https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Bifunctional hydrogen production and storage on 0D-1D heterojunction of Cd₀.₅Zn₀.₅S@Halloysites https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37201 0.5Zn0.5S@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 Cd0.5Zn0.5S separately to halloysites and outer surface Pt sites, achieving efficient directional separation between h+ and e− and inhibiting the h⁺‐dominated photocorrosion occurring on Cd0.5Zn0.5S. 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 Cd0.5Zn0.5S. 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 ]]> Z-scheme g-C₃N₄/Bi₂O₂[BO₂(OH)] heterojunction for enhanced photocatalytic CO₂ reduction https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:38073 -1 h-1, which is 2.78 times higher that of pristine g-C₃N₄. The largely strengthened photocatalytic CO2 reduction activity mainly originates from the formation of Z-scheme band structures between g-C₃N₄ and Bi₂O₂[BO₂(OH)] benefiting for the efficient charge separation, which was confirmed by the photoeletrochemical, photoluminescence and ESR spectra. This study provides a new reference for fabrication of high-performance Z-scheme photocatalysts for CO₂ reduction.]]> Tue 03 Aug 2021 13:27:42 AEST ]]> Z-scheme g-C₃N₄/Bi₄NbO₈Cl heterojunction for enhanced photocatalytic hydrogen production https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:35911 420 nm), and the H₂ evolution rate is 6.9 and 67.2 times higher than those of bare g-C₃N₄ and Bi₄NbO₈Cl, respectively. The stronger photoabsorption of g-C₃N₄/Bi₄NbO₈Cl (beyond 500 nm) allows generation of more photons than does g-C₃N₄. More importantly, the separation and transfer of photoexcited charge carriers were greatly improved between g-C₃N₄ and Bi₄NbO₈Cl, as revealed by the photoelectrochemical and time-resolved photoluminescence decay results. The Z-scheme charge transfer mechanism of g-C₃N₄/Bi₄NbO₈Cl was also manifested by electron spin resonance (ESR). The work furnishes a new solution to fabrication of high-efficiency Z-scheme catalysts for countering energy issues.]]> Fri 17 Jan 2020 16:37:49 AEDT ]]>