A Z-scheme BiYO/g-CN heterojunction photocatalyst for the degradation of organic pollutants under visible light irradiation.

Photocatalysis is one of the fascinating fields for the wastewater treatment. In this regard, the present study deals with an effective visible light active BiYO/g-CN heterojunction nanocomposite photocatalyst with various ratios of BiYO and g-CN (1:3, 1:1 and 3:1), synthesised by a wet chemical approach. The as-synthesised nanocomposite photocatalysts were investigated via different physicochemical approaches like Fourier transform infrared (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), transmission electrons microscopy (TEM), UV-vis diffuse reflectance spectroscopy (DRS), photoluminescence (PL) and photoelectrochemical studies to characterise the crystal structure, morphology, optical absorption characteristics and photoelectrochemical properties.

Construction of direct FeMoO/g-CN-2D/2D Z-scheme heterojunction with enhanced photocatalytic treatment of textile wastewater to eliminate the toxic effect in marine environment.

A novel FeMoO/g-CN-2D/2D Z-scheme heterojunction photocatalyst was prepared via wet chemical method. The observed structural morphology of FeMoO/g-CN reveals the 2D-iron molybdate (FeMoO) nanoplates compiled with the 2D-graphitic carbon nitride (g-CN) nanosheets like structure. The photocatalytic activity of the g-CN, FeMoO, and FeMoO/g-CN composites were studied via the degradation of Rhodamine B (RhB) as targeted textile dye under visible light irradiation (VLI).

Construction of direct Z-scheme g-CN/BiYWO heterojunction photocatalyst with enhanced visible light activity towards the degradation of methylene blue.

Construction of the Z-scheme heterojunction photocatalyst achieved highly improved photocatalytic ability by its high redox ability of the photoinduced e-h pairs. In the study, Z-scheme g-CN/BiYWO heterojunction photocatalyst is prepared by the single-step hydrothermal method. Further, its photocatalytic ability was assessed by degrading methylene blue under visible light exposure.

A facile synthesis of visible light driven NiVO nano-cube/BiVO nanorod composite photocatalyst with enhanced photocatalytic activity towards degradation of acid orange 7.

Photocatalysis is one of the promising method to degrade harmful organic pollutants under visible light exposure. In this work, a novel NiVO/BiVO nanocomposite has been prepared by one-pot hydrothermal method, and investigated through X-ray diffraction, FT-IR, UV-visible diffuse reflectance spectroscopy, scanning and transmission electron microscopy and photoluminescence techniques. Subsequently, the photocatalytic performance of NiVO/BiVO nanocomposite has been examined by degrading AO7 under visible light illumination.

One-step synthesis of rod-on-plate like 1D/2D-NiMoO/BiOI nanocomposite for an efficient visible light driven photocatalyst for pollutant degradation.

Visible light active 1D/2D-NiMoO/BiOI nanocomposite photocatalyst has been constructed by single step solvothermal method. Various compositions of NiMoO/BiOI nanocomposites are prepared by loading different amounts of nickel molybdate (NiMoO) (1, 2, 3 wt%) to the bismuth oxy iodide (BiOI) and investigated by XRD, FTIR, SEM, EDAX, TEM, UV-vis DRS, and PL analysis. Among the as-prepared photocatalysts, 1 wt% NiMoO incorporated BiOI (NMBI-1) showed superior photocatalytic activity with a rate constant of 0.

A new 5-bromoindolehydrazone anchored diiodosalicylaldehyde derivative as efficient fluoro and chromophore for selective and sensitive detection of tryptamine and F ions: Applications in live cell imaging.

A novel indole hydrazone tagged moiety, 2-((5-bromo-1H-indol-2-yl) methylene) hydrazono) methyl)-4, 6-diiodophenol (BHDL) has been developed for the selective and sensitive detection of biogenic tryptamine and F ions. The binding dexterity of probe BHDL towards F/tryptamine (TryptA) has been investigated by UV-visible/fluorescence spectroscopy. In the presence of TryptA, probe exhibits strong enhancement in the emission band at 433 nm and the band at 555 nm underwent a blue shift accompanied by a decrease in intensity by the inhibition of Excited State Intramolecular Proton Transfer (ESIPT) on BHDL.

Solvent-free benzylic oxidation of aromatics over Cu(II)-containing propylsalicylaldimine anchored on the surface of mesoporous silica catalysts.

A sustainable method was used to produce aromatic ketones by the solvent-free benzylic oxidation of aromatics over mesoporous Cu(II)-containing propylsalicylaldimine anchored on the surface of Santa Barbara Amorphous type material-15 (CPSA-SBA-15) catalysts. For comparison, mesoporous Cu(II)-containing propylsalicylaldimine anchored with Mobil Composition of Matter-41 (CPSA-MCM-41) was assessed for these reactions under similar reaction conditions. The washed CPSA-SBA-15(0.

Novel star-shaped D-π-D-π-D and (D-π)-D-(π-D) anthracene-based hole transporting materials for perovskite solar cells.

Three types of novel star-shaped molecular architectures, D-π-D-π-D and (D-π)-D-(π-D) anthracene (ANTTPA, AOME, AOHE) based hole transporting materials, are designed for hybrid perovskite solar cells using the Gaussian 09 computation program with the B3LYP/6-31g (d, p) basis set level. The HOMO energy level of the designed materials has a higher HOMO energy level compared to the perovskite HOMO energy level, which is more facile for hole transport from the hole transporting layer to the oxidized perovskite layer. Thereafter, anthracene-based derivatives were synthesized from Buchwald-Hartwig and Mizoroki-Heck cross coupling reactions.

A novel pyrazole bearing imidazole frame as ratiometric fluorescent chemosensor for Al/Fe ions and its application in HeLa cell imaging.

New pyrazole bearing imidazole derivative was successfully synthesized and thoroughly characterized by various spectroanalytical techniques. The sensor DIBI shows a highly selective and sensitive fluorescent response with the addition of Al/Fe ions in acetonitrile-water mixture. The strong fluorescent molecule exhibits a notable ratiometric emissions at 462 nm and 470 nm for Al and Fe ions, respectively (λ = 280 nm).

A highly sensitive and selective Schiff-base probe as a colorimetric sensor for Co and a fluorimetric sensor for F and its utility in bio-imaging, molecular logic gate and real sample analysis.

In this work, we designed a novel Schiff-base probe from the condensation reaction of 3,5-diiodosalicylaldehyde with isoniazid. Treatment of the sensor molecule with different metal ions like K, Ba, Ca, Mg, Fe, Mn, Co, Cu, Cd, Ni, Hg, Zn, Pb and Al in visual inspection and absorption measurements explained its colorimetric sensing ability. The sensor DISN displays a remarkable color variation from pale yellow to brownish-orange towards Co ion.

Turn-on Fluorescence Chemosensor for Zn Ion Using Salicylate Based Azo Derivatives and their Application in Cell-Bioimaging.

The synthesis and optical studies of salicylate based azo derivatives (DPSAD and IPSAD) are reported. The receptors act as a versatile fluorogenic chemosensor for Zn causing a selective enhancement of fluorescence over other competing cations. The complex formed between receptors and Zn are identified on the basis of absorption and fluorescence titration and further confirmed by ESI-MS.

Execution of julolidine based derivative as bifunctional chemosensor for Zn and Cu ions: Applications in bio-imaging and molecular logic gate.

A simple julolidine based chemosensor (JT) was designed and synthesized by single condensation step. JT displayed excellent selectivity and sensitivity with on-off responses towards Zn and Cu over other biologically relevant metal ions in aqueous media. Upon addition of Zn ions, JT exhibited a significant blue shift in emission followed by turn-on enhancement while with Cu, the fluorescence intensity of JT was completely vanished.

Highly enantioselective asymmetric Henry reaction catalyzed by novel chiral phase transfer catalysts derived from cinchona alkaloids.

A new type of di-site chiral phase transfer catalyst has been designed and synthesized from cinchona alkaloids as a chiral precursor. The prepared catalysts are applied in the asymmetric Henry reaction to a wide range of aldehydes using mild concentrations of a base and solvent and under room-temperature conditions. Under the optimized reaction conditions, the highest chemical yields up to 99% along with an excellent enantiomeric excess (ee) up to 99% were obtained using the prepared cinchona alkaloid based chiral phase transfer catalysts.

Functionalized silicate sol-gel-supported TiO2-Au core-shell nanomaterials and their photoelectrocatalytic activity.

The N-[3-(trimethoxysilyl)propyl]ethylenediamine (EDAS) derived silicate matrix supported core-shell TiO(2)-Au nanoparticles (EDAS/(TiO(2)-Au)(nps)) were prepared by NaBH(4) reduction of HAuCl(4) precursor on preformed TiO(2) nanoparticles in the presence of EDAS monomer. The core-shell (TiO(2)-Au)(nps) nanoparticles were stabilized by the amine functional group of the EDAS silicate sol-gel network. The potential application of this EDAS/(TiO(2)-Au)(nps) modified electrode toward the photoelectrochemical oxidation of methanol was explored.