https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Oxygen-Functionalized Mesoporous Activated Carbons Derived from Casein and Their Superior CO2 Adsorption Capacity at Both Low- and High-Pressure Regimes https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47719 Wed 25 Jan 2023 13:22:33 AEDT ]]> Atomic and electronic structures of graphene-decorated graphitic carbon nitride (g-C3N4) as a metal-free photocatalyst under visible-light https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49628 Wed 24 May 2023 13:32:39 AEST ]]> Strategies for Improving the Photocatalytic Hydrogen Evolution Reaction of Carbon Nitride-Based Catalysts https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52597 Wed 18 Oct 2023 08:50:15 AEDT ]]> Silica-based nanomaterials as drug delivery tools for skin cancer (melanoma) treatment https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39596 Wed 15 Jun 2022 12:47:16 AEST ]]> Egg-yolk core-shell mesoporous silica nanoparticles for high doxorubicin loading and delivery to prostate cancer cells https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:51674 Wed 13 Sep 2023 13:23:44 AEST ]]> 3D cubic mesoporous C₃N₄ with tunable pore diameters derived from KIT-6 and their application in base catalyzed Knoevenagel reaction https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36598 Wed 10 Jun 2020 15:12:43 AEST ]]> Controlled synthesis of three dimensional mesoporous C₃N₄ with ordered porous structure for room temperature Suzuki coupling reaction https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36832 Ia3d symmetry and controllable surface properties through a simple polymerization of an environmentally benign and non-toxic guanidine hydrochloride as a C and N precursor using KIT-6 with variable pore sizes as templates for Suzuki coupling reaction. The pore diameters (3.1-4.2 nm), specific surface areas (207-303 m2 g-1), and the specific pore volumes (0.58-0.71 cm3 g-1) of the MGCN-6 materials are finely controlled by varying the pore size of the templates used. The nano cavities of MGCN-6 with the highest specific surface area and a free amine groups are effectively utilized to chelate with Pd(OAC)₂ and applied the prepared catalysts for Suzuki coupling reaction between aryl halides with phenylboronic acid derivatives under very mild and sustainable reaction conditions. The Pd(OAC)₂/MGCN-6 is found to be very active and stable and exhibits an excellent reactivity and selectivity for all of substrates regardless of aryl halides with electron-withdrawing and electron donating groups at room temperature. The activity of the Pd(OAC)₂/MGCN-6 is much higher than that of non-porous bulk graphitic carbon nitride and 2D mesoporous carbon nitride.]]> Wed 08 Jul 2020 15:26:45 AEST ]]> The isopropylation of naphthalene over ordered mesoporous aluminosilicate AlSBA-1: The formation of diisopropylnaphthalene and triisopropylnaphthalene isomers https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52887 Tue 31 Oct 2023 10:46:23 AEDT ]]> The Isopropylation of Naphthalene over H-MCM22 (MWW): The Formation of Triisopropylnaphthalenes https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:53459 Tue 28 Nov 2023 11:13:57 AEDT ]]> Thermodynamically Stable Mesoporous C<sub>3</sub>N<sub>7</sub> and C<sub>3</sub>N<sub>6</sub> with Ordered Structure and Their Excellent Performance for Oxygen Reduction Reaction https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40922 2) are expected to offer superior basicity and unique electronic properties. However, the synthesis of these nanostructures is highly challenging since many parts of the C-N frameworks in the carbon nitride should be replaced with thermodynamically less stable N-N frameworks as the nitrogen content increases. Thermodynamically stable C3N7 and C3N6 with an ordered mesoporous structure are synthesized at 250 and 300 °C respectively via a pyrolysis process of 5-amino-1H-tetrazole (5-ATTZ). Polymerization of the precursor to the ordered mesoporous C3N7 and C3N6 is clearly proved by X-ray and electron diffraction analyses. A combined analysis including diverse spectroscopy and FDMNES and density functional theory (DFT) calculations demonstrates that the N-N bonds are stabilized in the form of tetrazine and/or triazole moieties in the C3N7 and C3N6. The ordered mesoporous C3N7 represents the better oxygen reduction reaction (ORR) performances (onset potential: 0.81 V vs reversible hydrogen electrode (RHE), electron transfer number: 3.9 at 0.5 V vs RHE) than graphitic carbon nitride (g-C3N4) and the ordered mesoporous C3N6. The study on the mechanism of ORR suggests that nitrogen atoms in the tetrazine moiety of the ordered mesoporous C3N7 act as active sites for its improved ORR activity.]]> Tue 16 Aug 2022 10:28:43 AEST ]]> The isopropylation of naphthalene over USY zeolite with FAU topology. The selectivities of the products https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46357 Tue 15 Nov 2022 14:33:56 AEDT ]]> Substitutional isomerism of triisopropylnaphthalenes in the isopropylation of naphthalene. Assignment by gas chromatography and confirmation by DFT calculation https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47076 Tue 13 Dec 2022 16:21:23 AEDT ]]> Anti‐Stoke effect induced enhanced photocatalytic hydrogen production https://ogma.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://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:54127 Tue 06 Feb 2024 11:28:51 AEDT ]]> Convenient design of porous and heteroatom self-doped carbons for CO₂ capture https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36793 2 g−1) and an appreciable amount of heteroatoms, nitrogen (4.4%) and oxygen (4.7%). PHC4 exhibits a high CO₂ adsorption capacity at 0 °C/1 bar (3.5 mmol g−1) and 0 °C/30 bar (15.8 mmol  g−1). Additionally, the presence of heteroatoms on the surface results in enhancement of interactions between CO₂ and the adsorbents which are evident from a high value of isosteric heat of adsorption (∼35 kJ mol−1) calculated using Clausius Clapeyron's equation. The reported activation synthesis strategy could be explored further to devise advanced functional nanomaterials for specific adsorption applications.]]> Thu 22 Jun 2023 10:25:37 AEST ]]> A geopolymer route to micro- and meso-porous carbon https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:38169 2O/(Si + Al), and their detailed porous structures were confirmed by TEM, N2 adsorption-desorption and X-ray diffraction measurements. The as-prepared geopolymers were then used as templates to replicate porous carbons with various structures and porosities for CO2 adsorption. To understand the correlation between the CO2 adsorptivity and porous structures, we tuned the porosity of the geopolymer-templated carbons by modifying the structures of the geopolymers. The porous carbons obtained from the hexagonal-type porous geopolymers were found to be composed of the aggregates of carbon nanowires exhibiting large particles, while those obtained from the wormhole-like porous geopolymers were determined to be wormhole type as well, as evidenced by TEM and X-ray diffraction studies. According to the CO2 adsorption isotherms of the porous carbons, the aggregates of carbon nanowires exhibited the highest CO2 adsorptivity due to their highest microporosity and largest specific surface area.]]> Thu 05 Aug 2021 15:57:46 AEST ]]> Triple Surfactant Assisted Synthesis of Novel Core-Shell Mesoporous Silica Nanoparticles with High Surface Area for Drug Delivery for Prostate Cancer https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:48220 Sat 11 Mar 2023 12:36:58 AEDT ]]> Intimately-coordinated carbon nitride-metal sulfide with high p-d conjugation for efficient battery performance https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:48452 Mon 29 Jan 2024 18:51:18 AEDT ]]> Synthesis of Nitrogen-Rich Carbon Nitride-Based Hybrids and a New Insight of Their Battery Behaviors https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:48406 Mon 29 Jan 2024 18:44:42 AEDT ]]> S-doped C3N5 derived from thiadiazole for efficient photocatalytic hydrogen evolution https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50892 Mon 29 Jan 2024 18:24:55 AEDT ]]> Highly enhanced photocatalytic hydrogen evolution activity of graphitic carbon nitride with 3D connected mesoporous structure https://ogma.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 ]]> Mesoporous Cu-SBA-15 with highly ordered porous structure and its excellent CO2 adsorption capacity https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47582 Mon 23 Jan 2023 14:21:37 AEDT ]]> Silica-Based Nanoparticles as Drug Delivery Vehicles for Prostate Cancer Treatment https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49526 Mon 22 May 2023 08:31:22 AEST ]]> Zn-Loaded SBA-1 and SBA-15 Molecular Sieves for Combined Antimicrobial and Osteogenic Activity https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50510 Mon 07 Aug 2023 13:39:52 AEST ]]> Nanostructured Materials for Hydrogen Storage and Generation and Oxygen Reduction Reaction https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47894 Mon 06 Feb 2023 13:32:00 AEDT ]]> A novel geopolymer route to porous carbon: high CO2 adsorption capacity https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:45447 Fri 28 Oct 2022 14:08:10 AEDT ]]> Halloysite nanotubes: novel and eco-friendly adsorbents for high-pressure CO2 capture https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47769 Fri 27 Jan 2023 14:08:55 AEDT ]]> Oxygen functionalized porous activated biocarbons with high surface area derived from grape marc for enhanced capture of CO2 at elevated-pressure https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40428 2 capture. The materials are synthesized using KOH activation at 800 °C and show a high content of micropores and high specific surface areas which can be easily manipulated by varying the amount of KOH. The optimized material PAB3 obtained using KOH/grape marc biochar ratio of 3 displays the highest specific surface area (2473 m2 g−1), high micropore volume (0.72 cm3 g−1) and a pore diameter of 0.74 nm. Owing to its highly developed porosity and excellent textural parameters, PAB3 exhibits a high CO2 adsorption of 6.2 mmol g−1 at 0 °C/1 bar and 26.8 mmol g−1 at 0 °C/30 bar. It is often considered challenging to synthesize a CO2 adsorbent with all-round performance for CO2 capture under diverse conditions of temperature and pressure. The optimized material PAB3 is also found to be thermally stable which when coupled with its superior CO2 capture performance presents a promising candidature in the field of carbon capture. Furthermore, the excellent features of the synthesized material suggest that these materials could be extended to several other adsorption related fields.]]> Fri 22 Jul 2022 14:30:25 AEST ]]> Calcination-free nanoarchitectonics of mesoporous conducting polymer@silica hybrids with ultra-large pores and their enhanced protein adsorption capacity https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:53207 Fri 17 Nov 2023 11:48:02 AEDT ]]> Emerging trends of carbon nitrides and their hybrids for photo-/electro-chemical energy applications https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:53216 Fri 17 Nov 2023 11:40:06 AEDT ]]> Highly enhanced photocatalytic water-splitting activity of gallium zinc oxynitride derived from flux-assisted Zn/Ga layered double hydroxides https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:35922 1–x(ZnO)x] is one of the promising visible light harvesting photocatalysts for overall water splitting. A series of (GaN)1–x(ZnO)x (0.11 ≤ x ≤ 0.33) compounds are synthesized by calcining the carbonate-type Zn/Ga-LDH precursor with and without sodium carbonate flux at 850 °C for 8–14 h under a NH₃ gas flow. The solid solutions without flux are determined to be low in crystallinity, but platelike morphology with preferred orientation could be observed. On the other hand, those with flux turn out to be better in crystallinity, and eventually exhibit significantly higher photocatalytic activity for overall water splitting under visible light irradiation than those without flux. In addition, the band gap energies can also be engineered from 2.57 to 2.72 eV by changing a synthetic parameter such as nitridation time. It is, therefore, suggested that the present new approach can offer new opportunities for designing the next generation of photocatalytic systems.]]> Fri 17 Jan 2020 09:43:08 AEDT ]]> Carbon nitride based nanoarchitectonics for nature-inspired photocatalytic CO2 reduction https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:54657 Fri 08 Mar 2024 10:49:18 AEDT ]]>