Biotechnological synthesis of Pd/Ag and Pd/Au nanoparticles for enhanced Suzuki–Miyaura cross‐coupling activity

Summary Bimetallic nanoparticle catalysts have attracted considerable attention due to their unique chemical and physical properties. The ability of metal‐reducing bacteria to produce highly catalytically active monometallic nanoparticles is well known; however, the properties and catalytic activity...

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Autores principales:	Richard L. Kimber, Fabio Parmeggiani, Thomas S. Neill, Mohamed L. Merroun, Gregory Goodlet, Nigel A. Powell, Nicholas J. Turner, Jonathan R. Lloyd
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	Biotechnology TP248.13-248.65
Acceso en línea:	https://doaj.org/article/89e7f59aff9d4d008cc4a76ebf833439
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spelling	oai:doaj.org-article:89e7f59aff9d4d008cc4a76ebf8334392021-11-18T15:39:52ZBiotechnological synthesis of Pd/Ag and Pd/Au nanoparticles for enhanced Suzuki–Miyaura cross‐coupling activity1751-791510.1111/1751-7915.13762https://doaj.org/article/89e7f59aff9d4d008cc4a76ebf8334392021-11-01T00:00:00Zhttps://doi.org/10.1111/1751-7915.13762https://doaj.org/toc/1751-7915Summary Bimetallic nanoparticle catalysts have attracted considerable attention due to their unique chemical and physical properties. The ability of metal‐reducing bacteria to produce highly catalytically active monometallic nanoparticles is well known; however, the properties and catalytic activity of bimetallic nanoparticles synthesized with these organisms is not well understood. Here, we report the one‐pot biosynthesis of Pd/Ag (bio‐Pd/Ag) and Pd/Au (bio‐Pd/Au) nanoparticles using the metal‐reducing bacterium, Shewanella oneidensis, under mild conditions. Energy dispersive X‐ray analyses performed using scanning transmission electron microscopy (STEM) revealed the presence of both metals (Pd/Ag or Pd/Au) in the biosynthesized nanoparticles. X‐ray absorption near‐edge spectroscopy (XANES) suggested a significant contribution from Pd(0) and Pd(II) in both bio‐Pd/Ag and bio‐Pd/Au, with Ag and Au existing predominately as their metallic forms. Extended X‐ray absorption fine‐structure spectroscopy (EXAFS) supported the presence of multiple Pd species in bio‐Pd/Ag and bio‐Pd/Au, as inferred from Pd–Pd, Pd–O and Pd–S shells. Both bio‐Pd/Ag and bio‐Pd/Au demonstrated greatly enhanced catalytic activity towards Suzuki–Miyaura cross‐coupling compared to a monometallic Pd catalyst, with bio‐Pd/Ag significantly outperforming the others. The catalysts were very versatile, tolerating a wide range of substituents. This work demonstrates a green synthesis method for novel bimetallic nanoparticles that display significantly enhanced catalytic activity compared to their monometallic counterparts.Richard L. KimberFabio ParmeggianiThomas S. NeillMohamed L. MerrounGregory GoodletNigel A. PowellNicholas J. TurnerJonathan R. LloydWileyarticleBiotechnologyTP248.13-248.65ENMicrobial Biotechnology, Vol 14, Iss 6, Pp 2435-2447 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biotechnology TP248.13-248.65
spellingShingle	Biotechnology TP248.13-248.65 Richard L. Kimber Fabio Parmeggiani Thomas S. Neill Mohamed L. Merroun Gregory Goodlet Nigel A. Powell Nicholas J. Turner Jonathan R. Lloyd Biotechnological synthesis of Pd/Ag and Pd/Au nanoparticles for enhanced Suzuki–Miyaura cross‐coupling activity
description	Summary Bimetallic nanoparticle catalysts have attracted considerable attention due to their unique chemical and physical properties. The ability of metal‐reducing bacteria to produce highly catalytically active monometallic nanoparticles is well known; however, the properties and catalytic activity of bimetallic nanoparticles synthesized with these organisms is not well understood. Here, we report the one‐pot biosynthesis of Pd/Ag (bio‐Pd/Ag) and Pd/Au (bio‐Pd/Au) nanoparticles using the metal‐reducing bacterium, Shewanella oneidensis, under mild conditions. Energy dispersive X‐ray analyses performed using scanning transmission electron microscopy (STEM) revealed the presence of both metals (Pd/Ag or Pd/Au) in the biosynthesized nanoparticles. X‐ray absorption near‐edge spectroscopy (XANES) suggested a significant contribution from Pd(0) and Pd(II) in both bio‐Pd/Ag and bio‐Pd/Au, with Ag and Au existing predominately as their metallic forms. Extended X‐ray absorption fine‐structure spectroscopy (EXAFS) supported the presence of multiple Pd species in bio‐Pd/Ag and bio‐Pd/Au, as inferred from Pd–Pd, Pd–O and Pd–S shells. Both bio‐Pd/Ag and bio‐Pd/Au demonstrated greatly enhanced catalytic activity towards Suzuki–Miyaura cross‐coupling compared to a monometallic Pd catalyst, with bio‐Pd/Ag significantly outperforming the others. The catalysts were very versatile, tolerating a wide range of substituents. This work demonstrates a green synthesis method for novel bimetallic nanoparticles that display significantly enhanced catalytic activity compared to their monometallic counterparts.
format	article
author	Richard L. Kimber Fabio Parmeggiani Thomas S. Neill Mohamed L. Merroun Gregory Goodlet Nigel A. Powell Nicholas J. Turner Jonathan R. Lloyd
author_facet	Richard L. Kimber Fabio Parmeggiani Thomas S. Neill Mohamed L. Merroun Gregory Goodlet Nigel A. Powell Nicholas J. Turner Jonathan R. Lloyd
author_sort	Richard L. Kimber
title	Biotechnological synthesis of Pd/Ag and Pd/Au nanoparticles for enhanced Suzuki–Miyaura cross‐coupling activity
title_short	Biotechnological synthesis of Pd/Ag and Pd/Au nanoparticles for enhanced Suzuki–Miyaura cross‐coupling activity
title_full	Biotechnological synthesis of Pd/Ag and Pd/Au nanoparticles for enhanced Suzuki–Miyaura cross‐coupling activity
title_fullStr	Biotechnological synthesis of Pd/Ag and Pd/Au nanoparticles for enhanced Suzuki–Miyaura cross‐coupling activity
title_full_unstemmed	Biotechnological synthesis of Pd/Ag and Pd/Au nanoparticles for enhanced Suzuki–Miyaura cross‐coupling activity
title_sort	biotechnological synthesis of pd/ag and pd/au nanoparticles for enhanced suzuki–miyaura cross‐coupling activity
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/89e7f59aff9d4d008cc4a76ebf833439
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Biotechnological synthesis of Pd/Ag and Pd/Au nanoparticles for enhanced Suzuki–Miyaura cross‐coupling activity

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