Nanjing Tech University

About: Nanjing Tech University is a education organization based out in Nanjing, China. It is known for research contribution in the topics: Catalysis & Membrane. The organization has 21827 authors who have published 21794 publications receiving 364050 citations. The organization is also known as: Nangongda & Nánjīng Gōngyè Dàxúe.

One-step enhancement of solvent transport, stability and photocatalytic properties of graphene oxide/polyimide membranes with multifunctional cross-linkers

Abstract: The practical application of graphene oxide (GO)/polymer composite membranes requires addressing the poor long-term stability caused by exfoliation of GO laminates from the substrate, solvent dissolution of the substrate and fouling by organic pollutants. This study describes the concurrent cross-linking of GO laminates, a polyimide substrate and their interface through a single filtration step with multifunctional triethylenetetramine (TETA). The new strategy features the following advantages: (1) the improved free volume and tunable charge characteristic of GO laminates lead to higher acetonitrile permeance with precise molecular sieving properties over state-of-art organic solvent nanofiltration (OSN) membranes; (2) the covalent bonding formed at the GO/polyimide interface and polyimide substrate endows the membrane with significantly enhanced stability in harsh environments; (3) the photocatalytic properties hold great potential for fouling reduction and dye decolorization.

Zinc ion-doped carbon dots with strong yellow photoluminescence

Abstract: We demonstrated a simple strategy for facile generation of high-quantum yield robust yellow photoluminescent (PL) carbon dots (CDs) doped with zinc ions. These as-synthesized CDs when synthesized using zinc ions and citric acid as the precursor via a one-pot solvothermal method produced zinc ion-doped CDs that yielded excitation-independent yellow PL emission and the highest QY reported to date of 51.2%. We also thoroughly discuss the formation mechanism of these CDs, whose high quality was attributed to the radiative recombination of electrons and holes trapped on the CD surface. We also showed the ability to find practical applications of these as-prepared CDs, such as for bifunctional photonic crystal films and for fluorescent microfibers and patterns.

CuO/Cu2O porous composites: shape and composition controllable fabrication inherited from metal organic frameworks and further application in CO oxidation

Abstract: CuO/Cu2O porous composites with adjustable composition and various morphologies, including cube, octahedron, rod and wire, have been successfully achieved. These structures are inherited from metal organic frameworks formed by Cu and trimesic acid and can be regulated under mild conditions. While tested in CO oxidation, these porous composites exhibited a high performance.