期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 5, 期 19, 页码 9198-9203出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta00818j
关键词
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资金
- Program for NCET in University [NCET-13-0754]
- Harbin Youth Fund [RC2013XK017003, RC2014QN017004]
- Fundamental Research fund for the Central Universities
- Youth Fund of Heilongjiang Province [QC2014C006]
- Natural Science Foundation of Heilongjiang Province [B201603]
The production and storage of hydrogen are the two most critical challenges for hydrogen energy development. In addition, converting H-2 from the as-obtained gas state to a stable storage state consumes excess energy and increases the practical cost of hydrogen fuel. Accordingly, we now present a simple hybrid material system (Co/TiO2) that efficiently synchronizes hydrogen photogeneration in water with its room-temperature storage. In the composite, through a series of carefully controlled experiments, ultrathin Co shells composed of 1, 2, 4, and 9 atom layers have been fabricated on TiO2 photocatalysts. Before saturation of hydrogen on metal Co, the hydrogen storage efficiency is close to 100%, meaning that nearly all hydrogen generated by photocatalytic water splitting is conserved. This work provides a new approach to combined structure-function design technology in the hydrogen energy field.
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