Facile and Highly Selective Deprotection of Aryl Propionates/Acetates Using a Supported Lewis Acid Catalyst (20% InCl/MCM-41).

The selective deprotection of substituted aryl esters like acetates and propionates in the presence of different electron-donating and -withdrawing functional groups to the corresponding phenols in good yields was reported using the Lewis acid supported solid acid catalyst 20 InCl/MCM-41 prepared by the wet impregnation method. The textural and microscopic properties of the catalyst were studied, which revealed a high degree of dispersion of InCl over MCM-41, promising quantification of Lewis acidity, and well-ordered honeycomb structure. The methodology was further explored for the selective deprotection of acetates and propionates in the presence of substituted amides that remain unaltered.

Simplistic approach to formulate an ionophore-based membrane and its study for nitrite ion sensing.

A polymeric membrane based on a ,'-bis(salicylidene)ethylenediaminocobalt(ii) complex as a cobalt ionophore (CI) was fabricated and optimized for nitrite ion sensing application. The membrane contained CI, 2-nitrophenyl octyl ether (2-NPOE) as a plasticizer and hexadecyl trimethyl ammonium bromide (HTAB) as a cationic additive in a polyvinyl chloride (PVC) matrix. The Nernstian slope (-0.

Nanostructured electroless Ni deposited SnO for solar hydrogen production.

Herein, Ni-decorated SnO (Ni@SnO) nanostructures have been synthesized using SnO as a matrix a simple electroless deposition method for the generation of hydrogen, a potent near-future fuel. XRD analysis confirmed the generation of rutile SnO in Ni@SnO. FESEM and FETEM imaging exhibited the formation of SnO nanoparticles with a size of 10-50 nm, which are deposited with Ni nanoparticles (5-7 nm) and intermittent films (thickness 1-2 nm).

Solid state engineering of BiS/rGO nanostrips: an excellent electrode material for energy storage applications.

The study presents a novel, one-pot, and scalable solid-state reaction scheme to prepare bismuth sulphide (BiS)-reduced graphene oxide (rGO) nanocomposites using bismuth oxide (BiO), thiourea (TU), and graphene oxide (GO) as starting materials for energy storage applications. The impact of GO loading concentration on the electrochemical performance of the nanocomposites was investigated. The reaction follows a diffusion substitution pathway, gradually transforming BiO powder into BiS nanostrips, concurrently converting GO into rGO.

synthesis of g-CN/TiCT nano-heterostructures for enhanced photocatalytic H generation water splitting.

Herein, we demonstrated the synthesis of g-CN/TiCT nano-heterostructures for hydrogen generation under UV visible light irradiation. The formation of the g-CN/TiCT nano-heterostructures was confirmed powder X-ray diffraction and supported by XPS. The FE-SEM images indicated the formation of layered structures of MXene and g-CN.

Electroless Ni plated nanostructured TiO as a photocatalyst for solar hydrogen production.

Herein, we have demonstrated a facile electroless Ni coated nanostructured TiO photocatalyst for the first time. More significantly the photocatalytic water splitting shows excellent performance for hydrogen production which is hitherto unattempted. The structural study exhibits majorly the anatase phase along with the minor rutile phase of TiO.

Ni loaded SnS hexagonal nanosheets for photocatalytic hydrogen generation water splitting.

Herein we have prepared the Ni-decorated SnS nanosheets with varying concentrations of Ni from 1 to 10 mol% (1, 2.5, 5, and 10 mol%) and studied their various physicochemical and photocatalytic properties. The chemical reduction technique was utilized to load the Ni nanoparticles on SnS nanosheets.

Highly crystalline anatase TiO nanocuboids as an efficient photocatalyst for hydrogen generation.

Highly crystalline anatase titanium dioxide (TiO) nanocuboids were synthesized a hydrothermal method using ethylenediamine tetraacetic acid as a capping agent. The structural study revealed the nanocrystalline nature of anatase TiO nanocuboids. Morphological study indicates the formation of cuboid shaped particles with thickness of ∼5 nm and size in the range of 10-40 nm.

Nanostructured N doped TiO efficient stable catalyst for Kabachnik-Fields reaction under microwave irradiation.

Herein, we report nitrogen-doped TiO (N-TiO) solid-acid nanocatalysts with heterogeneous structure employed for the solvent-free synthesis of α-aminophosphonates through Kabachnik-Fields reaction. N-TiO were synthesized by direct amination using triethylamine as a source of nitrogen at low temperature and optimized by varying the volume ratios of TiCl, methanol, water, and triethylamine, under identical conditions. An X-ray diffraction (XRD) study showed the formation of a rutile phase and the crystalline size is 10 nm.

ZnCl loaded TiO nanomaterial: an efficient green catalyst to one-pot solvent-free synthesis of propargylamines.

One-pot green synthesis of propargylamines using ZnCl loaded TiO nanomaterial under solvent-free conditions has been effectively accomplished. The aromatic aldehydes, amines, and phenylacetylene were reacted at 100 °C in the presence of the resultant catalyst to form propargylamines. The nanocrystalline TiO was initially synthesized by a sol-gel method from titanium(iv) isopropoxide (TTIP) and further subjected to ZnCl loading by a wet impregnation method.

Synthesis of silver-loaded ZnO nanorods and their enhanced photocatalytic activity and photoconductivity study.

Herein, we synthesized ZnO nanorods using a solvothermal reaction technique at 200 °C for 24 h, and the prepared ZnO nanorods were decorated with silver (Ag) nanoparticles to enhance their photocatalytic activity. The Ag nanoparticles were photochemically deposited on the ZnO rods with varying molar concentrations (from 0.5 to 10 mol%), and their various physicochemical properties were studied.

Nanocrystalline Cu-ZnO as an Green Catalyst for One Pot Synthesis of 4,4'-((phenyl)methylene)bis(3-methyl-1-phenyl-1H-pyrazol-5-ol) Derivatives.

Synthesis of 4,4'-((phenyl)methylene)bis(3-methyl-1-phenyl-1H-pyrazol-5-ol) derivatives was successively carried out using Cu doped ZnO nanomaterials. The nanocrystalline Cu-ZnO was obtained by decomposing as-synthesized copper-zinc oxalate intermediate at 520 °C. The prepared Cu-ZnO nanostructured catalyst was characterized with FTIR, X-ray diffraction, field emission scanning electron microscope and electron diffraction techniques.

Enhanced performance of PTB7-Th:PCBM based active layers in ternary organic solar cells.

The present study aims at understanding the role of incorporating CuS nanocrystals (NCs) as a third component in ternary organic solar cells. Ternary photoactive blends consisting of conjugated polymer poly[4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-;4,5-']dithiophene-2,6-diyl--(4-(2-ethylhexyl)-3-fluorothieno[3,4-]thiophene-)-(2-carboxylate-2-6-diyl)] (PTB7-Th), fullerene derivative phenyl-C-butyric acid methyl ester (PCBM) and different wt% of CuS NCs were formulated and were employed to fabricate ternary OSCs having a device architecture of ITO/ZnO/PTB7-Th:CuS NCs:PCBM/MoO/Ag. It has been observed that with the addition of 3 wt% of CuS NCs, an improved power conversion efficiency (PCE) of 8.

Sol-Gel Assisted Isotropic Morphological Progression in Nanostructured MoO₃ and Allied Investigations on Photocatalytic Dye-Degradation.

We report -morphology oriented facile yet scalable route to synthesize 1D (nanorod) and 2D (nanobelt) MoO₃ nanostructures at gram scale using conventional as well as sonochemistry assisted sol-gel technique. The structural, morphological and optical properties of the samples can be befittingly altered by varying the synthesis protocol. The resultant orthorhombic MoO₃ nanomorphs demonstrated efficient and expeditious photocatalytic degradation of the pollutant dye, Methylene Blue (MB).

Hierarchical nanostructures of nitrogen-doped molybdenum sulphide for supercapacitors.

Flower-like nanostructures of molybdenum disulphide (MoS) have been effectively synthesised by the hydrothermal method and further doped with nitrogen using varying concentrations of urea. The formed hierarchical nanostructures are characterised by spectroscopy as well as electrochemical techniques. The structural analysis confirms the formation of a hexagonal MoS crystal structure.

Nanostructured N-doped orthorhombic NbO as an efficient stable photocatalyst for hydrogen generation under visible light.

The synthesis of orthorhombic nitrogen-doped niobium oxide (NbON) nanostructures was performed and a photocatalytic study carried out in their use in the conversion of toxic HS and water into hydrogen under UV-Visible light. Nanostructured orthorhombic NbON was synthesized by a simple solid-state combustion reaction (SSCR). The nanostructural features of NbON were examined by FESEM and HRTEM, which showed they had a porous chain-like structure, with chains interlocked with each other and with nanoparticles sized less than 10 nm.

Swift tuning from spherical molybdenum microspheres to hierarchical molybdenum disulfide nanostructures by switching from solvothermal to hydrothermal synthesis route.

Herein, we report the synthesis of metallic molybdenum microspheres and hierarchical MoS nanostructures by facile template-free solvothermal and hydrothermal approach, respectively. The morphological transition of the Mo microspheres to hierarchical MoS nanoflower architectures is observed to be accomplished with change in solvent from ethylenediamine to water. The resultant marigold flower-like MoS nanostructures are few layers thick with poor crystallinity while spherical ball-like molybdenum microspheres exhibit better crystalline nature.

Novel functionality of organic 6,13-Pentacenequinone as a photocatalyst for hydrogen production under solar light.

6,13-Pentacenequinone (PQ), an intermediate for an organic semiconductor pentacene, was synthesized by single step solvent free solid state reaction at room temperature under ambient conditions which is hitherto unattempted. The phase purity has been confirmed by XRD and NMR. Optical study showed the absorption at 390 and 412 nm attributed to the π-π* and n-π* transitions, respectively.