ORCID Profile
0000-0003-1929-2878
Current Organisation
The University of Newcastle
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In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Nanomaterials | Catalytic Process Engineering | Functional Materials | Materials Engineering
Hydrogen Production from Renewable Energy | Expanding Knowledge in Engineering |
Publisher: American Chemical Society (ACS)
Date: 10-01-2006
DOI: 10.1021/JP055601X
Abstract: Highly porous layered inorganic-inorganic nanohybrids were prepared by pillaring SiO2-TiO2 nanosol particles with aluminosilicate layers. According to powder X-ray diffraction analysis, the basal spacing of SiO2-TiO2 pillared aluminosilicate (STPC) calcined at 400 degrees C was determined to be larger than 40 A. N2 adsorption-desorption isotherm measurements showed the STPC to have a large Brunauer-Emmett-Teller surface area of approximately 590 m2/g, of which approximately 70% originates from micropores with a size range of 8-16 A. The sorption behavior of various solvent vapors such as hexane, methanol, and water reveals internal pore surfaces of the STPC to be hydrophobic. A distinct blue shift of absorption edge in UV-vis spectra clearly demonstrates that the nanosized TiO2 particles are formed between silicate layers as a pillar. Fourier transform infrared and extended X-ray absorption fine structure analysis at the Ti K edge reveals that the pillared titania exists in the form of anatase-structured TiO2 nanocrystals, not in the form of covalently bonded mixed particles of TiO2-SiO2. On the basis of the present findings, we are able to conclude that the quantum-sized TiO2 and SiO2 particles are independently intercalated to form a multilayer stacking intracrystalline structure in the gallery space of aluminosilicate clay.
Publisher: American Chemical Society (ACS)
Date: 28-01-2000
DOI: 10.1021/JP9927855
Publisher: The Chemical Society of Japan
Date: 05-11-2011
DOI: 10.1246/CL.2011.1242
Publisher: Elsevier BV
Date: 09-2018
Publisher: Elsevier BV
Date: 03-2019
Publisher: IEEE
Date: 12-2010
Publisher: Royal Society of Chemistry (RSC)
Date: 2009
DOI: 10.1039/B901957J
Publisher: Wiley
Date: 27-01-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2008
DOI: 10.1039/B718871D
Publisher: Elsevier BV
Date: 2006
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4RA12880J
Abstract: TiO 2 -pillared clays with well-ordered porous structures are successfully prepared via incorporating TiO 2 nanosol particles into the clays, where empty octahedral sites are partially modified with alent metal ions such as Mg 2+ and Fe 2+ .
Publisher: Springer Science and Business Media LLC
Date: 21-06-2021
Publisher: Elsevier BV
Date: 04-2010
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0JM00341G
Publisher: American Scientific Publishers
Date: 11-2013
Abstract: A nanohybrid, consisting of layered aluminosilicate as a host material and itraconazole as a guest molecule, was successfully synthesized through the interfacial intercalation reaction across the boundary between water and water-immiscible liquid at the various pH. According to the powder X-ray diffraction pattern, the basal spacing of the intraconazole-layered aluminosilicate nanohybrid increased from 14.7 to 22.7 A depending on the pH of the aqueous suspension. The total amounts of itraconazole in the hybrids were determined to be 2.3-25.4 wt% by HPLC analysis. The in vivo pharmacokinetics study was performed in rats in order to compare the absorptions of itraconazole for the itraconazole-layered aluminosilicate nanohybrid and a commercial product, Sporanox. The pharmacokinetic data for the nanohybrid and Sporanox showed that the mean area under the plasma concentration-time curve (AUC, 2477 +/- 898 ng x hr/mL and 2630 +/- 953 ng x hr/mL, respectively) and maximum concentration (Cmax, 225.4 +/- 77.4 ng x hr/mL and 223.6 +/- 51.9 ng x hr/mL, respectively), were within the bioequivalence (BE) range. Therefore, we concluded that this drug-layered aluminosilicate nanohybrid system has a great potential for its application in formulation of poorly soluble drugs.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA06271C
Abstract: The thermal stability of PP was significantly improved after the formation of PP nanocomposites with organo-LDH, which was affected by the type of organic modifier in organo-LDH and the loading amount of organo-LDH.
Publisher: Royal Society of Chemistry (RSC)
Date: 2001
DOI: 10.1039/B006059N
Publisher: Elsevier BV
Date: 03-2010
Publisher: Elsevier BV
Date: 10-2013
Publisher: Elsevier BV
Date: 03-2016
Publisher: American Chemical Society (ACS)
Date: 20-04-2007
DOI: 10.1021/CM070259H
Publisher: American Chemical Society (ACS)
Date: 07-01-2006
DOI: 10.1021/JP0543633
Abstract: We have synthesized heterostructured zinc oxide-aluminosilicate nanohybrids through a hydrothermal reaction between the colloidal suspension of exfoliated montmorillonite nanosheets and the sol solution of zinc acetate. According to X-ray diffraction, N2 adsorption-desorption isotherm, and field emission-scanning electron microscopic analyses, it was found that the intercalation of zinc oxide nanoparticles expands the basal spacing of the host montmorillonite clay, and the crystallites of the nanohybrids are assembled to form a house-of-cards structure. From UV-vis spectroscopic investigation, it becomes certain that calcined nanohybrid contains two kinds of the zinc oxide species in the interlayer space of host lattice and in mesopores formed by the house-of-cards type stacking of the crystallites. Zn K-edge X-ray absorption near-edge structure/extended X-ray absorption fine structure analyses clearly demonstrate that guest species in the nanohybrids exist as nanocrystalline zinc oxides with wurzite-type structure.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9RA09698A
Abstract: We report the synthesis of microporous carbon through a geopolymer route starting from natural clay kaolinite.
Publisher: Korean Ceramic Society
Date: 31-07-2016
Publisher: Wiley
Date: 17-06-2015
Abstract: Artesunic acid (ASH), an antimalarial drug, has low oral bioavailability due to its low aqueous solubility. To overcome this problem, artesunate (AS) was intercalated into zinc basic salt (ZBS) via co-precipitation. AS was immobilized with a tilted double layer arrangement, which was also confirmed by XRD and 1-D electron density mapping. In order to decrease the release rate of AS under gastrointestinal conditions and to simultaneously increase the release rate of AS under intestinal conditions, ZBS-AS was coated with EUDRAGIT L100 (ZBS-AS-L100). Finally, we performed an in-vivo pharmacokinetic study to compare the oral bioavailability of AS of ZBS-AS-L100 with that of ASH. Surprisingly, it was found that the former is 5.5 times greater than the latter due to an enhanced solubility of AS thanks to the ternary hybridization with ZBS and EUDRAGIT L100. Therefore, the present ZBS-AS-L100 system has a great potential as a novel antimalarial drug formulation with pH selectivity and enhanced bioavailability.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C7DT03466K
Abstract: Highly efficient visible-light-active hybrid photocatalysts with enhanced electronic coupling are synthesized via the intercalative hybridization of Zn–Cr-LDH nanocrystals with mesoporous g-C 3 N 4 .
Publisher: Elsevier BV
Date: 09-2016
Publisher: Elsevier BV
Date: 03-2018
Publisher: Elsevier BV
Date: 08-2015
Publisher: American Scientific Publishers
Date: 11-2013
Abstract: Recently, graphitic carbon nitride (g-C3N4) materials have received a great attention from many researchers due to their various roles as a visible light harvesting photocatalyst, metal-free catalyst, reactive template, nitrogen source of nitridation reaction, etc. g-C3N4 could be prepared by temperature-induced polymerization of cyanamide or melamine. In this study, we report a preparation of mesoporous graphitic carbon nitrides with tailored porous texture including pore size, and specific surface area from cyanamide and colloidal silica nanoparticles (Ludox). At first, cyanamide-silica nanocomposites were prepared by mixing colloidal silica with different size in the range of 7-22 nm and cyanamide, followed by evaporating the solvent in the resulting mixture. Mesoporous g-C3N4 s les were prepared by calcining cyanamide-silica nanocomposite at 550 degrees C for 4 hrs and removing the silica nanoparticles by using ammonium hydrogen fluoride. The formation of g-C3N4 was confirmed by the sharp (002) peak (d = 3.25 A) of graphitic interlayer stacking, and the broad (100) peak (d = 6.86 A) of in-plane repeating unit in the X-ray diffraction patterns. According to N2 adsorption-desorption analysis, the pore size of mesoporous carbon nitrides was similar to the size of colloidal silica used as hard template (7-22 nm). The specific surface area of mesoporous g-C3N4 could be tailored in the range of 189 m2/g-288 m2/g.
Publisher: Elsevier BV
Date: 04-2006
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9CC00232D
Abstract: We report the synthesis of porous carbon through a novel geopolymer route, starting from natural clay kaolin.
Publisher: Springer Science and Business Media LLC
Date: 06-03-2018
Publisher: Elsevier BV
Date: 02-2013
DOI: 10.1016/J.IJPHARM.2012.12.043
Abstract: For transdermal drug delivery, we prepared a drug-inorganic nanohybrid (FB-LDH) by intercalating a transdermal model drug, flurbiprofen (FB), into the layered double hydroxides (LDHs) via coprecipitation reaction. The X-ray diffraction patterns and FT-IR spectra of the FB-LDH indicated that the FB molecules were successfully intercalated via electrostatic interaction within the LDH lattices. The in vitro drug release revealed that the Eudragit(®) S-100 in release media could facilitate the drug out-diffusion by effectively replacing the intercalated drug and also enlarging the lattice spacing of the FB-LDH. In this work, a hydrophobic gel suspension of the FB-LDH was suggested as a transdermal controlled delivery formulation, where the suspensions were mixed with varying amounts of Eudragit(®) S-100 aqueous solution. The Frantz diffusion cell experiments using mouse full-skins showed that a lag time and steady-state flux of the drug could be controlled from 12.8h and 3.28μgcm(-2)h(-1) to less than 1h and 14.57μgcm(-2)h(-1), respectively, by increasing the mass fraction of Eudragit(®) S-100 solution in gel suspensions from 0% to 20% (w/w), respectively. Therefore, we conclude gel formulation of the FB-LDH have a potential for transdermal controlled drug delivery.
Start Date: 12-2022
End Date: 12-2025
Amount: $340,000.00
Funder: Australian Research Council
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