<i>In situ</i> study of the thermal stability of supported Pt nanoparticles and their stabilization <i>via</i> atomic layer deposition overcoating

Solano, Eduardo; Dendooven, Jolien; Feng, Jianbo; Brüner, Philipp; Minjauw, Matthias; Ramachandran, Ranjith Karuparambil; Daele, Michiel Van; Kerckhove, Kevin Van de; Dobbelaere, Thomas; Coati, Alessandro; Hermida‐Merino, Daniel; Detavernier, Christophe

doi:10.1039/d0nr02444a

Cited by 10 publications

(15 citation statements)

References 35 publications

(48 reference statements)

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“…In situ synchrotron grazing incidence small angle X-ray scattering measurements revealed that the ALD Al 2 O 3 stabilizing layer successfully prevented Pt particle from coarsening during thermal annealing and improved the Pt surface accessibility. 87 A selective ALD method was developed to modify Pt NPs with nickel oxide (NiO x ) overcoating to improve the catalytic performance. 88 NiO x can be selectively deposited on the low coordination sites of the Pt NPs during the initial growth period.…”

Section: Applicationsmentioning

confidence: 99%

Surface modification and functionalization of powder materials by atomic layer deposition: a review

Lü

Feng

2021

RSC Adv.

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Section: Applicationsmentioning

confidence: 99%

Surface modification and functionalization of powder materials by atomic layer deposition: a review

Lü

Feng

2021

RSC Adv.

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“…Recent work done by Solano et al utilized ALD to fabricate Pt nanoparticle on a Si substrate to investigate nanoparticle thermal stability as a particle size function . Two different samples were prepared by depositing Pt via ALD using a nucleation regime of either O 2 or N 2 (N 2 *) plasma.…”

Section: Characterizationmentioning

confidence: 99%

Section: Characterizationmentioning

confidence: 99%

“…All of which can have unique interfacial interactions and surface chemistries based on the type of materials. Because of their complicated nature and 97 Two different samples were prepared by depositing Pt via ALD using a nucleation regime of either O 2 or N 2 (N 2 *) plasma. Each of the two samples contained an equal amount of Pt but varied in particle coverage and size.…”

Section: Characterizationmentioning

confidence: 99%

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Design and Characterization of ALD-Based Overcoats for Supported Metal Nanoparticle Catalysts

et al. 2021

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Supported metal nanoparticle (SMN) catalysts are enormously crucial for many catalytic applications. However, catalyst deactivation, caused by sintering and coke formation, is a ubiquitous problem that significantly undermines catalytic processing economics. The application of material overcoating onto supported metal nanoparticles by atomic layer deposition (ALD) offers the solution to inhibit catalyst deactivation. Herein, we discuss examples in which ALD has been used to stabilize SMN catalysts in gaseous and aqueous-phase reactions. We highlight the ALD tools and methods in coating high-surface-area catalysts. Besides, various techniques are introduced to understand better how to characterize the overcoating layer and the catalyst itself. Finally, the outlook for new techniques to characterize the ALD overcoated catalytic materials is discussed.

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“…3j). The negative charge on the surface of NPs has better stability in circulatory system in vivo [31,32]. The LE of PHBV-PTX-NPs, PDA-PHBV-PTX-NPs and RGD-PDA-PHBV-PTX-NPs were 21.48% ± 0.83%, 15.33% ± 0.74% and 14.21% ± 0.66%, respectively.…”

Section: Particle Morphology Size and Zeta Potentialmentioning

confidence: 99%

pH-responsive delivery vehicle based on RGD-modified polydopamine-paclitaxel-loaded poly (3-hydroxybutyrate-co-3-hydroxyvalerate) nanoparticles for targeted therapy in hepatocellular carcinoma

Chen

Zhang

et al. 2021

J Nanobiotechnol

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A limitation of current anticancer nanocarriers is the contradiction between multiple functions and favorable biocompatibility. Thus, we aimed to develop a compatible drug delivery system loaded with paclitaxel (PTX) for hepatocellular carcinoma (HCC) therapy. A basic backbone, PTX-loaded poly (3-hydroxybutyrate-co-3-hydroxyvalerate) PHBV nanoparticle (PHBV-PTX-NPs), was prepared by emulsion solvent evaporation. As a gatekeeper, the pH-sensitive coating was formed by self-polymerization of dopamine (PDA). The HCC-targeted arginine-glycine-aspartic acid (RGD)-peptide and PDA-coated nanoparticles (NPs) were combined through the Michael addition. Subsequently, the physicochemical properties of RGD-PDA-PHBV-PTX-NPs were characterized by dynamic light scattering-autosizer, transmission electron microscope, fourier transform infrared spectroscopy, differential scanning calorimetry, thermogravimetry and X-ray spectroscopy. As expected, the RGD-PDA-PHBV-PTX-NPs showed robust anticancer efficacy in a xenograft mouse model. More importantly, they exhibited lower toxicity than PTX to normal hepatocytes and mouse in vitro and in vivo, respectively. Taken together, these results indicate that the RGD-PDA-PHBV-PTX-NPs are potentially beneficial for easing conflict between multifunction and biocompatible characters of nanocarriers.

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In situ study of the thermal stability of supported Pt nanoparticles and their stabilization via atomic layer deposition overcoating

Abstract: Supported Pt nanoparticle stabilization via Atomic Layer Deposition overcoating with Al2O3 has been proved to prevent particle coarsening during thermal annealing for widely spaced nanoparticles while ensuring surface accessibility for applications.

Cited by 10 publications

References 35 publications

Surface modification and functionalization of powder materials by atomic layer deposition: a review

Surface modification and functionalization of powder materials by atomic layer deposition: a review

Design and Characterization of ALD-Based Overcoats for Supported Metal Nanoparticle Catalysts

pH-responsive delivery vehicle based on RGD-modified polydopamine-paclitaxel-loaded poly (3-hydroxybutyrate-co-3-hydroxyvalerate) nanoparticles for targeted therapy in hepatocellular carcinoma

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