Boosting Electrocatalytic Oxygen Evolution Performance of Ultrathin Co/Ni-MOF Nanosheets via Plasmon-Induced Hot Carriers
Boosting Electrocatalytic Oxygen Evolution Performance of Ultrathin Co/Ni-MOF Nanosheets via Plasmon-Induced Hot Carriers
复制标题
通过等离子体诱导热载流子提高超薄 Co/Ni-MOF 纳米片的电催化析氧性能
DOI：
10.1021/acsami.8b13472
复制
发表时间：
2018-10-31
影响因子：
9.5
通讯作者：
Jin, Yongdong
中科院分区：
文献类型：
--
作者：
Wang, Minmin;Wang, Ping;Jin, Yongdong
Ultrathin metal organic framework (MOF) nanosheets with large active sites and superior catalytic properties have attracted extensive interests and are promising for oxygen evolution reaction (OER) for water splitting. Herein, we report a novel and highly efficient heteronanostructured OER system based on plasmonic Au nano particles (NPs) and ultrathin semiconductor-like Co/Ni-MOF nanosheets. The OER performance of the hybrid system can be tuned (by varying the AuNP sizes) and the oxidation current significantly enhanced to similar to 10-fold with incorporated AuNPs of similar to 20 nm. An onset overpotential (eta) of only 0.33 V was achieved under light illumination, which was much lower than the pure Ni/Co-MOF (0.48 V). Further analysis revealed the key role of the plasmonically induced hot holes (via electric and combined photoexcitation) in boosting the OER performance of the resulting system. The finding and the proposed concept provide a new insight for understanding the plasmon enhancements in catalysis and may open a new avenue to design MOF hetero-nanostructures with high performance for photoelectrocatalysis.
