Facile assembly of flexible humidity sensors based on nanostructured graphite/zinc oxide-coated cellulose fibrous frameworks for human healthcare.

The development of flexible, cost-effective, highly efficient, and reliable humidity monitoring sensors is in high demand owing to their wide-range of applications in industrial domains. In this study, a humidity sensor was fabricated based on graphite/zinc oxide nanoparticle (G/ZnO-NP)-coated cellulose paper. A bar device was designed using computer software, and its sketch was printed on cellulose paper, with graphite bars then added using the pencil-drawing method, and then ZnO-NP paste was coated on the graphite patterns.

First-principles study of electronic, optical, and thermoelectric properties of KMCuS (M = Th and Sm) quaternary chalcogenides.

Copper-based quaternary chalcogenides are considered as intriguing material systems in terms of their remarkable optoelectronic and thermoelectric properties. Here we investigated the light interaction and electronic transport properties of novel KMCuS (M = Th, Sm) materials. Advanced computations based on density functional theory were used for these calculations.

Electrocatalytic activity of tungsten carbide hybrids with two different MOFs for water splitting: a comparative analysis.

Conventional energy resources are diminishing, and environmental pollution is constantly increasing because of the excessive use of fossil fuels to sustain the ever-increasing population and industrialization. This has raised concerns regarding a sustainable future. In the pursuit of addressing sustainability in industrial processes and energy systems, the production of green hydrogen is considered a promising and crucial solution to meet the growing energy demands.

Fabrication of MoS/rGO hybrids as electrocatalyst for water splitting applications.

Environmental degradation and energy constraint are important risks to long-term sustainability in the modern world. Water splitting is a vital approach for environmentally friendly and sustainable energy storage, providing a clean way to produce hydrogen without pollutants. Preparing a catalyst that is active, bifunctional, and durable for water splitting is a difficult task.

Recent advances in the role of MXene based hybrid architectures as electrocatalysts for water splitting.

The development of non-noble metal based and cost-effective electrocatalysts for water splitting has attracted significant attention due to their potential in production of clean and green hydrogen fuel. Discovered in 2011, a family of two-dimensional transition metal carbides, nitrides, and carbonitrides, have demonstrated promising performance as electro catalysts in the water splitting process due to their high electrical conductivity, very large surface area and abundant catalytic active sites. However, their-long term stability and recyclability are limited due to restacking and agglomeration of MXene flakes.

Multiscale tribology analysis of MHD hybrid nanofluid flow over a curved stretching surface.

In this study, we investigate the interactions of a hybrid nanofluid on a curved surface that is being stretched. The magnetic field is perpendicular to the flow and interacts with a mixture of molybdenum disulfide and argentum nanoparticles suspended in pure water, forming a hybrid nanomaterial. Our investigation considers heat transport analysis under different conditions, such as magnetohydrodynamic, Darcy-Forchheimer porous medium flow, Joule heating, and a convective boundary condition.

Assessing Household's Municipal Waste Segregation Intentions in Metropolitan Cities of Pakistan: A Structural Equation Modeling Approach.

There is a growing concern about inappropriate waste disposal and its negative impact on human health and the environment. The objective of this study is to understand household waste segregation intention considering psychological, institutional, and situational factors simultaneously. Insights into the motivations of household waste segregation drivers may assist in a better knowledge of how to pursue the most efficient and effective initiatives.

A zeolitic imidazolate framework (ZIF-67) and graphitic carbon nitride (g-CN) composite based efficient electrocatalyst for overall water-splitting reaction.

Designing of non-noble, cost-effective, sustainable catalysts for water splitting is essential for hydrogen production. In this research work, ZIF-67, g-CN, and their composite (1, 3, 5, 6, 8 wt% g-CN@ZIF-67) are synthesized, and various techniques, XRD, FTIR, SEM, EDX and BET are used to examine their morphological properties for electrochemical water-splitting. The linkage of ZIF-67 with g-CN synergistically improves the electrochemical kinetics.

Synthesis, DNA binding and biological evaluation of benzimidazole Schiff base ligands and their metal(ii) complexes.

Two novel benzimidazole ligands ()-2-((4-(1-benzo[]imidazole-2-yl)phenylimino)methyl)-6-bromo-4-chlorophenol (L) and ()-1-((4-(1-benzo[]imidazole-2-yl)phenylimino)methyl)naphthalene-2-ol (L) with their corresponding Cu(ii), Ni(ii), Pd(ii) and Zn(ii) complexes were designed and synthesized. The compounds were characterized by elemental, IR, and NMR (H & C) spectral analyses. Molecular masses were determined by ESI-mass spectrometry, and the structure of ligand L was confirmed by single crystal X-ray diffraction analysis.

An inclusive review and perspective on Cu-based materials for electrochemical water splitting.

In recent years, there has been a resurgence of interest in developing green and renewable alternate energy sources as a solution to the energy and environmental problems produced by conventional fossil fuel use. As a very effective energy transporter, hydrogen (H) is a possible candidate for the future energy supply. Hydrogen production by water splitting is a promising new energy option.

Quantitative structure-properties relationship analysis of Eigen-value-based indices using COVID-19 drugs structure.

Topological indices are an important method for understanding the fundamental topology of chemical structures. Quantitative structure properties relationship (QSPR) is an analytical approach for breaking down a molecule into a sequence of numerical values that describe the chemical and physical characteristics of the molecule. In this article, we have developed the QSPR analysis between eigenvalue-based topological indices and physical properties of COVID-19 drugs to predict the significance level of eigenvalue based indices.

A review on development of metal-organic framework-derived bifunctional electrocatalysts for oxygen electrodes in metal-air batteries.

Worldwide demand for oil, coal, and natural gas has increased recently because of odd weather patterns and economies recovering from the pandemic. By using these fuels at an astonishing rate, their reserves are running low with each passing decade. Increased reliance on these sources is contributing significantly to both global warming and power shortage problems.

Enhanced pseudocapacitive energy storage and thermal stability of Sn ion-intercalated molybdenum titanium carbide (MoTiC) MXene.

Electrochemical energy-storage (EES) devices are a major part of energy-storage systems for industrial and domestic applications. Herein, a two-dimensional (2D) transition metal carbide MXene, namely MoTiC, was intercalated with Sn ions to study the structural, morphological, optical, and electrochemical energy-storage effects. The Sn-intercalated modified layered structure, prepared a facile liquid-phase pre-intercalated cetyltrimethylammonium bromide (CTAB) method, showed a higher surface area of 30 m g, low band gap of 1.

Appraisal of novel azomethine-thioxoimidazolidinone conjugates as ecto-5'-nucleotidase inhibitors: synthesis and molecular docking studies.

Purinergic signaling is regulated by a group of extracellular enzymes called ectonucleotidases. One of its members , ecto-5'-nucleotidase (-e5'NT) is involved in the final step of the enzymatic hydrolysis cascade that is the conversion of adenosine monophosphate (AMP) to adenosine and therefore, involves the regulation of adenosine level in extracellular space. The overexpression of -e5'NT has been observed in various pathological conditions such as hypoxia, inflammation and cancers, and led to various complications.

A TiO composite with graphitic carbon nitride as a photocatalyst for biodiesel production from waste cooking oil.

Semiconductor-based photocatalysts have attracted a lot of interest due to their environmental friendliness and high stability. Waste cooking oil can be converted to biodiesel by the process of transesterification. A TiO/g-CN combination was prepared by using a wet impregnation process.

Metal-organic framework based electrode materials for lithium-ion batteries: a review.

Metal-organic frameworks (MOFs) with efficient surface and structural properties have risen as a distinctive class of porous materials through the last few decades, which has enabled MOFs to gain attention in a wide range of applications like drug delivery, gas separation and storage, catalysis and sensors. Likewise, they have also emerged as efficient active materials in energy storage devices owing to their remarkable conducting properties. Metal-organic frameworks (MOFs) have garnered great interest in high-energy-density rechargeable batteries and super-capacitors.

A comprehensive and critical review of the recent progress in electrocatalysts for the ethanol oxidation reaction.

The human craving for energy is continually mounting and becoming progressively difficult to gratify. At present, the world's massive energy demands are chiefly encountered by nonrenewable and benign fossil fuels. However, the development of dynamic energy cradles for a gradually thriving world to lessen fossil fuel reserve depletion and environmental concerns is currently a persistent issue for society.

Nickel-adsorbed two-dimensional NbC MXene for enhanced energy storage applications.

Owing to the tremendous energy storage capacity of two-dimensional transition metal carbides (MXenes), they have been efficiently utilized as a promising candidate in the field of super-capacitors. The energy storage capacity of MXenes can be further enhanced using metal dopants. Herein, we have reported the synthesis of pristine and nickel doped niobium-carbide (NbC) MXenes, their computational and electrochemical properties.

MWCNT-modified MXene as cost-effective efficient bifunctional catalyst for overall water splitting.

Utilization of cost-effective, bifunctional, and efficient electrocatalysts for complete water splitting is desirable for sustainable clean hydrogen energy. In last decade, MXenes, a family of emerging two-dimensional (2D) materials with unique physiochemical properties, enticed scientists because of their use in different applications. However, insufficient electron transport, lower intrinsic chemical activity and limited active site densities are the factors inhibiting their use in electrocatalytic cells for hydrogen production.

Zeolitic imidazolate framework (ZIF)-derived porous carbon materials for supercapacitors: an overview.

The present analysis focuses on the synthetic methods used for the application of supercapacitors with various mysterious architectures derived from zeolitic imidazolate frameworks (ZIFs). ZIFs represent an emerging and unique class of metal-organic frameworks with structures similar to conventional aluminosilicate zeolites, consisting of imidazolate linkers and metal ions. Their intrinsic porous properties, robust functionalities, and excellent thermal and chemical stabilities have resulted in a wide range of potential applications for various ZIF materials.

Phyto-inspired and scalable approach for the synthesis of PdO-2MnO: a nano-material for application in water splitting electro-catalysis.

A modified co-precipitation method has been used for the synthesis of a PdO-2MnO nanocomposite as an efficient electrode material for the electro-catalytic oxygen evolution (OER) and hydrogen evolution reaction (HER). Palladium acetate and manganese acetate in molar ratio 1 : 4 were dissolved in water, and 10 ml of an aqueous solution of phyto-compounds was slowly added until completion of precipitation. The filtered and dried precipitates were then calcined at 450 °C to obtain a blackish brown colored mixture of PdO-2MnO nanocomposite.

Optical optimization of double-side-textured monolithic perovskite-silicon tandem solar cells for improved light management.

Tandem configuration-containing perovskite and silicon solar cells are promising candidates for realizing a high power conversion efficiency of 30% at reasonable costs. Silicon solar cells with planar front surfaces used in tandem devices cause high optical losses, which significantly affects their efficiency. Moreover, some studies have explored the fabrication of perovskites on textured silicon cells.

Magnetic phase transition from paramagnetic in NbAlC-MAX to superconductivity-like diamagnetic in NbC-MXene: an experimental and computational analysis.

Transition metal carbides (TMCs) have recently emerged as competent members among the family of two-dimensional (2D) materials, owing to their promising applications. There are many promising applications of MXenes; however, their magnetic properties lack a wide margin, both experimentally as well as theoretically, which needs to be investigated for potential use in spintronics. In this study, we carried out a comprehensive etching process selective extraction of Al layers from NbAlC-MAX using a wet electrochemical route under well-optimized conditions to obtain fine 2D-NbC MXene sheets.

Synthesis, X-ray crystal structure elucidation and Hirshfeld surface analysis of -((4-(1-benzo[]imidazole-2-yl)phenyl)carbamothioyl)benzamide: investigations for elastase inhibition, antioxidant and DNA binding potentials for biological applications.

The interest in the present study pertains to the development of a new compound based upon a benzimidazole thiourea moiety that has unique properties related to elastase inhibition, free radical scavenging activity and its DNA binding ability. The title compound, -(4-(1-benzo[]imidazol-2-yl)phenyl)-3-benzoyl thiourea (CHNOSHO:TUBC), was synthesized by reacting an acid chloride of benzoic acid with potassium thiocyanate (KSCN) along with the subsequent addition of 4-(1-benzo[]imidazol-2-yl)benzenamine a one-pot three-step procedure. The structure of the resulting benzimidazole based thiourea was confirmed by spectroscopic techniques including FTIR, H-NMR, C-NMR and single crystal X-ray diffraction and further examined by Hirshfeld surface analysis.

A comprehensive investigation of MoO based resistive random access memory.

The bipolar resistive switching of molybdenum oxide is deliberated while molybdenum and nickel are used as bottom and top electrodes, respectively, to present a device with resistive random access memory (RRAM) characteristics. For the trilayered structure, the SET voltage lies around 3.3 V and RESET voltage is observed to be in the -2.