Electrodeposition of Zn(O,S) (zinc oxysulfide) thin films: Exploiting its thermodynamic and kinetic processes with incorporation of tartaric acid

Cheng, Qiao; Wang, Dong; Zhou, Huanping

doi:10.1016/j.jechem.2017.07.020

Cited by 13 publications

(6 citation statements)

References 33 publications

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“…It can be also clearly seen from Fig. 6 that the mechanical strength of the membrane prepared from the semi-transparent suspension regenerated with ethanol is signicantly higher than those of the other membranes (the lm strength prepared by chitosan solution is generally [15][16][17][18] ). In view of the above analysis, it is possible that the occulated chitosan molecules in the suspension evaporate more rapidly during the drying process, and the formation of intermolecular hydrogen bonds improves the mechanical properties of the resulting lm.…”

Section: Determination Of Mechanical Properties and Water Sensitivitymentioning

confidence: 87%

“…[10][11][12] The wide use of tartaric acid in various elds due to its excellent properties, including safety, large adsorption capacity, high adsorption efficiency and good biodegradability. [13][14][15] Ionic liquids (ILs) are a group of salts that exist in liquid form at relatively low temperatures (<100 C) and have recently received increasing attention as new environmentally friendly solvents. They have been proved to have suitable chemical and thermal stability.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and characterization of chitosan membranes

et al. 2018

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The present study investigates a new solvent system for the dissolution of chitosan and a new method for preparing chitosan membranes. First, aqueous tartaric acid was used to pretreat chitosan. Then, the chitosan was precipitated with ethanol or other regenerating agents, and 1.5 mL of 1-ethyl-3methylimidazolium acetate ([EMIM]AC) was added to obtain translucent suspensions. The chitosan membranes were prepared by casting the suspensions on glass plates and allowing solvent evaporation.The structure and properties of the films were investigated by SEM, FT-IR, XRD and TGA. Also, the mechanical properties, as well as physical and chemical characteristics, of the chitosan films were evaluated. The results indicated that the optimum dissolution time was 10 min and the most suitable drying temperature was 60 C. The thus-prepared film was moderately thick (about 0.02 mm) and had a smooth surface, without curling. The chitosan film prepared by ethanol regeneration had a tensile strength of up to 24 MPa, a minimum swelling degree of 78%, and a water vapor transmission rate of 270 g m À2 d À1 without the addition of plasticizer. View Article Online a Calculated from the Mark-Houwink equation: [h] ¼ KM a The molecular weight of chitosan M ¼ 398300.This journal is

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Section: Determination Of Mechanical Properties and Water Sensitivitymentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of chitosan membranes

et al. 2018

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“…With increasing substrate temperature, the absorption edges shifted to a lower wavelength (blue shift). The optical band gaps of all Zn(O,Se) films were evaluated based on the Tauc relation (2) 7,54 by plotting hv versus (αhv) 2 and extrapolating the linear part of the plot to hv axis (x axis) (see Supplementary Fig. S8).…”

Section: Resultsmentioning

confidence: 99%

Pulsed laser deposition of Zn(O,Se) layers in nitrogen background Pressure

Abdalla

Bereznev

Spalatu

et al. 2019

Sci Rep

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Zinc oxy-selenide Zn(O,Se) is a novel material, that can replace the toxic CdS buffer layer in thin film solar cells and other optoelectronic devices. In this paper a systematic study of the structural, optical and electrical properties of Zn(O,Se) layers, grown by pulsed laser deposition under 50 mTorr of nitrogen background pressure, over a wide range of the substrate temperature, from RT to 600 °C, is reported. XRD, Raman, HR-SEM, XPS, UV-Vis techniques and Hall effect measurements have been used to investigate the structural, and optoelectronic properties of Zn(O,Se) layers. XRD analysis revealed that the polycrystalline ternary Zn(O,Se) phase formed at 500 °C. Raman analysis confirmed the formation of the polycrystalline Zn(O,Se) phase at 500 °C and an amorphous phase at substrate temperatures below 500 °C. Similarly, XPS analysis accompanied with the modified Auger parameters confirmed formation of ternary Zn(O,Se) layer at 500 °C as well. HR-SEM investigation showed the growth of homogenous, dense and adherent films onto a glass substrate. Furthermore, optical studies revealed that all prepared films are practically transparent in the visible region of the spectrum, with a band gap around 3 eV. Hall effect measurements revealed that conductivity, and electron concentration, increased by four orders of magnitude at 600 °C. It was found, that nitrogen background pressure maintained stable ratios of elemental contents in the whole range of the substrate temperature for Zn(O,Se) layers.

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“…The composition, structure, and stability fields of Ca, Fe 2+ , Fe 3+ , Zn, Cu, and Ni oxysulfides have been well documented because they are key intermediates in industrial carbothermal metal reduction and/or reduction-calcination reactions in metal-sulfur-calcium-oxygen (M-S-Ca-O) systems. A complete set of phases at the intermediate reduction stage of complex Zn, Cu, and Ni sulfide ores includes metals; Fe-Ni alloys; ferrites and aluminate-ferrites of Ca, CaO, or CaS; as well as Ca and Fe oxysulfides with different stoichiometry [97][98][99][100][101][102][103][104]. The industrial process is performed under ambient pressure and 900 to 1250 • C, in the presence of carbon (C 0 ), CaO/CaCO 3 , and/or CaSO 4 .…”

Section: Marbles: Te Signatures In Sediments and Redox Conditions Of Their Annealingmentioning

confidence: 99%

Ultrahigh-Temperature Sphalerite from Zn-Cd-Se-Rich Combustion Metamorphic Marbles, Daba Complex, Central Jordan: Paragenesis, Chemistry, and Structure

et al. 2020

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Minerals of the Zn-Cd-S-Se system that formed by moderately reduced ~800–850 °C combustion metamorphic (CM) alteration of marly sediments were found in marbles from central Jordan. Their precursor sediments contain Se- and Ni-enriched authigenic pyrite and ZnS modifications with high Cd enrichment (up to ~10 wt%) and elevated concentrations of Cu, Sb, Ag, Mo, and Pb. The marbles are composed of calcite, carbonate-fluorapatite, spurrite, and brownmillerite and characterized by high P, Zn, Cd, U, and elevated Se, Ni, V, and Mo contents. Main accessories are either Zn-bearing oxides or sphalerite, greenockite, and Ca-Fe-Ni-Cu-O-S-Se oxychalcogenides. CM alteration lead to compositional homogenization of metamorphic sphalerite, for which trace-element suites become less diverse than in the authigenic ZnS. The CM sphalerites contain up to ~14 wt% Cd and ~6.7 wt% Se but are poor in Fe (means 1.4–2.2 wt%), and bear 100–250 ppm Co, Ni, and Hg. Sphalerite (Zn,Cd,Fe)(S,O,Se)cub is a homogeneous solid solution with a unit cell smaller than in ZnScub as a result of S2− → O2− substitution (a = 5.40852(12) Å, V = 158.211(6) Å3). The amount of lattice-bound oxygen in the CM sphalerite is within the range for synthetic ZnS1−xOx crystals (0 < x ≤ 0.05) growing at 900 °C.

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Electrodeposition of Zn(O,S) (zinc oxysulfide) thin films: Exploiting its thermodynamic and kinetic processes with incorporation of tartaric acid

Cited by 13 publications

References 33 publications

Preparation and characterization of chitosan membranes

Preparation and characterization of chitosan membranes

Pulsed laser deposition of Zn(O,Se) layers in nitrogen background Pressure

Ultrahigh-Temperature Sphalerite from Zn-Cd-Se-Rich Combustion Metamorphic Marbles, Daba Complex, Central Jordan: Paragenesis, Chemistry, and Structure

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