Chlorophyll-Inspired Zinc-Phthalocyanine Nanodot Assembled g-C<sub>3</sub>N<sub>4</sub> Composite for Efficient Visible-Light-Driven H<sub>2</sub>O<sub>2</sub> Production.
basic_science · Level V
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- Record sourced from PubMed, PMID 40586660.
- Also identified by DOI 10.1021/acs.nanolett.5c02116.
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Abstract
Designing nanophotocatalysts with high photoreaction and efficient charge separation capability remains a major challenge. Inspired by the photochemical catalytic ability of natural chlorophyll, a zinc phthalocyanine (ZnPc) nanodot assembled graphitic carbon nitride composite (CN/ZnPc/CN) was designed. A four-arm cationic ZnPc molecule with a similar chlorophyll chemical structure was designed and prepared. The cationic ZnPc can self-assemble into nanodots by supramolecular π-π stacking. The ZnPc nanodots were embedded between two layers of g-C<sub>3</sub>N<sub>4</sub> sheets. The carbon nitride composite assembled with ZnPc nanodots like chlorophyll can greatly improve the light-harvesting and charge-separation ability of the CN/ZnPc/CN material. Also, it greatly boosted the generation of the superoxide radical (<sup>•</sup>O<sub>2</sub><sup>-</sup>). The H<sub>2</sub>O<sub>2</sub> production of CN/ZnPc/CN2 was 114.00 μmol·L<sup>-1</sup>·h<sup>-1</sup>, which was 10 times of that of pure CN. The new strategy and nanostructure inspired by chlorophyll provide a new platform in the field of efficient photochemical synthesis and energy conversion.