Investigation of the local structure of nanosized rhodium hydride.

Title	Investigation of the local structure of nanosized rhodium hydride.
Authors	C. Zlotea; L. Blondeau; A. Malouche; J. Bourgon; K. Provost; F. Morfin; L. Piccolo
Journal	J Colloid Interface Sci
DOI	10.1016/j.jcis.2018.04.047
Abstract	The local structure and the thermal stability of small and well-dispersed RhH nanoparticles (average size of 1.4?nm) were studied by in situ X-ray Absorption Spectroscopy. The RhH nanoparticles are stable at room temperature and undergo a structural transition from hydride (fcc) to metal phase (fcc) with a shrinking of the lattice volume due to the desorption of hydrogen. This phase transition occurs in the temperature range of 150-180?°C, in good agreement with the results from thermo-desorption spectroscopy. Above 180?°C, the desorbed nanoparticles undertake important coalescence. In situ transmission electron microscopy performed up to 300?°C proves that this process cannot be only thermal, thus it may be ascribed to a X-ray beam effect.
Citation	C. Zlotea; L. Blondeau; A. Malouche; J. Bourgon; K. Provost; F. Morfin; L. Piccolo.Investigation of the local structure of nanosized rhodium hydride.. J Colloid Interface Sci. 2018;524:427433. doi:10.1016/j.jcis.2018.04.047

Related Elements

Rhodium

45 Rh 102.905500000 Rhodium

See more Rhodium products. Rhodium (atomic symbol: Rh, atomic number: 45) is a Block D, Group 9, Period 5 element with an atomic weight of 102.90550. Rhodium Bohr Model The number of electrons in each of Rhodium's shells is [2, 8, 18, 16, 1] and its electron configuration is [Kr] 4d⁸ 5s¹. The rhodium atom has a radius of 134 pm and a Van der Waals radius of 195 pm. Rhodium was discovered and first isolated by William Wollaston in 1804. In its elemental form, rhodium has a silvery white metallic appearance. Elemental Rhodium Rhodium is a member of the platinum group of metals. It has a higher melting point than platinum, but a lower density. Rhodium is found in ores mixed with other metals such as palladium, silver, platinum, and gold. Rhodium is primarily used as the catalyst in the three-way catalytic converters of automobiles it is also highly valued in jewelry. The name Rhodium originates from the Greek word 'Rhodon,' which means rose.