期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 257, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2019.117908
关键词
Infrared light induced photocatalytic overall water splitting; NIR-to-visible up-conversion; CdS catalyst; NYF upconversion component; Inhibition of hydrogen and oxygen recombination
资金
- China National Key Research and Development Plan Project [2018YFB1502000]
- NSF of China [21433007, 21673262]
Solar irradiation spectrum on the earth consists of about 50% infrared energy, which has not used effectively in chemical storage and conversion into hydrogen via photocatalytic route. In this work, we reported the catalytic hydrogen generation over a photocatalyst consisting of semiconductor CdS and an up-conversion component NaYF4-Yb3+-Er3+ (NYF) under infrared light irradiation. Under 980 nm laser irradiation, the input infrared light was up-converted into visible light, which was used to excite CdS to produce hydrogen and oxygen. The isotope experiments confirmed both of hydrogen and oxygen were produced from water. The highest hydrogen evolution rate of 3.38 mu mol g(-1) h(-1) has been achieved. 0.008% of AQE under NIR light irradiation has been approached.
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