Novel catalytically active Pd/Ru bimetallic nanoparticles synthesized by Bacillus benzeovorans

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Novel catalytically active Pd/Ru bimetallic nanoparticles synthesized by Bacillus benzeovorans. / Omajali, Jacob; Gomez-bolivar, Jaime; Mikheenko, Iryna; Sharma, Surbhi; Kayode, Bayonle; Al-Duri, Bushra; Banerjee, Dipanjan; Walker, Marc; Merroun, Mohamed L.; Macaskie, Lynne.

In: Scientific Reports, Vol. 9, No. 1, 4715, 18.03.2019.

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Omajali, Jacob ; Gomez-bolivar, Jaime ; Mikheenko, Iryna ; Sharma, Surbhi ; Kayode, Bayonle ; Al-Duri, Bushra ; Banerjee, Dipanjan ; Walker, Marc ; Merroun, Mohamed L. ; Macaskie, Lynne. / Novel catalytically active Pd/Ru bimetallic nanoparticles synthesized by Bacillus benzeovorans. In: Scientific Reports. 2019 ; Vol. 9, No. 1.

Bibtex

@article{34a2471bcc314a4b9c093900675b0cb3,
title = "Novel catalytically active Pd/Ru bimetallic nanoparticles synthesized by Bacillus benzeovorans",
abstract = "Bacillus benzeovorans assisted and supported growth of ruthenium (bio-Ru) and palladium/ruthenium (bio-Pd@Ru) core@shell nanoparticles (NPs) as bio-derived catalysts. Characterization of the bio-NPs using various electron microscopy techniques and high-angle annular dark field (HAADF) analysis confirmed two NP populations (1–2 nm and 5–8 nm), with core@shells in the latter. The Pd/Ru NP lattice fringes, 0.231 nm, corresponded to the (110) plane of RuO2. While surface characterization using X-ray photoelectron spectroscopy (XPS) showed the presence of Pd(0), Pd(II), Ru(III) and Ru(VI), X-ray absorption (XAS) studies of the bulk material confirmed the Pd speciation (Pd(0) and Pd(II)- corresponding to PdO), and identified Ru as Ru(III) and Ru(IV). The absence of Ru–Ru or Ru–Pd peaks indicated Ru only exists in oxide forms (RuO2 and RuOH), which are surface-localized. X ray diffraction (XRD) patterns did not identify Pd-Ru alloying. Preliminary catalytic studies explored the conversion of 5-hydroxymethyl furfural (5-HMF) to the fuel precursor 2,5-dimethyl furan (2,5-DMF). Both high-loading (9.7 wt.% Pd, 6 wt.% Ru) and low-loading (2.4 wt.% Pd, 2 wt.% Ru) bio-derived catalysts demonstrated high conversion efficiencies (~95%) and selectivity of ~63% (~20% better than bio-Ru NPs) and 58%, respectively. These materials show promising future scope as efficient low-cost biofuel catalysts.",
author = "Jacob Omajali and Jaime Gomez-bolivar and Iryna Mikheenko and Surbhi Sharma and Bayonle Kayode and Bushra Al-Duri and Dipanjan Banerjee and Marc Walker and Merroun, {Mohamed L.} and Lynne Macaskie",
year = "2019",
month = mar,
day = "18",
doi = "10.1038/s41598-019-40312-3",
language = "English",
volume = "9",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",
number = "1",

}

RIS

TY - JOUR

T1 - Novel catalytically active Pd/Ru bimetallic nanoparticles synthesized by Bacillus benzeovorans

AU - Omajali, Jacob

AU - Gomez-bolivar, Jaime

AU - Mikheenko, Iryna

AU - Sharma, Surbhi

AU - Kayode, Bayonle

AU - Al-Duri, Bushra

AU - Banerjee, Dipanjan

AU - Walker, Marc

AU - Merroun, Mohamed L.

AU - Macaskie, Lynne

PY - 2019/3/18

Y1 - 2019/3/18

N2 - Bacillus benzeovorans assisted and supported growth of ruthenium (bio-Ru) and palladium/ruthenium (bio-Pd@Ru) core@shell nanoparticles (NPs) as bio-derived catalysts. Characterization of the bio-NPs using various electron microscopy techniques and high-angle annular dark field (HAADF) analysis confirmed two NP populations (1–2 nm and 5–8 nm), with core@shells in the latter. The Pd/Ru NP lattice fringes, 0.231 nm, corresponded to the (110) plane of RuO2. While surface characterization using X-ray photoelectron spectroscopy (XPS) showed the presence of Pd(0), Pd(II), Ru(III) and Ru(VI), X-ray absorption (XAS) studies of the bulk material confirmed the Pd speciation (Pd(0) and Pd(II)- corresponding to PdO), and identified Ru as Ru(III) and Ru(IV). The absence of Ru–Ru or Ru–Pd peaks indicated Ru only exists in oxide forms (RuO2 and RuOH), which are surface-localized. X ray diffraction (XRD) patterns did not identify Pd-Ru alloying. Preliminary catalytic studies explored the conversion of 5-hydroxymethyl furfural (5-HMF) to the fuel precursor 2,5-dimethyl furan (2,5-DMF). Both high-loading (9.7 wt.% Pd, 6 wt.% Ru) and low-loading (2.4 wt.% Pd, 2 wt.% Ru) bio-derived catalysts demonstrated high conversion efficiencies (~95%) and selectivity of ~63% (~20% better than bio-Ru NPs) and 58%, respectively. These materials show promising future scope as efficient low-cost biofuel catalysts.

AB - Bacillus benzeovorans assisted and supported growth of ruthenium (bio-Ru) and palladium/ruthenium (bio-Pd@Ru) core@shell nanoparticles (NPs) as bio-derived catalysts. Characterization of the bio-NPs using various electron microscopy techniques and high-angle annular dark field (HAADF) analysis confirmed two NP populations (1–2 nm and 5–8 nm), with core@shells in the latter. The Pd/Ru NP lattice fringes, 0.231 nm, corresponded to the (110) plane of RuO2. While surface characterization using X-ray photoelectron spectroscopy (XPS) showed the presence of Pd(0), Pd(II), Ru(III) and Ru(VI), X-ray absorption (XAS) studies of the bulk material confirmed the Pd speciation (Pd(0) and Pd(II)- corresponding to PdO), and identified Ru as Ru(III) and Ru(IV). The absence of Ru–Ru or Ru–Pd peaks indicated Ru only exists in oxide forms (RuO2 and RuOH), which are surface-localized. X ray diffraction (XRD) patterns did not identify Pd-Ru alloying. Preliminary catalytic studies explored the conversion of 5-hydroxymethyl furfural (5-HMF) to the fuel precursor 2,5-dimethyl furan (2,5-DMF). Both high-loading (9.7 wt.% Pd, 6 wt.% Ru) and low-loading (2.4 wt.% Pd, 2 wt.% Ru) bio-derived catalysts demonstrated high conversion efficiencies (~95%) and selectivity of ~63% (~20% better than bio-Ru NPs) and 58%, respectively. These materials show promising future scope as efficient low-cost biofuel catalysts.

U2 - 10.1038/s41598-019-40312-3

DO - 10.1038/s41598-019-40312-3

M3 - Article

VL - 9

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

IS - 1

M1 - 4715

ER -