Water splitting is considered the most attractive pursuit in the field of solar energy conversion. In this study, we report the synthesis and application of a supramolecular hybrid of carbon nanodot (CD) and cobalt polyoxometalate (Co-POM) to solar water oxidation. The self-assembly of the alginate-based CD and Co-POM led to the formation of a spherical hybrid of CD/Co-POM. Owing to the facile transfer of photogenerated holes from CD under visible light irradiation, the hybrid donor-acceptor type of CD/Co-POM enabled the rapid scavenging of holes and accumulation of a long-lived oxidation state of Co-POM for efficient solar water oxidation, outperforming conventional [Ru(bpy)3]2+-based systems. We believe that this study offers new insights into the development of CD-based nanocomposites with various photocatalytic and optoelectronic applications.
Bibliographical noteFunding Information:
We thank Prof. Myoung Hoon Song and Seungjin Lee for assistance in TCSPC experiment. This work was supported by the National Research Foundation of Korea (NRF) grant (NRF-2015R1A2A2A04003160, 2015R1C1A1A02037698, 2017R1A6A3A11028305, and 2017M3A7B4052802).
This work was supported by the National Research Foundation of Korea (NRF) grant (NRF-2015R1A2A2A04003160, 2015R1C1A1A02037698, 2017R1A6A3A11028305 and 2017M3A7B4052802).
© 2018 American Chemical Society.
All Science Journal Classification (ASJC) codes
- Materials Science(all)