期刊
CHEMICAL ENGINEERING JOURNAL
卷 381, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2019.122655
关键词
Cu2O; Photocathode; Noble-metal-free; Surface plasmon resonance; Photoelectrochemical water splitting
资金
- Science Funds of Tianjin for Distinguished Young Scholar [17JCJQJC44800]
- Natural Science Foundation of Tianjin [16JCYBJC17900]
Developing low-cost but effective cocatalyst is of crucial importance for strongly enhancing the photoelectrodes performance in photoelectrochemical (PEC) water splitting. Herein, we firstly report a rational and low-cost design of a ternary photocathode that Cu2O sandwiched by spatial noble-metal-free cocatalysts (NiS nanoparticles on the surface and Al nanoparticles on the bottom) to realize enhanced PEC performance. The integration of Al with surface plasmon resonance (SPR) effect and electron trapper NiS spatially loaded on the Cu2O nanocubes is indeed conducive to excite the hot electron-hole pairs, boost the solar light absorption and elevate ultrafast spatial transfer and separation of photogenerated electrons and holes, resulting in remarkable photocurrent density of -5.16 mA/cm(2) at 0 V vs. RHE, an eight-fold enhancement than that of pristine Cu2O. The selection of noble-metal-free Al and NiS cocatalysts is superior substitute to noble metal Au and Pt from the comparison with our previous work. Therefore, this work could inspire ongoing interest in the design of highly efficient and cost-effective hybrid photoelectrodes which is able to replace noble metals in practical applications of PEC water splitting.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据