PL415546A1 - Method for obtaining stable suspensions of silver nanoparticles with positive surface charge - Google Patents

Method for obtaining stable suspensions of silver nanoparticles with positive surface charge

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Publication number
PL415546A1
PL415546A1 PL415546A PL41554615A PL415546A1 PL 415546 A1 PL415546 A1 PL 415546A1 PL 415546 A PL415546 A PL 415546A PL 41554615 A PL41554615 A PL 41554615A PL 415546 A1 PL415546 A1 PL 415546A1
Authority
PL
Poland
Prior art keywords
silver
aminothioethanol
surface charge
reducing agent
positive surface
Prior art date
Application number
PL415546A
Other languages
Polish (pl)
Other versions
PL235834B1 (en
Inventor
Magdalena Oćwieja
Zbigniew Adamczyk
Original Assignee
Instytut Katalizy I Fizykochemii Powierzchni Im. Jerzego Habera Polskiej Akademii Nauk
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Instytut Katalizy I Fizykochemii Powierzchni Im. Jerzego Habera Polskiej Akademii Nauk filed Critical Instytut Katalizy I Fizykochemii Powierzchni Im. Jerzego Habera Polskiej Akademii Nauk
Priority to PL415546A priority Critical patent/PL235834B1/en
Publication of PL415546A1 publication Critical patent/PL415546A1/en
Publication of PL235834B1 publication Critical patent/PL235834B1/en

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Abstract

Przedmiotem zgłoszenia jest sposób uzyskiwania stabilnych suspensji nanocząstek srebra o dodatnim ładunku powierzchniowym na drodze redukcji chemicznej, z użyciem nieorganicznego czynnika redukującego, rozpuszczalnych w wodzie soli srebra jako źródła jonów srebra, a zwłaszcza azotanu(V) srebra lub octanu srebra oraz 2-aminotioetanolu jako stabilizatora. Sposób ten charakteryzuje się tym, że jony srebra, wprowadzone do wodnego środowiska reakcji w postaci azotanu(V) srebra lub octanu srebra, kompleksuje się 2-aminotioetanolem, wprowadzonym do środowiska reakcji w postaci chlorowodorku, po czym dokonuje się redukcji chemicznej skompleksowanych jonów srebra, stosując jako reduktor fosfinian(I) sodu w stężeniu molowym od 0,5 mM do 40 mM, przy czym roztwór reduktora wprowadza się do zakwaszonego roztworu kompleksów jonów srebra z 2-aminotioetanolem, zachowując pH mieszaniny reakcyjnej w przedziale od 2 do 4.The subject of the application is a method for obtaining stable suspensions of silver nanoparticles with a positive surface charge by chemical reduction, using an inorganic reducing agent, water-soluble silver salts as a source of silver ions, in particular silver nitrate (V) or silver acetate and 2-aminothioethanol as a stabilizer . This method is characterized by the fact that silver ions, introduced into the aqueous reaction environment in the form of silver nitrate or silver acetate, are complexed with 2-aminothioethanol, introduced into the reaction environment in the form of the hydrochloride, followed by chemical reduction of the complexed silver ions, using sodium phosphinate (I) as a reducing agent in a molar concentration from 0.5 mM to 40 mM, the reducing agent solution being introduced into the acidified solution of silver ion complexes with 2-aminothioethanol, maintaining the pH of the reaction mixture in the range from 2 to 4.

PL415546A 2015-12-28 2015-12-28 Method for obtaining stable suspensions of silver nanoparticles with positive surface charge PL235834B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL415546A PL235834B1 (en) 2015-12-28 2015-12-28 Method for obtaining stable suspensions of silver nanoparticles with positive surface charge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL415546A PL235834B1 (en) 2015-12-28 2015-12-28 Method for obtaining stable suspensions of silver nanoparticles with positive surface charge

Publications (2)

Publication Number Publication Date
PL415546A1 true PL415546A1 (en) 2017-07-03
PL235834B1 PL235834B1 (en) 2020-11-02

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ID=59201348

Family Applications (1)

Application Number Title Priority Date Filing Date
PL415546A PL235834B1 (en) 2015-12-28 2015-12-28 Method for obtaining stable suspensions of silver nanoparticles with positive surface charge

Country Status (1)

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PL (1) PL235834B1 (en)

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Publication number Publication date
PL235834B1 (en) 2020-11-02

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