Synthesis of Au, Ag, and Au–Ag Bimetallic Nanoparticles Using Pulicaria undulata Extract and Their Catalytic Activity for the Reduction of 4-Nitrophenol.
Saved in:
| Title: | Synthesis of Au, Ag, and Au–Ag Bimetallic Nanoparticles Using Pulicaria undulata Extract and Their Catalytic Activity for the Reduction of 4-Nitrophenol. |
|---|---|
| Authors: | Khan, Merajuddin1 (AUTHOR) mkhan3@ksu.edu.sa, Al-hamoud, Khaleel1 (AUTHOR) khaleel727244@gmail.com, Liaqat, Zainab2 (AUTHOR) lizainab@uni-mainz.de, Shaik, Mohammed Rafi1 (AUTHOR) mrshaik@ksu.edu.sa, Adil, Syed Farooq1 (AUTHOR) sfadil@ksu.edu.sa, Kuniyil, Mufsir1 (AUTHOR) mkuniyil@ksu.edu.sa, Alkhathlan, Hamad Z.1 (AUTHOR) khathlan@ksu.edu.sa, Al-Warthan, Abdulrahman1 (AUTHOR) awarthan@ksu.edu.sa, Siddiqui, Mohammed Rafiq H.1 (AUTHOR) rafiqs@ksu.edu.sa, Mondeshki, Mihail2 (AUTHOR) mondeshk@uni-mainz.de, Tremel, Wolfgang2 (AUTHOR) tremel@uni-mainz.de, Khan, Mujeeb1 (AUTHOR) tremel@uni-mainz.de, Tahir, Muhammad Nawaz3 (AUTHOR) tremel@uni-mainz.de |
| Source: | Nanomaterials (2079-4991). Sep2020, Vol. 10 Issue 9, p1885. 1p. |
| Subjects: | Bimetallic catalysts, Catalytic activity, Catalytic reduction, Plant extracts, Silver alloys, Silver phosphates, Stabilizing agents, Nanoparticles |
| Abstract: | 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. [ABSTRACT FROM AUTHOR] |
| Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| Abstract: | 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. [ABSTRACT FROM AUTHOR] |
|---|---|
| ISSN: | 20794991 |
| DOI: | 10.3390/nano10091885 |
