@article{oai:repo.qst.go.jp:00086028,
 author = {Morihisa, Saeki and Daiju, Matsumura and Ryuzo, Nakanishi and Takumi, Yomogida and Takuya, Tsuji and Hiroyuki, Saito and Hironori, Oba and Morihisa, Saeki and Ryuzo, Nakanishi and Hiroyuki, Saito and Hironori, Oba},
 journal = {Journal of Physical Chemistry C},
 month = {Apr},
 note = {The reaction mechanism of the direct photoreduction of a Rh3+ ion complex to a Rh0 species induced by pulsed ultraviolet laser irradiation was studied using dispersive X-ray absorption fine structure (DXAFS) spectroscopy. The time-resolved X-ray absorption near edge structure (XANES) showed the absence of isosbestic points and suggested that more than two Rhn+ species contribute toward the direct photoreduction of Rh3+. Analysis of the time-resolved XANES data by singular value deposition showed that the direct photoreduction involves three Rhn+ species. Multivariate curve resolution by alternating least-squares analysis (MCR-ALS) of the time-resolved XANES data gave pure spectra and concentration profiles of the three Rhn+ species. The Rhn+ species were assigned to Rh3+, Rh+, and Rh0 species based on the features of the pure XANES spectra. The concentration profiles suggested that the direct photoreduction proceeds in the order of Rh3+ → Rh+ → Rh0. A reaction mechanism, which was proposed involving photoreductions of Rh3+ and Rh+, photoinduced autocatalytic reductions of Rh3+ and Rh+, and photooxidation of Rh+, well reproduced the concentration profiles of three Rhn+ species.},
 pages = {5607--5616},
 title = {Dispersive XAFS Study on the Laser-Induced Reduction of a Rh3+ Ion Complex: Presence of a Rh+ Intermediate in Direct Photoreduction},
 volume = {126},
 year = {2022}
}