Reactivity Control of Rhodium Cluster Ions by Alloying with Tantalum Atoms

The Journal of Physical Chemistry. a
Fumitaka MafunéSatoshi Kudoh

Abstract

Gas phase, bielement rhodium and tantalum clusters, RhnTam(+) (n + m = 6), were prepared by the double laser ablation of Rh and Ta rods in He carrier gas. The clusters were introduced into a reaction gas cell filled with nitric oxide (NO) diluted with He and were subjected to collisions with NO and He at room temperature. The product species were observed by mass spectrometry, demonstrating that the NO molecules were sequentially adsorbed on the RhnTam(+) clusters to form RhnTam(+)NxOx (x = 1, 2, 3, ...) species. In addition, oxide clusters, RhnTam(+)O2, were also observed, suggesting that the NO molecules were dissociatively adsorbed on the cluster, the N atoms migrated on the surface to form N2, and the N2 molecules were released from RhnTam(+)N2O2. The reactivity, leading to oxide formation, was composition dependent: oxide clusters were dominantly formed for the bielement clusters containing both Rh and Ta atoms, whereas such clusters were hardly formed for the single-element Rhn(+) and Tam(+) clusters. DFT calculations indicated that the Ta atoms induce dissociation of NO on the clusters by lowering the dissociation energy, whereas the Rh atoms enable release of N2 by lowering the binding energy of the N atoms on the clust...Continue Reading

References

Sep 15, 2006·The Journal of Physical Chemistry. B·D HardingT R Walsh
Sep 22, 2006·The Journal of Physical Chemistry. a·Marie L AndersonStuart R Mackenzie
Feb 9, 2008·Physical Chemistry Chemical Physics : PCCP·J S Loveday, R J Nelmes
Dec 3, 2008·The Journal of Chemical Physics·D J HardingT R Walsh
Mar 7, 2005·Physical Chemistry Chemical Physics : PCCP·M S FordS R Mackenzie
May 28, 2010·The Journal of Physical Chemistry. a·André FielickeGerard Meijer
Apr 12, 2013·The Journal of Physical Chemistry. a·Kazuko SakumaFumitaka Mafuné
Sep 6, 2013·The Journal of Physical Chemistry. a·Keisuke MoritaFumitaka Mafuné
Jun 11, 2014·The Journal of Physical Chemistry. a·Sandra M LangUzi Landman
Feb 5, 2015·The Journal of Physical Chemistry. a·Toshiaki NagataFumitaka Mafuné

❮ Previous
Next ❯

Citations

Feb 10, 2017·Physical Chemistry Chemical Physics : PCCP·J F EckhardU Heiz
Mar 21, 2017·The Journal of Physical Chemistry. a·Shinichi Hirabayashi, Masahiko Ichihashi
Jul 10, 2021·The Journal of Chemical Physics·Yan-Xia ZhaoSheng-Gui He

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.