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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

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...

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Autores principales: 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
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7559643/
https://www.ncbi.nlm.nih.gov/pubmed/32962292
http://dx.doi.org/10.3390/nano10091885
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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
author_facet 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
author_sort Khan, Merajuddin
collection PubMed
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 NaBH(4). The bimetallic Au–Ag alloy NPs showed the highest catalytic activity compared to all other NPs.
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spelling pubmed-75596432020-10-29 Synthesis of Au, Ag, and Au–Ag Bimetallic Nanoparticles Using Pulicaria undulata Extract and Their Catalytic Activity for the Reduction of 4-Nitrophenol 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 Nanomaterials (Basel) Article 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 NaBH(4). The bimetallic Au–Ag alloy NPs showed the highest catalytic activity compared to all other NPs. MDPI 2020-09-20 /pmc/articles/PMC7559643/ /pubmed/32962292 http://dx.doi.org/10.3390/nano10091885 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
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
Synthesis of Au, Ag, and Au–Ag Bimetallic Nanoparticles Using Pulicaria undulata Extract and Their Catalytic Activity for the Reduction of 4-Nitrophenol
title Synthesis of Au, Ag, and Au–Ag Bimetallic Nanoparticles Using Pulicaria undulata Extract and Their Catalytic Activity for the Reduction of 4-Nitrophenol
title_full Synthesis of Au, Ag, and Au–Ag Bimetallic Nanoparticles Using Pulicaria undulata Extract and Their Catalytic Activity for the Reduction of 4-Nitrophenol
title_fullStr Synthesis of Au, Ag, and Au–Ag Bimetallic Nanoparticles Using Pulicaria undulata Extract and Their Catalytic Activity for the Reduction of 4-Nitrophenol
title_full_unstemmed Synthesis of Au, Ag, and Au–Ag Bimetallic Nanoparticles Using Pulicaria undulata Extract and Their Catalytic Activity for the Reduction of 4-Nitrophenol
title_short Synthesis of Au, Ag, and Au–Ag Bimetallic Nanoparticles Using Pulicaria undulata Extract and Their Catalytic Activity for the Reduction of 4-Nitrophenol
title_sort synthesis of au, ag, and au–ag bimetallic nanoparticles using pulicaria undulata extract and their catalytic activity for the reduction of 4-nitrophenol
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7559643/
https://www.ncbi.nlm.nih.gov/pubmed/32962292
http://dx.doi.org/10.3390/nano10091885
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