Gold Nanoparticles Formation via Au(III) Complex Ions Reduction with l‐Ascorbic Acid
ABSTRACT In this paper, the kinetics and mechanism of gold nanoparticles formation during the redox reaction between [AuCl4]− complex and l‐ascorbic acid under different conditions were described. It was also shown that reagent concentration, chloride ions, and pH influence kinetics of nucleation an...
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| Veröffentlicht in: | International journal of chemical kinetics 2017-11, Vol.49 (11), p.789-797 |
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| container_title | International journal of chemical kinetics |
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| creator | Luty‐Błocho, M. Wojnicki, M. Fitzner, K. |
| description | ABSTRACT
In this paper, the kinetics and mechanism of gold nanoparticles formation during the redox reaction between [AuCl4]− complex and l‐ascorbic acid under different conditions were described. It was also shown that reagent concentration, chloride ions, and pH influence kinetics of nucleation and growth. To establish rate constants of these stages, the model of Finke and Watzky was applied. From Arrhenius and Eyring dependencies, the values of activation energy (22.5 kJ mol−1 for the nucleation step and 30.3 kJ mol−1 for the growth step), entropy (about −228 J K−1 mol−1 for the nucleation step and −128 J K−1 mol−1 for the growth step), and enthalpy (19.8 kJ mol−1 for nucleation and 27.8 kJ mol−1 for particles growth) were determined. It was also shown that the disproporationation reaction had influence on the rate of nanoparticles formation and may have impact on final particles morphology. |
| doi_str_mv | 10.1002/kin.21115 |
| format | Article |
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In this paper, the kinetics and mechanism of gold nanoparticles formation during the redox reaction between [AuCl4]− complex and l‐ascorbic acid under different conditions were described. It was also shown that reagent concentration, chloride ions, and pH influence kinetics of nucleation and growth. To establish rate constants of these stages, the model of Finke and Watzky was applied. From Arrhenius and Eyring dependencies, the values of activation energy (22.5 kJ mol−1 for the nucleation step and 30.3 kJ mol−1 for the growth step), entropy (about −228 J K−1 mol−1 for the nucleation step and −128 J K−1 mol−1 for the growth step), and enthalpy (19.8 kJ mol−1 for nucleation and 27.8 kJ mol−1 for particles growth) were determined. It was also shown that the disproporationation reaction had influence on the rate of nanoparticles formation and may have impact on final particles morphology.</description><identifier>ISSN: 0538-8066</identifier><identifier>EISSN: 1097-4601</identifier><identifier>DOI: 10.1002/kin.21115</identifier><language>eng</language><publisher>Hoboken: Wiley Subscription Services, Inc</publisher><subject>Ascorbic acid ; Chloride ions ; Enthalpy ; Gold ; Nanoparticles ; Nucleation ; Rate constants ; Reaction kinetics ; Vitamin C</subject><ispartof>International journal of chemical kinetics, 2017-11, Vol.49 (11), p.789-797</ispartof><rights>2017 Wiley Periodicals, Inc.</rights><rights>Copyright © 2017 Wiley Periodicals, Inc., A Wiley Company</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2635-9a80c0d192035256742d82ce48e30d6fece1a115bfac8596d69b3fa044a44a2f3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fkin.21115$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fkin.21115$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids></links><search><creatorcontrib>Luty‐Błocho, M.</creatorcontrib><creatorcontrib>Wojnicki, M.</creatorcontrib><creatorcontrib>Fitzner, K.</creatorcontrib><title>Gold Nanoparticles Formation via Au(III) Complex Ions Reduction with l‐Ascorbic Acid</title><title>International journal of chemical kinetics</title><description>ABSTRACT
In this paper, the kinetics and mechanism of gold nanoparticles formation during the redox reaction between [AuCl4]− complex and l‐ascorbic acid under different conditions were described. It was also shown that reagent concentration, chloride ions, and pH influence kinetics of nucleation and growth. To establish rate constants of these stages, the model of Finke and Watzky was applied. From Arrhenius and Eyring dependencies, the values of activation energy (22.5 kJ mol−1 for the nucleation step and 30.3 kJ mol−1 for the growth step), entropy (about −228 J K−1 mol−1 for the nucleation step and −128 J K−1 mol−1 for the growth step), and enthalpy (19.8 kJ mol−1 for nucleation and 27.8 kJ mol−1 for particles growth) were determined. It was also shown that the disproporationation reaction had influence on the rate of nanoparticles formation and may have impact on final particles morphology.</description><subject>Ascorbic acid</subject><subject>Chloride ions</subject><subject>Enthalpy</subject><subject>Gold</subject><subject>Nanoparticles</subject><subject>Nucleation</subject><subject>Rate constants</subject><subject>Reaction kinetics</subject><subject>Vitamin C</subject><issn>0538-8066</issn><issn>1097-4601</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNotkM1KAzEURoMoWKsL3yDgRhfT3iSTNFkOxdbBUkHUbUgzGUydTsb5sXbnI_iMPoljK1y4d3G4H99B6JLAiADQ8ZsvR5QQwo_QgICaRLEAcowGwJmMJAhxis6aZg0AShE-QC_zUGR4acpQmbr1tnANnoV6Y1ofSvzhDU666zRNb_A0bKrCfeI0lA1-dFln98jWt6-4-Pn6Thob6pW3OLE-O0cnuSkad_G_h-h5dvs0vYsWD_N0miwiSwXjkTISLGREUWCccjGJaSapdbF0DDKRO-uI6cuscmMlVyITasVyA3Fs-qE5G6Krw9-qDu-da1q9Dl1d9pGaqJgBl0SSnhofqK0v3E5Xtd-YeqcJ6D9nunem9870fbrcH-wXsM1gSw</recordid><startdate>201711</startdate><enddate>201711</enddate><creator>Luty‐Błocho, M.</creator><creator>Wojnicki, M.</creator><creator>Fitzner, K.</creator><general>Wiley Subscription Services, Inc</general><scope/></search><sort><creationdate>201711</creationdate><title>Gold Nanoparticles Formation via Au(III) Complex Ions Reduction with l‐Ascorbic Acid</title><author>Luty‐Błocho, M. ; Wojnicki, M. ; Fitzner, K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2635-9a80c0d192035256742d82ce48e30d6fece1a115bfac8596d69b3fa044a44a2f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Ascorbic acid</topic><topic>Chloride ions</topic><topic>Enthalpy</topic><topic>Gold</topic><topic>Nanoparticles</topic><topic>Nucleation</topic><topic>Rate constants</topic><topic>Reaction kinetics</topic><topic>Vitamin C</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Luty‐Błocho, M.</creatorcontrib><creatorcontrib>Wojnicki, M.</creatorcontrib><creatorcontrib>Fitzner, K.</creatorcontrib><jtitle>International journal of chemical kinetics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Luty‐Błocho, M.</au><au>Wojnicki, M.</au><au>Fitzner, K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Gold Nanoparticles Formation via Au(III) Complex Ions Reduction with l‐Ascorbic Acid</atitle><jtitle>International journal of chemical kinetics</jtitle><date>2017-11</date><risdate>2017</risdate><volume>49</volume><issue>11</issue><spage>789</spage><epage>797</epage><pages>789-797</pages><issn>0538-8066</issn><eissn>1097-4601</eissn><abstract>ABSTRACT
In this paper, the kinetics and mechanism of gold nanoparticles formation during the redox reaction between [AuCl4]− complex and l‐ascorbic acid under different conditions were described. It was also shown that reagent concentration, chloride ions, and pH influence kinetics of nucleation and growth. To establish rate constants of these stages, the model of Finke and Watzky was applied. From Arrhenius and Eyring dependencies, the values of activation energy (22.5 kJ mol−1 for the nucleation step and 30.3 kJ mol−1 for the growth step), entropy (about −228 J K−1 mol−1 for the nucleation step and −128 J K−1 mol−1 for the growth step), and enthalpy (19.8 kJ mol−1 for nucleation and 27.8 kJ mol−1 for particles growth) were determined. It was also shown that the disproporationation reaction had influence on the rate of nanoparticles formation and may have impact on final particles morphology.</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1002/kin.21115</doi><tpages>9</tpages></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Ascorbic acid Chloride ions Enthalpy Gold Nanoparticles Nucleation Rate constants Reaction kinetics Vitamin C |
| title | Gold Nanoparticles Formation via Au(III) Complex Ions Reduction with l‐Ascorbic Acid |
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