Search

Fe3O4nanoparticles (NPs) with sizes of ca5.3, 6.6, and 9.8 nm can be successfully loaded on the surface of CoSe2-DETA hybrid nanobelts viaa facile thermal reduction process in polyol solution. The resulting multifunctional nanocomposites are superparamagnetic at room temperature. Most interestingly, the electrocatalytic activity for the O2reduction reaction (ORR) of the constructed Fe3O4-decorated CoSe2nanobelts yield a decent enhancement compared with original CoSe2-DETA catalysts, i.e., the onset potential and current density show 1.01 mA cm−2and 0.05 V increase at 0.3 V, 1600 rpm, respectively. Additionally, the number of electrons transferred (n) increases from 2.1 to 3.6 after integrating with Fe3O4nanoparticles. The work described here has provided a promising route to the design and development of new Pt-free catalysts with high-performance by introducing other cheap NPs. [ABSTRACT FROM AUTHOR]

A photo-thermal/catalytic reduction lithography (PRL) approach for the fabrication of photoconductive patterns by 300 W Xe lamp illumination of the (PDDA/GO/PDDA/TiO)20hybrid films formed through layer by layer (LBL) assembly technique has been reported. High quality (PDDA/GO/PDDA/TiO)20hybrid films were fabricated on the glass substrate through alternative LBL self-assembly with graphene oxide (GO), titania (TiO) nanosheets, and poly(diallyldimethylammonium) (PDDA). Then, the photoconductive pattern was fabricated by illuminating the hybrid film equipped with a pre-designed aluminium foil as the shadow mask. The “on-off” photoconductive response of the fabricated pattern was directly tested due to the photo-electro conversion role of TiO nanosheets and electronic transportation of reduced GO (RGO) nanosheets, which shows a high photocurrent generation and good reversibility. [ABSTRACT FROM AUTHOR]