Heterogeneous photocatalytic degradation of methyl orange. The structure and adsorption spectrum of methyl orange are shown in fig. Semantic scholar extracted view of rapid sun light degradation of rhodamineb, methylene blue, methyl orange, congo red and their binary mixtures using suprastoichiometric bimolybdate by pulluru suresh et al. Degradation and mechanism of methyl orange by nanometallic. The photocatalytic performance was determined by methyl orange degradation and cyanide photooxidation under ultraviolet irradiation. Degradation of methyl orange using fenton catalytic reaction 3 please cite this article in press as. Enhanced photodegradation of methyl orange with tio2 nanoparticles using a triboelectric nanogenerator yuanjie su1,2,4, ya yang1,4, hulin zhang1, yannan xie1, zhiming wu2, yadong jiang2, naoki fukata3, yoshio bando3 and zhong lin wang1,3 1 school of materials science and engineering, georgia institute of technology, atlanta, ga 303320245, usa. The products of degradation are less toxic than the product itself. Photocatalytic degradation of methyl orange in a sparged.
Enhanced photocatalytic degradation of methyl orange. Author links open overlay panel tsutomu tasaki a tsubasa wada a. The degradation of the methyl orange mo dye was investigated using advanced oxidation process aop by exposing mo aqueous solution to uv irradiation after the addition of hydrogen peroxide h2o2. These surfactant capped cu nanostructures have been used as a heterogeneous catalyst for the comparative reductive degradation of methyl orange mo in the presence of sodium borohydride nabh 4 used as a potential reductant. In this paper, steel slag as the main raw material, modified steel slag adsorbent was prepared using steel slag and the active carbon as the starting materials. Degradation of methyl orange using fenton catalytic reaction. As a comparison, degradation of mo with wo 3, zno quasifibers, commercial zno, and 10% wo 3cmz photocatalysts is also carried out under similar conditions. The results showed that the prepared catalysts possess classical keggin structure. Photo catalytic degradation of methyl orange by using cds. Photocatalytic degradation of methyl orange and cyanide by. Mil100fe was a much better photocatalyst in the degradation of methyl orange, because this dye cannot go through the windows of the former. Synthesis of copper oxide nanoparticles by a novel method.
Rapid degradation of azo dye methyl orange using hollow. Mechanism studies on methyl orange dye degradation by perovskitetype lanio3. The confirmation of the firstorder rate kinetics was derived from the linearity of the plot. Synthesis and characterization of zinc oxide nano particles zno nps and investigation of their catalytic activity for the degradation of methyl orange. Synthesis of methyl orange supplementary material students are often enthusiastic about the synthesis of a dye, since it is a kind of product that they contact daily. Photocatalytic degradation of methyl orange using znotio. Photodegradation of methyl orange by polysaccharides.
The rate of degradation increased dramatically with growth in photocatalytic reaction time. Paper, dyeing, plastic and textile industries use color for dyeing their products and thus use a huge amount of water which results in the production of a dyecontaining wastewater with hazardous effects on the environment 1234. The composition and surface structure of the catalyst were characterized by xray diffraction xrd, field. Photocatalytic degradation of methyl orange and bromophenol blue dyes in water using solgel synthesized tio2 nanoparticles. Degradation of methyl orange using shortwavelength uv irradiation with oxygen microbubbles. Asa comparison,degradationofmowithwo 3, zno quasibers, commercial zno, and % wo 3cmz photocatalysts is also carried out under similar conditions.
Pdf mechanism studies on methyl orange dye degradation. Methyl oranges production and use as a ph indicator and as a dye for textiles may result in its release to the environment through various waste streams. The effect of initial ph of solution on the degradation of methyl orange by fenton reaction was studied in the ph range of 2. Schwertmannite was synthesized through an oxidation of feso4 by acidithiobacillus ferrooxidans lx5 cell suspension at an initial ph 2. The photocatalytic activity of catalysts were evaluated based on the degradation of methyl orange mo dye solution.
This compound is orange in basic medium and red in acidic medium. Study on the photocatalytic degradation of methyl orange in water using ag zno as catalyst by liquid chromatography electrospray ionization iontrap mass. In this work, we tested the photocatalytic activity of mgozno degradation of methyl orange and rhodamine b. Znotio 2 composites were synthesized by using the solvothermal method and ultrasonic precipitation followed by heat treatment in order to investigate their photocatalytic degradation of methyl orange mo in aqueous suspension under uv irradiation. The schwertmannite photocatalytic degradation of methyl orange mo by oxalate was investigated. Compared to pure to, tao composite has greater degradation efficiency. Influence of crystal structure of nanosized zro2 on. The experiments were carried out in 20 ml amber vials sealed with teflon lined septa after adding 10 ml of the methyl orange solution at about 25 mg l1 and a suitable amount of nzvi or. Pdf photoelectrochemical degradation of methyl orange.
They used aqueous methyl orange mo solution 450 ml with an initial concentration of 10 mg l. The pollutant degradation ability of taos photocatalyst was tested on methyl orange mo dye. Pdf oxidation by fenton reactions a proven and economically feasible process for destruction of a variety of hazardous pollutants in wastewater. Pdf the degradation mechanism of methyl orange under. Pdf enhanced photocatalytic degradation of methylene. Their photacatalytic activities were studied by photodegradation methyl orange in water under uv and simulant solar light irradiation.
Synthesis of methyl orange royal society of chemistry. Copper nanoparticles cu nps were found to be more efficient compared to copper nanorods cu nrds with the. Methyl orange mo was used as a model compound because it was possible to use uvvisible spectroscopy to monitor the degradation under different conditions such as mo concentration, ph, tio 2 concentration and solar intensity. Enhanced photodegradation of methyl orange with tio2 nanoparticles using a triboelectric nanogenerator.
The photocatalytic activity of the three zro 2 samples was determined by monitoring the degradation of the methyl orange dye. Photocatalytic degradation of methyl orange in water by. The real industrial establishment of metalorganic frameworks mofs requires significant advances in economic and chemical sustainability. Photocatalytic degradation of methyl orange by fe2o3.
A direct influence of initial ph on the degradation of mo could be observed and the best degradation efficiency was obtained at ph of 2. Highly active tio2 nanophotocatalysts for degradation of. Pdf titanium dioxide tio2 was used as a photocatalyst for the detoxification of water containing methyl orange mo, which was used as a. The factors on the degradation of methyl orange, such as the kind of catalyst, the amount of catalyst, the original concentration of dye and illumination time were investigated under metal halide lamp. This study was conducted to investigate the use of cubic lamno3 nanoperovskite as a green catalyst for the degradation of an aqueous solution of methyl orange under different conditions. Pdf degradation of methyl orange using fenton catalytic. The tem observation shows that the average diameter of fe3o4 is approximately 15 nm, while the thickness both of zno shell is ranging 20 nm 50 nm. Synthesis, characterization and methyl orange degradation. Degradation of methyl orange using fenton catalytic. Electrolyte type and concentration as well as the applied potential on the ti electrodes had significant effects on photoelectrocatalytic degradation and electrodegradation efficiencies. The factors on the degradation of methyl orange, such as the kind of catalyst, the amount of catalyst, the original concentration of dye. Photocatalytic degradation of methyl orange dye by. Furthermore, the stability of the catalyst was evaluated by measuring the degradation rate in eight successive cycles. A kinetic study on the degradation and biodegradability of.
Degradation of methyl orange by uvh2o2 advanced oxidation. Methyl orange mo was selected as a target pollutant, due to its solubility in water, which is a requirement for chemicals present in waste water from industrial emissions. Temperature effect on the photocatalytic degradation of methyl. Role of reactive oxygen species in the photocatalytic degradation of methyl orange and tetracycline by ag3po4 polyhedron modified with gc3n4. Enhanced photodegradation of methyl orange with tio2. Chemistry 148 2002 161168 photocatalytic degradation of methyl orange as a model compound siham alqaradawi, salman r. Study of photocatalytic degradation of methyl orange on. Photocatalytic degradation of organic dye methyl orange. The highest rate of photocatalytic degradation was found in tio 2 7. Optimisation of methyl orange photodegradation using tio2zeolite. For all the degradation experiments, 40 mg of the metallic degradation reagent was added to 10 ml methyl orange dye mo, c 14 h 14 n 3 so 3 solution with an initial mo concentration of 20 mgl.
Silicotungstic acid and phosphotungstic acid were prepared and characterized by fourier transform infrared spectroscopy ftir and xray diffraction xrd. M for the degradation of methyl orange was evaluated, and the data indicated that nio. Xray diffraction xrd, transmission electron microscopy tem, xray. Faculty of science, chemistry department, university of qatar, p. Hybrid energy cell for degradation of methyl orange by. The photocatalytic activity of 10% wo 3fz nanocomposite has been studied by degrading methyl orange under metal halide irradiation.
Degradation of methyl orange waste water by electrochemical oxidation method. Photodegradation of rhodamine b and methyl orange over boron. In the present work, the photocatalytic degradation of methyl orange catalyzed by the simple structural. Photodegradation of rhodamine b and methyl orange over. Degradation of methyl orange and rhodamine b by using. Methyl orange degradation over nanolamno3 as a green. Photocatalytic degradation of methyl orange dye by pristine titanium dioxide, zinc oxide, and graphene oxide nanostructures and their composites under visible light irradiation, applied nanoscience, 2017, pp. Degradation of methyl orange using shortwavelength uv. Effect of different experimental conditions such as initial ph, concentration of pds, dye, and agnps was studied on the degradation process. Research article preparation of mixed semiconductors for. A series of smdoped tio 2 nanoparticles were prepared by the solgel method and characterized with xray diffraction xrd, transmission electron microscope tem, and ultravioletvisible diffuse reflectance spectra drs.
The degradation rate increased with the increasing irradiation time. The average diameter of tio2 p25 particle as catalyst was observed about 20 nm. Photocatalytic degradation of methyl orange by ceo 2 and. However, in the treatments of methyl orange mo azo dye waste, little attention has been paid on the photocatalytic degradation with porphyrinssensitized tio2 composites as catalyst 20. The plot of lnc 0 c where c 0 is initial concentration of the methyl orange and c is the concentration at a given moment of time against irradiation time shows that the photocatalytic degradation of methyl orange is a pseudofirstorder reaction. Tio2 nanoparticles, photo catalytic degradation, methyl orange, xrd, tem, ftir. The ionic state of methyl orange makes this compound essentially nonvolatile, therefore methyl orange should exist solely in the particulate phase in the ambient atmosphere. The sample was characterized using the ftir and uv.
Photocatalytic degradation of methyl orange by ceo 2 and fedoped ceo 2 films under visible light irradiation skip to. The synthesis of methyl orange has been performed since the 1960s by students from different courses and it is an excellent example to illustrate a diazo coupling, allowing them to. The effects of the ph, temperature, h 2 o 2 dosage, catalyst dosage and initial dye concentration on the degradation of methyl orange were researched in detail. Hydrophilic fe3o4 nanoparticles prepared by ferrocene as. A blank experiment was carried out to confirm that the photodegradation reaction did not proceed without the presence of either catalyst or the uv radiation. Photocatalytic degradation of methyl orange as a model.
We report herein the oxidation of methyl orange using a fenton reaction at normal laboratory temperature and at atmospheric pressure. A highly efficient degradation mechanism of methyl orange. M exhibited an excellent optical response and photocatalytic activity in the visible region. However, the excessive incorporation of cuo did not improve any ability of tio 2 to degrade meo and cyanide. However, as the percentage of ao increases the degradation efficiency decreases. Hybrid energy cell for degradation of methyl orange by selfpowered electrocatalytic oxidation ya yang. Study on the photocatalytic degradation of methyl orange in water. Photoelectrocatalytic degradation of methyl orange using. Preparation of mixed semiconductors for methyl orange. Abstract in this research work, the degradation of methyl orange mo in an aqueous solution by nanometallic particles nmps under a fentonlike process.
Study on the photocatalytic degradation of methyl orange. Temperature effect on the photocatalytic degradation of methyl orange under uvvis light irradiation. Study of photocatalytic degradation of methyl orange on different morphologies of zno catalysts. Synthesis and characterization of zinc oxide nano particles zno nps and investigation of their catalytic activity for the degradation of methyl orange in aqueous medium has been reported in this work. The degradation mechanism of methyl orange under photocatalysis of tio2 article pdf available in physical chemistry chemical physics march 2012 with 1,378 reads how we measure reads. The influences of doping substance, the particle size, calcining temperature and doping ratio on the decoloration rate of methyl orange wastewater were investigated. For photocatalytic degradation of 15 mm methyl orange, the degradation rate on tio2 was faster than that on tio2ac in the beginning, while after 4 h the degradation rate on tio2 was slower than that on tio2ac. Pec degradation and electrodegradation of methyl orange increased with increasing applied potential and electrolyte concentration. Preparation of magneticzno nanocomposite by high energy. Enhanced photocatalytic degradation of methyl orange dye.
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