Mechanochemical Synthesis of Silver Chloride Nanoparticles by a Dilution Method in the System NH4Cl-AgNO3-NH4NO3

Tatykaev, B. B.; Burkitbayev, Mukhambetkali; Uralbekov, Bolat; Уракаев, Ф. Х.

doi:10.12693/aphyspola.126.1044

Cited by 18 publications

(7 citation statements)

References 17 publications

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“…Figure 3 shows the thermograms obtained from the DSC analysis of AgNO 3 , CA and AgNO 3 /CA composite membranes (at 20%(w/w) CA and produced at 200 bar and 45 • C), performed according to the procedure described in Materials and Methods. The DSC results show evidence that the silver salt had a melting peak at about 215 • C, whereas CA had the glass transition temperature at 173 • C, and the melting peak at about 230 • C. These temperature values of the two components are consistent with the literature [38,39], and also characterize the thermogram of the composite membrane. Therefore, DSC analysis confirmed the AgNO 3 encapsulation in the polymeric matrix.…”

Section: Resultssupporting

confidence: 86%

Supercritical Phase Inversion: A Powerful Tool for Generating Cellulose Acetate-AgNO3 Antimicrobial Membranes

2020

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Antimicrobial composite membranes, formed by cellulose acetate loaded with AgNO3 particles, were produced by supercritical phase inversion. Different cellulose acetate concentrations were tested (15%, 20%, 30%(w/w)), whereas the active agent (i.e., silver nitrate) concentration was fixed at 0.1%(w/w) with respect to the quantity of polymer used. To determine the influence of the process parameters on membranes morphology, the pressure and temperature were varied from 150 to 250 bar and from 55 to 35 °C, respectively. In all cases, regularly porous membranes were produced with a uniform AgNO3 distribution in the membrane matrix. Silver release rate depended on membrane pore size, covering a time interval from 8 to 75 h.

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Section: Resultssupporting

confidence: 86%

Supercritical Phase Inversion: A Powerful Tool for Generating Cellulose Acetate-AgNO3 Antimicrobial Membranes

2020

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“…S1 †), that corresponds to the spontaneous thermal decomposition of the P123 promoted by the highly exothermic decomposition of the NH 4 NO 3 . 56 It is noteworthy that, in the same condition, the decomposition of P123 occluded in SiO 2 occurs at about the same temperature but in a broader temperature range with less intense exothermic peak. 57 Aer ethanol extraction, the bands assigned to the stretching mode of the C-H bond of the P123 molecules (2800-3000 cm À1 ) are not observed anymore (Fig.…”

Section: Characterization Of the Hybrid Mesophase And Efficiency Of Smentioning

confidence: 75%

“…The rst two resonances correspond to PPO moieties, the resonance at 70.3 ppm is assigned to PEO species while the CH 3 belonging to PPO units of the P123 is detected at 18.1 ppm. 55,56 All resonances are narrow, indicating that P123 alkyl chains are mobile. That suggests weak interactions with zirconia surface, which is consistent with the quasi total removal of P123 under Soxhlet ethanol extraction.…”

Section: Characterization Of the Hybrid Mesophase And Efficiency Of Smentioning

confidence: 99%

Amorphous mesostructured zirconia with high (hydro)thermal stability

et al. 2020

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“…The values of density were taken from Chemical Dictionary (1998). The bulk decomposition temperatures were taken from Broström et al, 2013;Tagawa, 1987;Nakamura et al, 1980;and Tatykaev et al, 2014. The data for ammonium salts are only shown in the Supplement.…”

Section: Laboratory Experimentsmentioning

confidence: 99%

A new method to quantify particulate sodium and potassium salts (nitrate, chloride, and sulfate) by thermal desorption aerosol mass spectrometry

Kobayashi

Takegawa

2021

Preprint

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Abstract. The reaction of sea salt (or biomass burning) particles with sulfuric acid and nitric acid leads to the displacement of chloride relative to sodium (or potassium). We have developed a new particle mass spectrometer to quantify non-refractory and refractory sulfate aerosols (referred to as refractory aerosol thermal desorption mass spectrometer: rTDMS). The combination of a graphite particle collector and a carbon dioxide laser enables high desorption temperature (up to 930 °C). Ion signals originating from evolved gas molecules are detected by a quadrupole mass spectrometer. Here we propose a new method to quantify the mass concentrations of sodium nitrate (NaNO3: SN), sodium chloride (NaCl: SC), sodium sulfate (Na2SO4: SS), potassium nitrate (KNO3: PN), potassium chloride (KCl: PC), and potassium sulfate (K2SO4 : PS) particles by using the rTDMS. Laboratory experiments were performed to test the sensitivities of the rTDMS to various types of particles. We measured ion signals originating from single-component particles for each compound, and found a good linearity (r2 > 0.8) between the major ion signals and mass loadings. We also measured ion signals originating from internally mixed SN + SC + SS (or PN + PC + PS) particles, and found that the temporal profiles of ion signals at m/z 23 (or 39) were characterized by three sequential peaks associated with the evolution of the desorption temperature. We tested potential interferences in the quantification of sea salt particles under real-world conditions by artificially generating "modified" sea salt particles from a mixture of diluted seawater and SS/SN solution. Based on these experimental results, the applicability of the rTDMS to ambient measurements of sea salt particles is discussed.

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Mechanochemical Synthesis of Silver Chloride Nanoparticles by a Dilution Method in the System NH₄Cl-AgNO₃-NH₄NO₃

Cited by 18 publications

References 17 publications

Supercritical Phase Inversion: A Powerful Tool for Generating Cellulose Acetate-AgNO3 Antimicrobial Membranes

Supercritical Phase Inversion: A Powerful Tool for Generating Cellulose Acetate-AgNO3 Antimicrobial Membranes

Amorphous mesostructured zirconia with high (hydro)thermal stability

A new method to quantify particulate sodium and potassium salts (nitrate, chloride, and sulfate) by thermal desorption aerosol mass spectrometry

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