Photocatalytic and biological activities of undoped and doped TiO2 prepared by Green method for water treatment

Nemr, Ahmed El; Helmy, Elsayed T.; Gomaa, Esam A.; El-Dafrawy, Shady; Mouśa, M. A.

doi:10.1016/j.jece.2019.103385

Cited by 49 publications

(13 citation statements)

References 32 publications

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“…Titanium dioxide (TiO 2 ) is a widely used material in textile industries for multiple applications. − TiO 2 has been considered as a durable photocatalyst and multifunctional material due to its use in diversified applications ranging from paints to sunscreens, hydrogen storage to dye-sensitized solar cells, and water purification to self-cleaning applications . In recent years, researchers have reported the deposition of nano TiO 2 onto different textile substrates for photocatalytic, photovoltaic, and other functional applications. − The use of ultrasonic energy (sonication) for synthesis and deposition of nanomaterials onto textile substrates has been considered as one of the most economical, facile, and eco-friendly approaches. Sonication is based on the principle of acoustic cavitation.…”

Section: Introductionmentioning

confidence: 99%

Effect of Sonication and Nano TiO₂ on Thermophysiological Comfort Properties of Woven Fabrics

Noman

Petrů

2020

ACS Omega

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The main aim of the present study was to investigate the effects of ultrasonic irradiation on thermophysiological comfort properties of TiO2-coated fabrics. The results were evaluated on the basis of heat and mass transfer as well as air permeability performances. Alambeta, a permetester, an air permeability tester, and a moisture management tester were used for thermal evaluation and air and moisture transportation, respectively. Hundred percent pure cotton and polyester woven fabrics were used for this study. Moreover, the study explains the effect of sonication on surface roughness of textile woven fabrics. TiO2 nanoparticles were deposited onto selected fabrics by sonication. Surface topography, changes regarding surface roughness, and the presence of nano TiO2 were evaluated by scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis, X-ray diffractometry (XRD), and inductively coupled plasma atomic emission spectroscopy (ICP-AES). Furthermore, standard test methods were carried out to evaluate physical and overall thermophysiological comfort properties, i.e., thermal conductivity, thermal absorptivity, relative water vapor permeability, absolute evaporative resistance, air permeability, and overall moisture management capacity of TiO2-treated and untreated samples.

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Section: Introductionmentioning

confidence: 99%

Effect of Sonication and Nano TiO₂ on Thermophysiological Comfort Properties of Woven Fabrics

Noman

Petrů

2020

ACS Omega

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“…There are numerous methods of dye-house effluent treatment like coagulation/flocculation 25 , oxidation with chemical 26 , biological treatment 27 , advanced oxidations [28][29][30][31] , electrochemical treatment 32 , photo-degradation [33][34][35][36] and adsorption treatment 6,8,20,37,38 . One of these methods with the highest preference is the adsorption method for dye removal using activated carbon 39 .…”

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confidence: 99%

Isotherm and kinetic studies of acid yellow 11 dye adsorption from wastewater using Pisum Sativum peels microporous activated carbon

El‐Nemr

Yılmaz

Ragab

et al. 2023

Sci Rep

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In this study, Pea Peels-Activated Carbon (PPAC), a novel biochar, was created from leftover pea peels (Pisum sativum) by wet impregnation with ZnCl2 and subsequent heating to 600, 700, and 800 °C in a CO2 atmosphere. Investigated how the newly acquired biochar affected the capacity to extract the AY11 dye from the aqueous solution. Through the use of FTIR, XRD, SEM, BJH, BET, DSC, EDX, and TGA studies, the prepared PPAC was identified. It was found that a pH of 2 is optimum for the AY11 dye elimination. The highest removal percentage of AY11 dye was 99.10% using a beginning AY11 dye concentration of 100 mg/L and a 1.0 g/L dose of PPAC. The highest adsorption capacity (Qm) of the PPAC was 515.46 mg/g. Freundlich (FIM), Halsey (HIM), Langmuir (LIM), Tempkin (TIM), and Gineralize (GIM) isotherm models were useful in examining the adsorption results. A variety of error functions, including the average percent errors (APE), root mean square errors (RMS), Marquardt's percent standard deviation (MPSD), hybrid error function (HYBRID), Chi-square error (X2) and a sum of absolute errors (EABS) equations, were also applied to test the isotherm models data. The PPAC experimental data were best suited by the HIM and FIM isotherm models. Elovich (EM), Pseudo-first-order (PFOM), Intraparticle diffusion (IPDM), Pseudo-second-order (PSOM), and Film diffusion (FDM) models were applied to study the kinetic adsorption results. The PSOM had a strong correlation coefficient (R2 > 0.99), and it was principally responsible for controlling the adsorption rate. Anions are typically absorbed during the adsorption mechanism of AY11 dye by PPAC owing to attractive electrostatic forces created with an increase in positively charged areas at acidic pH levels. The regenerated PPAC was used in six successive adsorption/desorption cycles. This study's outcomes show that PPAC successfully removes the AY11 dye from the aqueous solution; as a result, PPAC can be used repeatedly without experiencing considerable loss in effectiveness.

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“…The applications of TiO 2 varies from sunscreens to paints and waste water treatment to self-cleaning performance 16 . Many researchers have reported successful coating of TiO 2 on textiles for photocatalytic applications [17][18][19][20][21][22][23] . Sonication (utilization of ultrasonic energy) has shown its potential as a facile, economical and eco-friendly method for the fabrication of nanostructures and their deposition on textiles 24 .…”

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confidence: 99%

Thermophysiological comfort of sonochemically synthesized nano TiO2 coated woven fabrics

Noman

Petrů

Amor

et al. 2020

Sci Rep

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This work investigates thermophysiological comfort properties of sonochemically synthesized nano TiO2 coated cotton and polyester woven fabrics. The obtained results were analysed on heat and mass transfer basis. Moisture management tester and Alambeta were utilised for moisture transportation and thermal evaluation. This study precisely investigates the effects of sonication on surface roughness of nano TiO2 coated and uncoated samples. Ultrasonic acoustic method was applied to imbibe nano TiO2 on fabric samples. Surface topography, morphology and the existence of nano TiO2 on investigated samples were analysed by scanning electron microscopy and inductively coupled plasma atomic emission spectroscopy. In addition, standard test methods were applied to estimate physical and thermophysiological comfort properties i.e. thermal resistance, thermal diffusivity, heat flow, wetting time and accumulative one-way transport index of uncoated and nano TiO2 coated samples.

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Photocatalytic and biological activities of undoped and doped TiO2 prepared by Green method for water treatment

Cited by 49 publications

References 32 publications

Effect of Sonication and Nano TiO₂ on Thermophysiological Comfort Properties of Woven Fabrics

Effect of Sonication and Nano TiO₂ on Thermophysiological Comfort Properties of Woven Fabrics

Isotherm and kinetic studies of acid yellow 11 dye adsorption from wastewater using Pisum Sativum peels microporous activated carbon

Thermophysiological comfort of sonochemically synthesized nano TiO2 coated woven fabrics

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Photocatalytic and biological activities of undoped and doped TiO2 prepared by Green method for water treatment

Cited by 49 publications

References 32 publications

Effect of Sonication and Nano TiO2 on Thermophysiological Comfort Properties of Woven Fabrics

Effect of Sonication and Nano TiO2 on Thermophysiological Comfort Properties of Woven Fabrics

Isotherm and kinetic studies of acid yellow 11 dye adsorption from wastewater using Pisum Sativum peels microporous activated carbon

Thermophysiological comfort of sonochemically synthesized nano TiO2 coated woven fabrics

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Product

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Effect of Sonication and Nano TiO₂ on Thermophysiological Comfort Properties of Woven Fabrics

Effect of Sonication and Nano TiO₂ on Thermophysiological Comfort Properties of Woven Fabrics