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Enhanced Photo-Electrochemical Responses through Photo-Responsive Ruthenium Complexes on ITO Nanoparticle Surface

Version 2 2024-06-02, 23:42
Version 1 2023-08-28, 05:28
journal contribution
posted on 2024-06-02, 23:42 authored by U Pratomo, Salmahaminati, M Abe, M Hada, S Wyantuti, HH Bahti, JY Mulyana
The mononuclear ruthenium 1-Cl and dinuclear ruthenium 2-Cl complexes undergo a photo-induced ligand exchange in water, affording the corresponding 1-H2O and 2-H2O complexes. The use of indium tin oxide nanoparticles (nanoITOs) to explore the photo-electrochemistry of the in situ-generated 1-H2O and 2-H2O in solution revealed greater photocurrents produced by these two complexes when compared with an experiment using a buffer only. Interestingly, the high photocurrent shown by the dinuclear complex 2-H2O was accompanied by the deposition of its higher oxidation state (H2O)RuII–RuIII(OH), as evidenced with cyclic voltammetry, SEM and XPS. The IPCE and spectro-electrochemistry studies supported by TD-DFT calculations revealed the visible light harvesting ability of 1-H2O and 2-H2O in solution and the subsequent electron injection into the conduction band of the nanoITOs, enhanced in 2-H2O via a plausible chelating effect.

History

Journal

Processes

Volume

11

Article number

2060

Pagination

1-16

Location

Basel, Switzerland

ISSN

2227-9717

eISSN

2227-9717

Language

en

Publication classification

C1 Refereed article in a scholarly journal

Issue

7

Publisher

MDPI AG

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