Inorganic ions

In this work, nano-SiO2 have been used as nanocarriers for loading Ce(III) ions (SiO2@Ce3+). After loading, silane coupling agent has been used to modify these nanocarriers (m-SiO2@Ce3+). Then, these modified nanocarriers were added as green inhibitors into the inner epoxy coating matrix, which was based on the epoxy resin (DER 671X75) and hardener (polyamide Epicure 3125). Morphological study by FE-SEM showed that the spherical nanoparticles (mSiO2@Ce3+) were in size < 100 nm and dispersed rather homogeneously into the polyme matrix.

7p dianmotminh02 03-05-2024 3 1   Download

This compound converted to Mannich base which interne illustrated as tridentate ligand of NO2-type. Meanwhile, the organic synthesis of the compounds is not an easy task, especially lactonization; hint naphthafuran-2-one has never been prepared from amino nitrile previously. Selected metal ions of known anticancer activity interacted with the ligand to present novel complexes to figure out the cytotoxicity effect of both organic and inorganic parts against cancer cell line.

10p dianmotminh02 03-05-2024 2 1   Download

Ebook "Functional materials in amperometric sensing polymeric, inorganic, and nanocomposite materials for modified electrodes" critically discuss preparation methods, in addition to chemical and physical characteristics of these new materials. They present various examples of emerging applications in electroanalysis. Due to its comprehensive coverage, the book will become an indispensable source for researchers working on the development and even proper use of new amperometric sensor systems.

228p tudohanhtau1006 29-03-2024 2 1   Download

Ebook "Handbook of inorganic compounds" is fully revised and updated. New data include optical inorganics, radiation detection inorganics, thermochromic compounds, piezochromic compounds, metal ion coordination complexes, expanded crystallographic and structural data for inorganics, catalysts, superconductors, and luminescent (fluorescent and phosphorescent) inorganics.

572p coduathanh1122 27-03-2024 3 1   Download

Ebook "Inorganic membranes for energy and environmental applications" progress in membrane science, especially in advanced materials and novel reaction and separation concepts. The book classifies membranes based on the mechanism of operation, i.e., size exclusion filtration, solution-diffusion, and mixed ion-electron conduction of the permeate streams.

318p manmanthanhla0201 26-02-2024 3 1   Download

Ebook "Green chromatographic techniques: Separation and purification of organic and inorganic analytes" presents a unified outlook on counter-current, ion size exclusion, supercritical fluids, high-performance thin layers, and gas and size exclusion chromatographic techniques used for the separation and purification of organic and inorganic analytes. It also describes a number of green techniques, green sample preparation methods and optimization of solvent consumption in the chromatographic analysis of organic and inorganic analytes.

220p nhanphanguyet 28-01-2024 3 2   Download

The book is divided into two parts, with Chapters 1 to 4 belonging to the first part on “Hybrid Nanomaterials,” and Chapters 5 to 8 belonging to the second part on ‘Flexible Electronics.

152p dangnhuy06 25-05-2023 6 3   Download

The work focus to enhance the properties of xanthan gum (XG) by anchoring metal ions (Fe, Zr) and encapsulating inorganic matrix (M@XG-ZA). The fabricated nanocomposite was characterized by Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDX), Fourier Transform Infrared Spectroscopy (FTIR), surface area (BET) and zeta potential analysis.

11p vihermione 06-01-2023 3 2   Download

We propose an injectable nanocomposite hydrogel that is photo-curable via light-induced thiol-ene addition between methacrylate modified O-acetyl-galactoglucomannan (GGMMA) and thiolated cellulose nanocrystal (CNC-SH).

11p viginny 30-12-2022 9 2   Download

The ion-exchange and complex forming equilibria were quantitatively described and demonstrated in order to understand major factors in the control of selectivity in the analytical separation of carboxylic acids and inorganic anions in cryptand based ion chromatography. A complex retention model has been developed for the separation on a non-conventional IC column.

11p viginny 23-12-2022 9 3   Download

The speciation and preconcentration of selenium were carried out by solid phase extraction using nanozirconium oxide/boron oxide (ZrO2/B2O3). Electrothermal atomic absorption spectrometry (ETAAS) was used for detection. This preconcentration and/or speciation method depends on the retention of Se(IV) ions selectively as its ammonium pyrrolidine dithiocarbamate (APDC) complex on the sorbent. The effects of pH, flow rate, and volume of sample solution and eluent type were investigated for determining the optimum preconcentration and speciation conditions.

12p langthannam 29-12-2021 11 0   Download

Halophytes adapting to live in salinized areas can activate some tolerance mechanism through signal compounds to cope with salinity. However, the role of co-activity of signal compounds in salt tolerance of halophytes has not yet fully understood. We researched the changes in signal compounds involved in the salt tolerance mechanism, including inorganic ions, osmoprotectants and substances related to the antioxidant system in Scorzonera hieraciifolia with fleshy shoots extreme-halophyte.

13p tudichquannguyet 29-11-2021 17 1   Download

In this work, a very simple, rapid, cheap, sensitive, and selective polymer film-modified electrode for vanillin determination in commercial food products was developed via electrochemical polymerization and overoxidation of pyrrole. The formation of both poly(pyrrole) and overoxidized poly(pyrrole) films on a glassy carbon electrode surface was characterized by electrochemical impedance spectroscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy. Under optimized conditions, the calibration graph comprises two linear segments of 0.032–1.500 µmol L−1 and 3.00–150.

15p tudichquannguyet 29-11-2021 11 1   Download

In this article, we have reviewed the recent progress made in this newest member of carbon nanomaterials, focusing on their synthetic strategies namely top-down and bottom-up methods. In addition, their properties including morphology and structure, compositions, optical properties (absorbance, photoluminescence properties, quantum yields and luminescence mechanisms) have been presented.

14p caygaocaolon11 18-04-2021 27 3   Download

Plant growth promoting rhizo-bacteria (PGPR) affect plant growth by producing and releasing secondary metabolites (plant growth regulators/phytohormones/biologically active substances), facilitating the availability and uptake of certain nutrients from the root environment and inhibiting plant pathogenic organisms in the rhizosphere. At the same time, plants produce root exudates containing e.g. sugars, amino acids, organic acids, vitamins, enzymes and organic or inorganic ions.

6p angicungduoc5 12-06-2020 16 0   Download

N fertilizers and high yielding varieties were major drivers of the enormous increase in rice productivity during the past 50 years. Despite increasing food production higher nitrogen use also contributed in environmental pollution and Increasing consciousness of conservation of environment and mitigation of climate change brought a major shift in cultivation practices of major crops towards organic agriculture. An important issue regarding the acceptance of organic agriculture is the question of productivity.

19p nguaconbaynhay5 16-05-2020 14 0   Download

Chenopodium quinoa Willd., a halophytic crop, shows great variability among different genotypes in response to salt. To investigate the salinity tolerance mechanisms, five contrasting quinoa cultivars belonging to highland ecotype were compared for their seed germination (under 0, 100 and 400 mM NaCl) and seedling’s responses under five salinity levels (0, 100, 200, 300 and 400 mM NaCl).

15p viharuno2711 21-04-2020 6 1   Download

Phosphorus is important for early shoot and root development, providing energy for plant processes such as ion uptake and transport. Phosphorus is the most important nutrient element (after nitrogen) limiting agricultural production in most regions of the world. Phosphorous is the second major nutrient for the plants, however, it is the least soluble in soil. The total phosphorous in the soil ranges from 0.01 - 0.2 per cent but only a small amount of it is available to the plants.

9p trinhthamhodang4 22-03-2020 27 1   Download

Nanotechnology is the rapidly expanding field and nanoparticles are omnipresent. Biological nanoparticles are assembled from molecules or atoms synthesized in a biological system. They include magnetosomes, lipoproteins, viruses, exosomes and ferritins.. A typical instance of a protein cage possessing this native biological function is ferritin. This engineered ferritin, which has the same architecture as natural H-ferritin, is termed magnetoferritin. The iron storage protein ferritin consists of a spherical polypeptide shell (apoferritin) and accommodates various metal ions.

5p nguaconbaynhay1 08-12-2019 10 1   Download

Triprolidine hydrochloride (TpCl) ion-selective carbon paste electrodes were constructed using Tp-TPB/Tp-CoN and Tp-TPB/Tp-PTA as ion-exchangers. The two electrodes revealed Nernstian responses with slopes of 58.4 and 58.1 mV decade1 at 25 C in the ranges 6 • 106 – 1 • 102 and 2 • 105 –1 • 102 M for Tp-TPB/Tp-CoN and Tp-TPB/Tp-PTA, respectively. The potentials of these electrodes were independent of pH in the ranges of 2.5–7.0 and 4.5–7.0, and detection limits were 6 • 106 and 1 • 105 M for Tp-TPB/Tp-CoN and Tp-TPB/Tp-PTA, respectively.

7p kethamoi1 20-11-2019 11 1   Download