NDLI: Synthesis of Au, Ag, and Au–Ag Bimetallic Nanoparticles Using Pulicaria undulata Extract and Their Catalytic Activity for the Reduction of 4-Nitrophenol

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Synthesis of Au, Ag, and Au–Ag Bimetallic Nanoparticles Using Pulicaria undulata Extract and Their Catalytic Activity for the Reduction of 4-Nitrophenol

Content Provider	MDPI
Author	Khan, Merajuddin Al-Hamoud, Khaleel Liaqat, Zainab Shaik, Mohammed Rafi Adil, Syed Farooq Kuniyil, Mufsir Alkhathlan, Hamad Z. Al-Warthan, Abdulrahman Siddiqui, Mohammed Rafiq H. Mondeshki, Mihail Tremel, Wolfgang Khan, Mujeeb Tahir, Muhammad Nawaz
Copyright Year	2020
Description	Plant extract of Pulicaria undulata (L.) was used as both reducing agent and stabilizing ligand for the rapid and green synthesis of gold (Au), silver (Ag), and gold–silver (Au–Ag) bimetallic (phase segregated/alloy) nanoparticles (NPs). These nanoparticles with different morphologies were prepared in two hours by stirring corresponding metal precursors in the aqueous solution of the plant extracts at ambient temperature. To infer the role of concentration of plant extract on the composition and morphology of NPs, we designed two different sets of experiments, namely (i) low concentration (LC) and (ii) high concentration (HC) of plant extract. In the case of using low concentration of the plant extract, irregular shaped Au, Ag, or phase segregated Au–Ag bimetallic NPs were obtained, whereas the use of higher concentrations of the plant extract resulted in the formation of spherical Au, Ag, and Au–Ag alloy NPs. The as-prepared Au, Ag, and Au–Ag bimetallic NPs showed morphology and composition dependent catalytic activity for the reduction of 4-nitrophenol (4-NPh) to 4-aminophenol (4-APh) in the presence of NaBH4. The bimetallic Au–Ag alloy NPs showed the highest catalytic activity compared to all other NPs.
Starting Page	1885
e-ISSN	20794991
DOI	10.3390/nano10091885
Journal	Nanomaterials
Issue Number	9
Volume Number	10
Language	English
Publisher	MDPI
Publisher Date	2020-09-20
Access Restriction	Open
Subject Keyword	Nanomaterials Water Science and Technology Gold Silver Bimetallic Nanoparticles Plant Extract Pulicaria Undulata Catalytic Activity
Content Type	Text
Resource Type	Article

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