Biogenic Platinum Nanoparticles’ Production by Extremely Acidophilic Fe(III)-Reducing Bacteria

Platinum nanoparticles (Pt(0)NPs) are expected to play a vital role in future technologies as high-performance catalysts. The microbiological route for Pt(0)NPs’ production is considered a greener and simpler alternative to conventional methods. In order to explore the potential utility of extreme a...

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Auteurs principaux:	Takahiro Matsumoto, Idol Phann, Naoko Okibe
Format:	article
Langue:	EN
Publié:	MDPI AG 2021
Sujets:	platinum nanoparticles extreme acidophiles Fe(III)-reducing bacteria <i>Acidocella</i> sp. <i>Acidiphilium</i> sp. Mineralogy QE351-399.2
Accès en ligne:	https://doaj.org/article/ff5f6dc5c2ce485aa3bc3e77e5bbd2c8
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spelling	oai:doaj.org-article:ff5f6dc5c2ce485aa3bc3e77e5bbd2c82021-11-25T18:25:59ZBiogenic Platinum Nanoparticles’ Production by Extremely Acidophilic Fe(III)-Reducing Bacteria10.3390/min111111752075-163Xhttps://doaj.org/article/ff5f6dc5c2ce485aa3bc3e77e5bbd2c82021-10-01T00:00:00Zhttps://www.mdpi.com/2075-163X/11/11/1175https://doaj.org/toc/2075-163XPlatinum nanoparticles (Pt(0)NPs) are expected to play a vital role in future technologies as high-performance catalysts. The microbiological route for Pt(0)NPs’ production is considered a greener and simpler alternative to conventional methods. In order to explore the potential utility of extreme acidophiles, Fe(III)-reducing acidophilic bacteria, <i>Acidocella aromatica</i> and <i>Acidiphilium crytpum,</i> were tested for the production of bio-Pt(0)NPs from an acidic solution. Bio-Pt(0)NPs were successfully formed via a simple one-step reaction with the difference in the size and location between the two strains. Intact enzymatic activity was essential to exhibit the site for Pt(0) crystal nucleation, which enables the formation of well-dispersed, fine bio-Pt(0)NPs. Active <i>Ac. aromatica</i> cells produced the finest bio-Pt(0)NPs of mean and median size of 16.1 and 8.5 nm, respectively. The catalytic activity of bio-Pt(0)NPs was assessed using the Cr(VI) reduction reaction, which was shown to be in a negative linear correlation with the mean particle size under the conditions tested. This is the first study reporting the recruitment of acidophilic extremophiles for the production of Pt(0)NPs. Acidophilic extremophiles often inhabit metal-rich acidic liquors in nature and are expected to become the promising tool for metal nanotechnology.Takahiro MatsumotoIdol PhannNaoko OkibeMDPI AGarticleplatinumnanoparticlesextreme acidophilesFe(III)-reducing bacteria<i>Acidocella</i> sp.<i>Acidiphilium</i> sp.MineralogyQE351-399.2ENMinerals, Vol 11, Iss 1175, p 1175 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	platinum nanoparticles extreme acidophiles Fe(III)-reducing bacteria <i>Acidocella</i> sp. <i>Acidiphilium</i> sp. Mineralogy QE351-399.2
spellingShingle	platinum nanoparticles extreme acidophiles Fe(III)-reducing bacteria <i>Acidocella</i> sp. <i>Acidiphilium</i> sp. Mineralogy QE351-399.2 Takahiro Matsumoto Idol Phann Naoko Okibe Biogenic Platinum Nanoparticles’ Production by Extremely Acidophilic Fe(III)-Reducing Bacteria
description	Platinum nanoparticles (Pt(0)NPs) are expected to play a vital role in future technologies as high-performance catalysts. The microbiological route for Pt(0)NPs’ production is considered a greener and simpler alternative to conventional methods. In order to explore the potential utility of extreme acidophiles, Fe(III)-reducing acidophilic bacteria, <i>Acidocella aromatica</i> and <i>Acidiphilium crytpum,</i> were tested for the production of bio-Pt(0)NPs from an acidic solution. Bio-Pt(0)NPs were successfully formed via a simple one-step reaction with the difference in the size and location between the two strains. Intact enzymatic activity was essential to exhibit the site for Pt(0) crystal nucleation, which enables the formation of well-dispersed, fine bio-Pt(0)NPs. Active <i>Ac. aromatica</i> cells produced the finest bio-Pt(0)NPs of mean and median size of 16.1 and 8.5 nm, respectively. The catalytic activity of bio-Pt(0)NPs was assessed using the Cr(VI) reduction reaction, which was shown to be in a negative linear correlation with the mean particle size under the conditions tested. This is the first study reporting the recruitment of acidophilic extremophiles for the production of Pt(0)NPs. Acidophilic extremophiles often inhabit metal-rich acidic liquors in nature and are expected to become the promising tool for metal nanotechnology.
format	article
author	Takahiro Matsumoto Idol Phann Naoko Okibe
author_facet	Takahiro Matsumoto Idol Phann Naoko Okibe
author_sort	Takahiro Matsumoto
title	Biogenic Platinum Nanoparticles’ Production by Extremely Acidophilic Fe(III)-Reducing Bacteria
title_short	Biogenic Platinum Nanoparticles’ Production by Extremely Acidophilic Fe(III)-Reducing Bacteria
title_full	Biogenic Platinum Nanoparticles’ Production by Extremely Acidophilic Fe(III)-Reducing Bacteria
title_fullStr	Biogenic Platinum Nanoparticles’ Production by Extremely Acidophilic Fe(III)-Reducing Bacteria
title_full_unstemmed	Biogenic Platinum Nanoparticles’ Production by Extremely Acidophilic Fe(III)-Reducing Bacteria
title_sort	biogenic platinum nanoparticles’ production by extremely acidophilic fe(iii)-reducing bacteria
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/ff5f6dc5c2ce485aa3bc3e77e5bbd2c8
work_keys_str_mv	AT takahiromatsumoto biogenicplatinumnanoparticlesproductionbyextremelyacidophilicfeiiireducingbacteria AT idolphann biogenicplatinumnanoparticlesproductionbyextremelyacidophilicfeiiireducingbacteria AT naokookibe biogenicplatinumnanoparticlesproductionbyextremelyacidophilicfeiiireducingbacteria
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Biogenic Platinum Nanoparticles’ Production by Extremely Acidophilic Fe(III)-Reducing Bacteria

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