期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 266, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2019.118513
关键词
CoNi-MOFs/BiVO4; Photoelectrochemical (PEC) water splitting; Stability
资金
- National Natural Science Foundation of China [21663027, 21808189]
- Fundamental Research Funds for the Central Universities of Chang'an University [300102299304]
In this work, an efficient nanoporous BiVO4 composite photoelectrode with high photocurrent and low onset potential for photoelectrochemical water splitting is achieved through modification of BiVO4 with a stable heterometallic CoNi-MOF layer. Compared with pristine BiVO4 anode, the formation of CoNi-MOFs/BiVO4 increases the photocurrent density by about 260 %. In addition, the CoNi-MOFs/BiVO4 photoanode is of greater steadiness for water oxidation, without insignificant activity attenuation within 3 reaction hours at 1.23 V vs. RHE. It is postulated that bimetal-organic framework CoNi-MOFs could supply more open sites which account for the impressively enhanced PEC performance of BiVO4 photoanodes toward water splitting under illumination. The results demonstrate a new method to fabricate dual metal nanoparallelepiped-like MOF for steady hydrolysis photoanode material.
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