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Production of Volatile Sulfur Compounds in Packaged Broccoli 295 centration remained at the same level until the end of the experiment, whereas the CO 2 concentration increased to a maximum after 18 h and subsequently declined (Fig. 1). The concentrations of methanethiol increased gradually, reaching to a maximum of 309.7 ppm 36 h after packag-
found to be increased from 2.63 to 3.17 eV with a rise in the sulfur incorporation level. An increase in the concentration of sulfur causes a rise in resistivity from 106 7to 10 Ω cm. Keywords: Chemical bath deposition, Sulfur incorporation, Optical analysis, Electrical resistivity. DOI: 10.21272/jnep.14(2).02014 PACS numbers: 73.61 Ga, 61.05.cp
As depicted in Fig. 1 a, the free-standing PPC film was prepared through a simple high-temperature calcination process. The Raman spectrum of the derived PPC film is presented in Fig. 1 b. The D-band peak at approximately 1349 cm −1 represents the disordered carbon atoms of graphite. Another peak (G-band) around 1583 cm −1, arising from the vibration of …
Thin films of Tin oxide doped with deferent concentration of Sulfur were prepared on glass substrates at 400 °C by spray pyrolysis technique. The thin films were characterized to study …
Subsequently, electric and TE properties are systematically controlled by adjusting the carrier concentration from 3.0 × 10 19 to 4.5 × 10 20 cm −3, and accurately measured thermal …
The Field Emission Scanning Electron Microscope (FESEM) analysis is used to study the surface morphology of the deposited ZnS thin films. All the prepared films appear to be sphere-like particles with a uniform density as shown in Fig. 2.Here, the spray deposited for 0.6 M sulfur concentration shows smaller particle sizes with a more homogenous nature as …
The carrier concentration, resistivity and mobility of the CZTS film are 3.9×1016cm−3, 5.4Ωcm and 30cm2V−1s−1, respectively and the conduction type is p-type.
Polyester sulfur-coated urea (PSCU) is a novel controlled-release fertilizer widely used in China and some foreign countries, and it has been proven that sulfur film from controlled-release fertilizers can significantly improve the activation of …
The fluorescence intensity of PVA/SQDs film presented good linear relationship with the concentration of Fe 3+ in the range of 0–0.53 mM. The detection limit could reach 0.69 μM, which can well meet the detection demand of Fe 3+ in drinking water.
Herein, we have designed a colorimetric/SERS dual-responsive film based on NU-901-coated thiol-magenta-modified Ag nanoparticles (TM-Ag@NU-901) for on-spot detection of SO 2 under various conditions. AgNPs core serves as an adsorptive domain for concentration of TM probes, as well as a colorimetric indicator and SERS sensor for SO 2.NU-901 shell acts as …
Figure 1 shows the X-ray diffraction spectra of pure and Sulfur content MoO3 films deposited at substrate temperature of 310 °C. The pure MoO3 thin film (MO) shows the single orthorhombic phase (α-MoO3) (JCPDS Card No. 075-0912) with preferred orientation along (020) direction. With …
Bottle cap liner films ("ZnO [celite] –zeolite film") that absorb volatile sulfur compounds from kimchi were developed for kimchi-packaging plastic bottles using zinc oxide (ZnO) in celite (ZnO [celite]), zeolite, and low-density polyethylene (LDPE).The ZnO [celite] concentration-dependent deodorizing effect of the films and their physicochemical properties …
The spray deposited ZnS film for 0.4 M sulfur concentration detects the two emission peaks which are related to blue emission band around 405 nm which is attributed to …
The surface morphology and the cross-section image of laser annealed S-hyperdoped silicon film are obtained using a Carl Zeiss UItra-55 type cold field emission scanning electron microscope (SEM), and the sulfur-dopant concentration of film is measured using an energy dispersive spectrometer (EDS) that is equipped in SEM.
As sulfur ion concentration increased, the bandgap energy of lead sulfide thin films deposited on glass substrate by chemical bath deposition technique increased from 0.95 to 1.3 eV [12 ...
The S 2p signal was observed at ≈163 eV in the case of the 10% sulfur-doped film, whereas no distinct peak was revealed for the pristine film. Since sulfur has low relative sensitivity factor (RSF) of 1.67 for S 2p, (cf. RSF of Sn 3d 5/2 = 15.03), the reliable quantitative detection of S with XPS analysis is challenging for the S doped (PEA ...
The sulfur nominal concentration changed by adding different thiourea concentrations, CdS films were deposited at thiourea concentrations ranging from 0.025 M to 0.250 M. The best crystalline quality of CdS films was obtained for 0.075 M and 0.1 M thiourea concentrations according to XRD analysis. The introduction of very small fluorine amount ...
At one point in the absorber, the partial pressure of the SO2 in the gas stream is 4x10 Pa and the concentration of the contacting liquid stream is 0.55 kg mol/m'. The individual gas film mass transfer coefficient is kg - 3.95x109 kg mol/m² s Pa and the individual liquid film mass transfer coefficient is ki = 1.1x10* kg mol/mº s (kg mol/m').
Background: In neutral or alkaline soils, iron (Fe) easily forms insoluble complexes, which makes it difficult for plants to utilize Fe in the soil for nutrition. Polyester sulfur-coated urea (PSCU) is a novel controlled-release fertilizer widely used in China and some foreign countries, and it has been proven that sulfur film from controlled-release fertilizers can significantly improve the ...
Hence the terminology "two" film and these are referred to as gas film and liquid film. Concentration gradients are assumed to exist only in the films. Outside the film, the phases are assumed to be at uniform concentration and are referred to as gas bulk and liquid bulk. A mass transfer driving force is defined for transport in the gas film
The creation of acid mine drainage (AMD) is mainly attributed to the presence of sulfur-bearing minerals or sulfur-containing waste rocks, which thoroughly interact with oxygen, rainwater, and microorganisms [1, 2] throughout the mining process.They are characterized by low pH (2–4), high corrosivity, and water containing significant concentrations of heavy metal …
In the experiment to study the effect of concentration on the rate of reaction, sodium thiosulfate is reacted with hydrochloric acid to produce a precipitate of sulfur and three other products.As the reaction conditions include TFA (trifluoroacetic acid) and H 2 O generally in mixed CH 2 Cl 2 /H 2 O solvent, we examine CF 2 H and CF 3 radicals ...
In the present report, we have successfully synthesized sulfur ion concentration dependent SnS 2 thin films using energy efficient, low cost and self-assembled arrested precipitation technique (APT). The influence of sulfur ion concentration on the crystallinity, optical tuning, surface morphology and photoconversion efficiency of SnS 2 thin films was …
Cu2ZnSnS4 (CZTS) thin films were deposited on glass substrates by using spin-coating and an annealing process, which can improve the crystallinity and morphology of the thin films. The grain size, optical gap, and atomic contents of copper (Cu), zinc (Zn), tin (Sn), and sulfur (S) in a CZTS thin film absorber relate to the concentrations of aqueous precursor …
Hydrogen sulfide (H 2 S) was introduced into a microwave plasma chemical vapor deposition of microcrystalline diamond thin film.Secondary-ion mass spectroscopy showed that sulfur concentration was controlled from 2 × 10 15 to 9 × 10 17 cm − 3 by controlling the H 2 S/CH 4 ratio, while that of hydrogen concentration was around 5 × 10 20 cm − 3 and was …
Adsorbed sulfur occupies the position of sulfur vacancy defect in the crystal through internal diffusion, which leads to the decrease of defect concentration and the improvement of film quality.
The conductivity of tungsten disulfide (WS2) films using sputtering, which is a physical vapor deposition (PVD), was enhanced using a chlorine (Cl2)-plasma treatment and sulfur-vapor annealing (SVA). For WS2 films to be used in thermoelectric devices, its carrier concentration must be controlled. Therefore, we exposed WS2 films to Cl2-plasma as a doping method. In …
Influence of sulfur concentration variation on the physical and chemical properties of nebulizer spray pyrolysis deposited SnS2 thin films are investigated. The SnS2 thin films …
changing the concentration of sulfur in the precursor. The nanowire structure with a high concentration of sulfur in the solu-tion is a promising way to improve the Bi 2 S 3 thin lm solar cell. Keywords Spin coating · Bi 2 S 3 solar cell · nanowire · sulfur variation in the precursor · annealing temperature Introduction
EDX spectra of thin films prepared at different thiourea molarity that shows all the elements (copper, tin, cobalt, and sulfur) compose the film are shown in Fig. 3.It was …