Mechanochemical synthesis of gold-silver nanocomposites via diazonium salts

Nemat D. AlBab; Heeyeon Nam; Changseok Han; Maria Omastova; Mohamed M. Chehimi; Ahmed A. Mohamed

doi:10.1016/j.inoche.2022.109231

Mechanochemical synthesis of gold-silver nanocomposites via diazonium salts

Nemat D. AlBab, Heeyeon Nam, Changseok Han, Maria Omastova, Mohamed M. Chehimi, Ahmed A. Mohamed

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Mechanochemical synthesis of gold-silver nanocomposites from 4-ethynylaryl diazonium tetrachloroaurate(III) salt over chitosan is reported. The nanocomposites (AuAg-CTS NCs, CTS is chitosan) were synthesized by a simple grinding method using an agate mortar and pestle under ambient conditions. Four solid–solid reaction methods were used namely co-reduction, seeding, galvanic exchange, and immobilization. UV–visible data for the nanocomposites showed a peak at 445 nm. Transmission electron microscopy showed variable sizes for AuAg-CTS NCs such as 4.8 ± 0.9 nm (co-reduction), 74 ± 24 nm (seeding), 59 ± 26 nm (exchange), and 11.3 ± 7 nm (immobilization). X-ray photoelectron spectroscopy measurements supported the formation of gold and silver metals with a peak for Au4f_7/2 at 84.8 eV and Ag3d_5/2 at 368.2 eV.

Original language	English
Article number	109231
Journal	Inorganic Chemistry Communication
Volume	137
DOIs	https://doi.org/10.1016/j.inoche.2022.109231
State	Published - Mar 2022

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Publisher Copyright:
© 2022 Elsevier B.V.

Keywords

Chitosan
Diazonium gold salt
Electrochemistry
Gold-silver
Mechanochemical
Nanocomposite

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@article{51423d06b50747bd8e15e5066c986037,

title = "Mechanochemical synthesis of gold-silver nanocomposites via diazonium salts",

abstract = "Mechanochemical synthesis of gold-silver nanocomposites from 4-ethynylaryl diazonium tetrachloroaurate(III) salt over chitosan is reported. The nanocomposites (AuAg-CTS NCs, CTS is chitosan) were synthesized by a simple grinding method using an agate mortar and pestle under ambient conditions. Four solid–solid reaction methods were used namely co-reduction, seeding, galvanic exchange, and immobilization. UV–visible data for the nanocomposites showed a peak at 445 nm. Transmission electron microscopy showed variable sizes for AuAg-CTS NCs such as 4.8 ± 0.9 nm (co-reduction), 74 ± 24 nm (seeding), 59 ± 26 nm (exchange), and 11.3 ± 7 nm (immobilization). X-ray photoelectron spectroscopy measurements supported the formation of gold and silver metals with a peak for Au4f7/2 at 84.8 eV and Ag3d5/2 at 368.2 eV.",

keywords = "Chitosan, Diazonium gold salt, Electrochemistry, Gold-silver, Mechanochemical, Nanocomposite",

author = "AlBab, {Nemat D.} and Heeyeon Nam and Changseok Han and Maria Omastova and Chehimi, {Mohamed M.} and Mohamed, {Ahmed A.}",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = mar,

doi = "10.1016/j.inoche.2022.109231",

language = "English",

volume = "137",

journal = "Inorganic Chemistry Communication",

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TY - JOUR

T1 - Mechanochemical synthesis of gold-silver nanocomposites via diazonium salts

AU - AlBab, Nemat D.

AU - Nam, Heeyeon

AU - Han, Changseok

AU - Omastova, Maria

AU - Chehimi, Mohamed M.

AU - Mohamed, Ahmed A.

PY - 2022/3

Y1 - 2022/3

N2 - Mechanochemical synthesis of gold-silver nanocomposites from 4-ethynylaryl diazonium tetrachloroaurate(III) salt over chitosan is reported. The nanocomposites (AuAg-CTS NCs, CTS is chitosan) were synthesized by a simple grinding method using an agate mortar and pestle under ambient conditions. Four solid–solid reaction methods were used namely co-reduction, seeding, galvanic exchange, and immobilization. UV–visible data for the nanocomposites showed a peak at 445 nm. Transmission electron microscopy showed variable sizes for AuAg-CTS NCs such as 4.8 ± 0.9 nm (co-reduction), 74 ± 24 nm (seeding), 59 ± 26 nm (exchange), and 11.3 ± 7 nm (immobilization). X-ray photoelectron spectroscopy measurements supported the formation of gold and silver metals with a peak for Au4f7/2 at 84.8 eV and Ag3d5/2 at 368.2 eV.

AB - Mechanochemical synthesis of gold-silver nanocomposites from 4-ethynylaryl diazonium tetrachloroaurate(III) salt over chitosan is reported. The nanocomposites (AuAg-CTS NCs, CTS is chitosan) were synthesized by a simple grinding method using an agate mortar and pestle under ambient conditions. Four solid–solid reaction methods were used namely co-reduction, seeding, galvanic exchange, and immobilization. UV–visible data for the nanocomposites showed a peak at 445 nm. Transmission electron microscopy showed variable sizes for AuAg-CTS NCs such as 4.8 ± 0.9 nm (co-reduction), 74 ± 24 nm (seeding), 59 ± 26 nm (exchange), and 11.3 ± 7 nm (immobilization). X-ray photoelectron spectroscopy measurements supported the formation of gold and silver metals with a peak for Au4f7/2 at 84.8 eV and Ag3d5/2 at 368.2 eV.

KW - Chitosan

KW - Diazonium gold salt

KW - Electrochemistry

KW - Gold-silver

KW - Mechanochemical

KW - Nanocomposite

UR - http://www.scopus.com/inward/record.url?scp=85123216297&partnerID=8YFLogxK

U2 - 10.1016/j.inoche.2022.109231

DO - 10.1016/j.inoche.2022.109231

M3 - Article

AN - SCOPUS:85123216297

SN - 1387-7003

VL - 137

JO - Inorganic Chemistry Communication

JF - Inorganic Chemistry Communication

M1 - 109231

ER -

Mechanochemical synthesis of gold-silver nanocomposites via diazonium salts

Abstract

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Keywords

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