scholarly journals Environmentally Friendly Method of Silicon Recycling: Synthesis of Silica Nanoparticles in an Aqueous Solution

2020 ◽  
Vol 8 (37) ◽  
pp. 14006-14012
Author(s):  
Julia V. Bondareva ◽  
Timur F. Aslyamov ◽  
Alexander G. Kvashnin ◽  
Pavel V. Dyakonov ◽  
Yulia O. Kuzminova ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Silica Nanoparticles ◽  
Environmentally Friendly ◽  
Environmentally Friendly Method

A versatile method to prepare size- and shape-controlled copper nanocubes using an aqueous phase green synthesis

RSC Advances ◽  
2016 ◽  
Vol 6 (94) ◽  
pp. 91949-91955 ◽  
Author(s):  
Thulitha Abeywickrama ◽  
Niharika Neerudu Sreeramulu ◽  
Lan Xu ◽  
Hemali Rathnayake
Keyword(s):  
Aqueous Solution ◽  
Green Synthesis ◽  
Aqueous Phase ◽  
Room Temperature ◽  
Environmentally Friendly ◽  
Size And Shape ◽  
Controlled Morphology ◽  
Shape Controlled ◽  
Environmentally Friendly Method

A versatile, simple, and environmentally friendly method of preparing copper nanocubes with controlled morphology in aqueous solution at room temperature is demonstrated to make Cu nanocubes with sizes of 100 ± 35 nm.

Application of Silica Nanoparticles in the Determination of Herbicides in Environmental Water Samples Using Liquid Chromatography-Mass Spectroscopy

2020 ◽  
Vol 16 (5) ◽  
pp. 748-756
Author(s):  
Mir Waqas Alam ◽  
Tentu Nageswara Rao ◽  
Yarasani Prashanthi ◽  
Vourse Sridhar ◽  
Adil Alshoaibi ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Liquid Chromatography ◽  
Silica Nanoparticles ◽  
Solid Phase ◽  
Silica Nanoparticle ◽  
Environmental Water ◽  
Phase Extraction ◽  
Functionalized Nanoparticles ◽  
Supporting Material

Background: Herbicides are very beneficial in the crop yield with the aid of controlling weeds within the agriculture, but several herbicides are chronic in soil. Objective: In this study, nanoparticles and the packages of synthesized novel silica nanoparticles were studied for the preconcentration of herbicides. Methods: These nanoparticles prepared by the Stöber mechanism were purified and functionalized. Nanoparticles thus prepared successfully were used as supporting material for the preconcentration of residues of herbicides in the water. Results: Preconcentration was achieved by preparing the silica-based solid-phase-extraction cartridges. Nanoparticles used for this purpose were within the range of 50-250 nm. An SPE cartridge was prepared by packing 200 mg of silica nanoparticle in the empty cartridge of diameter 5.5 cm and length 0.6 cm in between PTFE frits. Aqueous solutions of 0.1 μg/ml of herbicides were prepared separately, and 10 ml of the solution was passed through the cartridge at the rate of 0.2 ml/min. After passing 10 ml volume of the aqueous solution, residues adsorbed on the cartridge were eluted using 2 ml of acetonitrile. The eluate was injected to determine the herbicide residue adsorbed on the SPE cartridge. Conclusion: In the study, it was found that greater than 90% of the herbicide residues were trapped on silica nanoparticle-based SPE cartridge. An analytical method was developed for the simultaneous determination of these herbicides. The residues were quantified by LC-MS/MS with ESI mode.

A simple and environmentally friendly method for the synthesis of N-phenylanthranilic acid derivatives

2006 ◽  
Vol 2006 (5) ◽  
pp. 342-344 ◽  
Author(s):  
Hanakere R. Girisha ◽  
Gejjalagere R. Srinivasa ◽  
D. Channe Gowda
Keyword(s):  
Environmentally Friendly ◽  
Environmentally Friendly Method

A multifunctional and environmentally-friendly method to fabricate superhydrophilic and self-healing coatings for sustainable antifogging

2021 ◽  
Vol 409 ◽  
pp. 128228
Author(s):  
Xiaoqin Wang ◽  
Shuhui Li ◽  
Jianying Huang ◽  
Jiajun Mao ◽  
Yan Cheng ◽  
...  
Keyword(s):  
Environmentally Friendly ◽  
Self Healing ◽  
Environmentally Friendly Method

Direct Access to S-Heterocycles by Scandium(III) Triflate Catalyzed Cyclization of Aromatic Thiols and Diols

Synlett ◽  
2021 ◽  
Author(s):  
Maki Minakawa ◽  
Keisuke Minami ◽  
Yuya Sato
Keyword(s):  
Reaction Pathway ◽  
Environmentally Friendly ◽  
Direct Access ◽  
Aromatic Thiols ◽  
Thiophene Derivatives ◽  
Environmentally Friendly Method

AbstractA simple and environmentally friendly method to prepare S-heterocycles by cyclization of aromatic thiols and diols with H2O as a byproduct is described. The Sc(OTf)3-catalyzed dehydrative cyclizations of aromatic thiols and diols provided the corresponding thiopyran and thiophene derivatives. Control experiments were also performed to obtain insights into the reaction pathway

scholarly journals FTIR Spectrophotometry as a Green Tool for Quantitative Analysis of Drugs: Practical Application to Amoxicillin

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Stefany Fanelli ◽  
Alexander Zimmermann ◽  
Eliane Gandolpho Totóli ◽  
Hérida Regina Nunes Salgado
Keyword(s):  
Environmentally Friendly ◽  
Infrared Region ◽  
Potassium Bromide ◽  
Bactericidal Action ◽  
Practical Application ◽  
Mid Infrared ◽  
Brazilian Legislation ◽  
Ich Guidelines ◽  
Ftir Spectrophotometry ◽  
Environmentally Friendly Method

Amoxicillin is an antimicrobial agent that belongs to the penicillin compounds. Its bactericidal action causes a destruction of the cell wall of bacteria. It is widely used in clinical practice, and it belongs to the Brazilian National List of Essential Drugs (RENAME). In literature, there are some green analytical methods for the amoxicillin analysis; however, none of them is focused on its quantification in capsules. Therefore, the aim of this study was to validate an environmentally friendly analytical method for the analysis of this antimicrobial action in capsules, using spectrophotometry in the mid-infrared region. The analyses were performed in the spectral range of 1815–1736 cm−1, and the samples were analyzed as potassium bromide pellets. The method was validated according to the ICH guidelines and Brazilian legislation. Linearity, selectivity, precision, accuracy, and robustness were evaluated and showed adequate results for method validation, in a concentration range of 0.5–1.5 mg/pellet. Thus, it is concluded that the validated spectrophotometric method is able to quantify amoxicillin in capsules. In addition, it is a fast, economical, and environmentally friendly method, since it does not use organic solvents, and it can be used for quality control of routine analysis of this drug.

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