Photo-thermal conversion properties of MXene/metal-organic-frameworks-based nanofluids for solar energy harvesting.

This study focuses on enhancing solar energy capture efficiency by introducing innovative hybrid nanofluids for use in solar thermal collectors, whose performance largely depends on the absorption properties of the working fluid. The newly developed hybrid nanofluids, MXene/NH2-UiO66 (Zr) (noted as MX/UO66) and MXene/MIL-88B (Fe) (noted as MX/ML88), were synthesized using an in-situ solvothermal method, combining annealed Ti3C2Tx MXenes with water-stable metal-organic frameworks (MOFs). These nanofluids achieved high efficiency at low concentrations, providing both economic and performance benefits.

Integration of metal co-dopted cysteine builted in porous covalent organic framework (COF) decorated 2D hexagonal boron nitride (h-BN) for multi-functional smart coatings.

Advanced multi-functional epoxy coating with physical barrier/shielding against corrosive species, self-repairing-capability/active anti-corrosive behavior, abrasion resistance, and thermomechanical durability was established in this study. For this purpose, zinc/l-cysteine (ZC) inbuilt pH-sensitive covalent organic framework (COF) decorated two dimensional (2D) layered amino-functionalized (Si) oxidized hexagonal boron nitride (ZC-COF-Si-Oh-BN) container was prepared. Different analyses such as FT-IR, XRD, BET, XPS, TGA, TEM, and FE-SEM were utilized to evaluate the synthesized containers and pristine materials.