3 documents found, page 1 of 1
Design and photo-Fenton performance of Graphene/CuS/Fe3O4 tertiary nanocomposit...
Matos, Renata; Kuźniarska-Biernacka, Iwona; Rocha, Mariana; Belo, João H.; Araújo, João Pedro; Estrada, Ana C.; Lopes, Joana L.; Shah, TushtiThis study describes nanocomposites of graphene flakes (GF) combined with CuS, Fe3O4 and CuS−Fe3O4 nanoparticles prepared by wet chemical methods. The Fe3O4 and/or CuS nanoparticles were directly anchored onto GF without requiring additional chemical treatment. The composition, structure and morphology of the nanocomposites, as well as of the pristine GF and metal oxide/sulfide nanoparticles were characterised ...
Compositional fluctuations mediated by excess tellurium in bismuth antimony tel...
Chauhan, Nagendra S.; Pyrlin, Sergey V.; Lebedev, Oleg I.; Marques, L.; Ramos, Marta M. D.; Maiti, Tanmoy; Kovnir, Kirill; Korgel, Brian A.A high thermoelectric figure of merit (ZT) in state-of-the-art bismuth antimony telluride (BST) composites was attained by an excess tellurium-assisted liquid-phase compaction approach. Herein, we report a maximum ZT of approximate to 1.4 at 500 K attained for BST bulk nanocomposites fabricated by spark plasma sintering of colloidally synthesized (Bi,Sb)(2)Te-3 platelets and Te-rich rods. The Terich nanodomains...
Scalable colloidal synthesis of Bi<inf>2</inf>Te<inf>2.7</inf>Se<inf>0.3</inf>p...
Chauhan, Nagendra S.; Lebedev, Oleg I.; Kovnir, Kirill; Pyrlin, Sergey V.; Marques, L.; Ramos, Marta M. D.; Korgel, Brian A.; Kolen'Ko, Yury V.Colloidal synthesis is harnessed for the gram-scale preparation of hexagonal-shaped plate-like Bi2Te2.7Se0.3 particles, yielding nearly 5 g of the product in one experiment. The resultant textured particles are highly crystalline, phase-pure, chemically uniform, and can serve as a starting material for the preparation of bulk thermoelectrics for room temperature applications. The consolidation occurs via spark ...