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.
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 ...
With NaBX as the collector, malachite floatability was weak without sulfidation prior to flotation, and the flotation recoveries of malachite were 20.42% at 2 × 10 −5 mol/L concentration of ...
The S atomic concentration on the malachite surface increased from 0.43% to 1.05% in the absence of CH 6 N 2 O 2, as shown in Fig. 7 (c). However, the Cu atomic concentration on the malachite surface decreased from 16.13% to 15.27% owing to the formation of a sulfide film between S and Cu on the malachite surface.
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 ...
concentration were studied. Samples are prepared by using solution cast technique. The plasticization of PVC has been reported; softening of PVC occurs with increasing concentration …
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.
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 ...
malachite green) in a viscous solution of glycerol. A peak appeared at 660 nm. This result agreed ... was slightly different for each film, the concentration of the oligonucleotide adsorbed on the films were calculated from the calibration curve obtained …
The films of pure polyvinylidene fluoride (PVDF) and various concentration of malachite green (MG) doped have been prepared by solution cast method. The absorption spectra recorded by UV-VIS ...
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 …
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 ...
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 ...
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 …
Electrochemical determination of methyl parathion using poly(malachite green)/graphene nanosheets–nafion composite film-modified glassy carbon electrode
A novel fixed Z-scheme Ag|AgBr/Ag/TiO 2 photocatalyst composite film is prepared by continuous ion layer adsorption and sol-gel spin coating methods. Meanwhile, an immobilized reactor that can realize the separate collection of H 2 and CO 2 is also designed. The activity of the samples is evaluated through MG photocatalytic degradation with simultaneous hydrogen …
Zeta potential measurements indicate that a smaller isoelectric point value and a large number of copper-sulfide films formed on the malachite surface by enhancing sulfidation resulted in a …
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 ...
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 ...
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 ...
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 ...
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 ...
In this paper, we present the procedure for preparing different material, undoped (pure MG), NaBH4-doped MG and I-doped MG thin films using spray method technique on glass …
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
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 ...
A good linearity (r = 0.9887) was obtained in the concentration range of 2–100 mg/L. Furthermore, the AgFON substrate ex-hibited good uniformity with a relative standard deviation ... Rapid and Sensitive Detection of Malachite Green and Melamine with Silver Film over Nanospheres by Surface-Enhanced Raman Scattering ...
Films were prepared by solvent-casting method using dichloromethane. Effects of contact time, pH, salt concentration, and optimal experimental condition was evaluated. At pH …
Here we use a simple way of preparing an active TiO 2 thin film for Malachite Green (MG) elimination from an aqueous solution based on a combination of advanced oxidation processes ... 30 mg/L of initial MG concentration, 200 mA of electrical current, 0.4 mmol/L of FeCl 3, and 16 min of contact time. In addition, the degradation rates of MG by ...
The photodegradation of malachite green by the respective polymer nanocomposite films were shown in Figure 6c. The polymer nanocomposite film with 0.05 g BVO-12 exhibited ∼74% decrease in the concentration of malachite green …
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 …
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 spectroscopy (SERS), and it was soaked in MG solutions of different concentrations. The kinetic adsorption process was investigated by SERS method and density …
Adsorption of malachite green on the Florisil film supported on polypropylene. Florisil dosage: 5.00 g L -1 . ( ) The concentration of malachite green; ( ) relative adsorption (%). …