Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 12 of 12
Full-Text Articles in Physical Sciences and Mathematics
Exploring The Efficiency Of Nitrogenated Carbon Quantum Dots/Tio2 S-Scheme Heterojunction In Photodegradation Of Ciprofloxacin In Aqueous Environments, Yilmaz Ateş, Zafer Eroğlu, Özkan Açişli, Önder Meti̇n, Semra Karaca
Exploring The Efficiency Of Nitrogenated Carbon Quantum Dots/Tio2 S-Scheme Heterojunction In Photodegradation Of Ciprofloxacin In Aqueous Environments, Yilmaz Ateş, Zafer Eroğlu, Özkan Açişli, Önder Meti̇n, Semra Karaca
Turkish Journal of Chemistry
The usability of polyvinyl chloride-based quaternary triethanol ammonium chloride anionite (PVC-TEAC) as a potential extractant for tungstate was investigated to recover tungstate from Gabal Qash Amir, Egypt, assaying 70.91% WO3. Structure elucidation for PVC-TEAC anionite was successfully carried out using several techniques. Experimental measurements, such as pH, agitation time, initial tungsten concentration, anionite dose, co-ions, temperature, and eluting agents, have been optimized. It was found that PVC-TEAC anionite has a maximum capacity of 63 mg per gram. From the distribution isotherm modeling, Langmuir’s model fits the experimental results better than Freundlich’s, with a theoretical value of 61.728 mg g–1. According …
Investigation Of Antibacterial And Photocatalytic Efficiency Of Green Zno Nanoparticles That Synthesized With Celosia Cristata Flower Extract, Mahmure Özgür, Özgür Duygulu, Melda Altikatoğlu Yapaöz
Investigation Of Antibacterial And Photocatalytic Efficiency Of Green Zno Nanoparticles That Synthesized With Celosia Cristata Flower Extract, Mahmure Özgür, Özgür Duygulu, Melda Altikatoğlu Yapaöz
Turkish Journal of Chemistry
Increasing interest in green chemistry has led scientists to an environmentally friendly nanoparticle synthesis approach that has many advantages, such as simple, affordable and versatility for a wide range of commercial production. In this study, green synthesis of zinc oxide nanoparticles (ZnO NPs), which is widely researched in the field of nanotechnology, was performed under different conditions (volume ratio of CC flower extract to Zn(CH3COO)2 solution, time, pH and temperature) using the aqueous extract of Amarant (Celosia cristata L., CC, cockscome) plant flowers. Produced ZnO NPs were characterized by UV-Vis absorption spectroscopy, Fourier transform infrared spectroscopy (FTIR), high-resolution transmission electron …
Investigation Of Biological Activities Of Plant Extract And Green Synthesis Silvernanoparticles Obtained From Gilaburu (Viburnum Opulus L.) Fruits, Bi̇rgütay Şahi̇n, Ali̇ Savaş Bülbül, İbrahi̇m Seyfetti̇n Çeli̇k, Nesri̇n Korkmaz, Ahmet Karadağ
Investigation Of Biological Activities Of Plant Extract And Green Synthesis Silvernanoparticles Obtained From Gilaburu (Viburnum Opulus L.) Fruits, Bi̇rgütay Şahi̇n, Ali̇ Savaş Bülbül, İbrahi̇m Seyfetti̇n Çeli̇k, Nesri̇n Korkmaz, Ahmet Karadağ
Turkish Journal of Chemistry
In this study, biological activities of silver nanoparticles (AgNP) synthesized by green synthesis method using the fruit extract of Gilaburu (Viburnum opulus L.) plant were investigated. The characterization of the synthesized AgNPs was performed by ultraviolet visible region spectroscopy (UV-Vis), Fourier transform - infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray diffraction (XRD) techniques. The crystal size was found to be 52.32 nm when the XRD data were calculated with the Debye- Scherrer's equation. The antimicrobial activities of extract and AgNPs were investigated by microdilution and disk diffusion methods. Antibiofilm activities were examined by the crystal violet technique. The …
Green Synthesis, Characterisation Of Au And Ag Nanoparticles By Various Bioextracts And Their Usability At Graphite Electrode Modification, Emi̇ne Arslan, Ender Bi̇çer, Eli̇f Sekmen, Semi̇ha Çakir
Green Synthesis, Characterisation Of Au And Ag Nanoparticles By Various Bioextracts And Their Usability At Graphite Electrode Modification, Emi̇ne Arslan, Ender Bi̇çer, Eli̇f Sekmen, Semi̇ha Çakir
Turkish Journal of Chemistry
In this study, the biosynthesis of Au and Ag nanoparticles (AuNp and AgNp) with a green chemistry approach was performed by using bioextracts of various fruits and vegetables (Lycopersicon esculentum (LE), Cucumis sativus (CS), Malus domestica (MD), Cucurbita pepo (CP), Apiumgraveolens var. rapaceum (AVR), Prunus cerasifera (PC), Oleraceae var. botrytis (OVB)). In the determination of optimum experimental conditions, the parameters such as the type and concentration of bioextract, concentration of metal ion solutions, the ratio of metal ion solution to bioextract, pH, reaction time and temperature were found to be significant. The characterisation of AuNp and AgNp synthesized by providing …
Synthesis Of Titanium Dioxide Nanoparticles With Renewable Resources And Their Applications: Review, Umut Şafak Öztürk, Ali̇me Çitak
Synthesis Of Titanium Dioxide Nanoparticles With Renewable Resources And Their Applications: Review, Umut Şafak Öztürk, Ali̇me Çitak
Turkish Journal of Chemistry
Metal-oxide nanoparticles have reached a wide range of applications in the last ten years. Titanium dioxide nanoparticles stand out with their unique crystal structure and near-perfect physical and chemical properties at nanoscales (crystal size between 10-100 nm). It has created many applications with its white pigment, semiconductor state, and effective photocatalytic properties, but the synthesis of these nanoparticles is very damaging to nature. Titanium dioxide nanoparticles, which can be synthesized with toxic solvents or high-energy machines, have started to be synthesized by the green synthesis method, which has been a cheap and easy method in recent years. The application areas …
A Four-Component Modified Biginelli Reaction: A Novel Approach For C-2 Functionalizeddihydropyrimidines, Harsha Narkhede, Avinash Dhake, Vaidhyanathan Balasubramaniyan
A Four-Component Modified Biginelli Reaction: A Novel Approach For C-2 Functionalizeddihydropyrimidines, Harsha Narkhede, Avinash Dhake, Vaidhyanathan Balasubramaniyan
Turkish Journal of Chemistry
A novel four component modified Biginelli reaction for the synthesis of C-2 functionalized dihydropyrimidines has been established. The approach uses assembly of less explored acetyl acetone with aromatic aldehyde, thiourea, and dimethyl sulphate to construct a novel 5-acetyl 2-methylthio dihydropyrimidine system, which works as an efficient well-designed intermediate for generating C-2 modified Biginelli libraries with nitrogen nucleophiles. Phenyl hydrazine, semicarbazide, and aryl semicarbazides are successfully used as N-nucleophiles to generate C-2 functionalized dihydropyrimidine derivatives, which fulfil the demands of active pharmacophore. Time economy, step economy, and a single pot reaction with moderate to excellent yield are the major advantages of …
Green Biosynthesis, Characterization, And Cytotoxic Effect Of Magnetic Iron Nanoparticles Using Brassica Oleracea Var Capitata Sub Var Rubra (Red Cabbage) Aqueous Peel Extract, Ömer Erdoğan, Sali̇h Paşa, Gülen Meli̇ke Demi̇rbolat, Özge Çevi̇k
Green Biosynthesis, Characterization, And Cytotoxic Effect Of Magnetic Iron Nanoparticles Using Brassica Oleracea Var Capitata Sub Var Rubra (Red Cabbage) Aqueous Peel Extract, Ömer Erdoğan, Sali̇h Paşa, Gülen Meli̇ke Demi̇rbolat, Özge Çevi̇k
Turkish Journal of Chemistry
The green method of nanoparticle synthesis, which is an environment and living-friendly method, is an updated subject that has appeared as an alternative to conventional methods such as physical and chemical synthesis. In this presented study, the green synthesis of magnetic iron oxide nanoparticles (IONPs) from iron (III) chloride by using Brassica oleracea var. capitata sub.var. rubra aqueous peel extract has been reported. The prepared IONPs were characterized with fourier-transform infrared spectroscopy (FT-IR), ultraviolet-visible spectroscopy (UV-VIS), zeta potential, scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX). The cytotoxic effects of IONPs on MCF-7 breast cancer cell line were studied …
Preparation Of G-Cuo Nps And G-Zno Nps With Mallow Leaves, Investigation Of Theirantibacterial Behavior And Synthesis Of Bis(Indolyl)Methane Compounds Under Solventfreemicrowave Assisted Dry Milling Conditions Using G-Cuo Nps As A Catalyst, Mi̇ne Sulak
Turkish Journal of Chemistry
In this study, biogenic copper and zinc oxide nanoparticles (G-ZnONPs and G-CuONPs) were synthesized by the green synthesis method using Malva parviflora L. (Millow) leaf extract and the obtained nanoparticles were characterized in detail with UVVis, FTIR, SEM, XRD. The antibacterial properties of the synthesized nanoparticles on gram-positive and gram-negative bacteria were investigated and it was found that the nanoparticles had high antimicrobial activity in the results of the experiments. With the obtained G-CuONPs, the synthesis of bis(indolyl)methanes with the "green" one-pot synthesis using microwave was achieved quickly and with high efficiency, and the thermal behavior of the obtained products …
Study On Potential Applications And Toxicity Analysis Of Green Synthesized Nanoparticles, Rajni Garg, Priya Rani, Rishav Garg, Nnabuk Okon Eddy
Study On Potential Applications And Toxicity Analysis Of Green Synthesized Nanoparticles, Rajni Garg, Priya Rani, Rishav Garg, Nnabuk Okon Eddy
Turkish Journal of Chemistry
Nanomaterials have garnered the significant interest of scientists owing to their technological as well as medical applications. In particular, metal and metal oxide nanoparticles have gained prominence because of their enhanced performance as compared to their bulk counterparts. Metal-supported nanomaterials are anticipated to make major contributions to solving today's most challenging issues, like energy harvesting and environmental remediation. The incorporation of nanoparticles into sensors has significantly enhanced their precision and selectivity. With the advent of green chemistry, green synthetic techniques have been prioritized for the synthesis of single and multicomponent nanomaterials. In the current review, we have addressed the multidimensional …
Design, Synthesis, And Antitumor Evaluation Of Novel Methylene Moiety-Tethered Tetrahydroquinoline Derivatives, Esaam Hamied Ahmed Hanashalshahaby, Canan Ünaleroğlu, Ayşe Ak Can, Alp Özgün, Bora Gari̇pcan
Design, Synthesis, And Antitumor Evaluation Of Novel Methylene Moiety-Tethered Tetrahydroquinoline Derivatives, Esaam Hamied Ahmed Hanashalshahaby, Canan Ünaleroğlu, Ayşe Ak Can, Alp Özgün, Bora Gari̇pcan
Turkish Journal of Chemistry
Novel methylene-tethered tetrahydroquinolines (THQs) and cyclopenta[$b$]pyridines were synthesized by one-pot multicomponent reactions of Mannich bases, enolizable ketones, and NH$_{4}$OAc in water by an environmentally friendly K-10 montmorillonite clay-catalyzed reaction. The cytotoxic activities of 1-(2-methyl-8-methylene-5,6,7,8-tetrahydroquinolin-3-yl)ethanone (9a), ethyl 2-methyl-8-methylene-5,6,7,8-tetrahydroquinoline-3 carboxylate (9b), and 1-(2-methyl-7-methylene-6,7-dihydro-5$H$-cyclopenta[$b$]pyridin-3-yl)ethanone (11a) were tested against rat glioblastoma (C6), human breast cancer (MCF-7), prostate cancer (PC3), neuroblastoma (SH-SY5Y), and mouse fibroblast (L929) cell lines in a concentration-dependent (50-300 μM) and time-dependent (24-72 h) manner and expressed as IC$_{50\, }$values. The results showed that compound 9a induced the lowest IC$_{50\, }$values in all cell lines ranging from 111 ± 1.1 μM to …
Green And Efficient Synthesis Of Novel Bispyrazoles Through A Tandem Knoevenagel And Michael Type Reaction Using Nanowire Zinc Oxide As A Powerful And Recyclable Catalyst, Khalil Eskandari, Bahador Karami, Saeed Khodabakhshi, Seyyed Jafar Hoseini
Green And Efficient Synthesis Of Novel Bispyrazoles Through A Tandem Knoevenagel And Michael Type Reaction Using Nanowire Zinc Oxide As A Powerful And Recyclable Catalyst, Khalil Eskandari, Bahador Karami, Saeed Khodabakhshi, Seyyed Jafar Hoseini
Turkish Journal of Chemistry
Zinc oxide nanowires (ZnO NWs) were prepared and characterized by scanning electron microscopy, powder X-ray diffraction, and transmission electron microscopy analyses. ZnO NWs were then employed as heterogeneous and recyclable catalyst for green synthesis of some new and known bispyrazole derivatives through a tandem Knoevenagel and Michael type addition reaction of aromatic aldehyde and pyrazolone. The synthetic method is operationally simple and affords product with high yields in short reaction times.
Green Synthesis Of Fe_3o_4 Nanoparticles By One-Pot Saccharide-Assisted Hydrothermal Method, Ayşe Demi̇r, Abdulhadi̇ Baykal, Hüseyi̇n Sözeri̇
Green Synthesis Of Fe_3o_4 Nanoparticles By One-Pot Saccharide-Assisted Hydrothermal Method, Ayşe Demi̇r, Abdulhadi̇ Baykal, Hüseyi̇n Sözeri̇
Turkish Journal of Chemistry
A saccharide-assisted hydrothermal route starting from a single iron precursor was employed to study the influence of reducing saccharides on the formation of iron oxide (Fe_3O_4) nanoparticles (NPs). Fe_3O_4 NPs, which were confirmed by X-ray diffraction analysis, were successfully synthesized by a hydrothermal method in which mannose, maltose, lactose, and galactose served as reducing agents. The formation of Fe_3O_4 NPs was also confirmed by Fourier transform infrared spectroscopy. Samples exhibited different crystallite sizes estimated based on line profile fitting as 12 \pm 2, 9 \pm 2, 13 \pm 3, and 9 \pm 3 nm for mannose, maltose, lactose, and galactose, …