NiCr-LDH/VC MXene nanocomposites as an efficient electrocatalyst for urea oxidation.

The quest for highly efficient electrocatalysts for direct urea fuel cells (DUFCs) is vital in addressing the energy deficits and environmental crisis. Ni-based LDHs are widely known for their substantial capability in urea oxidation reactions (UOR). This study involved the synthesis of NiCr-LDH/VC MXene nanocomposites (NCVs) and the evaluation of their electrochemical efficiency towards UOR.

β-Cyclodextrin capped ZnS nanoparticles for CER-assisted colorimetric and spectrophotometric detection of Pb⁺, Cu⁺, and Hg⁺ in an aqueous solution.

Herein, simple, low-cost, and room-temperature synthesis of beta-cyclodextrin (β-CD) stabilized zinc sulfide nanoparticle (ZnS NP) through the chemical precipitation method has been reported for cation exchange reaction (CER) based colorimetric sensing of Pb, Cu, and Hg. Formation of β-CD stabilized ZnS NPs (ZnS@β-CD) was verified by physicochemical characterization techniques such as XRD, XPS, FE-SEM, and TEM. ZnS@β-CD NPs showed color change selectively for the metal ions Pb⁺, Cu⁺, and Hg⁺ among the various metal ions including Sn⁺, Cr³⁺, Mn⁺, Fe³⁺, Co⁺, Ni⁺, and Cd⁺.

β-Cyclodextrin-Stabilized CuO/MXene Nanocomposite as an Electrode Material for High-Performance Supercapacitors.

Supercapacitors are the best energy storage systems due to their high power density, quick charge/discharge rate, and long-term reliability. In this study, β-cyclodextrin-stabilized CuO nanoparticles (CuO@βCD NPs) were synthesized through a simple reduction method and anchored on the surface of MXene nanosheets in three different proportions (1:1, 4:1, and 1:4) to obtain CuO@βCD/MXene nanocomposites through the wet-impregnation method. The formation of CuO@βCD NPs and their physicochemical characteristics were verified by XRD, XPS, FE-SEM, and HR-TEM analysis.

Flower-like Layered NiCu-LDH/MXene Nanocomposites as an Anodic Material for Electrocatalytic Oxidation of Methanol.

Direct methanol fuel cell (DMFC) technology has grabbed much attention from researchers worldwide in the realm of green and renewable energy-generating technologies. Practical applications of DMFCs are marked by the development of highly active, efficient, economical, and long-lasting anode catalysts. Layered double hydroxide (LDH) nanohybrids are found to be efficient electrode materials for methanol oxidation.

Homopiperazine grafted mesoporous silicas from rice husk ash for CO2 adsorption.

Chloro-functionalized mesoporous MCM-41, SBA-15, MCM-48 and KIT-6 were synthesized by co-condensation of 3-chloropropyl-trimethoxy-silane (CPTMS) and rice husk ash sodium silicate solution, which is subsequently grafted with a heterocyclic amine, homopiperazine (HPZ). X-ray powder diffraction and BET analysis of the chloro-functionalized mesoporous silicas confirmed the similarity between their structural properties and those obtained from conventional silica sources. CO2 adsorption studies of all HPZ-grafted mesoporous silicas exhibited 8-10 wt% of adsorption capacity and are found to be selective, recyclable and thermally stable.