https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50601 Wed 28 Feb 2024 16:38:18 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:54557 Wed 28 Feb 2024 10:25:41 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:54552 Wed 28 Feb 2024 07:28:41 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49628 Wed 24 May 2023 13:32:39 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:56047 Wed 24 Jul 2024 11:10:19 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:35395 Na > Li), as are stronger-interacting substrates (e.g. Ni > Cu). Despite the electropositivity of these alkali metal adsorbates, analysis of charge transfer between the alkali metal, the substrate and the adsorbed graphene layer indicates that charge transfer does not give rise to the observed regioselective reactivity. Instead, the increased reactivity induced in the graphene structure is shown to arise from the geometrical distortion of the graphene layer imposed by the intercalated adsorbed atom. We show that this strategy can be used with arbitrary adsorbates and substrate defects, provided such structures are stable, towards controlling the mesoscale patterning and chemical functionalisation of graphene structures.]]> Wed 24 Jul 2019 12:34:22 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:53475 Wed 21 Feb 2024 14:57:04 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40934 Wed 20 Jul 2022 12:20:32 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50217 Wed 06 Mar 2024 14:28:05 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50173 Wed 05 Jul 2023 16:38:16 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34954 Wed 04 Dec 2019 10:03:09 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:35392 −2, and the corresponding Tafel slopes of 51.8 and 108mV dec⁻¹, respectively. Otherwise, the CoS₂@N-GN hybrid also presents superior long-term catalytic durability. Moreover, an alkaline water splitting device assembled by CoS₂@N-GN as both anode and cathode can achieve a low cell voltage of 1.53 V at 60◦C with a high faraday efficiency of 100% for overall water splitting. The tremendously enhanced electrochemical behaviors arise from favorable factors including small sized, homogenously dispersed novel CoS₂ nanocrystals and coupling interaction with the underlying conductive nitrogen-doped graphene, which would provide insight into the rational design of transition metal chalcogenides for highly efficient and durable hydrogen and oxygen-involved electrocatalysis.]]> Tue 23 Jul 2019 15:27:22 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:37264 Tue 15 Sep 2020 12:51:18 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32510 Tue 12 Jun 2018 15:33:14 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:44337 Tue 11 Oct 2022 19:21:30 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34742 2-based photocatalysts is continuing and, in particular, evolving a new strategy is an important aspect in this regard. In general, much effort has been devoted to the anatase TiO₂ modifications, despite there being only a few recent studies on rutile TiO₂ (rTiO₂). To the best of our knowledge, studies on the preparation and characterization of the photocatalysts based on the intentional inclusion of graphene (G) into rTiO₂ nanostructures have not been reported yet. Herein, we develop a new type of TiO₂-based photocatalyst comprising of G included pure rTiO₂ nanowire (abbreviated as rTiO₂(G) NW) with enhanced visible light absorption capability. To prepare rTiO₂(G) NW, the G incorporated titanate electrospun fibers were obtained by electrospinning and subsequently heat treated at various temperatures (500 to 800 °C). Electrospinning conditions were optimized for producing good quality rTiO₂(G) NW. The rTiO₂(G) NW and their corresponding samples were characterized by appropriate techniques such as X-ray diffraction (XRD), scanning electron microscopy, high-resolution transmission electron microscopy and UV-vis diffuse reflectance spectroscopy to ascertain their material characteristics. XRD results show that the lattice strain occurs upon inclusion of G. We present here the first observation of an apparent bandgap lowering because of the G inclusion into TiO₂ NW. While anatase TiO2 NW exhibited poor visible light photocatalysis towards NOx removal, the rTiO₂(G) NW photocatalyst witnessed a significantly enhanced (~67%) photocatalytic performance as compared to anatase TiO₂(G) NW. We concluded that the inclusion of G into rTiO₂ nanostructures enhances the visible light photoactivity. A plausible mechanism for photocatalysis is suggested.]]> Tue 03 Sep 2019 18:02:02 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32825 Tue 03 Sep 2019 17:55:33 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:37197 Tue 01 Sep 2020 18:47:26 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:42074 80%) and a low degree of oxidation with a C/O ratio of 16.9. The graphene solution-processability is readily tuned and improved with stable dispersions up to 5 mg/mL in dimethylformamide. This new strategy of a simple and low cost dual purpose additive in scavenging hydroxyl radicals and providing an oxidative prevention layer to efficiently tune the graphene quality and solution-processability; holds promise in industrial scale mass production of high quality graphene.]]> Thu 18 Aug 2022 09:48:18 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29631 Sat 24 Mar 2018 07:41:52 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27721 Sat 24 Mar 2018 07:24:37 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50891 Mon 29 Jan 2024 18:22:27 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34261 Eucalyptus leaf extract (EL-RGO) was investigated, which was characterized with ultraviolet-visible spectroscopy (UV), Raman spectroscopy, X-ray diffraction (XRD), scanning electron microscope (SEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS) and Thermal gravimetric analysis (TG). Eucalyptus leaf extract also play both reducing and capping stabilizing agents prepared EL-RGO as shown a good stability and electrochemical properties. This approach could provide an alternative method to prepare EL-RGO in large-scale production. Moreover, the good electrochemical property and biocompatibility can be used in various applications. In addition, the merit of this study is that both the oxidized products and the reducing agents are environmental friendly by green reduction.]]> Mon 25 Feb 2019 11:39:33 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:44788 Mon 24 Oct 2022 09:17:58 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33900 Mon 23 Sep 2019 13:35:32 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20914 Mon 12 Aug 2019 14:38:16 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32736 Fri 20 Sep 2019 02:34:30 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:53181 Fri 17 Nov 2023 11:39:31 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49941 Fri 16 Jun 2023 09:51:41 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:41801 Fri 12 Aug 2022 12:24:43 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:45744 Fri 04 Nov 2022 10:20:03 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52950 Fri 03 Nov 2023 11:04:40 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:53508 Fri 01 Dec 2023 10:44:39 AEDT ]]>