https://novaprd-lb.newcastle.edu.au/vital/access/manager/Index ${session.getAttribute("locale")} 5 In Situ XAFS Study of a Modified TS-1 Framework for Carbonyl Formation https://novaprd-lb.newcastle.edu.au/vital/access/manager/Repository/uon:42538 Wed 24 Aug 2022 16:04:24 AEST ]]> In situ synthesis of Pt/TiO₂ nanosheets on flexible Ti mesh for efficient and cyclic phenol removal https://novaprd-lb.newcastle.edu.au/vital/access/manager/Repository/uon:48323 2 nanostructures that feature a two-dimensional (2D) morphology have attracted extensive attention in environment processing and energy conversion fields owing to their peculiarly large surface area and superior transfer efficiency of photogenerated carriers. In this work, we proposed a hybrid approach including a plasma electrolyte oxidation (PEO) and ion exchange strategy to in situ synthesize TiO2 nanosheets on a flexible Ti mesh substrate, in which the layered Na2Ti2O5 nanosheets were fabricated as a template. The TiO2 nanosheets are crystalline anatase phase and exhibit excellent photocatalytic activity and stability in removing phenol. With the modification of the Pt cocatalyst, the phenol degradation performance has been significantly enhanced. More importantly, the in situ grown TiO2 nanosheets on the flexible Ti mesh provide strong substrate adhesion that enables superior photocatalytic stability for cyclic degradation of phenol. It can be expected that the synthetic strategy proposed in this work can pave a solid way toward the in situ growth of various TiO2-based composite nanophotocatalysts with sufficient active sites and excellent photocatalytic properties, and thus, it will open up more opportunities for environment processing and energy conversion.]]> Tue 14 Mar 2023 16:26:44 AEDT ]]> Sorption of PFOS in 114 well-characterized tropical and temperate soils: application of multivariate and artificial neural network analyses https://novaprd-lb.newcastle.edu.au/vital/access/manager/Repository/uon:39790 d) ranged from 5 to 229 mL/g (median: 28 mL/g), with 63% of the Fijian soils and 35% of the Australian soils showing Kd values that exceeded the observed median Kd. Multiple linear regression showed that TOC, amorphous aluminum and iron oxides contents, anion exchange capacity, pH, and silt content, jointly explained about 53% of the variance in PFOS Kd in soils. Variable charge soils with net positive surface charges, and moderate to elevated TOC content, generally displayed enhanced PFOS sorption than in temperate or tropical soils with TOC as the only sorbent phase, especially at acidic pH ranges. For the first time, two artificial neural networks were developed to predict the measured PFOS Kd (R2 = 0.80) in the soils. Overall, both TOC and surface charge characteristics of soils are important for describing PFOS sorption.]]> Thu 23 Jun 2022 14:06:17 AEST ]]> Thermodynamic assessment of heat recovery from a fluidized-bed ventilation air methane abatement unit https://novaprd-lb.newcastle.edu.au/vital/access/manager/Repository/uon:37531 Thu 04 Feb 2021 15:19:21 AEDT ]]> X-ray adsorption spectroscopy of oxides and oxidation catalysts https://novaprd-lb.newcastle.edu.au/vital/access/manager/Repository/uon:8651 Sat 24 Mar 2018 08:41:26 AEDT ]]> Optical properties of anatase and rutile titanium dioxide: ab initio calculations for pure and anion-doped material https://novaprd-lb.newcastle.edu.au/vital/access/manager/Repository/uon:5444 Sat 24 Mar 2018 07:48:09 AEDT ]]> Correlation between film structures and potential limits for hydrogen and oxygen evolutions at a-C:N film electrochemical electrodes https://novaprd-lb.newcastle.edu.au/vital/access/manager/Repository/uon:5031 Sat 24 Mar 2018 07:44:10 AEDT ]]> Thermal characterization of chemically reduced electrolytic manganese dioxide https://novaprd-lb.newcastle.edu.au/vital/access/manager/Repository/uon:342 Sat 24 Mar 2018 07:42:28 AEDT ]]> Nanostructured Materials for Hydrogen Storage and Generation and Oxygen Reduction Reaction https://novaprd-lb.newcastle.edu.au/vital/access/manager/Repository/uon:47894 Mon 06 Feb 2023 13:32:00 AEDT ]]> Relationships between chemical and tracer diffusion coefficients in strongly ionic crystals https://novaprd-lb.newcastle.edu.au/vital/access/manager/Repository/uon:53023 Fri 17 Nov 2023 11:30:04 AEDT ]]> Highly enhanced photocatalytic water-splitting activity of gallium zinc oxynitride derived from flux-assisted Zn/Ga layered double hydroxides https://novaprd-lb.newcastle.edu.au/vital/access/manager/Repository/uon:35922 1–x(ZnO)x] is one of the promising visible light harvesting photocatalysts for overall water splitting. A series of (GaN)1–x(ZnO)x (0.11 ≤ x ≤ 0.33) compounds are synthesized by calcining the carbonate-type Zn/Ga-LDH precursor with and without sodium carbonate flux at 850 °C for 8–14 h under a NH₃ gas flow. The solid solutions without flux are determined to be low in crystallinity, but platelike morphology with preferred orientation could be observed. On the other hand, those with flux turn out to be better in crystallinity, and eventually exhibit significantly higher photocatalytic activity for overall water splitting under visible light irradiation than those without flux. In addition, the band gap energies can also be engineered from 2.57 to 2.72 eV by changing a synthetic parameter such as nitridation time. It is, therefore, suggested that the present new approach can offer new opportunities for designing the next generation of photocatalytic systems.]]> Fri 17 Jan 2020 09:43:08 AEDT ]]> Understanding Iron Impurities in Australian Kaolin and Their Effect on Acid and Heat Activation Processes of Clay https://novaprd-lb.newcastle.edu.au/vital/access/manager/Repository/uon:52954 Fri 03 Nov 2023 11:04:28 AEDT ]]>