one of the hopes for grid energy storage applications. Among various RFBs, vanadium redox battery (VRFB) has specific advantage deploying same element, i.e., in different oxidation states both negolyte and posolyte. However, its major unmet concern is poor charge retention during cycling, attributed to cross-contamination across separator. Perfluorosulfonic acid-based cation exchange membranes (CEMs) preferred separators VRFB. Nevertheless, negatively charged...

Nitrile sulfides, X – C≡N→S, are important transient species in organic synthesis and widely used for dipolar cycloaddition reactions. selenides have the potential to become dipolarophiles preparative chemistry, however, their chemistry is largely unexplored. This review article focuses on generation, spectroscopic identification, structure, synthetic applications of nitrile sulfides selenides. Keywords: selenides, synthesis, spectroscopy, applications, benzonitrile selenide, thermolysis,...

In the present work, which is aimed to monitor in situ electrochemical dissolution of tungsten by using a Flow-Type Scanning Droplet Cell Microscope (FT-SDCM) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS), novel results are reported. The anodic oxide growth its on surface W have been monitored situ. this current study show importance coupling experiments ICP-MS.