A5004710645- Gas Sensing Nanomaterials and Sensors
- Analytical Chemistry and Sensors
- Transition Metal Oxide Nanomaterials
- Ga2O3 and related materials
- ZnO doping and properties
- Electrochemical sensors and biosensors
- Advanced Photocatalysis Techniques
- Semiconductor materials and devices
- TiO2 Photocatalysis and Solar Cells
- Copper-based nanomaterials and applications
- Calcium Carbonate Crystallization and Inhibition
- Electronic and Structural Properties of Oxides
- Anodic Oxide Films and Nanostructures
- Bone Tissue Engineering Materials
- Graphene research and applications
- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- Advanced Chemical Sensor Technologies
- Advanced Nanomaterials in Catalysis
- Water Quality Monitoring and Analysis
- Advanced Fiber Optic Sensors
- Advanced Memory and Neural Computing
- Electrochemical Analysis and Applications
- Spectroscopy and Chemometric Analyses
- Nanowire Synthesis and Applications
Universiti Teknologi MARA
2017-2024
Politeknik Negeri Ujung Pandang
2022
State University of Makassar
2022
RMIT University
2012-2017
Sciencetech (Canada)
2017
RMIT Europe
2015
MIT University
2014
MIMOS (Malaysia)
2008-2011
Microsystems (United Kingdom)
2009
Universiti Sains Malaysia
2004
The oxides of copper (Cu<sub>x</sub>O) are fascinating materials due to their remarkable optical, electrical, thermal and magnetic properties.
As one of the transition metal oxides, niobium pentoxide (Nb2O5) offers a broad variety properties that make it potentially useful and highly applicable material in many different areas. In comparison to other Nb2O5 has received relatively little attention, which presents significant opportunity for future investigations aimed at fundamentally understanding this finding new interesting applications it. article, general overview is presented focuses on its fundamental properties, synthesis...
We demonstrate that a three dimensional (3D) crystalline tungsten trioxide (WO(3)) nanoporous network, directly grown on transparent conductive oxide (TCO) substrate, is suitable working electrode material for high performance electrochromic devices. This nanostructure, with achievable thicknesses of up to 2 μm, prepared at room temperature by the electrochemical anodization RF-sputtered film deposited fluoride doped tin (FTO) glass, under low applied anodic voltages and mild chemical...
Here, we demonstrate that niobium pentoxide (Nb(2)O(5)) is an ideal candidate for increasing the efficiencies of dye-sensitized solar cells (DSSCs). The key lies in developing a Nb(2)O(5) crisscross nanoporous network, using our unique elevated temperature anodization process. For same thicknesses ∼4 μm, DSSC based on layer has significantly higher efficiency (∼4.1%) when compared to which incorporates titanium dioxide nanotubular (∼2.7%). This highest among all reported photoanodes such...
In this paper, we present H2 gas sensors based on hollow and filled, well-aligned electrospun SnO2 nanofibers, operating at a low temperature of 150 °C. nanofibers with diameters ranging from 80 to 400 nm have been successfully synthesized in which the diameter can be controlled by adjusting concentration polyacrylonitrile solution for electrospinning. The presence polymer results formation granular walls nanofibers. We discussed correlation between morphology, structure, oxygen vacancy...
Despite the predictions, true potential of Nb2O5 for electrochromic applications has yet to be fully realized. In this work, three-dimensional (3D) compact and well-ordered nanoporous films are synthesized by electrochemical anodization niobium thin films. These formed using RF sputtering then anodized in an electrolyte containing ethylene glycol, ammonium fluoride, small water content (4%) at 50 °C which resulted low embedded impurities within structure. Characterization shows that a highly...
A novel morphology of a criss-cross vein-like nanoporous network Nb2O5 produced using simple electrochemical anodization method is presented as superior electrode for safe lithium-ion batteries. Scanning electron microscopy (SEM) observations demonstrate that the synthesised made continuous and highly packed with many lateral interconnections, which provides excellent channels fast transfer both Li+ ions electrons. Even without surface coating or cation doping, porous could deliver durable...
Using ZnO seed layers, an efficient approach for enhancing the heterointerface quality of electrodeposited ZnO–Cu2O solar cells is devised. We introduce a sputtered layer followed by sequential electrodeposition and Cu2O films. The employed to control growth crystallinity augment surface area films, thereby tuning heterointerface. Additionally, also assists in forming high with no pin-holes, pH electrolyte solution. X-ray electron diffraction patterns, scanning atomic force microscopy...
Nanoporous Nb2O5 has been previously demonstrated to be a viable electrochromic material with strong intercalation characteristics. Despite showing such promising properties, its potential for optical gas sensing applications, which involves the production of ionic species as H+, yet explored. can accommodate large amount H+ ions in process that results an energy bandgap change induces response. Here, we demonstrate hydrogen (H2) capability nanoporous anodic surface-to-volume ratio prepared...
We report the influence of zinc oxide (ZnO) seed layers on performance ZnO-based memristive devices fabricated using an electrodeposition approach. The element is based a sandwich structure Ag and Pt electrodes. ZnO layer employed to tune morphology electrodeposited films in order increase grain boundary density as well construct highly ordered arrangements boundaries. Additionally, also assists optimizing concentration oxygen vacancies films. exhibit switching behaviour with symmetrical...
There is a continuous quest for developing electrochromic (EC) transition metal oxides (TMOs) with increased coloration efficiency. As emerging TMOs, Nb2O5 films, even those of ordered anodized nanochannels, have failed to produce the required EC performance practical applications. This attributed limitations presented by its relatively wide bandgap and low capacity accommodating ions. To overcome such issues, MoO3 was electrodeposited onto nanochannelled films as homogeneously conformal...
Anodized nanoporous Nb2O5 films are synthesized using two different types of electrolyte compositions onto transparent conductive glasses and their impurities induced during the anodization process assessed. These incorporated as photoanodes in dye sensitized solar cells (DSSCs). The one with no traces impurity-driven defects exhibits higher current density longer electron lifetimes, consequently, an improvement photoconversion efficiencies compared to that contains impurities.