ACS Appl Mater Interfaces. 2018 Apr 25;10(16):13434-13441. doi: 10.1021/acsami.8b00162. Epub 2018 Apr 12.
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)]-based systems. We believe that this study offers new insights into the development of CD-based nanocomposites with various photocatalytic and optoelectronic applications.
水分解被认为是太阳能转换领域最具吸引力的追求。在这项研究中，我们报告了碳纳米点（CD）和钴多金属氧酸盐（Co-POM）的超分子杂化在太阳能水氧化中的合成与应用。基于海藻酸钠的 CD 和 Co-POM 的自组装导致了 CD/Co-POM 的球形杂化的形成。由于在可见光照射下 CD 中光生空穴的易于转移，CD/Co-POM 的供体-受体型使得空穴的快速猝灭和 Co-POM 的长寿命氧化态的积累成为可能，从而实现了高效的太阳能水氧化，优于传统的[Ru(bpy)]-基体系。我们相信，这项研究为开发具有各种光催化和光电应用的基于 CD 的纳米复合材料提供了新的见解。
