Polyvinyl butyral films containing leuco-malachite green …
The absorption spectra of the PVB–LMG films irradiated to different doses in the range of 0–4000 Gy were recorded before and after irradiation. Fig. 1 shows the results of the films containing 5% of LMG and 35% of chloral hydrate. The irradiated films have a main absorption peak at 629 nm characterized as green color of malachite green.The color of the …
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Malachite green (initial concentration, 20 ppm
Both the PVA-10% Na-MT particles and the film adsorb nearly all of the free dye for these trials (20 ppm starting MG concentration). Because twice as much film mass is used, the film's q e value ...
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Adsorption efficiency of poly(malachite green) films …
Theoretically, to make conducting polymer based sensors operate successfully and efficiently, the electrocatalytic properties of the films and the underlying principles of electrocatalysis towards solution species have to be well understood, for example, the specific interaction of a polymer coated electrode with a solution species, the kinetics of heterogeneous …
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Quantitative analysis model based on surface‐enhanced …
In order to investigate the adsorption process of malachite green (MG) on gold nanoparticles, a simple gold nanoparticles‐assembled film was prepared as a substrate of surface‐enhanced Raman ...
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Enhanced sulfidation xanthate flotation of malachite using …
Microflotation studies. The flotation recovery of malachite as a function of sodium butyl xanthate (NaBX) concentration in the absence or presence of different ammonium sulfate concentrations with 5 × 10 −4 mol/L Na 2 S·9H 2 O as a sulfidizing agent is shown in Fig. 1.With NaBX as the collector, malachite floatability was weak without sulfidation prior to flotation, and the flotation ...
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Adsorption of malachite green on the Florisil film supported …
A detection limit of 0.013 mg/L with a linear analytical response range within the concentration of 0.05 to 0.3 mg/ L of malachite green (MG) with a correlation coefficient of 0.997 and standard ...
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Investigation kinetics mechanisms of adsorption malachite …
2020. The negative effect of high concentration of dyes in the aquatic environment on humans and aquatic plants prompted this research. The adsorption of hazardous malachite green (MG) from aqueous solution using activated carbon derived from desert date …
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A Flexible and Highly Sensitive Surface−Enhanced Raman Scattering Film
The fabricated AuNPs/PMMA film SERS substrate allowed detection of model molecule, malachite green isothiocyanate, at a concentration as low as 0.1 nM, and exhibited good reproducibility in the ...
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Catalytic capability of poly(malachite green) films based
Carbon nanotubes (CNTs)-Fe-Fe3C composites were prepared from ferrocene by one-step microwave-assisted method. A novel electrochemical sensor based on CNTs-Fe-Fe3C composite modified glassy carbon ...
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Removal of malachite green from aqueous solution using …
The removal of malachite green (MG) from aqueous solution using teak leaf litter powder (TLLP) was investigated. The process was influenced by initial concentration, pH and temperature of dye solution as well as TLLP dosage. Optimum removal of MG per gram of TLLP occurred at 2 g/L and at pH 6–8. Dubinin–Radushkevich and Freundlich isotherm models fit the …
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Photoactive of Chitosan-ZrO2/TiO2 thin film in catalytic …
The X-ray diffraction analysis shows that TiO 2 films have the tetragonal structure of anatase with a preferential growth along the (101) direction. The crystallite size of TiO 2 films increases from 30 to 47 nm with increasing precursor concentration. The SEM images reveal uniform, homogenous and dense film with good adhesion to the substrate ...
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Biosorption of Malachite Green from Aqueous Solutions …
Films were prepared by solvent-casting method using dichloromethane. Effects of contact time, pH, salt concentration, and optimal experimental condition was evaluated. At pH …
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Study on plasticization of thin film of polyvinyl chloride …
Research Journal of Recent Sciences _____ ISSN 2277-2502 Vol. 12(1), 1-9, April (2023) Res. J. Recent Sci. International Science Community Association 3 Figure-1: Variation of Breaking Load with increasing Malachite Green concentration in PVC. Figure-2: Variation of Elongation at break with M Green concentration in PVC.
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Uniform plasmon enhanced luminescence of Eu-PMMA films …
Based on the enhanced luminescence, the sensitive and single droplet (<10 μL) detection of malachite green is achieved through the fluorescence resonance energy transfer between Eu and MG. The detected lowest concentration for MG is reduced from 0.01 mg L-1 to 0.001 mg L-1. Further more, the Au NRs embedded Eu-PMMA films as the platform ...
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Malachite green (initial concentration, 20 ppm
PVA/CMC/TUR film displayed good adsorption capacity (qe: 6.27 mg/g) and maximum dye adsorption (R%; 83%) and was achieved at initial dye concentration of 10 mg/L with contact time 170 min at...
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Improved activation of malachite sulfurization flotation by …
This demonstrates the formation of one or more hydrophobic copper sulfide film layers on the malachite surface [20], [21]. The copper-sulfur film might contain CuSCN species. ... The EDS surface scan analysis detected that the sulfur (S) elemental concentration on the malachite surface was 0.5 % in the presence of Na 2 S, indicating its ...
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Simultaneous Adsorption and Photocatalytic Degradation of Malachite
This paper demonstrated the applicability of electrospun P(3HB) film as a dye adsorbent agent. Malachite green (MG) was used as the model dye in this study. ... pp. 1199–1205, 2007. [13] C. Akmil-Başar, Y. Önal, T. Kiliçer, and D. Eren, "Adsorptions of high concentration malachite green by two activated carbons having different porous ...
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Electrochemical determination of methyl parathion using poly(malachite …
Then solution was diluted to different concentrations and determined at the J Appl Electrochem (2012) 42:509–516 515 Fig. 5 a Chronoamperometric measurements for a range of pnitrophenol. a–g 0, 0.02, 0.2, 0.4, 1.2 and 1.5 lM). b The linear relationship between chronoamperometric response current and p-nitrophenol concentration Table 1 ...
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Electrocatalysis and simultaneous determination of …
The presence of MWCNTs in the composite film (MWCNT–NF–PMG) enhances the surface coverage concentration (Γ) of PMG by fivefold. Similarly, an electrochemical quartz crystal microbalance study revealed enhancement in the deposition of PMG at MWCNT–NF film when compared with bare and only NF modified electrodes.
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Catalytic capability of poly(malachite green) films based
Malachite green (Tianjin Chemical Co., Tianjin, China), ascorbic acid (Shanghai Chemical Co., Shanghai, China), and dopamine (Acros Organic Co., USA) were used as received without further purifications.
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Determination of the optical constants and optical …
The spray method technique has been successfully used to deposit highly uniform and good adhesion malachite green (MG) thin films. The optical constants of the doping thin films were obtained from the analysis of the ... MG crystal was dissolved in 50 ml of ethanol, the concentration of the resulting MG dye solution 0.004M, then the
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Electrochemical determination of methyl parathion using poly(malachite
Electrochemical determination of methyl parathion using poly(malachite green)/graphene nanosheets–nafion composite film-modified glassy carbon electrode
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Absorbance versus wavelength spectra of pure …
Absorbance versus wavelength spectra of pure and malachite green doped PVDF film. The films of pure polyvinylidene fluoride (PVDF) and various concentration of malachite green (MG) doped...
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Selective Removal of Malachite Green Dye from Aqueous …
Naturally occurring non-toxic vegetable oils have been used as membrane liquids. Polyvinylidene fluoride (PVDF) films have been used as supports for the liquid membrane. Various parameters affecting the dye permeation such as initial dye concentration, pH, stripping acid concentration, oil viscosity and membrane stability have been investigated.
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Selective Removal of Malachite Green Dye from Aqueous …
Polyvinylidene fluoride (PVDF) films have been used as supports for the liquid membrane. Various parameters affecting the dye permeation such as initial dye concentration, …
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Influence of solid corrosion by-products on the …
In-situ experiments were performed in copper pipes under different carbonate concentrations and ageing times. Our results show that the amount of solid corrosion by-products and concentration of hydrogen ions affect the rate of DO consumption during stagnation. ... providing the conditions in which a passivating film of malachite is likely to ...
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Construction of fixed Z-scheme Ag|AgBr/Ag/TiO2
Some influence factors, AgBr film layer number, Ag foil thickness and TiO 2 film layer number, are investigated on the activity of fixed Z-scheme Ag|AgBr/Ag/TiO 2 photocatalyst composite film. The contribution of Ag SPR effect is also researched. The effects of irradiation time, MG concentration and used times are examined for searching optimum ...
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Structural characterization of PVDF/PVA polymer blend film …
Structural characterization of PVDF/PVA polymer blend film doped with different concentration of NiO NPs for photocatalytic degradation of malachite green dye under visible light. Asmaa M. Ismail, ... Photocatalytic activity of PVDF/PVA/7% NiO NPs was 95.4% degradation of malachite green dye at pH 9, 3 g/L film weight and 300 min visible light ...
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Photoactive of Chitosan-ZrO2/TiO2 thin film in catalytic …
Photodegradation efficiency of model dyes compounds, malachite green (MG) increased from 11.87% to 30.72% with ZrO 2 and CS addition in TiO 2 catalyst under solar irradiation. The optimum photodegradation condition lowered the initial MG concentration (5 mg/L) in the acidic medium.
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Leader | Malachite Art Films | Charles Mapleston
Having spent many years shooting award-winning films on 16mm & 35mm filmstock around Britain and the world with crews large and small, Malachite 'went digital' for the Millennium, investing in new lightweight and compact equipment. Usually Charles Mapleston now works with just one specialist collaborator.
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