https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33358 Wed 29 Mar 2023 12:44:46 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54555 Wed 28 Feb 2024 09:08:42 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54552 Wed 28 Feb 2024 07:28:41 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50054 Wed 27 Mar 2024 06:58:19 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42500 Wed 24 Aug 2022 09:11:19 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52597 Wed 18 Oct 2023 08:50:15 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:43207 Wed 14 Sep 2022 11:53:42 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47191 2 in the atmosphere needs to be curbed with suitable measures including the reduction of CO₂ emissions at stationary point sources such as power plants through carbon capture technologies and subsequent conversion of the captured CO₂ into non-polluting clean fuels/chemicals using photo and/or electrocatalytic pathways. Porous materials have attracted much attention for carbon capture and in the recent past; they have witnessed significant advancements in their design and implementation for CO₂ capture and conversion. In this context, the emerging trends in major porous adsorbents such as MOFs, zeolites, POPs, porous carbons, and mesoporous materials for CO2 capture and conversion are discussed. Their surface texture and chemistry, and the influence of various other features on their efficiency, selectivity, and recyclability for CO₂ capture and conversion are explained and compared thoroughly. The scientific and technical advances on the material structure versus CO₂ capture and conversion provide deep insights into designing effective porous materials. The review concludes with a summary, which compiles the key challenges in the field, current trends and critical challenges in the development of porous materials, and future research directions combined with possible solutions for realising the deployment of porous materials in CO₂ capture and conversion.]]> Wed 14 Dec 2022 16:09:47 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44406 Wed 12 Oct 2022 14:43:31 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50279 Wed 12 Jul 2023 16:38:07 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:40643 Wed 10 Aug 2022 13:42:52 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42283 Wed 07 Feb 2024 18:01:24 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54643 Wed 06 Mar 2024 20:26:37 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55527 Wed 05 Jun 2024 09:24:02 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52140 Wed 04 Oct 2023 09:53:24 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49756 Tue 30 May 2023 17:49:40 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47353 Tue 30 Apr 2024 15:16:20 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48665 3 upon extrinsic La or Sb doping, which has excited significant research attention. In this work, we report the realization of a two-dimensional electron gas (2DEG) on the surface of transparent BaSnO₃ via oxygen vacancy creation, which exhibits a high carrier density of ~7.72 × 10¹⁴ cm₋₂ and a high room-temperature mobility of ~18 cm₂·V⁻¹·s⁻¹. Such a 2DEG is rather sensitive to strain and a less than 0.1% in-plane biaxial compressive strain leads to a giant resistance enhancement of ~350% (more than 540 kΩ/□) at room temperature. Thus, this work creates a new path to exploring the physics of low-dimensional oxide electronics and devices applicable at room temperature.]]> Tue 28 Mar 2023 10:08:04 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:38975 Tue 22 Mar 2022 17:45:30 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53293 Tue 21 Nov 2023 11:55:18 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:56250 Tue 20 Aug 2024 16:10:48 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54875 Tue 19 Mar 2024 19:54:55 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51214 Tue 14 Nov 2023 14:48:48 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48286 Tue 14 Mar 2023 11:32:03 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51644 Tue 12 Sep 2023 20:14:39 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44337 Tue 11 Oct 2022 19:21:30 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50377 Tue 08 Aug 2023 14:08:09 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54159 Tue 06 Feb 2024 12:25:12 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54121 Tue 06 Feb 2024 11:30:03 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54120 -1 at 0.5 A g^-1 ), large specific capacity for sodium-ion battery (349 mAg h^-1 at 50 mAh g^-1 ), and excellent CO₂ adsorption capacity (27.14 mmol g^-1 at 30 bar). Density functional theory calculations demonstrate that different adsorption sites (B-C, B-N, C-N, and C-C) and the large specific surface area strongly support the high adsorption capacity. This finding offers an innovative breakthrough in the design and development of MBCN nanostructures for energy storage and carbon capture applications.]]> Tue 06 Feb 2024 11:29:36 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:40103 2 is used to study its magnetic properties. In detail, single crystal WSe₂ is codoped with 4 at% Co and various concentrations of Nb by employing the physical ion implantation method. Raman, X-ray diffraction and X-ray photoelectron spectroscopy results reveal the effective substitutional doping of implanted elements (Co and Nb). Magnetic measurements illustrate that both un-doped and 4 at% Co doped WSe₂ show weak ferromagnetism whereas magnetization is strongly enhanced when Co and Nb are codoped into WSe₂. The magnetization is comparable with a ferromagnet, which may be attributed to Co, Nb doping and defects. In addition, a large coercivity of ≈1.2 kOe is observed in the 1 at% Nb–4 at% Co codoped WSe₂ sample, which may be ascribed to the combined effect of doping-induced stress, defect-dictated pinning and anisotropy of Nb-Se bond owing to the charge transfer between Nb and Se ions.]]> Tue 05 Jul 2022 11:09:36 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55856 Tue 02 Jul 2024 15:11:01 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45145 3Al₂O₆ (a-SAO) on SrTiO₃ (STO) at room temperature. The 2DEG can be repeatedly erased or recreated by depositing the a-SAO or dissolving in water, respectively. Photoluminescence results show that the 2DEG arises from the a-SAO–induced oxygen vacancy. Furthermore, by gradually depleting the 2DEG, a transition of nonlinear to linear Hall effect is observed, demonstrating an unexpected interfacial band structure. The convenience and repeatability in the creation of the water-dissolvable 2DEG with rich physics could potentially contribute to the exploration of next generation electronics, such as environment-friendly or water-soluble electronics.]]> Thu 27 Oct 2022 14:25:18 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50518 Thu 27 Jul 2023 15:02:29 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50497 Thu 27 Jul 2023 10:50:34 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46251 Thu 23 Mar 2023 09:46:38 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46376 2 nanoclusters along the pore wall structure using dairy milk as a carbon and calcium source through nano-hard templating approach wherein mesoporous silica SBA-15 with different pore diameters are used as template. CaF₂ is introduced during the removal process of silica template and can help to enhance the charge transfer. Nitrogen adsorption results reveal that the prepared materials exhibit high specific surface area with bimodal porous structures which act as a media for the rapid ion transports through the regular and interconnected micro- and mesoporous structure. The mesoporous carbon samples also exhibit hexagonally ordered pores with rod shaped morphology, which is similar to that of the template, confirming that the templating process is successful. Finally, the optimised electrode is highly stable and offers the capacitance of 182 F g^-1 at 0.5 A g^-1 with almost 100% retention rate even after 5000 cycles due to a strong intimate coupling generated by the CaF₂ nanoclusters within the wall structure. The electrode performance of milk derived carbon samples is much better than that of activated carbon, multiwalled carbon nanotubes and the mesoporous carbons without CaF₂.]]> Thu 17 Nov 2022 09:55:45 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44420 Thu 13 Oct 2022 09:37:23 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52445 4+/Ce³⁺ compositions. Using DFT calculations combined with Bader charge analysis, it is demonstrated that stoichiometric ceria registers a higher oxidase mimetic activity than oxygen-deficient ceria with a low Ce⁴⁺/Ce³⁺ ratio due to a higher charge transfer from a substrate, 3,3',5,5' tetramethylbenzidine (TMB), to the ceria surface. We also show that the fluoride ions can significantly increase the charge transfer from the TMB surface to ceria irrespective of the surface Ce⁴⁺/Ce³⁺ ratio. Using this knowledge, we first compare the fluoride sensing properties of nanoceria with high Ce⁴⁺ and mixed Ce⁴⁺/Ce³⁺ oxidation states and further demonstrate that the linear detection range of fluoride ions can be extended to 1-10 ppm for nanoceria with mixed oxidation states. Then, we also demonstrate an assay for fluoride assisted detection of glutathione, an antioxidant with elevated levels during cancer, using nanoceria with a high surface Ce⁴⁺/Ce³⁺ ratio. The addition of fluoride ions in this assay allows the detection of glutathione in the linear range of 2.5-50 ppm with a limit of detection (LOD) of 3.8 ppm. These studies not only underpin the role of the surface Ce⁴⁺/Ce³⁺ ratio in tuning the fluoride assisted boost in the oxidase mimetic activity of nanoceria but also its strategic application in designing better colourimetric assays.]]> Thu 12 Oct 2023 15:28:04 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50896 Thu 10 Aug 2023 10:22:25 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47325 Thu 02 May 2024 15:10:36 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55793 Sat 22 Jun 2024 12:48:03 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49715 Mon 29 May 2023 14:52:38 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44368 Mon 29 Jan 2024 18:53:17 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44408 Mon 29 Jan 2024 18:52:29 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48452 Mon 29 Jan 2024 18:51:18 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48009 Mon 29 Jan 2024 18:45:16 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48406 Mon 29 Jan 2024 18:44:42 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50782 Mon 29 Jan 2024 18:40:29 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39011 Mon 29 Jan 2024 18:37:32 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50789 2 exhibits superior hydrogen evolution reaction (HER) performance than natural 2H-phase MoS₂ owing to its higher electrical conductivity and abundance of active sites. However, the reported 1T-MoS₂ catalysts usually suffer from extreme instability, which results in quick phase transformation at ambient conditions. Herein, we present a facile approach to engineer the phase of MoS₂ by introducing intercalated hydrazine. Interestingly, the as-synthesized 1T-dominant MoS₂ sample demonstrates excellent ambient stability without noticeable degradation for 3 months. Additionally, the 1T-dominant MoS₂ exhibits superior electrical conductivity (∼700 times higher than that of 2H-MoS₂) and improved electrochemical catalytic performance (current density ∼12 times larger than that of 2H-MoS₂ at an overpotential of 300 mV vs the reversible hydrogen electrode, RHE). Through experimental characterizations and density functional theory (DFT) calculation, we conclude that the stabilization of the metallic phase could be attributed to the electron donation from hydrazine molecules to the adjacent Mo atoms. The phase control strategy in this work provides a guideline to develop other highly efficient and stable two-dimensional (2D) electrocatalysts.]]> Mon 29 Jan 2024 18:35:21 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49141 Mon 29 Jan 2024 18:33:06 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51886 Mon 29 Jan 2024 18:32:53 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50301 Mon 29 Jan 2024 18:28:01 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50887 Mon 29 Jan 2024 18:27:36 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50892 Mon 29 Jan 2024 18:24:55 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53866 Mon 29 Jan 2024 18:24:39 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52716 Mon 29 Jan 2024 18:23:04 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50891 Mon 29 Jan 2024 18:22:27 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44407 Mon 29 Jan 2024 17:54:46 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39863 2/g). UV–Vis and PL spectra show that the absorption edges of mesoporous gCNs are slightly blue-shifted and the PL intensity is remarkably suppressed. The photocatalytic hydrogen evolution activity of gCN-KIT-6 under solar simulated irradiation is 1.92 mmol·g⁻¹ h⁻¹ which is much higher than that of gCN with 2D mesoporous structure, gCN from silica nanoparticle and bulk nonporous gCN. This high photocatalytic activity of gCN-KIT-6 can be attributed to 3D structure and the retarded electron-hole recombination.]]> Mon 29 Jan 2024 17:49:59 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46323 3N₄ (P-CN) for advanced photocatalytic applications. Phosphorus doping and structural coupling with CdSe QDs are shown to significantly extend visible-light response of g-C₃N₄ up to 700 nm. The optimized sample 4CdSe/P-CN demonstrates enhanced visible-light driven overall water splitting activities for H₂ and O₂ evolution i.e. 113 and 55.5 μmol.h⁻¹.g⁻¹, respectively, as well as very high photocatalytic CO₂ to CH₄ conversion efficiency (47 μmol.h⁻¹.g⁻¹). It also exhibit higher activity (78 %) for 2,4-dichlorophenol degradation as compared to pristine CN-sample. Combined photoluminescence, transient/single wavelength photocurrent, photoelectrochemical, and coumarin fluorescence spectroscopy demonstrate that 4CdSe/P-CN nanocomposite exhibit enhanced charge separation efficiency which is responsible for improved visible light catalytic activities. Our work thus provide a new strategy to design low-cost and sustainable photocatalysis with wide visible-light activity for practical overall water splitting and CO₂ reduction applications.]]> Mon 29 Jan 2024 17:44:21 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46564 Mon 29 Jan 2024 17:44:08 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55408 Mon 27 May 2024 12:11:27 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44910 Mon 24 Oct 2022 16:17:24 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44788 Mon 24 Oct 2022 09:17:58 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53883 Mon 22 Jan 2024 12:50:50 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53208 Mon 20 Nov 2023 14:41:58 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55687 Mon 17 Jun 2024 10:24:57 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:56166 Mon 12 Aug 2024 09:57:34 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52347 Mon 09 Oct 2023 14:56:52 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52334 Mon 09 Oct 2023 14:50:27 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52284 Mon 09 Oct 2023 10:03:25 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49263 Mon 08 May 2023 13:37:13 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:40096 Mon 08 Aug 2022 11:55:23 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46764 Mon 06 May 2024 15:37:59 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:40179 Fri 29 Jul 2022 13:55:19 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48089 Fri 24 Feb 2023 15:16:54 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37282 cat⁻¹ h⁻¹ and a Faradaic efficiency as high as 8.3% at a low overpotential (0.05 V vs the reversible hydrogen electrode), which is far better than that of the bulk Ru counterpart. Moreover, the Ru SAs/g-C₃N₄ displays a high stability during five recycling tests and a 12 h potentiostatic test. Density functional theory calculations reveal that compared to bulk Ru surfaces, Ru SAs/g-C₃N₄ has more facile reaction thermodynamics, and the enhanced NRR performance of Ru SAs/g-C₃N₄ originates from a tuning of the d-electron energies from that of the bulk to a single-atom, causing an up-shift of the d-band center toward the Fermi level.]]> Fri 23 Aug 2024 11:59:44 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51934 Fri 22 Sep 2023 11:07:03 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50823 Fri 18 Aug 2023 11:02:55 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53222 Fri 17 Nov 2023 11:44:31 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51753 Fri 15 Sep 2023 18:27:52 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51702 Fri 15 Sep 2023 13:41:02 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:40577 Fri 15 Jul 2022 10:25:12 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49395 Fri 12 May 2023 14:34:01 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55973 Fri 12 Jul 2024 14:31:02 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46128 Fri 11 Nov 2022 15:22:03 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50926 Fri 11 Aug 2023 16:01:02 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51522 Fri 08 Sep 2023 12:05:14 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49149 Fri 05 May 2023 12:20:55 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55052 Fri 05 Apr 2024 09:13:49 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39982 Fe₃GeTe₂ (FGT) can be largely modulated by a protonic gate. With the increase of the protons intercalated among vdW layers, interlayer magnetic coupling increases. Because of the existence of antiferromagnetic layers in FGT nanoflakes, the increasing interlayer magnetic coupling induces exchange bias in protonated FGT nanoflakes. Most strikingly, a rarely seen zero-field cooled (ZFC) exchange bias with very large values (maximally up to 1.2 kOe) has been observed when higher positive voltages (V_g ≥ 4.36  V) are applied to the protonic gate, which clearly demonstrates that a strong interlayer coupling is realized by proton intercalation. Such strong interlayer coupling will enable a wider range of applications for vdW magnets.]]> Fri 01 Jul 2022 10:33:31 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53508 Fri 01 Dec 2023 10:44:39 AEDT ]]>