Influence of three different types of desensitizing agents on bond strength of etch-and-rinse and self-etch adhesive system on dentin: An study.

Aim: To determine the effect of three different dentin hypersensitivity treatment procedures on the microtensile bond strength of etch and rinse and self-etch adhesive system.

Materials And Methods: Eighty extracted intact human permanent lower premolars were decoronated, and dentin was exposed on the buccal surface. The teeth were randomly assigned to two experimental groups of 40 teeth each: etch and rinse system or self-etch system.

Metal-ion doping in metal-organic-frameworks: modulating the electronic structure and local coordination for enhanced oxygen evolution reaction activity.

The doping of metal-organic frameworks (MOFs) with metal-ions has emerged as a powerful strategy for enhancing their catalytic performance. Doping allows for the tailoring of the electronic structure and local coordination environment of MOFs, thus imparting on them unique properties and enhanced functionalities. This frontier article discusses the impact of metal-ion doping on the electronic structure and local coordination of MOFs, highlighting the effects on their electrocatalytic properties in relation to the oxygen evolution reaction (OER).

Europium oxide modified reduced graphene oxide composite for trace detection of hydrogen phosphate ions in soil samples.

The phosphate (PO) ion is a constituent of the environment, soil, plants, and animals. There should be a real-time and portable phosphate detection sensor. Herein we propose a colorimetry based sensitive method for hydrogen phosphate (HPO) ions detection using europium oxide modified reduced graphene oxide composite (EuO-RGO) and gold nanoparticles (Au NPs).

1-D arrays of porous MnCoO nanoneedles with an enhanced electrocatalytic activity toward the oxygen evolution reaction.

Developing effective electrocatalysts for the oxygen evolution reaction (OER) that are highly efficient, abundantly available, inexpensive, and environmentally friendly is critical to improving the overall efficiency of water splitting and the large-scale development of water splitting technologies. We, herein, introduce a facile synthetic strategy for depositing the self-supported arrays of 1D-porous nanoneedles of a manganese cobalt oxide (MnCoO: MCO) thin film demonstrating an enhanced electrocatalytic activity for OER in an alkaline electrolyte. For this, an MCO film was synthesized thermal treatment of a hydroxycarbonate film obtained from a hydrothermal route.

Escalating Catalytic Activity for Hydrogen Evolution Reaction on MoSe@Graphene Functionalization.

Developing highly efficient and durable hydrogen evolution reaction (HER) electrocatalysts is crucial for addressing the energy and environmental challenges. Among the 2D-layered chalcogenides, MoSe possesses superior features for HER catalysis. The attractions and high surface energy, however, stack the MoSe layers, resulting in a loss of edge active catalytic sites.

Accelerating glucose electrolysis on Cu-doped MIL-88B for an energy efficient anodic reaction in water splitting.

This work reports a promising and sustainable method for valorization of abundantly available biomass feedstocks to overcome the thermodynamic high energy barrier of the OER glucose electrolysis as a proxy anodic reaction, thereby driving the energy-efficient water splitting for green hydrogen generation. For this, a robust and efficient MIL-88B(Fe) based electrocatalyst is engineered Cu doping. The ultrasonically prepared Cu-doped@ MIL-88B ink when drop-cast on nickel foam (NF) produces thin nano-porous 2D-sheet like films having a thickness of 300 nm and demonstrates an excellent glucose oxidation reaction (GOR) with a lower potential of 1.

Tunning the Zeolitic Imidazole Framework (ZIF8) through the Wet Chemical Route for the Hydrogen Evolution Reaction.

Utilizing zeolitic imidazolate frameworks (ZIFs) poses a significant challenge that demands a facile synthesis method to produce uniform and nanometer-scale materials with high surface areas while achieving high yields. Herein, we demonstrate a facile and cost-effective strategy to systematically produce ZIF8 nanocrystals. Typically, ZIF8 nanocrystal synthesis involves a wet chemical route.

Cu@Fe-Redox Capacitive-Based Metal-Organic Framework Film for a High-Performance Supercapacitor Electrode.

A metal-organic framework (MOF) is a highly porous material with abundant redox capacitive sites for intercalation/de-intercalation of charges and, hence, is considered promising for electrode materials in supercapacitors. In addition, dopants can introduce defects and alter the electronic structure of the MOF, which can affect its surface reactivity and electrochemical properties. Herein, we report a copper-doped iron-based MOF (Cu@Fe-MOF/NF) thin film obtained via a simple drop-cast route on a 3D-nickel foam (NF) substrate for the supercapacitor application.

Evaluation of detrimental effects of impacted Mandibular third molars on adjacent second molars - A retrospective observational study.

Context: Mandibular impacted third molars are the most frequently impacted teeth in humans and can predispose the adjacent second molar to an array of detrimental effects such as caries, periodontitis, and cervical resorption thus the aim of this study was to determine the same.

Subjects And Methods: A retrospective observational cross-sectional study involving patients with orthopantomography presenting with impacted lower third molar. The type, depth, and level of impaction, the extent of caries, periodontal changes, and the presence of cervical resorption were assessed.

Flexible Organic-Inorganic Halide Perovskite-Based Diffusive Memristor for Artificial Nociceptors.

With the current evolution in the artificial intelligence technology, more biomimetic functions are essential to execute increasingly complicated tasks and respond to challenging work environments. Therefore, an artificial nociceptor plays a significant role in the advancement of humanoid robots. Organic-inorganic halide perovskites (OHPs) have the potential to mimic the biological neurons due to their inherent ion migration.

Bias-Modified Schottky Barrier Height-Dependent Graphene/ReSe van der Waals Heterostructures for Excellent Photodetector and NO Gas Sensing Applications.

Herein, we reported a unique photo device consisting of monolayer graphene and a few-layer rhenium diselenide (ReSe) heterojunction. The prepared Gr/ReSe-HS demonstrated an excellent mobility of 380 cm/Vs, current on/off ratio ~ 10, photoresponsivity (R ~ 74 AW @ 82 mW cm), detectivity (D ~ 1.25 × 10 Jones), external quantum efficiency (EQE ~ 173%) and rapid photoresponse (rise/fall time ~ 75/3 µs) significantly higher to an individual ReSe device (mobility = 36 cm Vs, Ion/Ioff ratio = 1.

Correction: Fabrication of FeO-incorporated MnO nanoflowers as electrodes for enhanced asymmetric supercapacitor performance.

Correction for 'Fabrication of FeO-incorporated MnO nanoflowers as electrodes for enhanced asymmetric supercapacitor performance' by Iqra Rabani , , 2022, https://doi.org/10.1039/D2DT01942F.

Fabrication of FeO-incorporated MnO nanoflowers as electrodes for enhanced asymmetric supercapacitor performance.

Manganese dioxide (MnO) is considered a promising aspirant for energy storage materials on account of its higher theoretical capacitance along with low capital cost. However, its performance is generally limited by its poor lifespan and intrinsic conductivity. In this study, MnO-incorporated iron oxide (FeO) nanoflowers were synthesized through a facile hydrothermal route and their electrochemical performance was probed.

Bimetallic Cu/Fe MOF-Based Nanosheet Film via Binder-Free Drop-Casting Route: A Highly Efficient Urea-Electrolysis Catalyst.

Developing efficient electrocatalysts for urea oxidation reaction (UOR) can be a promising alternative strategy to substitute the sluggish oxygen evolution reaction (OER), thereby producing hydrogen at a lower cell-voltage. Herein, we synthesized a binder-free thin film of ultrathin sheets of bimetallic Cu-Fe-based metal-organic frameworks (Cu/Fe-MOFs) on a nickel foam via a drop-casting route. In addition to the scalable route, the drop-casted film-electrode demonstrates the lower UOR potentials of 1.

rGO functionalized (Ni,Fe)-OH for an efficient trifunctional catalyst in low-cost hydrogen generation urea decomposition as a proxy anodic reaction.

Green hydrogen derived from the water-electrolysis route is emerging as a game changer for achieving global carbon neutrality. Economically producing hydrogen through water electrolysis, however, requires the development of low-cost and highly efficient electrocatalysts scalable synthetic strategies. Herein, this work reports a simple and scalable immersion synthetic strategy to deposit reduced graphene oxide (rGO) nanosheets integrated with Ni-Fe-based hydroxide nanocatalysts on nickel foam (NF) at room temperature.

Evaluation of cytotoxic effects of fungal origin nanosilver particles on oral cancer cell lines: An study.

Background: Oral cancer is often associated with poor prognosis and it is found that conventional treatment options cause severe side effects, adjacent tissue disfigurement, and loss of function. Recently, silver nanoparticles (AgNPs) paved their path for cancer treatment.

Aim: This study aimed to investigate cytotoxic effects of fungal procured AgNPs on oral squamous cell carcinoma (SCC-9) cell line using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay.

Polyaniline-wrapped MnMoO as an active catalyst for hydrogen production by electrochemical water splitting.

Developing efficient, low-cost, and environment-friendly electrocatalysts for hydrogen generation is critical for lowering energy usage in electrochemical water splitting. Moreover, for commercialization, fabricating cost-efficient, earth-abundant electrocatalysts with superior characteristics is of urgent need. Towards this endeavor, we report the synthesis of PANI-MnMoO nanocomposites using a hydrothermal approach and an polymerization method with various concentrations of MnMoO.

A Facile Design of Solution-Phase Based VS Multifunctional Electrode for Green Energy Harvesting and Storage.

This work reports the fabrication of vanadium sulfide (VS) microflower via one-step solvo-/hydro-thermal process. The impact of ethylene glycol on the VS morphology and crystal structure as well as the ensuing influences on electrocatalytic hydrogen evolution reaction (HER) and supercapacitor performance are explored and compared with those of the VS obtained from the standard pure-aqueous and pure-ethylene glycol solvents. The optimized VS obtained from the ethylene glycol and water mixed solvents exhibits a highly ordered unique assembly of petals resulting a highly open microflower structure.

A review on two-dimensional (2D) perovskite material-based solar cells to enhance the power conversion efficiency.

With perovskite materials, rapid progress in power conversion efficiency (PCE) to reach 25% has gained a significant amount of attention from the solar cell industry. Since the development of solid-state perovskite solar cells, rapid research development and investigation on structure design, device fabrication and fundamental studies have contributed to solid-state perovskite solar cells to be a strong candidate for next-generation solar energy. The promising efficiency with low-cost materials is the key point over the other material-based solar cells.

Experimental and Theoretical Insights into the Borohydride-Based Reduction-Induced Metal Interdiffusion in Fe-Oxide@NiCoO for Enhanced Oxygen Evolution.

The oxygen evolution reaction (OER) plays a key role in determining the performance of overall water splitting, while a core technological consideration is the development of cost-effective, efficient, and durable catalysts. Here, we demonstrate a robust reduced Fe-oxide@NiCoO bilayered non-precious-metal oxide composite as a highly efficient OER catalyst in an alkaline medium. A bilayered oxide composite film with an interconnected nanoflake morphology (FeO@NiCoO) is reduced in an aqueous NaBH solution, which results in a mosslike FeO@NiCoO (reduced Fe-oxide@NiCoO; rFNCO) nanostructured film with an enhanced electrochemical surface area.

The coevolution of large and small terminases of bacteriophages is a result of purifying selection leading to phenotypic stabilization.

Genome packaging in many dsDNA phages requires a series of precisely coordinated actions of two phage-coded proteins, namely, large terminase (TerL) and small terminase (TerS) with DNA and ATP, and with each other. Despite the strict functional conservation, TerL and TerS homologs exhibit large sequence variations. We investigated the sequence variability across eight phage types and observed a coevolutionary framework wherein the genealogy of TerL homologs mirrored that of the corresponding TerS homologs.

Self-standing SnS nanosheet array: a bifunctional binder-free thin film catalyst for electrochemical hydrogen generation and wastewater treatment.

Hydrogen generation during wastewater treatment has remained a long-standing challenge for the environment preservation welfare. In the present work, we have fabricated a promising bifunctional thin film-based catalyst for hydrogen generation with concurrent wastewater treatment. The prepared catalyst film is a vertically oriented thin SnS (tin monosulfide) nanosheet array on a Ni-foam (SnS/NF) obtained a solution process, demonstrating a promising electrocatalytic activity towards the generation of green H fuel at the cathodic side and the decomposition of urea waste at the anodic side.