The fabrication of In2O3/In2S3/Ag nanocubes for efficient photoelectrochemical water splitting
Literature Information
Rui Xu, Haohua Li, Wenwen Zhang, Zepeng Yang, Guiwu Liu, Ziwei Xu, Haicheng Shao
In this work, for the first time, a three-component In2O3/In2S3/Ag nanocomposite heterostructured photoanode is prepared on a F-doped SnO2 (FTO) glass substrate. The three-component photoanode exhibits significantly enhanced photoelectrochemical properties compared with the single-component (In2O3) and two-component (In2O3/In2S3 or In2O3/Ag) systems. Ag nanoparticles deposited on the surface of In2O3/In2S3 nanocubes can facilitate the separation of photogenerated charge carriers and enhance the absorption of visible light. In I–V curves, the In2O3/In2S3/Ag photoanode generates a remarkable photocurrent density of 8.75 mA cm−2 (at 0 V vs. SCE), which is higher than those of the two-component In2O3/In2S3 (4.47 mA cm−2) and In2O3/Ag (3.50 mA cm−2). Furthermore, it also gives efficiency as high as 67% around 350 nm in the incident photon to electron conversion efficiency (IPCE) spectrum. These results open up a promising avenue for the design and fabrication of novel heterojunctions for photoelectrochemical water splitting.
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