https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:37201 0.5Zn_0.5S@halloysite nanotubes tertiary structure is designed via facile in situ assembly, which settles all the above‐mentioned issues and achieves exceptional and stable photocatalytic H₂ evolution and storage. Significantly, EDTA grafted on halloysites as the hole (h⁺) traps steers the photogenerated h⁺ and electrons (e−) from Cd_0.5Zn_0.5S separately to halloysites and outer surface Pt sites, achieving efficient directional separation between h+ and e− and inhibiting the h⁺‐dominated photocorrosion occurring on Cd_0.5Zn_0.5S. Benefiting from these advantages, the hierarchy shows an unprecedented photocatalytic H₂ evolution rate of 25.67 mmol g⁻¹ h⁻¹ with a recording apparent quantum efficiency of 32.29% at λ = 420 nm, which is seven‐fold that of Cd_0.5Zn_0.5S. Meanwhile, an H₂ adsorption capacity of 0.042% is achieved with the room temperature of 25°C and pressure of 2.65 MPa. This work provides a new perspective into designing hierarchical structure for H₂ evolution, and proposes an integration concept for H₂ evolution and storage.]]> Wed 24 Jan 2024 15:11:12 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39876 Wed 06 Jul 2022 08:57:24 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:41142 2 V⁻¹ s⁻¹, respectively. Most intriguingly, a clear charge-carrier-polarity change is observed when the devices are measured under vacuum. The pDPF-DTF2 polymer exhibits a balanced ambipolar performance with the µ_h/µ_e ratio of 1.9, whereas pDPSe-DTF2 exhibits p-type dominated charge carrier transport properties with the µ_h/µ_e ratio of 26.7. Such a charge carrier transport change is due to the strong electron-donating nature of the selenophene. Furthermore, pDPPy-DTF2 with electron-withdrawing pyridine flanking units demonstrates unipolar n-type charge transport properties with an electron mobility as high as 0.20 cm2 V⁻¹ s⁻¹. Overall, this study demonstrates a simple yet effective approach to switch the charge carrier polarity in transistors by varying the electron affinity of flanking groups of the diketopyrrolopyrrole unit.]]> Wed 01 May 2024 15:47:56 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49756 Tue 30 May 2023 17:49:40 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50320 Tue 18 Jul 2023 14:51:03 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:38508 Tue 12 Oct 2021 15:46:00 AEDT ]]> https://ogma.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.]]> Tue 05 Sep 2023 11:57:42 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50531 Thu 27 Jul 2023 16:26:59 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46490 Thu 24 Nov 2022 11:52:53 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47416 Thu 19 Jan 2023 16:19:30 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43339 Thu 15 Sep 2022 15:11:28 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47325 Thu 02 May 2024 15:10:36 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46819 2⁻), hydrogen peroxide (H₂O₂), and hydroxyl radicals (•OH) via oxygen reduction reaction (ORR), by using Bi₄NbO₈X (X = Cl, Br) single crystalline nanoplates. Significantly, the piezo-photocatalytic process leads to the highest ORR performance of the Bi₄NbO₈Br nanoplates, exhibiting •O₂⁻, H₂O₂, and •OH evolution rates of 98.7, 792, and 33.2 µmol g⁻¹ h⁻¹, respectively. The formation of a polarized electric field and band bending allows directional separation of charge carriers, promoting the catalytic activity. Furthermore, the reductive active sites are found enriched on all the facets in the piezo–photocatalytic process, also contributing to the ORR. By piezo–photodeposition of Pt to artificially plant reductive reactive sites, the Bi₄NbO₈Br plates demonstrate largely enhanced photocatalytic H2 production activity with a rate of 203.7 µmol g⁻¹ h⁻¹. The present work advances piezo–photocatalysis as a new route for ROS generation, but also discloses the potential of piezo–photocatalytic active sites enriching for H₂ evolution.]]> Thu 01 Dec 2022 10:40:44 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39011 Mon 29 Jan 2024 18:37:32 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50301 Mon 29 Jan 2024 18:28:01 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40925 Mon 25 Jul 2022 15:11:17 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39338 Fri 25 Aug 2023 10:12:20 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:41820 Fri 12 Aug 2022 12:52:30 AEST ]]>