Photocatalytic decomposition of Trypan Blue over nanocomposite thin films

Elfeky, Souad A.; Al-Sherbini, Al-Sayed

doi:10.1134/s0023158411030037

Cited by 27 publications

(16 citation statements)

References 37 publications

(35 reference statements)

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“…Although there are fewer reports on the inclusion of photocatalysts for environmental remediation through advanced oxidation processes (AOPs), researchers have been long studying the inclusion of photocatalyst for membrane performance and properties enhancement and some conclusions can be adapted for the photocatalytic property. Among them, the photocatalyst mass was the most studied variable.…”

Section: Introductionmentioning

confidence: 99%

Solution mixing preparation of PVDF/ZnO polymeric composite films engineered for heterogeneous photocatalysis

Zanrosso

Piazza

Lansarin

2019

J of Applied Polymer Sci

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Despite the efforts of the scientific community, carrying out photocatalyst immobilization so that industrial application of photocatalysis becomes economically feasible is still a challenge to be overcome. In this work, polyvinylidene fluoride (PVDF)/ZnO composites were prepared by solution mixing based on solid knowledge of membrane technology and with the help of a powerful experimental design for systematic evaluation of the interaction among variables. A strategy for variable screening was used, followed by a complete evaluation at two levels, leading to predictive models. As a result, photocatalyst amount, pore agent concentration, and wet thickness were the most significant in the target molecule discoloration. With this, it was possible to obtain a 40 and 186% enhancement in photocatalytic efficiency compared to previous results and simple photolysis, respectively. Finally, the samples were characterized by FTIR‐ATR, XRD, and SEM and chemical, crystalline and morphological differences were observed both with nanoparticle and pore agent incorporation. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48417.

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Section: Introductionmentioning

confidence: 99%

Solution mixing preparation of PVDF/ZnO polymeric composite films engineered for heterogeneous photocatalysis

Zanrosso

Piazza

Lansarin

2019

J of Applied Polymer Sci

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“…TiO 2 is used in solar photocatalysis because it generates the reactive hydroxyl radical OH • on its surface [16,17]. TiO 2 has been used for photocatalytic disinfection in water treatment [18][19][20][21] and has also proved effective against organic contaminants [22][23][24]. In recent years, there has been interest in using compound parabolic concentrators (CPC) with TiO 2 because of its efficiency of collection of both diffuse and direct sunlight [25], and solar photocatalytic disinfection by the CPC method has been reported to achieve inactivation of bacteria [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Disinfection of water containing Escherichia coli by use of a compound parabolic concentrator: effect of global solar radiation and reactor surface treatment

et al. 2014

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Effects of photocatalytic and solar disinfection on Escherichia coli K12 (TISTR 780) are examined. Experiments were conducted with titanium dioxide (TiO 2 ) as catalyst, coated on plates by thermal spraying, with global solar illumination. Inactivation of E. coli as a function of time was conducted to find the rate of inactivation of the bacteria. The results revealed that the solar disinfection in the absence of the catalyst plates did not significantly affect the rate of inactivation of the bacteria when increasing the reactor surface area of solar illumination. Black reactor surfaces were slightly more affected when increasing the area of the reactor surface. However, the catalyst reactor surface had the greatest effect on inactivation of the bacteria when the reactor surface area was increased. Water temperature less than 45°C did not affect the decrease in the rate of inactivation of the bacteria for either solar or photocatalytic disinfection.

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“…Due to the outstanding of several advantages of polymer substrates, such as, flexibility in nature, mechanical and chemical stabilities, high durability, low cost and availability [29]; hence, it has been used as a support for TiO 2 photocatalyst. Recently, various types of polymeric materials used as the polymer-supported TiO 2 have shown promising performance for the photocatalysis, for example, polyaniline (PANI) [18], polyethylene terephthalate (PET) [9], silicone [28], polymethyl methacrylate (PMMA) [7] and high-density polyethylene (HDPE) [14]. Though, the methods or techniques to prepare the polymer-supported TiO 2 photocatalyst, such as, sol-gel and spin coating [16], dip and spin coating [3,4,36] and plasma layer deposition [17], are practically difficult and still have some disadvantages.…”

Section: Introductionmentioning

confidence: 99%

High photocatalytic performance of 3D porous-structured TiO2@natural rubber hybrid sheet on the removal of indigo carmine dye in water

2019

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Due to the high efficiency of photocatalytic process for the environmental treatments, titanium dioxide (TiO 2 ) is a popular used as photocatalyst material. However, the practical uses of TiO 2 in powder form have some drawbacks as well as the difficult reusability. In this work, 3D porous-structured TiO 2 @natural rubber (TNR) hybrid sheets with high photocatalytic performance were presented. TNR hybrid sheets prepared by a facile and low-cost method, which is based on the mixing of natural rubber (NR) latex (60% high ammonia) and ammoniacal TiO 2 (P25) suspension, followed by vacuum filtration through a sintered glass template to make a 3D porous network structure on the surface of the sheets. The obtained TNR sheet samples were characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectrometer (EDX), X-ray diffractometer (XRD) and reflection Fourier transformed infrared spectroscopy (FT-IR) techniques. The results showed that the surface morphologies of TNR hybrid sheets appeared as porous-structured which had high roughness and with various tiny pores on the surface. The photocatalytic properties of the prepared TNR hybrid sheets were tested using indigo carmine (IC) dye under UV light irradiation. It was found that the highest photodegradation efficiency was achieved with the TNR_5 wt% hybrid sheet sample. Compared with the sheets reported in previous works, the TNR sheet shows higher efficiencies than those sheets due to its higher amount of TiO 2 particles at the surface, more porous structure with high rough surface, and abundance of tiny pores on the TNR sheet surface. Moreover, the recyclability and stability of TNR sheet indicated that upon using 10 cycles (remains 98% efficiency), in which the stability of the sheet surface well-confirmed by SEM and XRD techniques, as well. From above the study, this 3D porous-structured TNR hybrid sheet could be a new alternative strategy for the water or wastewater treatment in industry concerning with the easy use, recovery, reusability and stability of the photocatalysts.

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Photocatalytic decomposition of Trypan Blue over nanocomposite thin films

Cited by 27 publications

References 37 publications

Solution mixing preparation of PVDF/ZnO polymeric composite films engineered for heterogeneous photocatalysis

Solution mixing preparation of PVDF/ZnO polymeric composite films engineered for heterogeneous photocatalysis

Disinfection of water containing Escherichia coli by use of a compound parabolic concentrator: effect of global solar radiation and reactor surface treatment

High photocatalytic performance of 3D porous-structured TiO2@natural rubber hybrid sheet on the removal of indigo carmine dye in water

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