Synthesis of Nanostructured Copper-doped Titania and Its Properties

Zuas, Oman; Budiman, Harry

doi:10.1007/bf03353728

Cited by 34 publications

(18 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…9. Absorption edge has shifted to higher wavelength as dopant concentration increases, which agrees well with literature [53]. TiO 2 film absorption edge is observed to be larger than that of the Cu/TiO 2 films.…”

Section: Optical Property Studiessupporting

confidence: 90%

Cu/TiO2 thin films prepared by reactive RF magnetron sputtering

et al. 2015

View full text Add to dashboard Cite

Cu/TiO 2 thin films were deposited on glass substrates by reactive RF magnetron sputtering technique. Crystalline structure, surface morphology and electronic structure were studied using X-ray diffraction (XRD), field emission scanning electron microscopy, atomic force microscopy and X-ray photoelectron spectroscopy (XPS). Transmittance and absorptance of these films were characterized by UV-Vis spectroscopy. XRD patterns demonstrate that TiO 2 films deposited on glass substrate at 300°C are observed to be in pure anatase phase, whereas Cu/TiO 2 films are amorphous in nature at 300°C substrate temperature. The crystallinity of Cu/TiO 2 thin films decreases with increasing the dopant concentrations of Cu in TiO 2 films. XPS studies show that Cu is in ?2 oxidation state in all films. The optical band gap of Cu/TiO 2 films decreases from *3.3 to *2.0 eV with the increase in the copper concentration. Further, antimicrobial studies of Cu/TiO 2 films with *3.9 at.% Cu exhibit high transmittance and best antimicrobial activity against E. coli and S. aureus compared to other doped films.

show abstract

Section: Optical Property Studiessupporting

confidence: 90%

Cu/TiO2 thin films prepared by reactive RF magnetron sputtering

et al. 2015

View full text Add to dashboard Cite

show abstract

“…There are few studies about the NPs' size effect on suspension properties, particularly IEP. The size of particles may not only affect the IEP of the suspension but also the surface reactivity, adsorption affinity and photocatalytic activity of NPs [45][46][48][49]. As NPs size decreases, the percentage of surface atom/molecule increases extensively.…”

Section: Zeta Potential Analysismentioning

confidence: 99%

Fabrication, Characterization and Thermophysical Property Evaluation of SiC Nanofluids for Heat Transfer Applications

et al. 2014

View full text Add to dashboard Cite

Nanofluids (NFs) are nanotechnology-based colloidal suspensions fabricated by suspending nanoparticles (NPs) in a base liquid. These fluids have shown potential to improve the heat transfer properties of conventional heat transfer fluids. In this study we report in detail on fabrication, characterization and thermo-physical property evaluation of SiC NFs, prepared using SiC NPs with different crystal structures, for heat transfer applications. For this purpose, a series of SiC NFs containing SiC NPs with different crystal structure (α-SiC and β-SiC) were fabricated in a water (W)/ethylene glycol (EG) mixture (50/50 wt% ratio). Physicochemical properties of NPs/NFs were characterized by using various techniques, such as powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fouriertransform infrared spectroscopy (FTIR), dynamic light scattering (DLS) and Zeta potential analysis. Thermo-physical properties including thermal conductivity (TC) and viscosity for NFs containing SiC particles (α-and β-phase) weremeasured. The results show among all suspensions NFs fabricated with α-SiC particles have more favorable thermo-physical properties compared to the NFs fabricated with β-SiC.The observed difference is attributed to combination of several factors, including crystal structure (β-vs. α-), sample purity, and residual chemicals exhibited on SiCNFs. A TC enhancement of ∼20% while 14% increased viscosity were obtained for NFs containing 9 wt% of particular type of α-SiC NPs indicating promising capability of this kind of NFs for further heat transfer characteristics investigation.

show abstract

“…The phase purity and crystalline structure of the powders as well as membranes were determined by X‐ray diffraction pattern (Philips 1710 diffractometer using CuK α radiation, Eindhoven, the Netherlands [α = 1.541 Å]) in the 2θ range of 0–60°C at ambient temperature. The crystallite size was calculated from the X‐ray diffraction peaks using Scherrer formula .

D_{normalXRD} = \frac{0.9 λ}{β cos θ},

where D XRD is the crystallite size in nm, λ is the radiation wave length, and β is width at half peak intensity.…”

Section: Methodsmentioning

confidence: 99%

Membrane Synthesized from Microemulsion‐Derived Ilmenite Nano Powders Used for Removal of Red Dye from Textile Industry

Sen

Das

Roy

et al. 2016

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

In this work, the high-quality ilmenite (FeTiO 3 ) membranes were grown on the clay-Al 2 O 3 support tube from microemulsion-derived FeTiO 3 powders by dip-coating method. FeTiO 3 powders were synthesized by reverse microemulsion method, using cyclohexane, Tween-80, Brij 30, Triton X-100, and n-butanol at different composition. The membranes as well as powders were finally characterized by removal of red dye from a simulated wastewater of textile industry in same conditions. The membrane separation process demonstrates the removal of dye coupled with permeation of water simultaneously, and the overall process may have great potential for wide industrial application.

show abstract

Synthesis of Nanostructured Copper-doped Titania and Its Properties

Cited by 34 publications

References 37 publications

Cu/TiO2 thin films prepared by reactive RF magnetron sputtering

Cu/TiO2 thin films prepared by reactive RF magnetron sputtering

Fabrication, Characterization and Thermophysical Property Evaluation of SiC Nanofluids for Heat Transfer Applications

Membrane Synthesized from Microemulsion‐Derived Ilmenite Nano Powders Used for Removal of Red Dye from Textile Industry

Contact Info

Product

Resources

About