@article{Li2015, 
author = {Yanrui Li and Leilei Li and Yunqi Gong and Song Bai and Huanxin Ju and Chengming Wang and Qian Xu and Junfa Zhu and Jun Jiang and Yujie Xiong},
title = {Towards full-spectrum photocatalysis: Achieving a Z-scheme between Ag2S and TiO2 by engineering energy band alignment with interfacial Ag},
year = {2015},
journal = {Nano Research},
volume = {8},
number = {11},
pages = {3621-3629},
keywords = {band structure, photocatalysis, water splitting, semiconductor, Z-scheme},
url = {https://www.sciopen.com/article/10.1007/s12274-015-0862-3},
doi = {10.1007/s12274-015-0862-3},
abstract = {A Z-scheme is a promising approach to achieve broad-spectrum photocatalysis. Integration of TiO2 with another semiconductor with a band gap of ~1.0 eV would be ideal to harvest both ultraviolet and visible-near infrared light for photocatalysis; however, most narrow-bandgap semiconductors have straddling band structure alignments with TiO2, constituting an obstacle to forming the Z-scheme for photocatalytic hydrogen production. In this communication, we demonstrate Ag2S as a model system where the energy band upshift of the narrow-bandgap semiconductor that shares an interface with a metal can overcome this limitation. To fabricate the design, we developed a unique approach to synthesize Ag2S–Ag–TiO2 hybrid structures. The obtained ternary hybrid structures exhibited dramatically enhanced performance in photocatalytic hydrogen production under full-spectrum light illumination. The activities were significantly higher than the sum of those of Ag2S–Ag–TiO2 structures under λ < 400 nm and λ > 400 nm irradiation as well as those of their counterparts under any light illumination conditions.}
}