A comparative study of Neutral Red decoloration by photo-Fenton and photocatalytic processes

Alnuaimi, Maitha M.; Rauf, M.A.; Ashraf, S. Salman

doi:10.1016/j.dyepig.2006.08.051

Cited by 31 publications

(6 citation statements)

References 15 publications

(11 reference statements)

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“…34,35 The comparison of the photocatalysis and degradation efficiency with previously studies is listed in Table S1 (ESIw). 34,35 The comparison of the photocatalysis and degradation efficiency with previously studies is listed in Table S1 (ESIw).…”

Section: Photocatalytic Degradation Studiesmentioning

confidence: 99%

“…NR, a kind of azine dye, was used as a model contaminant to test the photocatalytic behavior of the as-prepared samples. 34,35 The comparison of the photocatalysis and degradation efficiency with previously studies is listed in Table S1 (ESIw). Photocatalytic experiments were performed under illumination using two commercially available 15 W Philips F15T8 black-light fluorescent bulbs (model 392233) that have spectral energy distribution centered at 254 nm.…”

Section: Photocatalytic Degradation Studiesmentioning

confidence: 99%

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One-step synthesis of monodisperse polydopamine-coated silver core–shell nanostructures for enhanced photocatalysis

et al. 2012

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Nanosized silver (Ag) and polydopamine (PDA) composite was prepared via one-step polymerization of dopamine, using Ag + ion as an oxidant. The oxidization of dopamine and the reduction of Ag + ion occurred simultaneously in one-step, which resulted in a well-defined core-shell structure of PDA coating around the Ag nanoparticles (AgNPs). Its morphology, structure, and composition were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray power diffraction (XRD), UV-vis, Fourier transform infrared (FT-IR) spectroscopy, cyclic voltammograms (CVs) and electrochemical impedance spectroscopy (EIS), respectively. The composite showed good performance toward the photo-catalytic degradation of neutral red under UV irradiation. The possible mechanism regarding the plasmon-induced photocatalysis was discussed in some detail, where the main active species of O 2 À on the surface of the AgNPs were involved in this photoreaction system. The PDA shells greatly improve the photocatalysis due to the existence of the p-p* electron transition under UV light.

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Section: Photocatalytic Degradation Studiesmentioning

confidence: 99%

Section: Photocatalytic Degradation Studiesmentioning

confidence: 99%

One-step synthesis of monodisperse polydopamine-coated silver core–shell nanostructures for enhanced photocatalysis

et al. 2012

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“…These organic pollutants can include petroleum products, textile dyes, pesticides, pharmaceuticals, and so forth and are either discharged in industrial waste or in domestic waste. There are various approaches that have been developed to degrade these organic pollutants, including adsorption and advanced oxidation processes (AOPs) . My laboratory and others have previously published relatively simple chemistry experiments that can be incorporated in undergraduate chemistry curricula to raise environmental awareness in chemistry students, and to show how chemistry can be used to solve practical, real‐life problems of environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

Raising environmental awareness through applied biochemistry laboratory experiments

Ashraf

2013

Biochem Molecular Bio Educ

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Our environment is under constant pressure and threat from various sources of pollution. Science students, in particular chemistry students, must not only be made aware of these issues, but also be taught that chemistry (and science) can provide solutions to such real-life issues. To this end, a newly developed biochemistry laboratory experiment is described that guides students to learn about the applicability of peroxidase enzymes to degrade organic dyes (as model pollutants) in simulated waste water. In addition to showing how enzymes can potentially be used for waste water remediation, various factors than can affect enzyme-based reactions such as pH, temperature, concentration of substrates/enzymes, and denaturants can also be tested. This "applied biotechnology" experiment was successfully implemented in an undergraduate biochemistry laboratory course to enhance students' learning of environmental issues as well important biochemistry concepts. Student survey confirmed that this laboratory experiment was successful in achieving the objectives of raising environmental awareness in students and illustrating the usefulness of chemistry in solving real-life problems. This experiment can be easily adopted in an introductory biochemistry laboratory course and taught as an inquiryguided exercise.

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“…ciency of Advanced Oxidation Process in the decolourisation/ degradation of azo dye organic compounds, as reported by several authors. 1,10,29 …”

mentioning

confidence: 99%

Comparative efficiencies of the decolourisation of Methylene Blue using Fenton’s and photo-Fenton’s reactions

Melgoza

Hernández-Ramírez

Peralta‐Hernández

2009

Photochem Photobiol Sci

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The decolourisation and mineralization of Methylene Blue azo dye (MB) under Fenton's and photo-Fenton's conditions have been studied. Some parameters, such as initial concentrations of iron (Fe(2+)) and fixed hydrogen peroxide (H(2)O(2)), were evaluated to find the optimal conditions for the efficient degradation of azo dye. The experimental assays showed better efficiency for the photo-Fenton's system. Pseudo-first order degradation rate constants were obtained from batch experimental set up. It is suggested that photo-Fenton's reactions are viable processes for treatment of azo dye MB, according to the high levels of colour (UV(665)) and total organic carbon (TOC) removal.

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A comparative study of Neutral Red decoloration by photo-Fenton and photocatalytic processes

Cited by 31 publications

References 15 publications

One-step synthesis of monodisperse polydopamine-coated silver core–shell nanostructures for enhanced photocatalysis

One-step synthesis of monodisperse polydopamine-coated silver core–shell nanostructures for enhanced photocatalysis

Raising environmental awareness through applied biochemistry laboratory experiments

Comparative efficiencies of the decolourisation of Methylene Blue using Fenton’s and photo-Fenton’s reactions

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