Cargando…
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...
Autores principales: | , , , , , , , , , , , , |
---|---|
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 |
_version_ | 1783594907377598464 |
---|---|
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. |
format | Online Article Text |
id | pubmed-7559643 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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 |
work_keys_str_mv | AT khanmerajuddin synthesisofauagandauagbimetallicnanoparticlesusingpulicariaundulataextractandtheircatalyticactivityforthereductionof4nitrophenol AT alhamoudkhaleel synthesisofauagandauagbimetallicnanoparticlesusingpulicariaundulataextractandtheircatalyticactivityforthereductionof4nitrophenol AT liaqatzainab synthesisofauagandauagbimetallicnanoparticlesusingpulicariaundulataextractandtheircatalyticactivityforthereductionof4nitrophenol AT shaikmohammedrafi synthesisofauagandauagbimetallicnanoparticlesusingpulicariaundulataextractandtheircatalyticactivityforthereductionof4nitrophenol AT adilsyedfarooq synthesisofauagandauagbimetallicnanoparticlesusingpulicariaundulataextractandtheircatalyticactivityforthereductionof4nitrophenol AT kuniyilmufsir synthesisofauagandauagbimetallicnanoparticlesusingpulicariaundulataextractandtheircatalyticactivityforthereductionof4nitrophenol AT alkhathlanhamadz synthesisofauagandauagbimetallicnanoparticlesusingpulicariaundulataextractandtheircatalyticactivityforthereductionof4nitrophenol AT alwarthanabdulrahman synthesisofauagandauagbimetallicnanoparticlesusingpulicariaundulataextractandtheircatalyticactivityforthereductionof4nitrophenol AT siddiquimohammedrafiqh synthesisofauagandauagbimetallicnanoparticlesusingpulicariaundulataextractandtheircatalyticactivityforthereductionof4nitrophenol AT mondeshkimihail synthesisofauagandauagbimetallicnanoparticlesusingpulicariaundulataextractandtheircatalyticactivityforthereductionof4nitrophenol AT tremelwolfgang synthesisofauagandauagbimetallicnanoparticlesusingpulicariaundulataextractandtheircatalyticactivityforthereductionof4nitrophenol AT khanmujeeb synthesisofauagandauagbimetallicnanoparticlesusingpulicariaundulataextractandtheircatalyticactivityforthereductionof4nitrophenol AT tahirmuhammadnawaz synthesisofauagandauagbimetallicnanoparticlesusingpulicariaundulataextractandtheircatalyticactivityforthereductionof4nitrophenol |