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Silver-Platinum Core-Shell Nanowires...

Tunca, Sensu,

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Silver-Platinum Core-Shell Nanowires for Electrochemical Applications = = Elektroki̇myasal Uygulamalar İci̇n Gumus-Plati̇n Ceki̇rdek-Kabuk Nanotelleri̇ /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Silver-Platinum Core-Shell Nanowires for Electrochemical Applications =/ Sensu Tunca.
Reminder of title:	Elektroki̇myasal Uygulamalar İci̇n Gumus-Plati̇n Ceki̇rdek-Kabuk Nanotelleri̇ /
Author:	Tunca, Sensu,
Description:	1 electronic resource (140 pages)
Notes:	Source: Masters Abstracts International, Volume: 86-04.
Contained By:	Masters Abstracts International86-04.
Subject:	Nitrates. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31656719
ISBN:	9798342376778

Silver-Platinum Core-Shell Nanowires for Electrochemical Applications = = Elektroki̇myasal Uygulamalar İci̇n Gumus-Plati̇n Ceki̇rdek-Kabuk Nanotelleri̇ /
Tunca, Sensu,

Silver-Platinum Core-Shell Nanowires for Electrochemical Applications =Elektroki̇myasal Uygulamalar İci̇n Gumus-Plati̇n Ceki̇rdek-Kabuk Nanotelleri̇ /Sensu Tunca. - 1 electronic resource (140 pages)

Source: Masters Abstracts International, Volume: 86-04.

Silver nanowire (Ag NW) networks are one of the most outstanding candidates for optoelectronic applications to replace the commercial transparent conducting oxides (TCOs). Their high mechanical stability, solution based and scalable, low-cost synthesis and deposition routes make them an advantageous candidate over TCOs for future electronics. However, the integration of NW networks into electronic devices requires high thermal, chemical and electrochemical stability of NWs. This work describes the fabrication of highly stable silver-platinum (Ag-Pt) core-shell NW networks to be utilized in both amperometric hydrogen peroxide (H2O2) sensors and supercapacitors.Detailed morphological and structural characterization of the Ag-Pt core-shell NWs showed that conformal and galvanic replacement free Ag-Pt core-shell NWs were obtained. Ag-Pt core-shell NWs had superior stability in harsh H2O2 environments compared to bare Ag NWs. To examine the use of Ag-Pt core-shell NWs in H2O2 sensors, stability of Ag-Pt core-shell NWs against H2O2 was investigated. Following that, Ag-Pt core-shell NW based H2O2sensors were fabricated and a sensitivity of 0.167 μA/μM, in the linear range of 8.16-160.60 μM with a detection limit of 4.75 μM in phosphate buffer (pH 7) medium was obtained from the fabricated sensors.For the fabrication of supercapacitors, Ag-Pt core-shell NW networks were electrochemically deposited with nickel hydroxide (Ni(OH)2). The prepared Ag-Pt-Ni(OH)2nanocomposite electrodes showed high stability during electrochemical measurements and a specific capacitance of 816.7 F/g at a current density of 5 A/g was obtained.Deposition of a conformal Pt shell layer improved the chemical and electrochemical stability of Ag NWs so that they can be used as electrodes for amperometric H2O2sensors and supercapacitors. The succesfully demonstrated applications of Ag-Pt core-shell NWs herein revealed the potential of these materials for their use in other optoelectronic and energy devices.

English

ISBN: 9798342376778Subjects--Topical Terms:

914879
Nitrates.

Silver-Platinum Core-Shell Nanowires for Electrochemical Applications = = Elektroki̇myasal Uygulamalar İci̇n Gumus-Plati̇n Ceki̇rdek-Kabuk Nanotelleri̇ /
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100 1 $a Tunca, Sensu, $e author. $3 3823966
245 1 0 $a Silver-Platinum Core-Shell Nanowires for Electrochemical Applications = $b Elektroki̇myasal Uygulamalar İci̇n Gumus-Plati̇n Ceki̇rdek-Kabuk Nanotelleri̇ / $c Sensu Tunca.
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 1 electronic resource (140 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
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500 $a Source: Masters Abstracts International, Volume: 86-04.
500 $a Advisors: Unalan, Husnu Emrah.
502 $b M.S. $c Middle East Technical University (Turkey) $d 2021.
520 $a Silver nanowire (Ag NW) networks are one of the most outstanding candidates for optoelectronic applications to replace the commercial transparent conducting oxides (TCOs). Their high mechanical stability, solution based and scalable, low-cost synthesis and deposition routes make them an advantageous candidate over TCOs for future electronics. However, the integration of NW networks into electronic devices requires high thermal, chemical and electrochemical stability of NWs. This work describes the fabrication of highly stable silver-platinum (Ag-Pt) core-shell NW networks to be utilized in both amperometric hydrogen peroxide (H2O2) sensors and supercapacitors.Detailed morphological and structural characterization of the Ag-Pt core-shell NWs showed that conformal and galvanic replacement free Ag-Pt core-shell NWs were obtained. Ag-Pt core-shell NWs had superior stability in harsh H2O2 environments compared to bare Ag NWs. To examine the use of Ag-Pt core-shell NWs in H2O2 sensors, stability of Ag-Pt core-shell NWs against H2O2 was investigated. Following that, Ag-Pt core-shell NW based H2O2sensors were fabricated and a sensitivity of 0.167 μA/μM, in the linear range of 8.16-160.60 μM with a detection limit of 4.75 μM in phosphate buffer (pH 7) medium was obtained from the fabricated sensors.For the fabrication of supercapacitors, Ag-Pt core-shell NW networks were electrochemically deposited with nickel hydroxide (Ni(OH)2). The prepared Ag-Pt-Ni(OH)2nanocomposite electrodes showed high stability during electrochemical measurements and a specific capacitance of 816.7 F/g at a current density of 5 A/g was obtained.Deposition of a conformal Pt shell layer improved the chemical and electrochemical stability of Ag NWs so that they can be used as electrodes for amperometric H2O2sensors and supercapacitors. The succesfully demonstrated applications of Ag-Pt core-shell NWs herein revealed the potential of these materials for their use in other optoelectronic and energy devices.
520 $a Gumus nanotel aglari, optoelektronik uygulamalarda kullanilmak uzere ticari olarak temin edilebilen seffaf iletken oksitlerin yerini alacak en seckin adaylardan biridir. Yuksek mekanik kararliliklari, solusyon bazli ve olceklenebilir sentez ve biriktirme metotlari, onlari gelecekteki elektronik cihazlar icin seffaf iletken oksitlere gore avantajli bir aday haline getirmektedir. Bununla birlikte, nanotel aglarinin elektronik cihazlara entegrasyonu, nanotellerin yuksek kararliliga sahip olmasini gerektirmektedir. Bu calisma, hem amperometrik hidrojen peroksit (H2O2) sensoru hem de superkapasitorler olarak kullanilacak, oldukca kararli gumus-platin (Ag-Pt) cekirdek-kabuk nanotel ag elektrotlarinin uretimini aciklamaktadir.Ag-Pt cekirdek kabuk nanotellerinin ayrintili morfolojik ve yapisal karakterizasyonu, galvanik yerdegistirme reaksiyonunun gorulmedigi konformal kaplamanin saglandigi Ag-Pt cekirdek-kabuk nanotellerinin elde edildigini gostermistir. Ag-Pt cekirdek-kabuk NW'lerinin, yalin Ag NW'lere kiyasla zorlu H2O2 ortamlarinda ustun kararliliga sahip oldugu gosterilmistir. Uretilen Ag-Pt cekirdek-kabuk nanotellerinin, H2O2 sensorlerinde kullanimini incelemek icin, Ag-Pt cekirdek-kabuk nanotellerin H2O2 maruziyetine karsi kararliligi arastirilmistir. Daha sonrasinda Ag-Pt cekirdek-kabuk nanotel bazli H2O2sensoru uretilmis ve fosfat tamponu (pH 7) icerisinde 8.16-160.60 μM liner araligi, 0.167 μA/μM hassasiyet, 4.75 μM algilama siniri elde edilmistir.Superkapasitorlerin uretimi icin, Ag-Pt cekirdek-kabuk nanoteller uzerinde elektrokimyasal biriktirme yontemi ile Ni(OH)2biriktirmesi gerceklestirilmistir. Uretilen elektrotlar, elektrokimyasal olcumler sirasinda, 5 A/g akim yogunlugunda 816.7 F/g ozgul kapasitans ile daha yuksek kararlilik sergilemistir.Koruyucu Pt kabuk tabakasi kaplamasi, Ag nanotellerin kimyasal ve elektrokimyasal kararliligini gelistirmis, boylece amperometrik H2O2sensorleri ve superkapasitorler icin elektrot olarak kullanilmalarini saglamistir. Ag-Pt cekirdek-kabuk nanotellerinin basariyla gosterilen uygulamalari, bu malzemelerin diger optoelektronik ve enerji cihazlarinda kullanilmalari icin potansiyelini ortaya cikartmistir.
546 $a English
590 $a School code: 2013
650 4 $a Nitrates. $3 914879
650 4 $a Zinc oxides. $3 3681737
650 4 $a Scanning electron microscopy. $3 551366
650 4 $a Analytical chemistry. $3 3168300
690 $a 0486
710 2 $a Middle East Technical University (Turkey). $b Department of Metallurgical and Materials Engineering. $e degree granting institution. $3 3823967
720 1 $a Unalan, Husnu Emrah $e degree supervisor.
773 0 $t Masters Abstracts International $g 86-04.
790 $a 2013
791 $a M.S.
792 $a 2021
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31656719