https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:35476  Br⁻ addition > Cl⁻ addition. Our experimental observations are consistent with the recently reported solvation structure of PEO in these solutions (Stefanovic et al., 2018). The increased charge density from NO₃⁻ to Br⁻ to Cl⁻ results in greater net ionic interaction between the ionic charge centres. As PEO interacts with PAN primarily through the ammonium hydrogens of the cation, this increased ionic interaction effectively displaces the PEO, resulting in poorer solvation.]]> Wed 24 May 2023 15:03:35 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34338 Wed 24 Jul 2019 13:04:50 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32244 Wed 16 May 2018 11:22:22 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32694 Wed 11 Jul 2018 15:33:23 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30467 6,6,6,14][TFSI]), with polytetra-fluoroethylene (PTFE) particles used as thickeners. Greases with different base liquid concentrations (60–80 wt %) were investigated using small-amplitude oscillatory shear and viscous flow measurements, and contact angle measurements probed adhesion at base liquid–PTFE interfaces. Rheological properties are influenced by base liquid–PTFE adhesion and the chemical structure of the grease base liquids. With the addition of thickener, the greases generally have higher elasticity, strain resistance, and frequency independent properties. Viscometric rheological tests illustrate non-Newtonian shear-thinning behaviour for all greases. [BMIM][TFSI] based greases show the most elastic properties and strain resistance, as well as the highest initial and lowest final viscosities of the greases tested.]]> Wed 11 Apr 2018 18:05:22 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20326 Wed 11 Apr 2018 17:18:48 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20545 Wed 11 Apr 2018 16:45:55 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13601 Wed 11 Apr 2018 16:41:20 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20313 Wed 11 Apr 2018 16:36:48 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:18889 Wed 11 Apr 2018 16:28:16 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:14672 Wed 11 Apr 2018 16:24:54 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:21264 q) functions derived from diffraction and scattering data (HEXRD and SAXS/WAXS). The competition between the glyme molecules and the salt anions for the coordination to the lithium cations is quantified by comprehensive aggregate analyses. Lithium-glyme solvates are dominant in the lithium bis(trifluoromethylsulfonyl)imide systems and much less so in systems based on the other two salts. The aggregation studies also emphasize the existence of complex coordination patterns between the different species (cations, anions, glyme molecules) present in the studied fluid media. The analysis of such complex behavior is extended to the conformational landscape of the anions and glyme molecules and to the dynamics (solvate diffusion) of the bis(trifluoromethylsulfonyl)imide plus triglyme system.]]> Wed 11 Apr 2018 16:08:15 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13619 Wed 11 Apr 2018 16:00:54 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:21302 Wed 11 Apr 2018 15:52:08 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26214 Wed 11 Apr 2018 15:39:03 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:21303 , ₄]TFSI with Au(111) using cyclic voltammetry and atomic force microscopy (AFM). Raman spectroscopy was used to understand the Li⁺ ion coordination with the TFSI– ion and showed that with increase in LiTFSI concentration in[Py₁_, ₄]TFSI, the Li+ ion solvation structure significantly changes. Correspondingly, the force–distance profile in AFM revealed that at lower concentrations of LiTFSI (0.1 M) a multilayered structure is obtained. On increasing the concentration of LiTFSI (0.5 and 1 M), a significant decrease in the number of interfacial layers was observed. With change in the potential, the interfacial layers were found to vary with an increase in the force required to rupture the layers. The present study clearly shows that Li⁺ ions vary the ionic liquid/Au(111) interface and could provide insight into the interfacial processes in ionic liquid based lithium batteries.]]> Wed 11 Apr 2018 15:26:43 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:23022 g) and viscosity as a function of polymer concentration allow the overlap concentrations, c* and c**, to be identified at 13 mg mL⁻¹ and 50 mg mL⁻¹, respectively, which are similar to values reported previously for conventional ionic liquids. Unlike water and conventional ionic liquids, [Li(G4)]TFSI cannot form hydrogen bonds with PEO. Thermal gravimetric analysis indicates that the solvation of PEO by [Li(G4)]TFSI is a consequence of PEO forming coordinate bonds with the lithium by displacing the anion, but without displacing the glyme molecule.]]> Wed 11 Apr 2018 15:11:45 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:18762 Wed 11 Apr 2018 14:54:37 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13676 Wed 11 Apr 2018 14:44:49 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:14997 Wed 11 Apr 2018 14:38:27 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20320 + or Cl^- is present, some Stern layer ionic liquid cations or anions (respectively) are displaced, producing starkly different structures. The Stern layer structures elucidated here significantly enhance our understanding of the ionic liquid electrical double layer.]]> Wed 11 Apr 2018 14:31:23 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13600 Wed 11 Apr 2018 13:56:16 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20590 Wed 11 Apr 2018 13:52:57 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30812 Wed 11 Apr 2018 13:11:38 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:14213 Wed 11 Apr 2018 12:55:35 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30813 Wed 11 Apr 2018 12:49:41 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:21211 Wed 11 Apr 2018 12:40:02 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26256 Wed 11 Apr 2018 12:35:53 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20327 109EO₅₄, EGE₁₁₃EO₁₁₅, EGE₁₀₄EO₁₇₈, and GPrE₉₈EO₂₆₀) have been investigated between 10 and 100 °C, showing how aggregate structure changes with increasing the EO block length, by changing the insoluble block from EGE to the more bulky, hydrophobic GPrE block, and with temperature. EO solubility mainly depends on the hydrogen bond network density, and decreases in the order H₂O, EAN, and then PAN. The solubility of the EGE and GPrE blocks decreases in the order PAN, EAN then water because the large apolar domain of PAN increase the solubility of the solvophobic blocks more effectively than the smaller apolar domains in EAN, and water, which is entirely hydrophilic; GPrE is less soluble than EGE because its larger size hinders solubilization in the IL apolar domains. Large disk-shaped structures were present for EGE₁₀₉EO₅₄ in all three solvents because short EO chains favor flat structures, while GPrE₉₈EO₂₆₀ formed spherical structures because long EO chains lead to curved aggregates. The aggregate structures of EGE₁₁₃EO₁₁₅ and EGE₁₀₄EO₁₇₈, which have intermediate EO chain lengths, varied depending on the solvent and the temperature. Solubilities also explain trends in critical micelle concentrations (cmc) and temperatures (cmt).]]> Wed 11 Apr 2018 12:26:49 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24748 Wed 11 Apr 2018 12:25:09 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:15738 Wed 11 Apr 2018 12:12:57 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20544 Wed 11 Apr 2018 12:06:41 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26887 Wed 11 Apr 2018 11:23:56 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:14219 Wed 11 Apr 2018 11:05:41 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27045 g) and viscosity as a function of polymer concentration allow the overlap concentrations, c* and c**, to be identified at 13 mg mL(^-1) and 50 mg mL(^-1), respectively, which are similar to values reported previously for conventional ionic liquids. Unlike water and conventional ionic liquids, [Li(G4)]TFSI cannot form hydrogen bonds with PEO. Thermal gravimetric analysis indicates that the solvation of PEO by [Li(G4)]TFSI is a consequence of PEO forming coordinate bonds with the lithium by displacing the anion, but without displacing the glyme molecule.]]> Wed 11 Apr 2018 10:55:18 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13680 − anion-enriched layer is more lubricating than either the [BMIM]⁺ or FAP^- layers. The effect of cation charged group (charge-delocalised versus charged-localised) was investigated by comparing [BMIM] FAP with 1-butyl-1-methylpyrrolidinium tris(pentafluoroethyl)trifluorophosphate ([Py] FAP). [BMIM] FAP is less lubricating at negative potentials, but more lubricating at positive potentials. This indicated that even at positive potentials the cation concentration in the boundary layer is sufficiently high to influence lubricity. The influence of sliding velocity on lateral force was investigated for the [EMIM] FAP–Au(111) system. At neutral potentials the behaviour is consistent with a discontinuous sliding process. When a positive or negative potential bias is applied, this effect is less pronounced as the colloid probe slides along a better defined ion plane.]]> Wed 11 Apr 2018 10:53:59 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:14679 Wed 11 Apr 2018 10:12:06 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13681 + cations in the interfacial layer are orientated towards the Au(111) surface, and this more parallel orientation is favourable for templating structure. [HMIM] FAP is more strongly structured than [BMIM] FAP because the longer cation alkyl chain increases solvophobic interactions which lead to better defined near surface structure. The response of [BMIM] I to changes in potential is opposite to that of the FAP⁻ ILs. [BMIM] I interfacial nanostructure is stronger at positive potentials, because I− anions pack more neatly at the Au(111) surface than [BMIM]⁺ cations, which templates stronger structure in subsequent layers.]]> Wed 11 Apr 2018 10:11:54 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31333 1,4]TFSA). AFM measurements reveal that the imidazolium cation adsorbs at the H-Si(111)/[EMIm]TFSA interface leading to an ordered clustered facet structure of ∼3.8 nm in size. In comparison, the Si(111)/[Py_1,4]TFSA interface appeared the same as the native surface in argon. For both pure ILs, repulsive forces were measured as the tip approached the surface. On addition of LiTFSA attractive forces were measured, revealing marked changes in the interfacial structure.]]> Wed 11 Apr 2018 09:55:10 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:14636 Wed 11 Apr 2018 09:31:30 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13886 Tue 25 Jul 2023 12:15:37 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31262 Tue 16 Oct 2018 12:11:54 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13677 Tue 16 Jan 2024 16:24:28 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34809 Tue 14 May 2019 10:49:16 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43110 Tue 13 Sep 2022 13:36:25 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34122 Tue 12 Feb 2019 13:11:58 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32669 Tue 10 Jul 2018 15:31:13 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34719 via stick-slip events. In contrast, friction at Au(111) for Li(G4) TFSI is significantly higher at positive potentials than at negative potentials, which is comparable to that at HOPG at the same potential. The similarity of boundary layer friction at negatively charged HOPG and Au(111) surfaces indicates that the boundary layer compositions are similar and rich in Li⁺ cations for both surfaces at negative potentials. However, at Au(111), the TFSI⁻ rich boundary layer is less lubricating than the Li⁺ rich boundary layer, which implies that anion reorientations rather than stick-slip events are the predominant energy dissipation pathways. This is confirmed by the boundary friction of Li(G4) NO₃ at Au(111), which shows similar friction to Li(G4) TFSI at negative potentials due to the same cation rich boundary layer composition, but even higher friction at positive potentials, due to higher energy dissipation in the NO₃⁻ rich boundary layer.]]> Tue 03 Sep 2019 18:26:08 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34961 Chlorella vulgaris and Spirulina platensis can be pretreated with low cost choline amino acid based ionic liquids to effectively yield lipids (30.6% and 51% total lipids) and sugars (71% and 26% total sugars). The ionic liquids dissolve the lipids, leaving behind a carbohydrate rich solid. The lipids were extracted with hexane, and the solid was subjected to enzyme hydrolysis to release fermentable sugars. These results open new pathways towards the dual production of biodiesel and bioethanol from algae, using low cost ionic liquids.]]> Tue 03 Sep 2019 17:57:59 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:55005 Thu 28 Mar 2024 13:38:10 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47419 Thu 19 Jan 2023 12:56:37 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50900 Thu 10 Aug 2023 13:18:03 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13682 Sat 24 Mar 2018 10:41:08 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13679 Sat 24 Mar 2018 10:41:08 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13706 Sat 24 Mar 2018 10:38:08 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13609 Sat 24 Mar 2018 10:36:12 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13591 Sat 24 Mar 2018 10:35:54 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13606 Sat 24 Mar 2018 10:35:51 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13598 Sat 24 Mar 2018 10:35:07 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13597 Sat 24 Mar 2018 10:35:07 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13602 Sat 24 Mar 2018 10:35:07 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31224 Sat 24 Mar 2018 08:43:21 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:14394 Sat 24 Mar 2018 08:24:56 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:14181 Sat 24 Mar 2018 08:24:52 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:17433 Sat 24 Mar 2018 08:01:39 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:19793 Sat 24 Mar 2018 07:57:14 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:18020 Sat 24 Mar 2018 07:56:38 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20589 Sat 24 Mar 2018 07:55:35 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20591 Sat 24 Mar 2018 07:55:31 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:21212 Sat 24 Mar 2018 07:52:53 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:21348 Sat 24 Mar 2018 07:51:29 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:21028 in situ scanning tunnelling microscopy (STM) has been employed to elucidate the structure of the charged Au(111)–ionic liquid (1-butyl-1-methylpyrrolidinium tris(pentafluoroethyl)trifluorophosphate, [Py_1,4]FAP) interface in the presence of 0.1 M LiCl. The addition of the Li salt to the ionic liquid has a strong influence on the interfacial structure. In the first STM scan in situ measurements reveal that Au(111) undergoes the (22 x √3) 'herringbone' reconstruction in a certain potential regime, and there is strong evidence that the gold surface dissolves at negative electrode potentials in [Py_1,4]FAP containing LiCl. Bulk deposition of Li is obtained at −2.9 V in the second STM scan.]]> Sat 24 Mar 2018 07:50:31 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27116 Sat 24 Mar 2018 07:41:36 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29904 Sat 24 Mar 2018 07:40:58 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26086 Sat 24 Mar 2018 07:39:54 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:28594 Sat 24 Mar 2018 07:37:28 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26212 Sat 24 Mar 2018 07:36:32 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27923 Sat 24 Mar 2018 07:36:08 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27922 [Li(G4)]ClO₄ > [Li(G3)]TFSI due to decreased availability of Li⁺ for PEO coordination. For the same glyme length, the solvent qualities of SILs with TFSI⁻ and BETI⁻ anions ([Li(G4)]TFSI and [Li(G4)]BETI) are very similar because they weakly coordinate with Li⁺, which facilitates Li⁺–PEO interactions. [Li(G4)]ClO₄ presents a poorer solvent environment for PEO than [Li(G4)]BETI because ClO₄⁻ binds more strongly to Li⁺ and thereby hinders interactions with PEO. [Li(G3)]TFSI is the poorest PEO solvent of these SILs because G3 binds more strongly to Li⁺ than G4. Rheological and radius of gyration (R_g) data as a function of PEO concentration show that the PEO overlap concentrations, c* and c**, are similar in the three SILs.]]> Sat 24 Mar 2018 07:36:08 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29604 Sat 24 Mar 2018 07:32:11 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26070 Sat 24 Mar 2018 07:31:30 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30074 2]). The thermoelectrochemical process is entropically-driven by release of the glyme from the lithium–glyme complex cation, due to electrodeposition of lithium metal at the hotter lithium electrode with concomitant electrodissolution at the cooler lithium electrode. The optimum ratio for thermochemical electricity generation is not the solvate ionic liquid (equimolar mixture of Li[NTf₂] and glyme), but rather one Li[NTf₂] to four G4, due to the mixtures relatively high ionic conductivity and good apparent Seebeck coefficient (+1.4 mV K⁻¹). Determination of the lithium–glyme mixture thermal conductivity enabled full assessment of the Figure of Merit (ZT), and the efficiency relative to the Carnot efficiency to be determined. As the lithium electrodeposits are porous, alternating the temperature gradient results in a system that actually improves with repeated use.]]> Sat 24 Mar 2018 07:31:16 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29990 Sat 24 Mar 2018 07:28:53 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27760 Sat 24 Mar 2018 07:27:43 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26696 Sat 24 Mar 2018 07:26:23 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26535 Sat 24 Mar 2018 07:23:27 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26538 Sat 24 Mar 2018 07:23:26 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24137 3+ system, less obviously for the divalent ions and not at all for monovalent ions. This difference is attributed to the strength of electrostatic interactions between metal ions and mica charge sites increasing with the ion charge, which means that divalent and (particularly) trivalent ions are located more precisely above the charged sites of the mica lattice. The images obtained allow important distinctions between metal ion adsorption at mica-water and mica-PAN interfaces to be made.]]> Sat 24 Mar 2018 07:16:33 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:25095 Sat 24 Mar 2018 07:15:03 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24931 Sat 24 Mar 2018 07:14:20 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:23811 Sat 24 Mar 2018 07:12:52 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:23832 Sat 24 Mar 2018 07:12:13 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24549 Sat 24 Mar 2018 07:11:33 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:23753 Sat 24 Mar 2018 07:11:10 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:23913 Sat 24 Mar 2018 07:10:04 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36404 iC₈)₂PO₂) diluted in octane lubricated as effectively as pure IL. However, until now the structure and composition of the lubricating adsorbed layer, which is critical for lubrication, was unknown. Here, the unconfined structure of the IL adsorbed layer at the oil-silica interface has been studied using neutron reflectometry. Multiple neutron contrasts revealed an 8 Å thick adsorbed layer, even at 60 and 80 °C. The ratio of cations and anions in the layer was investigated by synthesizing the IL with deuterated cations and measuring its reflectivity at the oil-silica interface. At 60 °C the layer was composed of 48 ± 6 mol % P₆,₆,₆,₁₄⁺ cations, 24 ± 2 mol % (ⁱC⁸)₂PO₂⁻ anions, and 28 ± 8 mol % octane, while at 80 °C the composition was 50 ± 2 mol % P₆,₆,₆,₁₄⁺, 28 ± 2 mol % (ⁱC₈)₂PO₂⁻ anions, and 22 ± 2 mol % octane. These results reinforce the importance of the judicious selection of IL cations and anions for charged surfaces and support their use in high-temperature applications.]]> Mon 27 Apr 2020 13:54:03 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24002 in situ techniques: scanning tunneling microscopy (STM), atomic force microscopy (AFM), and electrochemical quartz crystal microbalance (EQCM). These techniques reveal that under similar conditions TaF₅ is more easily reduced in the liquids with [TFSA]⁻ than [FAP]-anions. Increasing the temperature reduced the viscosity and density of the ionic liquids which facilitates TaF₅ electroreduction, in particular, in [Py₁,₄]TFSA. A herringbone reconstruction of the Au electrode was observed by STM for both ionic liquids with and without TaF₅. Ta deposition was proved by STM and EQCM in [Py₁,₄]TFSA. Cracked layers, with ionic liquid trapped inside, were obtained by direct plating from the [TFSA]⁻ ionic liquid. No Ta containing deposits could be obtained in the liquid with the [FAP]⁻ anion.]]> Mon 23 Sep 2019 10:21:47 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:19863 Mon 12 Aug 2019 14:17:31 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20324 Fri 28 Aug 2015 14:20:28 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43563 Fri 23 Sep 2022 11:43:37 AEST ]]>