2134/12327956.v1
Sophie Tarver
Sophie
Tarver
Daniel Gray
Daniel
Gray
Konstantin Loponov
Konstantin
Loponov
Diganta Das
Diganta
Das
Tao Sun
Tao
Sun
Maria Sotenko
Maria
Sotenko
Biomineralization of Pd nanoparticles using Phanerochaete chrysosporium as a sustainable approach to turn platinum group metals (PGMs) wastes into catalysts
Loughborough University
2020
Science & Technology
Life Sciences & Biomedicine
Biotechnology & Applied Microbiology
Environmental Sciences
Environmental Sciences & Ecology
WHITE-ROT FUNGUS
EXTRACELLULAR BIOSYNTHESIS
HETEROGENEOUS CATALYST
SILVER NANOPARTICLES
BACTERIAL BIOMASS
HEAVY-METALS
RECOVERY
BIOACCUMULATION
HYDROGENATION
Biotechnology
Biological Sciences
2020-05-20 10:49:49
Journal contribution
https://repository.lboro.ac.uk/articles/journal_contribution/Biomineralization_of_Pd_nanoparticles_using_Phanerochaete_chrysosporium_as_a_sustainable_approach_to_turn_platinum_group_metals_PGMs_wastes_into_catalysts/12327956
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 12ā48 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 gā1 of dried fungal biomass. Biomineralization of palladium from an aqueous solution led to the formation of extracellular well defined Pd nanoparticles of 10ā14 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.