Determination of growth regimes of Pd nanostructures on c-plane sapphire by the control of deposition amount at different annealing temperatures
Literature Information
Sundar Kunwar, Mao Sui, Puran Pandey, Quanzhen Zhang, Ming-Yu Li, Harish Bhandari, Jihoon Lee
Metallic nanoparticles (NPs) with tunable physical, optical and catalytic properties have a wide range of applications including various optoelectronics, sensors and fuel cells. In this paper, we demonstrate the evolution of various physical properties, configurations, size and density of palladium (Pd) nanostructures on sapphire(Al2O3) (0001) by the systematic control of deposition amount (DA) at distinct annealing temperatures. The transformation of the deposited thin films into various Pd NPs is achieved by the dewetting of the thin film by means of surface diffusion, nucleation, Volmer–Weber growth and surface energy minimization mechanism. Depending on the evolution of size, density and configuration, five distinctive regimes of Pd nanostructures are demonstrated: (i) nucleation and evolution of small NPs between 1 and 3 nm, (ii) medium NPs with the dominating vertical growth between 5 and 20 nm, (iii) laterally expanded large NPs between 30 and 40 nm, (iv) irregular coalesced Pd NPs between 50 and 80 nm and (v) voids evolution between 100 and 200 nm. Initial film thickness and annealing temperature play major roles on the dewetting process and the resulting Pd nanostructures are notably distinguished. The fabricated Pd nanostructures influence the lattice vibration modes of sapphire(0001) such as gradual decrement in the intensity and left-shift of the peak position with increased surface coverage. In addition, the optical properties are studied by UV-VIS-NIR (300–1100 nm) reflectance spectra, which shows the reflectance, absorption and scattering over the wavelength and are closely related to the morphology evolution of Pd nanostructures.
Related Literature
Relative reactivity and selectivity of vinyl sulfones and acrylates towards the thiol–Michael addition reaction and polymerization
Shunsuke Chatani, Devatha P. Nair, Christopher N. Bowman
DOI: 10.1039/C2PY20826A
Electron deficient conjugated polymers based on benzotriazole
James L. Banal, Jegadesan Subbiah, Hamish Graham, Jin-Kyun Lee, Kenneth P. Ghiggino, Wallace W. H. Wong
DOI: 10.1039/C2PY20850D
Modeling of RAFT polymerization of MMA in supercritical carbon dioxide using the PC-SAFT equation of state
Porfirio López-Domínguez, Jesús Eduardo Rivera-Peláez, Gabriel Jaramillo-Soto, José Fernando Barragán-Aroche
DOI: 10.1039/C9RE00461K
Functionalized linear low-density polyethylene by ring-opening metathesis polymerization
Shingo Kobayashi, Hyunwoo Kim, Christopher W. Macosko, Marc A. Hillmyer
DOI: 10.1039/C2PY20883K
The behavior and modelling of the vibrational-to-translational temperature ratio at long time scales in CO2 vibrational kinetics
Sergio H. Moreno, Andrzej I. Stankiewicz, Georgios D. Stefanidis
DOI: 10.1039/C9RE00255C
Optimization of the direct synthesis of dimethyl ether from CO2 rich synthesis gas: closing the loop between experimental investigations and model-based reactor design
Markus Kaiser, Karla Herrera Delgado, Stefan Wild, Jörg Sauer, Hannsjörg Freund
DOI: 10.1039/D0RE00041H
Visualization of the crucial step in SET-LRP
Martin E. Levere, Nga H. Nguyen, Xuefei Leng, Virgil Percec
DOI: 10.1039/C2PY21084C
Control of cationic epoxy polymerization by supramolecular initiation
Thomas Vidil, François Tournilhac, Ludwik Leibler
DOI: 10.1039/C2PY21140H
NH3-SCR of NO with novel active, supported vanadium-containing Keggin-type heteropolyacid catalysts
Anna Bukowski, Leonhard Schill, David Nielsen, Susanne Mossin, Anders Riisager, Jakob Albert
DOI: 10.1039/D0RE00033G
Macromolecular engineering viaring-opening polymerization (1): l-lactide/trimethylene carbonate block copolymers as thermoplastic elastomers
William Guerin, Jean-François Carpentier, Martine Slawinski, Jean-Michel Brusson, Sophie M. Guillaume
DOI: 10.1039/C2PY20859H
You might also like
What is Ethyl 3-cyclohexylpropanoate (CAS: 10094-36-7)?
Ethyl 3-cyclohexylpropanoate is a clear, colorless to light yellow liquid with a...
How should waste containing 2-(Hydroxymethyl)-5-(methoxycarbonyl)-6-methyl-4-(2-nitrophenyl)nicotinic acid (CAS: 34783-31-8) be handled?
Waste containing 2-(Hydroxymethyl)-5-(methoxycarbonyl)-6-methyl-4-(2-nitrophenyl...
How should waste containing 2,4,6-Tris(pentafluoroethyl)-1,3,5-triazine (CAS: 858-46-8) be handled?
Waste containing 2,4,6-Tris(pentafluoroethyl)-1,3,5-triazine (CAS: 858-46-8) sho...
What precautions should be taken when handling Chloroac-nle-oh (CAS: 56787-36-1)?
When handling Chloroac-nle-oh (CAS: 56787-36-1), it is essential to wear appropr...
What industries use Ethyl 6-phenylimidazo[2,1-b][1,3]thiazole-3-carboxylate (CAS: 752244-05-6)?
Ethyl 6-phenylimidazo[2,1-b][1,3]thiazole-3-carboxylate is primarily used in the...
Are there alternatives to alpha-(2-Bromophenyl)benzylamine (CAS: 55095-15-3) in synthesis?
Alternatives to alpha-(2-Bromophenyl)benzylamine (CAS: 55095-15-3) in synthesis ...
How should waste containing 2-Chloro-5-methoxypyridine (CAS: 139585-48-1) be handled?
Waste containing 2-Chloro-5-methoxypyridine (CAS: 139585-48-1) should be managed...
What industries use 1-(4-Methoxyphenyl)-2,5-dimethyl-1H-pyrrole (CAS: 5044-27-9)?
1-(4-Methoxyphenyl)-2,5-dimethyl-1H-pyrrole (CAS: 5044-27-9) is used in various ...
Are there alternatives to 3-Bromo-5-(N-Boc)aminomethylisoxazole (CAS: 903131-45-3) in synthesis?
There are alternative reagents and compounds that can be used in the synthesis o...
What is Tungsten(IV) oxide (CAS: 12036-22-5)?
Tungsten(IV) oxide, also known as tungsten dioxide, is a chemical compound with ...
Source Journal
Physical Chemistry Chemical Physics

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.












![2-Bromodibenzo[b,d]furan structure 2-Bromodibenzo[b,d]furan structure](https://static.chemtradehub.com/structs/86-/86-76-0-1814.webp)

