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- W2914970090 abstract "Improving the separation efficiency of photogenerated electron–hole pairs and the conductivity of electrons to photoanode substrates are critical to achieve high-performance photoelectrochemical (PEC) water splitting. Here, a SnS2/H-TiO2/Ti heterojunction photoanode was fabricated with SnS2 nanosheets vertically grown on hydrogen-treated TiO2 (H-TiO2) nanotube arrays on a Ti substrate. It showed a significantly enhanced photocurrent of 4.0 mA cm−2 at 1.4 V (vs. reversible hydrogen electrode) under AM 1.5 G illumination, 70 times higher than that of SnS2/TiO2/Ti. Kelvin probe force microscopy measurements indicated that photogenerated electrons could be easily transported through the SnS2/H-TiO2 interface but not through the SnS2/TiO2 interface. Through hydrogen treatment, defects were created in H-TiO2 nanotubes to convert type I junctions to type II with SnS2 nanosheets. As a result, a high efficiency of electron–hole separation at the SnS2/H-TiO2 interface and a high electron conductivity in H-TiO2 nanotubes were achieved and improved PEC performance. These findings show an effective route towards high-performance photoelectrodes for water splitting." @default.
- W2914970090 created "2019-02-21" @default.
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- W2914970090 date "2019-02-04" @default.
- W2914970090 modified "2023-10-01" @default.
- W2914970090 title "SnS <sub>2</sub> Nanosheets/H‐TiO <sub>2</sub> Nanotube Arrays as a Type II Heterojunctioned Photoanode for Photoelectrochemical Water Splitting" @default.
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- W2914970090 doi "https://doi.org/10.1002/cssc.201802691" @default.
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