https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36832 Ia3d symmetry and controllable surface properties through a simple polymerization of an environmentally benign and non-toxic guanidine hydrochloride as a C and N precursor using KIT-6 with variable pore sizes as templates for Suzuki coupling reaction. The pore diameters (3.1-4.2 nm), specific surface areas (207-303 m² g^-1), and the specific pore volumes (0.58-0.71 cm³ g^-1) of the MGCN-6 materials are finely controlled by varying the pore size of the templates used. The nano cavities of MGCN-6 with the highest specific surface area and a free amine groups are effectively utilized to chelate with Pd(OAC)₂ and applied the prepared catalysts for Suzuki coupling reaction between aryl halides with phenylboronic acid derivatives under very mild and sustainable reaction conditions. The Pd(OAC)₂/MGCN-6 is found to be very active and stable and exhibits an excellent reactivity and selectivity for all of substrates regardless of aryl halides with electron-withdrawing and electron donating groups at room temperature. The activity of the Pd(OAC)₂/MGCN-6 is much higher than that of non-porous bulk graphitic carbon nitride and 2D mesoporous carbon nitride.]]> Wed 08 Jul 2020 15:26:45 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52887 Tue 31 Oct 2023 10:46:23 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34836 in situ growth of Ag₂O nanoparticles (size: ~12 nm) on their surfaces was realized by a simple deposition method. All Ag₂O/TaON heterojunctions were much more active than pristine TaON or a mechanical mixture of Ag₂O and TaON in the degradation of organic pollutants (cationic dye rhodamine B, anionic dye methyl orange and neutral para-chlorophenol) under visible light (λ > 400 nm). Significantly, the highest photocatalytic activity was observed in the heterojunction with a Ag/Ta molar ratio of 0.1/1 (0.1Ag-Ta). The RhB degradation rate constant using 0.1Ag-Ta is approximately 9.7 and 3.1 times higher than those obtained by using TaON microspheres, and the mechanical mixture, respectively. The superior photocatalytic performance of Ag₂O/TaON is ascribed to the hierarchical superstructure and efficient charge separation. The mainly involved active species (holes and superoxide radicals) were identified via radical trapping experiments and electron paramagnetic resonance spectroscopy. The results demonstrate that Ag₂O/TaON is a potential VLD photocatalyst for wastewater treatment.]]> Thu 16 May 2019 14:08:57 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:45693 Fri 04 Nov 2022 09:09:45 AEDT ]]>