prikaz prve stranice dokumenta Zelena sinteza koloidnog srebra kemijskim taloženjem pomoću različitih prirodnih reducensa
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master's thesis
Zelena sinteza koloidnog srebra kemijskim taloženjem pomoću različitih prirodnih reducensa
diplomski rad
Split: University of Split, Faculty of Chemistry and Technology, 2020. urn:nbn:hr:167:137519
Ramljak, Anja
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

Institutional repository: Repository of the Faculty of chemistry and technology

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Ramljak, A. (2020). Zelena sinteza koloidnog srebra kemijskim taloženjem pomoću različitih prirodnih reducensa : diplomski rad (Master's thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:137519

Ramljak, Anja. "Zelena sinteza koloidnog srebra kemijskim taloženjem pomoću različitih prirodnih reducensa : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:167:137519

Ramljak, Anja. "Zelena sinteza koloidnog srebra kemijskim taloženjem pomoću različitih prirodnih reducensa : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:167:137519

Ramljak, A. (2020). 'Zelena sinteza koloidnog srebra kemijskim taloženjem pomoću različitih prirodnih reducensa : diplomski rad', Master's thesis, University of Split, Faculty of Chemistry and Technology, accessed 13 March 2025, https://urn.nsk.hr/urn:nbn:hr:167:137519

Ramljak A. Zelena sinteza koloidnog srebra kemijskim taloženjem pomoću različitih prirodnih reducensa : diplomski rad [Master's thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2020 [cited 2025 March 13] Available at: https://urn.nsk.hr/urn:nbn:hr:167:137519

A. Ramljak, "Zelena sinteza koloidnog srebra kemijskim taloženjem pomoću različitih prirodnih reducensa : diplomski rad", Master's thesis, University of Split, Faculty of Chemistry and Technology, Split, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:167:137519

Metadata
TitleZelena sinteza koloidnog srebra kemijskim taloženjem pomoću različitih prirodnih reducensa : diplomski rad
Title (english)Green synthesis of colloidal silver with chemical deposition by different natural reducens : diploma thesis
AuthorAnja Ramljak
MentorDamir Barbir (mentor)
MBZ: 307703
Committee memberPero Dabić (predsjednik povjerenstva)
Committee memberJelena Jakić (član povjerenstva)
Committee memberDamir Barbir (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2020-01-24, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U ovom radu provedena je sinteza koloidnog srebra uz trinatrijev citrat dihidrat i askorbinsku kiselinu kao odgovarajuće reducense. Na osnovu dobivenih UV-Vis pikova, procijenjena je veličina koloidnih čestica te se zaključilo koji uvjeti su najpogodniji za sintezu uz odgovarajuće redukcijsko sredstvo. Pripremljene su standardne otopine 0,001 M AgNO 3 i 0,002 M NaBH 4 , te otopine srebrovog nitrata i trinatrijevog citrata dihidrata u koncentracijama 0,010 M,... More 0,016 M, 0,004 M. Sinteza je provedena pri 95 °C uz miješanje. Pripremljene su i otopine srebrovog nitrata i askorbinske kiseline, u koncentracijama 0,010 M, 0,020 M, 0,040 M, te je provedena sinteza pri sobnoj temperaturi, uz miješanje, i pri 50 °C. Kvaliteta koloidnog srebra ocjenjuje se na osnovi intenziteta Tyndallovog efekta, a apsorbancija dobivenih koloida određuje se UV-Vis spektrofotometrom. Rezultati ispitivanja potvrdili su uspješno korištenje trinatrijevog citrata dihidrata i askorbinske kiseline kao reducense za sintezu koloidnog srebra. Koloidnom srebru sintetiziranom pomoću natrijevog borohidrida procijenjena veličina čestica bila je oko 14 nm, dok je koloidnom srebru sintetiziranom pomoću askorbinske kiseline odgovarala veličina čestica od 14 do 35 nm. Na osnovi intenziteta Tyndallovog efekta pokazalo se da su dobiveni bolji rezultati sinteze uz grijanje pri 50 °C za askorbinsku kiselinu, dok se kod sinteze s trinatrijevim citratom dihidratom dobila mala količina koloidnog srebra jer sinteza nije bila do kraja završena. Less
Abstract (english)
In this study, the synthesis of colloidal silver with trisodium citrate dihydrate and ascorbic acid was performed as appropriate reducing agents. Based on the obtained UV-Vis peaks, the size of the colloidal particles was estimated and it was concluded which conditions were most suitable for synthesis with the appropriate reducing agent Standard solutions of 0.001 M AgNO 3 and 0.002 M NaBH 4 were prepared, as well as solutions of silver nitrate and trisodium... More citrate dihydrate solutions at concentrations of 0,010 M, 0,016 M, 0,004 M. The synthesis was carried at 95 °C, with stirring. Silver nitrate and ascorbic acid solutions were prepared at concentrations of 0,010 M, 0,020 M, 0,040 M, and synthesis was carried out at room temperature, with stirring, and at 50 °C. The quality of colloidal silver is evaluated based on the intensity of the Tyndall effect, and the absorbance of the colloids obtained is determined by a UV - Vis spectrophotometer. The test results confirmed the successful use of trisodium citrate dihydrate and ascorbic acid as reducing agents for the synthesis of colloidal silver. The colloidal silver synthesized by sodium borohydride had an estimated particle size of about 14 nm, while the colloidal silver synthesized using ascorbic acid corresponded to a particle size of 14 to 35 nm. On the basis of the intensity of the Tyndall effect, it was shown that better synthesis results were obtained with heating at 50 °C for ascorbic acid, while the synthesis with trisodium citrate dihydrate produced a small amount of colloidal silver because the synthesis was not completely complete. . Less
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:137519
Study programmeTitle: Chemical Technology; specializations in: Materials, Environmental Protection, Mediteranean Cultures
Course: Materials
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2020-02-21 12:36:47
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