Ni₃Se₂has been identified as a high-efficiency oxygen evolution catalyst with low onset potential and extended stability under alkaline conditions.

Carbon nanotubes were discovered soon after the successful laboratory synthesis of fullerenes. Since their discovery in 1991, there has been intensive research activity area carbon nanotubes, not only because fascinating structural features and properties, but also potential technological applications. There is increasing experimental evidence to show that may find use nanoelectronic devices, displays, hydrogen storage. In this article, we discuss various important aspects related synthesis,...

Carbon nanotubes were discovered in 1991. It was soon recognized that layered metal dichalcogenides such as MoS2 could also form fullerene and nanotube type structures, the first synthesis reported 1992. Since then, a large number of chalcogenides other materials have been shown to their structures investigated by electron microscopy. Inorganic constitute an important family nanostructures with interesting properties potential applications. In this article, we discuss progress made novel...

Ni₃Te₂ has been reported as a highly efficient OER electrocatalyst with an overpotential of 180 mV at 10 mA cm⁻² and also showing HER catalytic activity in alkaline medium.

A manganese selenide and multiwalled carbon nanotube-based composite shows promising bifunctional electrocatalytic activity for the oxygen evolution reduction reactions with superior stability lower overpotential both OER ORR.

Trisulfide molybdenum complexes have been employed to produce nanotubes by simple heating in a stream of hydrogen. Bamboo-like stacking (see Figure) was observed, suggesting that the stimulus for growth MoS2 is similar their carbon equivalents. The wide experience gained with trisulfide directs this technique towards preparation other layered sulfide nanotubes, although precursors are also shown be successful.

Nanorods of several oxides, with diameters in the range 10–200 nm and lengths upto a few microns, have been prepared by templating against carbon nanotubes. The oxides include V2O5, WO3, MoO3 Sb2O5 as well metallic MoO2, RuO2 IrO2. nanorods tend to be single-crystalline structures. Nanotube structures also obtained RuO2.

Nanowires of Au, Ag, Pt, and Pd (1.0−1.4 nm diam) have been produced in the capillaries single-walled carbon nanotubes (SWNTs). The nanowire is single-crystalline some cases. Dispersions nanowires alcohol show longitudinal plasmon absorption bands at different wavelengths, suggesting presence a distribution aspect ratios. A novel phenomenon involving intercalation metal layers (∼0.5 thick) intertubular space SWNT bundles has observed. SWNTs decorated by nanoparticles are formed preparations.

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTNew Metal Disulfide NanotubesManashi Nath and C. N. R. RaoView Author Information Chemistry Physics of Materials Unit CSIR Centre Of Excellence In Jawaharlal Nehru for Advanced Scientific Research Jakkur P.O., Bangalore 560 064, India Solid State Structural Indian Institute Science, 012, Cite this: J. Am. Chem. Soc. 2001, 123, 20, 4841–4842Publication Date (Web):April 25, 2001Publication History Received13 February 2001Published online25...

Nanotubes and nanowires of CdSe CdS have been obtained from solutions containing a surfactant such as Triton 100-X. They characterized by x-ray diffraction, electron microscopy, optical spectroscopy.

Electrodeposited Co7Se8 nanostructures exhibiting flake-like morphology show bifunctional catalytic activity for oxygen evolution and hydrogen reaction (OER HER, respectively) in alkaline medium with long-term durability (>12 h) high Faradaic efficiency (99.62%). In addition to low Tafel slope (32.6 mV per decade), the OER electrocatalyst also exhibited very overpotential achieve 10 mA cm(-2) (0.26 V) which is lower than other transition metal chalcogenide based electrocatalysts reported...

Designing high-efficiency water oxidation catalysts from earth-abundant resources has attracted significant attention in the last couple of years owing to potential application this technology several energy conversion devices. Among transition metals, copper is one cheapest nonprecious element which can enhance electrocatalytic activity due heavily occupied d-orbitals. In article we have shown selenide for first time reaction. The phases were synthesized by direct electrodeposition on...

Ultrasmall FeP nanoparticles have been reported as an efficient oxygen evolution electrocatalyst in alkaline medium with low onset potential for and require overpotential to reach 10 mA cm⁻² exchange current density.

Herein we have shown that electrodeposited NiSe2 can be used as a bifunctional electrocatalyst under alkaline conditions to split water at very low potential by catalyzing both oxygen evolution and hydrogen reactions anode cathode, respectively, achieving high electrolysis energy efficiency exceeding 80% considerably current densities (100 mA cm-2). The OER catalytic activity well surpasses any previously reported in medium of an electrolyzer using state-of-the-art Pt RuO2 the HER catalyst,...

CoNi2Se4 with a vacancy-ordered spinel structure shows excellent bifunctional electrocatalytic activity for water splitting in alkaline medium producing 10 mA cm-2 at cell voltage of 1.61 V. For OER, an overpotential 160 mV was needed which is one the lowest overpotentials reported to date.

Designing high-efficiency electrocatalysts for water oxidation has become an increasingly important concept in the catalysis community due to its implications clean energy generation and storage. In this respect transition-metal-doped mixed-metal selenides incorporating earth-abundant elements such as Ni Fe have attracted attention their unexpectedly high electrocatalytic activity toward oxygen evolution reaction (OER) with low overpotential alkaline medium. article, quaternary selenide...

(Co_0.21Ni_0.25Cu_0.54)₃Se₂ has been identified as high-efficiency OER electrocatalyst with a low overpotential of 272 mV at 10 mA cm⁻².

Nonprecious metal-based catalysts for full water splitting are still being sought after by several groups of researchers, owing to their promising practical application in energy conversion devices. In this article, nanostructured CuCo2Se4 comprising earth-abundant elements have been reported exhibit superior bifunctional electrocatalytic activity both oxygen evolution reaction (OER) and hydrogen (HER) under alkaline conditions. The electrocatalyst with a spinel structure type requires low...

Developing low-cost electrocatalysts with high efficiency for water splitting is a critical task to make this technology viable large-scale clean energy generation. Transition metal selenides, comprising earth abundant elements, such as Fe, Co and Cu, have gained attention superior oxygen evolution reaction (OER) in the alkaline medium. In article, we systematically investigated of OER catalytic activity function composition series Fe–Co–Cu quaternary selenides by exploring trigonal phase...

Cobalt telluride has been identified as an efficient multifunctional electrocatalyst for oxygen and hydrogen evolution reactions reduction reaction in alkaline medium. Both hydrothermally synthesized electrodeposited, CoTe CoTe2 show electrocatalytic activities. shows better efficiency OER with a low Tafel slope (43.8 mV dec–1) lower overpotential (200 mV) at 10 mA cm–2 compared to CoTe2. DFT studies have also performed which revealed that showed higher adsorption energy intermediate −OH on...

Thermal decomposition of the respective trisulfides in a reducing (H2/inert gas) atmosphere has enabled nanotubes HfS2, ZrS2, and TiS2 to be synthesized characterized. The dimensions formed depend on Group 4 metal used. transmission electron micrograph image shows nanotubular structures HfS2 with outer diameters 55–60 nm inner core 17–30 nm.

A CoNi₂Se₄–rGO nanocomposite fabricated on Ni foam shows excellent efficiency for non-enzymatic glucose sensing at low applied potential.