Nanoporous FeVO4 Photoanodes Modified with Ultrathin C3N4 for High Photoelectrochemical Water Splitting Performance
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Great efforts have been paid to improve the photoelectrochemical performances of FeVO4 semiconductors. However, there have rarely been reported about the modifying of FeVO4 with metal-free co-catalyst for enhanced photoelectrochemical activities. Herein, we demonstrate a facile and effective immersion method for coupling ultrathin g-C3N4 nanosheets with nanoporous FeVO4 photoelectrodes. The FeVO4/g-C3N4 heterostructures demonstrate more than twice higher photocurrent density than pure nanoporous FeVO4 photoelectrodes, which should be attributed to the metal-free co-catalyst of ultrathin g-C3N4. It is believed that the ultrathin g-C3N4 nanosheets can effectively trap the photo excited holes and facilitates the charge separation efficiency and thus significantly improve the photoelectrochemical performances of FeVO4.
KeywordsHeterostructures Ultrathin FeVO4 g-C3N4 Photoelectrochemical
This work was supported by Key research and development Plan Project of Shandong Province (2015GGX104012; 2017GGX80104), A Project of Shandong Province Higher Educational Science and Technology Program (J17KB001) and Shandong Province National Natural Science Foundation (ZR2014EL010).
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Conflict of interest
The authors declare no competing financial interests.