Phase synthesis method

The single phase of Mn0.5Fe2.5O4 spinel crystals was prepared by the microemulsion method with the oil phase is DGDE (diethylene glycol diethyl ether). The characteristics of the materials have been determined by the X-ray diffraction (XRD), Energy-dispersive X-ray spectroscopy (EDX), Scanning electron microscopy (SEM) and Brunaure-Emmet-Teller (BET) nitrogen adsorption and desorption, Vibration sampling magnetometer (VSM), Fourier transform infrared spectroscopy (FTIR).

7p vikwong 29-09-2024 4 1   Download

In this paper, AgI was successfully synthesized in the presence of WO3 to form AgI/WO3 Z scheme hetero-junction by solid-phase heating method and by varying the WO3 mole ratio (1:0.5, 1:1, 1:2 and 1:3) with respect to the AgI.

6p vikwong 29-09-2024 2 1   Download

This study focuses on the synthesis of V-doped TiO2 materials using a modified polyol method to enhance their efficiency. The obtained materials were characterized by various methods such as XRD, EDX, FTIR, SEM, TEMSAED, Raman, and UV-Vis DRS. The results indicated the crystalline anatase phase of TiO2, with spherical morphology and an average size of 30nm. The UV-DRS measurement demonstrated that doped materials have a lower bandgap than the pristine TiO2.

6p vikwong 29-09-2024 1 1   Download

[Leu]6-aureobasidin K 1 is an analog of AbK, in which aIle residue at the sixth position of AbK is replaced by Leu. [Leu]6-AbK 1 was successfully synthesized using a combination of solid- and solution-phase that has a difference with the previous method applied for the synthesis of other aureobasidin analogues, [2S,3S-Hmp]-AbL 2.

8p tocectocec 25-05-2020 7 1   Download

Aripiprazole is a widely used antipsychotic approved by the FDA (Food and Drug Administration) in 2002. Methods for preparation of aripiprazole mainly involve the use of expensive and toxic solvents, and the reaction time can be even several hours long.

6p tocectocec 25-05-2020 11 1   Download

The goads of this thesis: Successfully fabricated ceramic piezoelectric samples (Ba1-xCax) TiO3 (BCT) and BZT-BCT by solid phase synthesis method. BZTBCT materials must be good quality, high piezoelectric coefficient (500-600 pC / N). Studying the relationship between morphological competition and dielectric ferroelectric properties, especially with the high piezoelectric properties of materials.

26p xacxuoc4321 09-07-2019 52 7   Download

Shikimic acid is an important product in the synthesis of the anti-influenza drug osseltamivir phosphate. LC-MS method was applied for the determination and quantification of shikimic acid from Vietnamese star anis (Illicium verum Hook.f.). Using the instrument system LC/MSD Agilent series 1110, separation was performed on a Zorbax SB-C18 RP (3.0x150 mm) column with water containing 0.1% formic acid and methanol as mobile phase. Analytes were detected both by DAD at 210 nm and by MS detectors.

6p uocvong03 24-09-2015 49 5   Download

The oxide reduction diffusion (ORD) procedure has recently been applied in synthesizing hydrogen storage materials AB5 for Ni-MH batteries. Starting from metal hydroxides and La oxalat precursor, superfine powder alloys LaNi5, LaNi4.5Co0.5 and LaNi3.87Mn1.13 were obtained by this “soft-chemistry” route. Chemical composition, structure and morphology of alloy phases were examined by different analysis techniques such as AAS, EPMA, X-ray and TEM. The H2-absorption and desorption behavior of crystalline products was determined by Sieverts’ method.

9p uocvong01 24-09-2015 37 3   Download

The introduction of noncanonical amino acids and bio-physical probes into peptides and proteins, and total or segmental isotopic labelling has the potential to greatly aid thedeterminationofproteinstructure, functionandprotein– protein interactions.To obtain a peptide as large as possible by solid-phase peptide synthesis, native chemical ligation was introduced to enable synthesis of proteins of up to 120 amino acids in length.

15p dell39 03-04-2013 42 4   Download