Cuprospinel decorated biopolymer functionalized CNFs based electrocatalytic platform integrated with grid search optimized neural network for detection of vital amino acid in beverages.

An electrocatalytic platform based on a novel nanocomposite integrated with a grid search-optimized neural network (GSNN) was proposed for intelligent sensing of tryptophan. The cuprospinel-decorated chitosan-functionalized carbon nanofibers (CuFeO/Chit-CNFs) fabricated on a disposable electrode revealed exceptional electrocatalytic activity with a low detection limit (2 nM) and good sensitivity (79.18 μAμM cm) over a broad linear range (0.

Ultrasensitive detection and photocatalytic degradation of polyketide drug tetracycline in environment and food samples using dual-functional Ag doped zinc ferrite embedded functionalized carbon nanofibers.

The efficient degradation and accurate quantification of tetracycline in environment and food samples is pivotal for ensuring public health and safety by monitoring potential contamination and maintaining regulatory standards. Hence, in this study, photocatalytic degradation of tetracycline and its electrochemical detection in environment and food samples based on dual-functional silver-doped zinc ferrite nanoparticles embedded chitosan-functionalized carbon nanofibers fabricated on a screen-printed carbon electrode (AgZFO/CHIT-CNF/SPCE) is presented. A hydrothermal method was used in the synthesis of Ag-doped ZFO, and chitosan was functionalized on the CNF surface using a swift and cost-effective chemical modification process of carboxyl groups.

Ultrasensitive Electrochemical Detection and Plasmon-Enhanced Photocatalytic Degradation of Rhodamine B Based on Dual-Functional, 3D, Hierarchical Ag/ZnO Nanoflowers.

The sensitive detection and degradation of synthetic dyes are pivotal to maintain safety owing to the adverse side effects they impart on living beings. In this work, we developed a sensitive electrochemical sensor for the nanomolar-level detection of rhodamine B (RhB) using a dual-functional, silver-decorated zinc oxide (Ag/ZnO) composite-modified, screen-printed carbon electrode. The plasmon-enhanced photocatalytic degradation of organic pollutant RhB was also performed using this nanocomposite prepared by embedding different weight percentages (1, 3, and 5 wt%) of Ag nanoparticles on the surface of a three-dimensional (3D), hierarchical ZnO nanostructure based on the photoreduction approach.

Nanomolar detection of food additive tert-butylhydroquinone in edible oils based on novel ternary metal oxide embedded β-cyclodextrin functionalized carbon black.

It is pivotal to precisely detect food preservatives to ascertain food quality and safety. In this work, we report the sensitive electrochemical detection of widely used cytotoxic food preservative tert-butylhydroquinone (TBHQ). A novel nanocomposite was sonochemically prepared by embedding ternary metal oxide (TMO) comprising ZnO, CuO, and MgO in β-cyclodextrin (β-CD) functionalized carbon black (CB).

Synthesis of amine-functionalized multi-walled carbon nanotube/3D rose flower-like zinc oxide nanocomposite for sensitive electrochemical detection of flavonoid morin.

A novel composite consisting of three dimensional (3D) hierarchical rose flower-like zinc oxide decorated with amine-functionalized multi-walled carbon nanotubes (NH-MWCNT/ZnO) was synthesized and applied to the effective electrochemical detection of morin, a flavonoid with health-promoting and therapeutic activities. We have used a hydrothermal technique to synthesize the 3D rose flower-like ZnO, which was then composited with NH-MWCNT through a sonochemical method. The morphology and structure of the prepared materials were characterized using scanning electron microscopy (SEM), elemental mapping, X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area analysis, Fourier-transform infrared spectroscopy (FT-IR), and Raman spectroscopy.

Sonochemical synthesis of iron-graphene oxide/honeycomb-like ZnO ternary nanohybrids for sensitive electrochemical detection of antipsychotic drug chlorpromazine.

We report a novel electrochemical sensor for the sensitive and selective determination of the antipsychotic drug chlorpromazine (CPZ) based on the iron (Fe) nanoparticles-loaded graphene oxide (GO-Fe)/three dimensional (3D) honeycomb-like zinc oxide (ZnO) nanohybrid modified screen printed carbon electrode (SPCE). The 3D hierarchical honeycomb-like ZnO was synthesized using a novel aqueous hydrothermal method and the GO-Fe/ZnO nanohybrid was prepared based on an inexpensive and fast sonochemical method using a high-intensity ultrasonic bath (Delta DC200H, 200 W, 40 KHz). Characterizations including scanning electron microscopy, elemental mapping, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and Raman spectroscopy were carried out as part of this work.

Electrochemical Deposition of ZnO Porous Nanoplate Network for Dye-Sensitized Solar Cells.

Mesoporous ZnO films composed of interconnected porous nanoplates were prepared by an electrochemical deposition-pyrolytic conversion approach and constructed into the photoanodes of dyesensitized solar cells (DSSCs). Precursor nanoplates grown on conducting glass substrates were transformed into ZnO porous nanoplates by calcination at 400 °C for 1 h. Correlations between the ZnO film thickness and the electrochemical deposition time were determined in order to prepare ZnO films of various thicknesses and to study the effect of the film thickness on the photovoltaic performance of DSSCs.

Size-Dependent Localized Surface Plasma Resonance of Au Nanoparticles in Au/ZnO Photoanodes for Dye-Sensitized Solar Cells.

The size effect of Au nanoparticles on plasmonic ZnO dye-sensitized cells (DSSCs) was investigated. Different sized Au nanoparticles (~5 nm, 10 nm, and 20 nm) were directly deposited on ZnO nanostructures via an in situ reduction technique. The size and the loading of Au nanoparticle were controlled by varying the amount of reducing agent and the reaction time, respectively.

Optimization of dye adsorption time and film thickness for efficient ZnO dye-sensitized solar cells with high at-rest stability.

Photoelectrodes for dye-sensitized solar cells were fabricated using commercially available zinc oxide (ZnO) nanoparticles and sensitized with the dye N719. This study systematically investigates the effects of two fabrication factors: the ZnO film thickness and the dye adsorption time. Results show that these two fabrication factors must be optimized simultaneously to obtain efficient ZnO/N719-based cells.

Enhancing performance of ZnO dye-sensitized solar cells by incorporation of multiwalled carbon nanotubes.

A low-temperature, direct blending procedure was used to prepare composite films consisting of zinc oxide [ZnO] nanoparticles and multiwalled carbon nanotubes [MWNTs]. The mesoporous ZnO/MWNT films were fabricated into the working electrodes of dye-sensitized solar cells [DSSCs]. The pristine MWNTs were modified by an air oxidation or a mixed acid oxidation treatment before use.

Functional and physical interactions between components of the Prp19p-associated complex.

The Prp19p-associated complex is essential for the yeast pre-mRNA splicing reaction. The complex consists of at least eight protein components, but is not tightly associated with spliceosomal snRNAs. By a combination of genetic and biochemical methods we previously identified four components of this complex, Ntc25p, Ntc85p, Ntc30p and Ntc20p, all of them being novel splicing factors.