https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34185 Tue 19 Feb 2019 11:34:18 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:38241 Tue 17 Aug 2021 11:02:53 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:52265 Tue 10 Oct 2023 18:01:05 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:25178 eucalyptus leaf extracts was used to remove mixed Cr(VI) and Cu(II), where the efficiency was 58.9% and 33.0%, respectively. In contrast, only 20.2% of Cr(VI) and 11.8% of Cu(II) were removed by adsorption using eucalyptus leaf extracts. In addition, the removal mechanism for mixed Cr(VI) and Cu(II) based on both adsorption and reduction by Fe NPs was confirmed by various characterization techniques, including the formations of Fe NPs, iron oxides and capping layer. Furthermore, the kinetics suggested that firstly, their sorption followed the pseudo second-order model well; and secondly, reduction of Cr(VI) and Cu(II) followed the pseudo-first-order model well. Finally, Fe NPs not only removed Cr(VI) and Cu(II), but also Pb(II) and Zn(II) in electroplating wastewater. This provides a new insights into the removal of metal ions using green Fe NPs with a low cost and environmentally friendly remediation strategy.]]> Sat 24 Mar 2018 07:13:53 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24053 -1 was removed using nZVI, while more than 90% of MC-LR was removed using either bimetallic Fe/Ni or Fe/Pd after degrading for 120min. In addition, the results indicated that Fe⁰ was oxided to iron oxide or hydroxide after reacting with MC-LR, while Ni or Pd acted as the catalysis to prevent Fe⁰ corrosion and generating hydrogen via water reduction. Degradation of MC-LR by iron-based nanoparticles fitted well to the pseudo-first order kinetic model and the degradation was a diffusion-controlled reaction with low activation energies (8-21kJmol^-1). Finally, the degradation mechanisms of MC-LR using iron-based nanoparticles were proposed according to the LC-MS analysis. In nZVI case, when the MC-LR was quickly adsorbed on nanoparticles, electron transfer and H₂ generated from iron corrosion were generated and broke down the Adda composition of MC-LR. Based on corrosion in the Fe⁰-H₂O system, bimetallic Fe/Ni and Fe/Pd further utilized the abundant hydrogen radical decomposed from H₂ under the catalysis of Ni or Pd, and destroyed the Adda to form small molecules.]]> Sat 24 Mar 2018 07:09:43 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:32017 Fri 20 Apr 2018 14:47:48 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:48911 Fri 14 Apr 2023 18:33:01 AEST ]]>