June2019_MS_Pd fungi paper manuscript_JBB_subm_after review.pdf (698.14 kB)

Biomineralization of Pd nanoparticles using Phanerochaete chrysosporium as a sustainable approach to turn platinum group metals (PGMs) wastes into catalysts

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journal contribution
posted on 20.05.2020 by Sophie Tarver, Daniel Gray, Konstantin Loponov, Diganta Das, Tao Sun, Maria Sotenko
Due to the increasing demand for recovery of precious metals from waste streams, the role of fungus as a potential adsorbent is growing. Thus, this research aimed to develop a novel method for the biomineralization of palladium nanoparticles using Phanerochaete chrysosporium fungus. The adsorption of palladium onto the fungal mycelium was studied by adding palladium salt at 12–48 ppm to the fermentation medium following the fungal growth. Amide groups of chitin and proteins on the surface of the fungus are believed to coordinate palladium cations yielding Freundlich-type competitive adsorption isotherm. The adsorption capacity was found to reach 22-128 mgPd g−1 of dried fungal biomass. Biomineralization of palladium from an aqueous solution led to the formation of extracellular well defined Pd nanoparticles of 10–14 nm confirmed by XPS, TEM and XRD analyses. The biologically synthesised nanoparticles were found to perform equally well to a Pd/C commercial catalyst in a Heck reaction of styrene and iodobenzene. This is the first reported use of Phanerochaete chrysosporium to synthesise palladium nanoparticles and confirmation of their resulting catalytic activity. The presented example paves the way for the development of fungi-based membranes to be used in the palladium recovery from industrial effluents.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Published in

International Biodeterioration & Biodegradation

Volume

143

Issue

September 2019

Publisher

Elsevier

Version

AM (Accepted Manuscript)

Rights holder

© Elsevier Ltd

Publisher statement

This paper was accepted for publication in the journal International Biodeterioration & Biodegradation and the definitive published version is available at https://doi.org/10.1016/j.ibiod.2019.104724.

Acceptance date

21/06/2019

Publication date

2019-07-03

Copyright date

2019

ISSN

0964-8305

eISSN

1879-0208

Language

en

Depositor

Dr Diganta Das. Deposit date: 19 May 2020

Article number

104724

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