A modified electrode was developed for the electrochemical sensing of dobutamine (DBT), one of the catecholamines. For this modification process, pencil graphite electrodes (PGE) were modified with over-oxidized nanofiber structured poly (3,4-ethylenedioxythiophene) (PGE/OPEDOTNF) by electropolymerization. The electrochemical performance of PGE/OPEDOTNF was evaluated by cyclic and differential pulse voltammetry. In addition, the performances of non-nanofiber PEDOT-modified PGE electrodes were also examined for comparison. The characterization of the modified electrodes was carried out by scanning electron microscopy and electrochemical methods. The signal of the modified electrodes was observed in a linear range of 0.1-2.0 µM against DBT using the differential pulse voltammetry method. The limit of detection and quantification are calculated as 0.026 µM and 0.086 µM, respectively. The effect of the interfering species was examined. It has been shown that DBT can be detected sensitively and selectively using pencil graphite electrodes modified with nanofiber-structured poly(3,4-ethylenedioxythiophene). The repeatability of PGE/OPEDOTNF electrodes was found to be 5.2%. PGE/OPEDOTNF electrodes remained stable for 15 days without losing their electrochemical activity.
{"title":"Voltammetric performance of nanofiber structured over-oxidized poly(3,4-ethylenedioxythiophene) modified pencil graphite electrodes for dobutamine sensing","authors":"Ayşegül Özbek, L. Özcan","doi":"10.18596/jotcsa.1306564","DOIUrl":"https://doi.org/10.18596/jotcsa.1306564","url":null,"abstract":"A modified electrode was developed for the electrochemical sensing of dobutamine (DBT), one of the catecholamines. For this modification process, pencil graphite electrodes (PGE) were modified with over-oxidized nanofiber structured poly (3,4-ethylenedioxythiophene) (PGE/OPEDOTNF) by electropolymerization. The electrochemical performance of PGE/OPEDOTNF was evaluated by cyclic and differential pulse voltammetry. In addition, the performances of non-nanofiber PEDOT-modified PGE electrodes were also examined for comparison. The characterization of the modified electrodes was carried out by scanning electron microscopy and electrochemical methods. The signal of the modified electrodes was observed in a linear range of 0.1-2.0 µM against DBT using the differential pulse voltammetry method. The limit of detection and quantification are calculated as 0.026 µM and 0.086 µM, respectively. The effect of the interfering species was examined. It has been shown that DBT can be detected sensitively and selectively using pencil graphite electrodes modified with nanofiber-structured poly(3,4-ethylenedioxythiophene). The repeatability of PGE/OPEDOTNF electrodes was found to be 5.2%. PGE/OPEDOTNF electrodes remained stable for 15 days without losing their electrochemical activity.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139335577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The study on Corrosion Inhibition of 1100-H14 Aluminum in H2SO4 Acidic Deploying pyrantrin as a Green Inhibitor was investigated by adopting different experimental methods, including weight loss, electrochemical impedance spectroscopic, potentiodynamic polarization, and computational methods. It was observed that pyrantrin was a good inhibitor for the 1100–H14–type aluminum. Inhibition efficiency was recorded between 42.5 % and 95.2 % for aluminum at 500 ppm and 1500 ppm concentrations. This high inhibition efficiency was attributed to the strong adsorption of the molecules on both metal surfaces. Electrochemical impedance showed higher and increasing charge transfer resistance values and decreasing values for the double-layer capacitance, indicating better inhibition. From quantum calculations, the EHOMO value was higher than that of the ELUMO, while the energy gap was calculated to be 1.9 with a binding energy of 132.9, indicating stronger adsorption and inhibition.
{"title":"DFT and Electrochemical Study of Novel Green Corrosion Inhibitor (Pyrantrin) for 1100-H14 Aluminum Corrosion Remediation in 1 M H2SO4 Acidic Environment","authors":"B. Ugi","doi":"10.18596/jotcsa.1234194","DOIUrl":"https://doi.org/10.18596/jotcsa.1234194","url":null,"abstract":"The study on Corrosion Inhibition of 1100-H14 Aluminum in H2SO4 Acidic Deploying pyrantrin as a Green Inhibitor was investigated by adopting different experimental methods, including weight loss, electrochemical impedance spectroscopic, potentiodynamic polarization, and computational methods. It was observed that pyrantrin was a good inhibitor for the 1100–H14–type aluminum. Inhibition efficiency was recorded between 42.5 % and 95.2 % for aluminum at 500 ppm and 1500 ppm concentrations. This high inhibition efficiency was attributed to the strong adsorption of the molecules on both metal surfaces. Electrochemical impedance showed higher and increasing charge transfer resistance values and decreasing values for the double-layer capacitance, indicating better inhibition. From quantum calculations, the EHOMO value was higher than that of the ELUMO, while the energy gap was calculated to be 1.9 with a binding energy of 132.9, indicating stronger adsorption and inhibition.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139347790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this research, the modification of carbon paste electrode (CPE) using dibenzo 18-crown-6 was carried out to detect Pb level in carrot. The purpose of this electrode modification is to increase the sensitivity of the measurement. The optimized parameters were scan rate, composition of dibenzo 18-crown-6 in carbon paste, and supporting electrolyte. Measurements were validated by determining the linear concentration range, detection limit (LoD), quantification limit (LoQ), repeatability, selectivity, and recovery. At the best measurement conditions, the modified CPE (CPE-Dbc) was applied to determine Pb in carrot. The optimum measurements conditions were obtained the optimum concentration of crown ether in carbon paste was 0.8%, the scan rate using CPE at 15 mV/s, increased to 20 mV/s, and H2SO4 solution as supporting electrolyte. The linear concentration was found in the range of 5-100 µg/L using CPE and became wider to 5-2000 µg/L using CPE-Dbc. The values of LoD and LoQ measurement using CPE were 0,3575 µg/L and 0,3583 µg/L, and decreased to 0,1265 µg/L and 0,1266 µg/L using CPE-Dbc. CPE and CPE-Dbc had good precision with Horwitz ratio values were 0,2231 and 0,2183, which is smaller than two. The percentage of recovery of Pb in the mixture of standard and sample solutions was (88,97 ± 2,76)%. The presence of Cu, Cd and Na in the solution did not interfere the measurement of Pb. The concentration of Pb in carrot sample was (1,8423 ± 0,0002) mg/kg, which was higher than the acceptable concentration according to SNI No. 7387:2009, which is 0,5 mg/kg.
{"title":"Carbon Paste Electrode Modified by Dibenzo 18-crown-6 for the Determination of Pb in Carrot Using Differential Pulse Voltammetry","authors":"Irdhawati Irdhawati, Ayu Jyostosya Yotirani Arya Wijana, Emmy Sahara, Manuntun Manurung","doi":"10.18596/jotcsa.1120078","DOIUrl":"https://doi.org/10.18596/jotcsa.1120078","url":null,"abstract":"In this research, the modification of carbon paste electrode (CPE) using dibenzo 18-crown-6 was carried out to detect Pb level in carrot. The purpose of this electrode modification is to increase the sensitivity of the measurement. The optimized parameters were scan rate, composition of dibenzo 18-crown-6 in carbon paste, and supporting electrolyte. Measurements were validated by determining the linear concentration range, detection limit (LoD), quantification limit (LoQ), repeatability, selectivity, and recovery. At the best measurement conditions, the modified CPE (CPE-Dbc) was applied to determine Pb in carrot. The optimum measurements conditions were obtained the optimum concentration of crown ether in carbon paste was 0.8%, the scan rate using CPE at 15 mV/s, increased to 20 mV/s, and H2SO4 solution as supporting electrolyte. The linear concentration was found in the range of 5-100 µg/L using CPE and became wider to 5-2000 µg/L using CPE-Dbc. The values of LoD and LoQ measurement using CPE were 0,3575 µg/L and 0,3583 µg/L, and decreased to 0,1265 µg/L and 0,1266 µg/L using CPE-Dbc. CPE and CPE-Dbc had good precision with Horwitz ratio values were 0,2231 and 0,2183, which is smaller than two. The percentage of recovery of Pb in the mixture of standard and sample solutions was (88,97 ± 2,76)%. The presence of Cu, Cd and Na in the solution did not interfere the measurement of Pb. The concentration of Pb in carrot sample was (1,8423 ± 0,0002) mg/kg, which was higher than the acceptable concentration according to SNI No. 7387:2009, which is 0,5 mg/kg.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79378379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bedriye Seda KURŞUN AKTAR, Abdulraheem Mustafa Alkarabash, A. ŞAHİN YAĞLIOĞLU, E. E. Oruç-Emre
In this study, the synthesis of chalcone compounds (1-11) derived from 4-(imidazol-1-yl)acetophenone and the structure determination of these compounds by various spectroscopic methods were carried out. The anticancer activities of compounds 1-11 were examined against HeLa and PC-3 cancer cells at four different concentrations (100, 50, 25, and 5 µM) using the BrdU ELISA assay. It was determined that all molecules except compounds 1 and 6 in HeLa cancer cells and compounds 2 and 8 against PC-3 cancer cells were more active against HeLa and PC-3 than the standard drug 5-fluorouracil (5-FU). The best activity against PC-3 cancer cells was compound 4 (IC50: 1.39±0.00 µM). In addition, compound 11 (IC50: 1.58±0.01 µM) was found to have the highest activity against HeLa cancer cells. Compound 4 against PC-3 cancer cell and compound 11 against HeLa cancer cell displayed cell selective activity. The ADME properties and drug similarities of the molecules 1-11 using the SwissADME software were investigated. According to these properties, compounds 1-11 were found to obey Lipinski rules.
{"title":"Synthesis, Antiproliferative Activity and In Silico Studies of Chalcones Derived From 4-(Imidazole-1-yl)Acetophenone","authors":"Bedriye Seda KURŞUN AKTAR, Abdulraheem Mustafa Alkarabash, A. ŞAHİN YAĞLIOĞLU, E. E. Oruç-Emre","doi":"10.18596/jotcsa.1313595","DOIUrl":"https://doi.org/10.18596/jotcsa.1313595","url":null,"abstract":"In this study, the synthesis of chalcone compounds (1-11) derived from 4-(imidazol-1-yl)acetophenone and the structure determination of these compounds by various spectroscopic methods were carried out. The anticancer activities of compounds 1-11 were examined against HeLa and PC-3 cancer cells at four different concentrations (100, 50, 25, and 5 µM) using the BrdU ELISA assay. It was determined that all molecules except compounds 1 and 6 in HeLa cancer cells and compounds 2 and 8 against PC-3 cancer cells were more active against HeLa and PC-3 than the standard drug 5-fluorouracil (5-FU). The best activity against PC-3 cancer cells was compound 4 (IC50: 1.39±0.00 µM). In addition, compound 11 (IC50: 1.58±0.01 µM) was found to have the highest activity against HeLa cancer cells. Compound 4 against PC-3 cancer cell and compound 11 against HeLa cancer cell displayed cell selective activity. The ADME properties and drug similarities of the molecules 1-11 using the SwissADME software were investigated. According to these properties, compounds 1-11 were found to obey Lipinski rules.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77252864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Star polymers are known for their different structural and functional properties. Depending on their structure, they may display a wide range of characteristics. Star polymers can be synthesized using either a core-first or arm-first strategy. Numerous synthetic approaches can be used in both cases. In this work, 3- and 4-arm star polymers were prepared via the metal-free azide-alkyne click reaction. Trifunctional and tetrafunctional propiolate (acetylenecarboxylate) ester-containing cores were prepared and then subjected to a metal-free azide-alkyne reaction with azide end-functionalized PEG (PEG-N3) to yield A3 and A4-type star polymers, respectively. All the structures were characterized using 1H and 13C NMR spectroscopy and GPC.
{"title":"3- and 4-Arm Star Polymers (PEG3 and PEG4) via Metal-Free Azide-Alkyne Click Reaction","authors":"U. Günay","doi":"10.18596/jotcsa.1324025","DOIUrl":"https://doi.org/10.18596/jotcsa.1324025","url":null,"abstract":"Star polymers are known for their different structural and functional properties. Depending on their structure, they may display a wide range of characteristics. Star polymers can be synthesized using either a core-first or arm-first strategy. Numerous synthetic approaches can be used in both cases. In this work, 3- and 4-arm star polymers were prepared via the metal-free azide-alkyne click reaction. Trifunctional and tetrafunctional propiolate (acetylenecarboxylate) ester-containing cores were prepared and then subjected to a metal-free azide-alkyne reaction with azide end-functionalized PEG (PEG-N3) to yield A3 and A4-type star polymers, respectively. All the structures were characterized using 1H and 13C NMR spectroscopy and GPC.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86330758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The green synthesis method synthesized the bismuth oxide and lead-doped bismuth oxide nanoparticles using Ferula Asafoetida leaves extract. The lead-doped bismuth oxide showed greater degradation efficiency than undoped bismuth oxide. This greater efficiency was due to decreases in the band gap energy between the valence band and the conduction band of the metal oxide and reduced the chances of electron-hole pair recombination with the metal oxide catalyst. The synthesized nanoparticles were characterized by TGA, SEM, FT-IR, EDX, XRD, and UV- visible Spectrometer. XRD diffraction of Bi2O3 nanoparticles reflected a strong and sharp peak at 32.8˚ shows that Bi2O3 nanoparticles are in crystalline phase. The crystallite size of Bi2O3 nanoparticles is 13.433 nm, and Pb-doped Bi2O3 is 9.6 nm, calculated from the Debye-Scherrer equation. The synthesized Bi2O3 nanoparticles are round in shape with average size of ~ 90-100 nm While Pb doped Bi2O3 is ~ 75 f- 100 nm. The EDX spectra showed no additional peak for any impurities. The degradation rate of Malachite Green dye (MG) increased with the increase in contact time and temperature, while it decreased with increasing dye initial concentration and pH. Initially, the degradation efficiency of the bismuth oxide catalyst is increased with increasing catalyst amount, but after a certain amount of catalyst, it started decreasing as the catalyst amount was further increased. The irradiation time on photodegradation is deliberate, keeping other parameters steady at catalyst quantity 0.01 g at specific reaction conditions. Moreover, the dye showed an increase in degradation at 50 oC. The utmost degradation of 92% was observed for lead-doped bismuth oxide (Bi2O3) and 76% for undoped bismuth oxide (Bi2O3).
{"title":"Synthesis and Photodegradation of Bi2O3 and Pb-Bi2O3 Nanoparticles and Their Kinetic Study","authors":"Farzana Hai̇der, Zakia Gul, Kafeel AHMAD KHAN","doi":"10.18596/jotcsa.1164065","DOIUrl":"https://doi.org/10.18596/jotcsa.1164065","url":null,"abstract":"The green synthesis method synthesized the bismuth oxide and lead-doped bismuth oxide nanoparticles using Ferula Asafoetida leaves extract. The lead-doped bismuth oxide showed greater degradation efficiency than undoped bismuth oxide. This greater efficiency was due to decreases in the band gap energy between the valence band and the conduction band of the metal oxide and reduced the chances of electron-hole pair recombination with the metal oxide catalyst. The synthesized nanoparticles were characterized by TGA, SEM, FT-IR, EDX, XRD, and UV- visible Spectrometer. XRD diffraction of Bi2O3 nanoparticles reflected a strong and sharp peak at 32.8˚ shows that Bi2O3 nanoparticles are in crystalline phase. The crystallite size of Bi2O3 nanoparticles is 13.433 nm, and Pb-doped Bi2O3 is 9.6 nm, calculated from the Debye-Scherrer equation. The synthesized Bi2O3 nanoparticles are round in shape with average size of ~ 90-100 nm While Pb doped Bi2O3 is ~ 75 f- 100 nm. The EDX spectra showed no additional peak for any impurities. The degradation rate of Malachite Green dye (MG) increased with the increase in contact time and temperature, while it decreased with increasing dye initial concentration and pH. Initially, the degradation efficiency of the bismuth oxide catalyst is increased with increasing catalyst amount, but after a certain amount of catalyst, it started decreasing as the catalyst amount was further increased. The irradiation time on photodegradation is deliberate, keeping other parameters steady at catalyst quantity 0.01 g at specific reaction conditions. Moreover, the dye showed an increase in degradation at 50 oC. The utmost degradation of 92% was observed for lead-doped bismuth oxide (Bi2O3) and 76% for undoped bismuth oxide (Bi2O3).","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139355334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this work, the number of hydration of ions (K+ and Cl-, K+ and Br-, K+ and I-, H+ and Cl-, Li+ and Cl-, Cs+ and Cl-, Na+ and Cl-) in dilute aqueous solutions of some electrolytes of KCl, KBr, KI, HCl, LiCl, CsCl, and NaCl was studied by the proposed refractometric method. Further, the effect of polyethylene glycol (PEG-6000) on the hydration processes for ions in aqueous solutions of KCl and KBr was studied. It turned out that when the polymer is introduced into the solution, the hydration numbers of ions decrease, which is apparently due to the role of the PEG oxygen atom competing with ions in interaction with water molecules.
{"title":"Hydration Processes in HCl and Aqueous Salt Solutions","authors":"Gunel Shahbazova, E. A. Masimov","doi":"10.18596/jotcsa.1201298","DOIUrl":"https://doi.org/10.18596/jotcsa.1201298","url":null,"abstract":"In this work, the number of hydration of ions (K+ and Cl-, K+ and Br-, K+ and I-, H+ and Cl-, Li+ and Cl-, Cs+ and Cl-, Na+ and Cl-) in dilute aqueous solutions of some electrolytes of KCl, KBr, KI, HCl, LiCl, CsCl, and NaCl was studied by the proposed refractometric method. Further, the effect of polyethylene glycol (PEG-6000) on the hydration processes for ions in aqueous solutions of KCl and KBr was studied. It turned out that when the polymer is introduced into the solution, the hydration numbers of ions decrease, which is apparently due to the role of the PEG oxygen atom competing with ions in interaction with water molecules.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84524245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
3-Hydroxypyridinium and 3-(hydroxymethyl)pyridinium O-terpenyl aryldithiophosphonates were obtained by the reactions of 3-hydroxypyridine and 3-(hydroxymethyl)pyridine with O-terpenyl aryldithiophosphonic acids on the basis of (1R,2S,5R)-(−)-menthol, (1S)-endo-(–)-borneol, racemic isoborneol, and carvacrol. The obtained salts possess high antimicrobial activity against Bacillus cereus and Candida albicans.
{"title":"3-Hydroxypyridine and 3-(Hydroxymethyl)pyridine in the Synthesis of Salts of Aryldithiophosphonic Acids on the Basis of Monoterpenyl Alcohols","authors":"I. Nizamov, A. Yakovlev, I. Nizamov, M. Shulaeva","doi":"10.18596/jotcsa.1290931","DOIUrl":"https://doi.org/10.18596/jotcsa.1290931","url":null,"abstract":"3-Hydroxypyridinium and 3-(hydroxymethyl)pyridinium O-terpenyl aryldithiophosphonates were obtained by the reactions of 3-hydroxypyridine and 3-(hydroxymethyl)pyridine with O-terpenyl aryldithiophosphonic acids on the basis of (1R,2S,5R)-(−)-menthol, (1S)-endo-(–)-borneol, racemic isoborneol, and carvacrol. The obtained salts possess high antimicrobial activity against Bacillus cereus and Candida albicans.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139357133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Morus nigra L. is a biologically important plant. In addition to the biological importance of the extracts obtained from its various parts, it is used as a material in various fields. In this work, dyeing properties of the cotton fabrics and the wool yarns with Morus nigra L. leaf extracts were investigated. In dyeing studies using Morus nigra L. leaf extracts, yellow tones were obtained in dyeing cotton fabrics, and green and yellow tones were obtained in dyeing wool yarns. Washing, rubbing and light fastness of dyed textile products were examined. According to the results, cotton fabrics showed better dyeing potential than wool yarns. As a result, Morus nigra L. leaf can be used as a natural dyeing agent in the dyeing of textile products.
{"title":"Eco-friendly dyeing of fabric and wool yarn samples with Morus nigra leaf extracts","authors":"Adem Önal, Oguz Özbek, Pakize Düzgün, Sama Nached","doi":"10.18596/jotcsa.1286585","DOIUrl":"https://doi.org/10.18596/jotcsa.1286585","url":null,"abstract":"Morus nigra L. is a biologically important plant. In addition to the biological importance of the extracts obtained from its various parts, it is used as a material in various fields. In this work, dyeing properties of the cotton fabrics and the wool yarns with Morus nigra L. leaf extracts were investigated. In dyeing studies using Morus nigra L. leaf extracts, yellow tones were obtained in dyeing cotton fabrics, and green and yellow tones were obtained in dyeing wool yarns. Washing, rubbing and light fastness of dyed textile products were examined. According to the results, cotton fabrics showed better dyeing potential than wool yarns. As a result, Morus nigra L. leaf can be used as a natural dyeing agent in the dyeing of textile products.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76125284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mothana Ghazi Kadhim AlFalah, Ahmed Elid, Amgad Ahmed ABDO ALİ, E. Kamberli, Bahar Nazli, Sevilay Koyun, Alihan Tosun, Muhammed Kadi̇rli̇oğlu, Fatma Elkassum, Saleh Quddus Saleh, Abdulrahman Obied, Fatma Kandemi̇rli̇
Corrosion poses a significant challenge for numerous industries. The use of corrosion inhibitors is essential within these industries. The efficacy of environmentally friendly corrosion inhibitors should remain high even when used at low concentrations. In the present study, the compound 4- fluorophenyl-2,5- dithiohydrazodicarbonamide (FTSC) was used as a corrosion inhibitor for brass in 3.5% NaCl solution. The inhibitor efficiency was determined by using a series of electrochemical techniques such as open circuit potential (OCP), potential dynamic polarisation (PDP), linear polarisation resistance (LPR), and electrochemical impedance spectroscopy (EIS). All experimental tests have been done in stagnant conditions. The findings of the experiments revealed that the compound FTSC looked to be of the cathodic type. Furthermore, the maximum inhibitor efficiency was reached at 98.28% at 1 × 10-3 and at an immersion time of 1 h. The current density was reduced from 16.5 to 0.284 A.cm-2. The adsorption of compound on the brass surface in 3.5% NaCl solution obeyed the Langmuir isotherm with a low negative value of the standard Gibbs free energy of adsorption (-33.8 kJ/mol ΔGads (chemisorption and physisorption). The results confirmed that the compound FTSC can be used as a corrosion inhibitor for brass in 3.5% NaCl.
{"title":"Improvement of corrosion resistance for brass in 3.5% NaCl media by using 4- fluorophenyl-2, 5-dithiohydrazodicarbonamide","authors":"Mothana Ghazi Kadhim AlFalah, Ahmed Elid, Amgad Ahmed ABDO ALİ, E. Kamberli, Bahar Nazli, Sevilay Koyun, Alihan Tosun, Muhammed Kadi̇rli̇oğlu, Fatma Elkassum, Saleh Quddus Saleh, Abdulrahman Obied, Fatma Kandemi̇rli̇","doi":"10.18596/jotcsa.1268115","DOIUrl":"https://doi.org/10.18596/jotcsa.1268115","url":null,"abstract":"Corrosion poses a significant challenge for numerous industries. The use of corrosion inhibitors is essential within these industries. The efficacy of environmentally friendly corrosion inhibitors should remain high even when used at low concentrations. In the present study, the compound 4- fluorophenyl-2,5- dithiohydrazodicarbonamide (FTSC) was used as a corrosion inhibitor for brass in 3.5% NaCl solution. The inhibitor efficiency was determined by using a series of electrochemical techniques such as open circuit potential (OCP), potential dynamic polarisation (PDP), linear polarisation resistance (LPR), and electrochemical impedance spectroscopy (EIS). All experimental tests have been done in stagnant conditions. The findings of the experiments revealed that the compound FTSC looked to be of the cathodic type. Furthermore, the maximum inhibitor efficiency was reached at 98.28% at 1 × 10-3 and at an immersion time of 1 h. The current density was reduced from 16.5 to 0.284 A.cm-2. The adsorption of compound on the brass surface in 3.5% NaCl solution obeyed the Langmuir isotherm with a low negative value of the standard Gibbs free energy of adsorption (-33.8 kJ/mol ΔGads (chemisorption and physisorption). The results confirmed that the compound FTSC can be used as a corrosion inhibitor for brass in 3.5% NaCl.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80695901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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