https://nova.newcastle.edu.au/vital/access/manager/Index ${session.getAttribute("locale")} 5 Unprecedented eighteen-faceted BiOCl with a ternary facet junction boosting cascade charge flow and photo-redox https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:35508 Wed 24 Jun 2020 14:44:42 AEST ]]> Photocatalysis Enhanced by External Fields https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:49498 Wed 22 Nov 2023 15:05:51 AEDT ]]> Strategies for Improving the Photocatalytic Hydrogen Evolution Reaction of Carbon Nitride-Based Catalysts https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:52597 Wed 18 Oct 2023 08:50:15 AEDT ]]> The role of polarization in photocatalysis https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:36650 Tue 23 Jun 2020 14:49:43 AEST ]]> Surface engineered 2D materials for photocatalysis https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:40873 Tue 19 Jul 2022 14:24:26 AEST ]]> Conducting polymer based visible light photocatalytic composites for pollutant removal: Progress and prospects https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:52538 Tue 17 Oct 2023 10:12:50 AEDT ]]> Anti‐Stoke effect induced enhanced photocatalytic hydrogen production https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:51644 Tue 12 Sep 2023 20:14:39 AEST ]]> Bio-inspired Supramolecular Self-assembled Carbon Nitride Nanostructures for Photocatalytic Water Splitting https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:54127 Tue 06 Feb 2024 11:28:51 AEDT ]]> Preparation of visible light photocatalytic graphene embedded rutile titanium(IV) oxide composite nanowires and enhanced NOx removal https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:34742 2-based photocatalysts is continuing and, in particular, evolving a new strategy is an important aspect in this regard. In general, much effort has been devoted to the anatase TiO2 modifications, despite there being only a few recent studies on rutile TiO2 (rTiO2). To the best of our knowledge, studies on the preparation and characterization of the photocatalysts based on the intentional inclusion of graphene (G) into rTiO2 nanostructures have not been reported yet. Herein, we develop a new type of TiO2-based photocatalyst comprising of G included pure rTiO2 nanowire (abbreviated as rTiO2(G) NW) with enhanced visible light absorption capability. To prepare rTiO2(G) NW, the G incorporated titanate electrospun fibers were obtained by electrospinning and subsequently heat treated at various temperatures (500 to 800 °C). Electrospinning conditions were optimized for producing good quality rTiO2(G) NW. The rTiO2(G) NW and their corresponding samples were characterized by appropriate techniques such as X-ray diffraction (XRD), scanning electron microscopy, high-resolution transmission electron microscopy and UV-vis diffuse reflectance spectroscopy to ascertain their material characteristics. XRD results show that the lattice strain occurs upon inclusion of G. We present here the first observation of an apparent bandgap lowering because of the G inclusion into TiO2 NW. While anatase TiO2 NW exhibited poor visible light photocatalysis towards NOx removal, the rTiO2(G) NW photocatalyst witnessed a significantly enhanced (~67%) photocatalytic performance as compared to anatase TiO2(G) NW. We concluded that the inclusion of G into rTiO2 nanostructures enhances the visible light photoactivity. A plausible mechanism for photocatalysis is suggested.]]> Tue 03 Sep 2019 18:02:02 AEST ]]> NaxWO3 +TiO2 nanocomposites as plasmonic photocatalysts for the degradation of organic dyes https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:41001 0.25) NaxWO3 were prepared. The degradation of rhodamine 6G (R6G) under visible and near infrared (NIR) light illumination was observed only when NaxWO3 and TiO2 were both present in the composite. Photocatalytic activity was generally higher in metallic samples than in semiconducting ones, but the sample with the highest activity had a mixture of both. This suggests that a combination of interband transitions and plasmonics-enhanced processes can be used together to catalyse reactions.]]> Thu 21 Jul 2022 10:30:19 AEST ]]> Synthesis of n-type TaON microspheres decorated by p-type Ag₂O with enhanced visible light photocatalytic activity https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:34836 in situ growth of Ag₂O nanoparticles (size: ~12 nm) on their surfaces was realized by a simple deposition method. All Ag₂O/TaON heterojunctions were much more active than pristine TaON or a mechanical mixture of Ag₂O and TaON in the degradation of organic pollutants (cationic dye rhodamine B, anionic dye methyl orange and neutral para-chlorophenol) under visible light (λ > 400 nm). Significantly, the highest photocatalytic activity was observed in the heterojunction with a Ag/Ta molar ratio of 0.1/1 (0.1Ag-Ta). The RhB degradation rate constant using 0.1Ag-Ta is approximately 9.7 and 3.1 times higher than those obtained by using TaON microspheres, and the mechanical mixture, respectively. The superior photocatalytic performance of Ag₂O/TaON is ascribed to the hierarchical superstructure and efficient charge separation. The mainly involved active species (holes and superoxide radicals) were identified via radical trapping experiments and electron paramagnetic resonance spectroscopy. The results demonstrate that Ag₂O/TaON is a potential VLD photocatalyst for wastewater treatment.]]> Thu 16 May 2019 14:08:57 AEST ]]> Photocatalytic degradation of azo dye acid orange 7 usingdifferent light sources over Fe3+-doped TiO2 nanocatalysts https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:43353 400 nm) and solar light irradiation. The role of hydrogen peroxide to enhance the catalyst’s efficiency was examined. The reaction pathway of complete mineralization was investigated by monitoring the temporal evolution of reaction intermediates and low molecular weight organic acids (LMWOA) as final products in solution. These LMWOAs are oxidized eventually to inorganic ions such a nitrate, sulfate, oxalate etc, which are confirmed using GC–MS, UV–Vis and Ion Chromatographic analyses. The optimized conditions of photocatalytic degradation were obtained for degradation under different light source. The Fe-doped TiO2 showed high dye degradation efficiency under both UV (100%), visible (100%) and solar light (90%) which distinguishes Fe-doped TiO2 from materials in literature that are only efficient in particular light source for dye degradation. Furthermore, the Fe doped titania photocatalysts are stable and can maintain performance up to 6 recycle use. Reaction kinetics for UV and solar light induced degradation followed first order reaction whereas visible light degradation followed a zero-order reaction.]]> Thu 15 Sep 2022 15:32:33 AEST ]]> Facile synthesis of flower-like Ag₃VO₄/Bi₂WO₆ heterojunction with enhanced visible-light photocatalytic activity https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:34102 in-situ anchoring Ag₃VO₄ nanoparticles (size: ~21 nm) on the surface of Bi₂WO₆ microflowers (diameter: 2.5-4.5 µm) by a facile deposition route. The photocatalytic activity of these heterojunctions were studied by decomposing cationic dye rhodamine B (RhB), anionic dye methyl orange (MO) and neutral para-chlorophenol (4-CP) under visible light irradiation (λ > 400 nm). Among all the tested catalysts, the heterojunction with a Ag₃VO₄/Bi₂WO₆ molar ratio of 0.15/1 displays the maximum activity with the RhB degradation rate constant of up to 0.0392 min-1, a 6.7 or 1.7 times more enhancement compared with the pure Bi₂WO₆ or Ag₃VO₄. It is found that the introduction of Ag₃VO₄ is in favor of suppressing the electron-hole pair recombination of Bi₂WO₆, leading to an enhanced photocatalytic activity with good stability. The photogenerated holes (h⁺) and superoxide radicals (O·₂¯) play critical roles during the photocatalytic process. Ag₃VO₄/Bi₂WO₆ will have great potential in applications for environmental remediation due to the facile preparation method and superior photocatalytic activity.]]> Thu 07 Feb 2019 14:26:20 AEDT ]]> A β-cyclodextrin modified graphitic carbon nitride with au co-catalyst for efficient photocatalytic hydrogen peroxide production https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:38378 2O2) production has attracted considerable attention as a renewable and environment-friendly method to replace other traditional production techniques. The performance of H2O2 production remains limited by the inertness of graphitic carbon nitride (CN) towards the adsorption and activation of O2. In this work, a photocatalyst comprising of β-cyclodextrin (ß-CD)-modified CN with supporting Au co-catalyst (Au/β-CD-CN) has been utilized for effective H2O2 production under visible light irradiation. The static contact angle measurement suggested that β-CD modification increased the hydrophobicity of the CN photocatalyst as well as its affinity to oxygen gas, leading to an increase in H2O2 production. The rate of H2O2 production reached more than 0.1 mM/h under visible-light irradiation. The electron spin resonance spectra indicated that H2O2 was directly formed via a 2-electron oxygen reduction reaction (ORR) over the Au/β-CD-CN photocatalyst.]]> Thu 02 Sep 2021 12:42:32 AEST ]]> Photocatalytic removal of taste and odour compounds for drinking water treatment https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:7992 Sat 24 Mar 2018 10:45:22 AEDT ]]> Photosensitive oxide semiconductors: materials for solar hydrogen fuel https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:19568 Sat 24 Mar 2018 07:58:17 AEDT ]]> Photosensitive oxide semiconductors for solar hydrogen fuel and water disinfection https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:19773 Sat 24 Mar 2018 07:54:26 AEDT ]]> Photocatalytic degradation of geosmin and MIB in an immobilised Ti0₂ photoreactor https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:6226 Sat 24 Mar 2018 07:44:24 AEDT ]]> Synergistic effect of photocatalysis and adsorption of nano-TiO₂ self-assembled onto sulfanyl/activated carbon composite https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:25418 Sat 24 Mar 2018 07:27:22 AEDT ]]> Photocatalytic water splitting utilizing electrospun semiconductors for solar hydrogen generation: Fabrication, modification and performance https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:49522 Sat 20 May 2023 12:38:55 AEST ]]> A review of microreactors based on slurry Taylor (segmented) flow https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:45781 Sat 05 Nov 2022 12:35:15 AEDT ]]> Synthesis and bader analyzed cobalt-phthalocyanine modified solar UV-blind β-Ga<inf>2</inf>O<inf>3</inf> quadrilateral nanorods photocatalysts for wide-visible-light driven H<inf>2</inf> evolution https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:48009 Mon 29 Jan 2024 18:45:16 AEDT ]]> Atomic-level charge separation strategies in semiconductor-based photocatalysts https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:46331 Mon 29 Jan 2024 18:37:54 AEDT ]]> Amine-CdS for exfoliating and distributing bulk MoO3 for photocatalytic hydrogen evolution and Cr(VI) reduction https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:43467 Mon 29 Jan 2024 18:37:40 AEDT ]]> Advanced nanomaterials for highly efficient CO2 photoreduction and photocatalytic hydrogen evolution https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:50821 Mon 29 Jan 2024 18:27:31 AEDT ]]> Design of an ocu-Metal-Organic Framework for a Photocatalysis Reaction https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:51071 Mon 29 Jan 2024 18:20:53 AEDT ]]> Thin-layered photocatalysts https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:40925 Mon 25 Jul 2022 15:11:17 AEST ]]> Catalytic membrane with multiscale iron-based catalysts anchored on 2D/2D hybrid g-C₃N₄/layered clay for pollutant removal https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:53208 Mon 20 Nov 2023 14:41:58 AEDT ]]> Nanostructured carbon nitrides for CO2 capture and conversion https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:46189 Mon 14 Nov 2022 10:48:06 AEDT ]]> Surface engineering to reduce the interfacial resistance for enhanced photocatalytic water oxidation https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:40875 µmol/g·h, which is approximately 14 times higher than that of the bare am@TiO₂. Moreover, an apparent quantum yield (AQY) of 18.99% is obtained under LED-405 illumination. This work provides a direction for improving the photocatalytic performance and helps to gain a fundamental understanding of the water oxidation steps.]]> Mon 08 Aug 2022 15:49:38 AEST ]]> Efficient photocatalytic degradation of gaseous benzene and toluene over novel hybrid PIL@TiO₂/m-GO composites https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:37934 Mon 05 Jul 2021 13:49:57 AEST ]]> Surface-halogenation-induced atomic-site activation and local charge separation for superb CO₂ photoreduction https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:36540 Mon 01 Jun 2020 12:07:38 AEST ]]> A novel heterostructure of BiOI nanosheets anchored onto MWCNTs with excellent visible-light photocatalytic activity https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:29921 Fri 24 Aug 2018 09:00:42 AEST ]]> Three-in-One oxygen vacancies: whole visible-spectrum absorption, efficient charge separation, and surface site activation for robust CO2 photoreduction https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:44274 2Bi2Nb2TiO12 nanosheets, which were prepared by a mineralizer‐assisted soft‐chemical method. Introduction of OVs on the surface of Sr2Bi2Nb2TiO12 extends photoresponse to cover the whole visible region and also tremendously promotes separation of photoinduced charge carriers. Adsorption and activation of CO2 molecules on the surface of the catalyst are greatly enhanced. In the gas‐solid reaction system without co‐catalysts or sacrificial agents, OVs‐abundant Sr2Bi2Nb2TiO12 nanosheets show outstanding CO2 photoreduction activity, producing CO with a rate of 17.11 μmol g−1 h−1, about 58 times higher than that of the bulk counterpart, surpassing most previously reported state‐of‐the‐art photocatalysts. Our study provides a three‐in‐one integrated solution to advance the performance of photocatalysts for solar‐energy conversion and generation of renewable energy.]]> Fri 23 Jun 2023 09:56:26 AEST ]]> Degradation of cephalexin toxicity in non-clinical environment using zinc oxide nanoparticles synthesized in Momordica charantia extract; Numerical prediction models and deep learning classification https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:51953 90%). These findings reflected the role of deep learning analysis in understanding the behavior of CFX for the degradation process.]]> Fri 22 Sep 2023 17:03:57 AEST ]]> Macroscopic spontaneous polarization and surface oxygen vacancies collaboratively boosting CO2 photoreduction on BiOIO3 single crystals https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:40091 2 photoreduction by coupling macroscopic spontaneous polarization and surface oxygen vacancies (OVs) of BiOIO3 single crystals is reported. The oriented growth of BiOIO3 single-crystal nanostrips along the [001] direction, ensuing substantial well-aligned IO3 polar units, renders a large enhancement for the macroscopic polarization electric field, which is capable of driving the rapid separation and migration of charges from bulk to surface. Meanwhile the introduction of surface OVs establishes a local electric field for charge migration to catalytic sites on the surface of BiOIO3 nanostrips. Highly polarized BiOIO3 nanostrips with ample OVs demonstrate outstanding CO2 reduction activity for CO production with a rate of 17.33 μmol g-1 h-1 (approximately ten times enhancement) without any sacrificial agents or cocatalysts, being one of the best CO2 reduction photocatalysts in the gas-solid system reported so far. This work provides an integrated solution to governing charge movement behavior on the basis of collaborative polarization from bulk and surface.]]> Fri 22 Jul 2022 13:41:21 AEST ]]> Titanium Phosphonate Based Metal–Organic Frameworks with Hierarchical Porosity for Enhanced Photocatalytic Hydrogen Evolution https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:41828 Fri 12 Aug 2022 12:52:33 AEST ]]> Thickness-Dependent Facet Junction Control of Layered BiOIO3 Single Crystals for Highly Efficient CO2 Photoreduction https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:41820 Fri 12 Aug 2022 12:52:30 AEST ]]> Carbon nitride based nanoarchitectonics for nature-inspired photocatalytic CO2 reduction https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:54657 Fri 08 Mar 2024 10:49:18 AEDT ]]>