![L-Lysine,N6-[2-[[(1,1-dimethylethoxy)carbonyl]amino]benzoyl]-N2-[(9H-fluoren-9-ylmethoxy)carbonyl]- structure](https://static.chemtradehub.com/structs/159/159322-59-5-c046.webp "L-Lysine,N6-[2-[[(1,1-dimethylethoxy)carbonyl]amino]benzoyl]-N2-[(9H-fluoren-9-ylmethoxy)carbonyl]- structure")
L-Lysine,N6-[2-[[(1,1-dimethylethoxy)carbonyl]amino]benzoyl]-N2-[(9H-fluoren-9-ylmethoxy)carbonyl]-
CAS Number:
159322-59-5
Molecular Formula:
C33H37N3O7
Porosity controls the catalytic activity of platinum nanoparticles
Literature Information
Publication Date
2019-09-04
DOI
10.1039/C9CP03887F
Impact Factor
3.676
Authors
Wenmiao Yu, Christopher Batchelor-McAuley, Xin Chang, Neil P. Young, Richard G. Compton
View Original
Abstract
Dendritic/mesoporous nanoparticle structures arise naturally and result from aggregation based growth mechanisms. The resulting porous particles exhibit high total surface areas (internal and external) but determining the magnitude of the interface remains challenging. Furthermore, assessing the chemical accessibility of the catalytic interface presents an additional difficulty. Taking three structurally related but different sized platinum nanoparticle samples (30–70 nm), we demonstrate how the catalytic rate of two archetypal surface limited reactions scale not with the square of the particle radius but with a power law of 2.6–2.9. This power law directly reflects the mesoporosity of the nanoparticles; the internal surface of the nanoparticles is both chemically accessible and contributes to the catalytic activity. For the 70 nm particles, up to 60% of the catalytic surface is contained in the internal structure of the particle.
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Source Journal
Physical Chemistry Chemical Physics
CiteScore:
5.5
Self-citation Rate:
10.3%
Articles per Year:
3036
Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.
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3-[7-Amino-3-(3-pyridinyl)pyrazolo[1,5-a]pyrimidin-6-yl]phenol
CAS Number:
861249-77-6
Molecular Formula:
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