Enhanced visible light photocatalysis using TiO 2 /phthalocyanine nanocomposites for the degradation of selected industrial dyes

Priyanka, K. P.; Sankararaman, S.; Balakrishna, Keshava; Varghese, Thomas

doi:10.1016/j.jallcom.2017.05.308

Cited by 52 publications

(17 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This was in good agreement with the fact that lower the crystallite size greater will be the surface area of the metal oxide catalysts 46 . The deviation from the above fact in the case of other titania samples might be due to higher rate of agglomeration and lack of irregularities and defects on the catalyst’s surface because of calcination 47 . Moreover, the crystallite size derived from BET examination using the expression, D BET = 6000/S BET × D XRD nm, was found to be in well concurrence with the same that is assessed from the XRD pattern 48 .…”

Section: Resultsmentioning

confidence: 90%

Effect of calcination temperature on the properties and applications of bio extract mediated titania nano particles

Saikumari¹,

Dev

Dev³

2021

Sci Rep

View full text Add to dashboard Cite

In order to deal with the arising environmental issues across the globe at present nano particles with unique properties laid a benchmark in the name of nano catalysis. In this work the significance of calcination temperature on the thermal, electronic, structural and surface properties of a nano catalyst produced by sol–gel method using ultrasonic radiation against the disposal of toxic textile pollutants is studied in detail. The extract of tea leaves has been used as a bio-template during the synthesis to revise the crystallite size, surface area, optical absorption potential, and rate of agglomeration of nano sized grains by regulating their physico-chemical and surface properties. The influence of calcination in the transformation of single phased anatase titania to mixed phase anatase–rutile titania and the corresponding outcome in its photocatalytic activity employed in water treatment applications have been verified. The nano catalyst obtained is characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Transition electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), Thermo gravimetric analysis (TGA), Brunaueur Emmett Teller (BET) analysis, UV–Vis diffused reflectance spectroscopy (DRS-UV–Vis) etc. The mesoporosity of the particle was examined using Barrett Joyner Halenda (BJH) model. The enhanced photo catalytic efficiency (about 97.7%) of templated nano titania due to calcination is verified against Congo red, a textile dye under optimized conditions. The nano catalyst produced can be easily separated, recycled to support its economic feasibility.

show abstract

Section: Resultsmentioning

confidence: 90%

Effect of calcination temperature on the properties and applications of bio extract mediated titania nano particles

Saikumari¹,

Dev

Dev³

2021

Sci Rep

View full text Add to dashboard Cite

show abstract

“…In addition, recent studies have shown that the performance of these materials is greatly influenced by the TiO 2 morphology . TiO 2 has been extensively investigated in recent years for its many potential applications such as photocatalyst, in solar cells, and in gas sensor . Several approaches have been developed for the synthesis TiO 2 nanotubes such as sol‐gel methods, chemical vapor deposition, hydrothermal, and physical vapor deposition …”

Section: Introductionmentioning

confidence: 99%

Structural, Morphological, and Electrochemical Corrosion Properties of TiO₂ Formed on Ti6Al4V Alloys by Anodization

Atmani

Saoula

Abdi

et al. 2018

Crystal Research and Technology

View full text Add to dashboard Cite

In this work, TiO2 layers are synthetized on Ti6Al4V alloy substrate by electrochemical anodizing process in fluoride‐containing alkaline electrolytes and under different applied voltages (10, 20, and 30 V). The scanning electron microscopy (SEM) reveals a nearly regular and vertical alignment of TiO2 nanotubes (≈80–100 nm) for specimen treated at 20 V and an agglomerate of particles with no particular orientations for those specimens treated at 10 and 30 V. The X‐ray diffraction (XRD) indicates the formation of mixed phases of anatase and rutile. Wettability measurements exhibit hydrophilic and superhydrophilic surfaces, according to the anodization parameters. The electrochemical impedance spectroscopy (EIS), performed in a simulated body fluid (Hank's solution), reveals an increase in corrosion resistance for a bias potential of 20 V (262 kΩ) owing to the evolution in TiO2‐layer thickness, and then decreases for higher anodizing potential values due to the chemical dissolution of the obtained layer.

show abstract

“…It should be noted that the comparison has a relative meaning only, because of different testing conditions (concentration and nature of dye, catalyst amount, concentration, and the nature of dopant, experimental setup, etc.) and the type of TiO2 support [25,38,39,41,[62][63][64][65][66][67]. Nevertheless, if we look closely at the degradation of the dye pollutants, the present photocatalyst based on Fe-TiO2/HY attained very high decolorization percentages (>98%) at shorter times (60 min) and under milder conditions, avoiding the use of UV radiation or additional oxidizing reactants.…”

Section: Characterization Of the Photocatalystsmentioning

confidence: 90%

Fe-Doped TiO2 Supported on HY Zeolite for Solar Photocatalytic Treatment of Dye Pollutants

et al. 2017

View full text Add to dashboard Cite

Zeolite-supported TiO 2 and Fe-doped TiO 2 /zeolite photocatalysts were synthesized, aiming at improving the adsorption properties of the microporous support towards polluting dyes and the photocatalytic performance of TiO 2 in the treatment of the adsorbed organics. The TiO 2 /HY zeolite catalyst exhibited the best performance in the photocatalytic degradation of methylene blue, MB, over 10 wt% TiO 2 /HY under UV light at 254 nm. The addition of Fe species in the synthesis mixture led to Fe-TiO 2 /HY catalyst. The combination of adequate zeolite, good titanium dioxide dispersion, and Fe doping led to a remarkable performance in the degradation of the model dye. Over a 10 wt% Fe-doped TiO 2 /HY catalyst a total removal of MB (>98%) was achieved after 60 min under very mild conditions and simple visible light irradiation.

show abstract

Enhanced visible light photocatalysis using TiO 2 /phthalocyanine nanocomposites for the degradation of selected industrial dyes

Cited by 52 publications

References 33 publications

Effect of calcination temperature on the properties and applications of bio extract mediated titania nano particles

Effect of calcination temperature on the properties and applications of bio extract mediated titania nano particles

Structural, Morphological, and Electrochemical Corrosion Properties of TiO₂ Formed on Ti6Al4V Alloys by Anodization

Fe-Doped TiO2 Supported on HY Zeolite for Solar Photocatalytic Treatment of Dye Pollutants

Contact Info

Product

Resources

About

Enhanced visible light photocatalysis using TiO 2 /phthalocyanine nanocomposites for the degradation of selected industrial dyes

Cited by 52 publications

References 33 publications

Effect of calcination temperature on the properties and applications of bio extract mediated titania nano particles

Effect of calcination temperature on the properties and applications of bio extract mediated titania nano particles

Structural, Morphological, and Electrochemical Corrosion Properties of TiO2 Formed on Ti6Al4V Alloys by Anodization

Fe-Doped TiO2 Supported on HY Zeolite for Solar Photocatalytic Treatment of Dye Pollutants

Contact Info

Product

Resources

About

Structural, Morphological, and Electrochemical Corrosion Properties of TiO₂ Formed on Ti6Al4V Alloys by Anodization