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Ag-Cu Bimetallic Nanoparticle Synthesis and Properties.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Ag-Cu Bimetallic Nanoparticle Synthesis and Properties./
作者:	Xiong, Ziye.
面頁冊數:	1 online resource (172 pages)
附註:	Source: Dissertation Abstracts International, Volume: 79-04(E), Section: B.
Contained By:	Dissertation Abstracts International79-04B(E).
標題:	Nanotechnology. -
電子資源:	click for full text (PQDT)
ISBN:	9780355411089

Ag-Cu Bimetallic Nanoparticle Synthesis and Properties.
Xiong, Ziye.

Ag-Cu Bimetallic Nanoparticle Synthesis and Properties. - 1 online resource (172 pages)

Source: Dissertation Abstracts International, Volume: 79-04(E), Section: B.

Thesis (Ph.D.)

Includes bibliographical references

Silver(Ag)-Copper(Cu) bimetallic nanoparticles (NPs) were synthesized by chemical reduction with the assistance of a microwave reactor. Considering the difference in redox potential of Ag(I) and Cu(II), the effect of heating method was compared using 'one-pot' and 'twopot' synthesis of Ag-Cu shell-core and Ag-Cu core-shell nanoparticles. One-pot synthesis naturally results in Ag-Cu core-shell nanoparticles since silver has the higher redox potential than copper. In the two-pot synthesis of Ag-Cu core-shell nanoparticles, the effect of the heating conditions was compared. At the highest reaction temperature (175 °C), the galvanic reaction by which silver reduction occurred through the oxidation copper metal, was suppressed and higher Cu/Ag phase ratios could be achieved.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355411089Subjects--Topical Terms:

557660
Nanotechnology.
Index Terms--Genre/Form:

554714
Electronic books.

Ag-Cu Bimetallic Nanoparticle Synthesis and Properties.
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245 1 0 $a Ag-Cu Bimetallic Nanoparticle Synthesis and Properties.
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300 $a 1 online resource (172 pages)
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500 $a Source: Dissertation Abstracts International, Volume: 79-04(E), Section: B.
500 $a Adviser: Tom Nettleship.
502 $a Thesis (Ph.D.) $c University of Pittsburgh $d 2017.
504 $a Includes bibliographical references
520 $a Silver(Ag)-Copper(Cu) bimetallic nanoparticles (NPs) were synthesized by chemical reduction with the assistance of a microwave reactor. Considering the difference in redox potential of Ag(I) and Cu(II), the effect of heating method was compared using 'one-pot' and 'twopot' synthesis of Ag-Cu shell-core and Ag-Cu core-shell nanoparticles. One-pot synthesis naturally results in Ag-Cu core-shell nanoparticles since silver has the higher redox potential than copper. In the two-pot synthesis of Ag-Cu core-shell nanoparticles, the effect of the heating conditions was compared. At the highest reaction temperature (175 °C), the galvanic reaction by which silver reduction occurred through the oxidation copper metal, was suppressed and higher Cu/Ag phase ratios could be achieved.
520 $a Nanoparticles properties were examined in the following areas: (i) nanoparticle solubility and antibacterial effects, (ii) sintering behavior and electrical conductivity of nanoparticle films. Enhanced antibacterial effects were observed for mixtures of Ag and Cu nanoparticles against planktonic M.smegmatis silver resistant mutants as well as the wild type when compared to the antibacterial effects of pure Ag or Cu NPs alone. However, solubility tests in deionized water, showed that very low Ag ion concentrations resulted when copper was present either in bimetallic nanoparticles or in mixtures of Ag and Cu NPs. This was attributed to a galvanic effect that suppressed the oxidation of silver.
520 $a The deposition of nanoparticles on surfaces was studied in terms of the ability of the deposited nanoparticles to inhibit the growth the biofilm. Printed silver nanoparticle dots deposited on microfilters exhibited significant antibacterial effect in inhibiting the growth of biofilm over the whole micro filter surface. Increasing the areal coverage of the dots or their size decreased the number and the size of bacterial colonies. Finally, the sintering behavior of Ag-Cu shell core nanoparticles proved superior to that of Cu nanoparticles and to mixture of silver and copper nanoparticles. This resulted in higher electrical conductivity in the nanoparticle films sintered at lower temperature. This is thought to be due to the higher fraction of Ag-Ag particle contacts.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Nanotechnology. $3 557660
650 4 $a Chemical engineering. $3 555952
650 4 $a Materials science. $3 557839
655 7 $a Electronic books. $2 local $3 554714
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710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a University of Pittsburgh. $3 1178873
773 0 $t Dissertation Abstracts International $g 79-04B(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10692634 $z click for full text (PQDT)