A5032381235- Nanocluster Synthesis and Applications
- Advanced Nanomaterials in Catalysis
- Advanced Photocatalysis Techniques
- Gold and Silver Nanoparticles Synthesis and Applications
- Catalytic Processes in Materials Science
- Quantum Dots Synthesis And Properties
- Copper-based nanomaterials and applications
- Solar-Powered Water Purification Methods
- Gas Sensing Nanomaterials and Sensors
- TiO2 Photocatalysis and Solar Cells
- Advanced Battery Technologies Research
- Advanced Materials and Mechanics
- thermodynamics and calorimetric analyses
- Perovskite Materials and Applications
- Molecular Junctions and Nanostructures
- Advancements in Battery Materials
- 2D Materials and Applications
- Surface and Thin Film Phenomena
- Electronic and Structural Properties of Oxides
- Pigment Synthesis and Properties
- Conducting polymers and applications
- Nanomaterials for catalytic reactions
- Diatoms and Algae Research
- Aerogels and thermal insulation
- Advanced Battery Materials and Technologies
Flinders University
2020-2025
Al Baha University
2021-2024
Flinders Microscopy and Microanalysis
2020
The University of Adelaide
2020
Recently, the creation of new heterogeneous catalysts using unique electronic/geometric structures small metal nanoclusters (NCs) has received considerable attention. However, to achieve this, it is extremely important establish methods remove ligands from ligand-protected NCs while preventing aggregation NCs. In this study, ligand-desorption process during calcination was followed for metal-oxide-supported 2-phenylethanethiolate-protected gold (Au) 25-atom five experimental techniques. The...
Metallic lithium (Li) is the most attractive anode for Li batteries because it holds highest theoretical specific capacity (3860 mA h g–1) and lowest redox potential (−3.040 V vs SHE). However, poor interface stability of anode, which caused by high reactivity dendrite formation metallic upon cycling, leads to undesired electrochemical performance safety issues. While two-dimensional boron nitride (BN) nanosheets have been utilized as an interfacial layer, mechanism on how they stabilize...
Au9 nanoclusters (Au9 NCs) were deposited onto S-functionalized mesoporous TiO2 (SMTiO2) to produce efficient photocatalysts for Methyl Orange (MO) dye degradation with UV light. The morphology, the surface composition and size of NCs catalyst was analysed. SMTiO2 could adsorb more clusters lesser cluster agglomeration than unmodified MTiO2. This finding is attributed capability thiol groups form strong bonds clusters. To study effect on activity, MO reaction constants under UV-light...
Dye anchoring plays a vital role in determining cell efficiency and extensively influences the stability of dye-sensitized solar cells (DSSCs). The investigation characterization dye complex adsorption on TiO2 substrate are crucial for understanding sensitization process surface optimizing quantum yield DSSCs. Many dyes used DSSCs consist either carboxylic group or cyanoacrylic acid as anchors. However, with growing interest DSSCs, new different groups have been developed evaluated. present...
A novel catalyst for dye degradation is fabricated through attaching Au 9 nanoclusters (Au NCs) to N functionalized mesoporous TiO 2 (NMTiO ). The NMTiO created chitosan‐assisted soft templating resulting in an terminated surface preventing the agglomeration of NCs adsorbed and enhancing overall loading with . calcination atmosphere influenced properties its capability adsorb NCs. photocatalytic effectiveness these materials was probed methyl orange (MO) degradation. black coloured /NMTiO...
Photocatalytic H2O2 production is a green and sustainable alternative to the commercial anthraquinone process that requires large energy input causes high CO2 emission. Gold (Au) co-catalysts are often employed as catalytic active sites in photocatalytic material designs. However, little known about effect of Au particle size, particularly different size domains (cluster vs nanoparticle), on synthesis. Here we Au9 clusters Au101 nanoparticles supported sulfur-doped graphitic carbon nitride...
The photocatalytic properties of titania (TiO2) have prompted research utilising its useful ability to convert solar energy into electron-hole pairs drive novel chemistry. aim the present work is examine required for a synthetic method capable producing thin TiO2 films, with well defined, easily modifiable characteristics. Presented here synthesis nanoparticulate films generated using RF plasma homogenous depositions known elemental composition and at far lower cost than single-crystal TiO2....
Chromium hydroxide overlayer have been shown to great potential protects the phosphine-ligated Au clusters from agglomeration after removal of ligands and under conditions photocatalytic water splitting.
Controlling the morphology and structure of two-dimensional (2D) transition metal dichalcogenides has potential applications in renewable energies, electronics, electrocatalysis. Transforming readily available 2D MoS2 sheets into scrolls with active edges is interest electrocatalytic hydrogen evolution. Here, we demonstrate a facile, efficient, environmentally friendly process for scrolling 2D-MoS2 under continuous flow using vortex fluidic device (VFD). The scalable can be optimized high...
Chromium oxide (Cr2O3) can be used as a protective layer for photocatalysts to improve photocatalytic water splitting activity and is commonly photodeposited. However, it not known how the conditions of Cr2O3 formation affect potential diffusion into substrate onto which has been deposited. We have investigated stability photodeposited surface different crystal phases TiO2 with subsequent annealing at range temperatures up 600 °C. X-ray photoelectron spectroscopy synchrotron near-edge...
Abstract Recently, the creation of new heterogeneous catalysts using unique electronic/geometric structures small metal nanoclusters (NCs) has received considerable attention. However, to achieve this, it is extremely important establish methods remove ligands from ligand‐protected NCs while preventing aggregation NCs. In this study, ligand‐desorption process during calcination was followed for metal‐oxide‐supported 2‐phenylethanethiolate‐protected gold (Au) 25‐atom five experimental...
Photocatalytic H2O2 synthesis is an appealing and feasible strategy to replace the energy- intensive, tedious, waste-generating anthraquinone process. Often, pure metal oxides show low activity in photocatalytic production therefore co-catalysts are required improve photoactivity. This work investigated using monodisperse gold nanoclusters Au101(PPh3)21Cl5 supported on WO3. From HRTEM imaging, Au101 size uncalcined samples cluster regime (<2 nm) after calcination at 200 °C increases ca....
Highly photoactive and stable photocatalysts derived from monodisperse phosphine-protected Au 101 on WO 3 for sustainable H 2 O production.
Self-assembled monolayers (SAMs), such as alkanethiols (AT), are widely used functional coatings or interfaces between different materials. There is an assumption that the arrangement and alignment of hydrocarbon chains in films made from carboxyl-terminated similar to those alkanethiols. Here, structure outermost layer near-surface region SAMs formed various lengths has been analyzed. The chemical composition samples was measured using X-ray photoelectron spectroscopy (XPS) angle-resolved...
The properties of semiconductor surfaces can be modified by the deposition metal clusters consisting a few atoms. and cluster-modified depend on number atoms forming clusters. Deposition with monodisperse size distribution thus allows tailoring surface for technical applications. However, it is challenge to retain after their due tendency agglomerate. agglomeration inhibited covering cluster thin oxide overlayer. In present work, phosphine-protected Au clusters, Au9(PPh3)8(NO3)3, were...
Chromium oxide (Cr2O3) is a beneficial metal used to prevent the backward reaction in photocatalytic water splitting. The present work investigates stability, oxidation state, and bulk surface electronic structure of Cr-oxide photodeposited onto P25, BaLa4Ti4O15, Al:SrTiO3 particles as function annealing process. state layer deposited found be Cr2O3 on P25 Cr(OH)3 BaLa4Ti4O15. After at 600 °C, for (a mixture rutile anatase TiO2), diffuses into phase but remains phase. For converts upon...
Photocatalytic H2O2 synthesis is an appealing and feasible strategy to replace the energy- intensive, tedious, waste-generating anthraquinone process. Often, pure metal oxides show low activity in photocatalytic production therefore co-catalysts are required improve photoactivity. This work investigated using monodisperse gold nanoclusters Au101(PPh3)21Cl5 supported on WO3. From HRTEM imaging, Au101 size uncalcined samples cluster regime (<2 nm) after calcination at 200 °C increases ca....
Antimony powder is transformed into 2D antimonene in a vortex fluidic device (VFD) at ambient conditions, depending on the choice of solvent (optimised as 1:1 mixture isopropyl alcohol...
Radio frequency (RF) magnetron sputtering allows the fabrication of TiO2 films with high purity, reliable control film thickness, and uniform morphology. In present study, change in surface roughness upon heating two different thicknesses RF sputter-deposited was investigated. As a measure process morphology, chemically -synthesised phosphine-protected Au9 clusters covered by photodeposited CrOx layer were used as probe. Subsequent to deposition layer, samples heated 200 ℃ remove...
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Die Ligandendesorption bei der Kalzinierung von Metalloxid-gestützten 2-Phenylethanthiolat-geschützten 25-atomigen Gold-Nanoclustern wurde Yuichi Negishi und Mitarbeitern im Forschungsartikel auf S. 21510 mit fünf experimentellen Techniken untersucht. Basierend den Ergebnissen eine Methode zur Bildung einer Metalloxid-Schicht Oberfläche Au-NCs gleichzeitiger Verhinderung ihrer Aggregation etabliert ein hoch aktiver Photokatalysator für die Wasserspaltung entwickelt.