Jump to main content
Jump to site search


Carbonized polymer dots/TiO2 photonic crystal heterostructures with enhanced light harvesting and charge separation for efficient and stable photocatalysis

Author affiliations

Abstract

TiO2 photonic crystals (PCs) are widely interesting in photocatalysis due to their slow photon effect for efficient light harvesting. However, their performance is limited by the narrow absorption range and fast charge recombination. In this work, an efficient strategy is developed to enhance the light harvesting and charge lifetime through fabricating TiO2 PC/carbonized polymer dot (CPD) heterostructures. The CPDs with a band gap of 2.08 eV are used to broaden the light absorption range. The energy level of CPDs matches well with TiO2 PCs, forming a type-II heterojunction. The staggered energy levels of CPD/TiO2 PC heterostructures are helpful for charge separation and thus suppressed charge recombination, which is demonstrated by the transient photovoltage (TPV) measurements. Therefore, the CPD/TiO2 PC heterostructures exhibit obviously better photocatalytic performance than individual TiO2 PCs. The combination of CPDs and inorganic semiconductors provides a variety of possibilities for the further development of high-efficiency photocatalysts.

Graphical abstract: Carbonized polymer dots/TiO2 photonic crystal heterostructures with enhanced light harvesting and charge separation for efficient and stable photocatalysis

  • This article is part of the themed collection: Carbon Dots
Back to tab navigation

Supplementary files

Publication details

The article was received on 31 Aug 2019, accepted on 28 Sep 2019 and first published on 30 Sep 2019


Article type: Research Article
DOI: 10.1039/C9QM00556K
Mater. Chem. Front., 2019, Advance Article

  •   Request permissions

    Carbonized polymer dots/TiO2 photonic crystal heterostructures with enhanced light harvesting and charge separation for efficient and stable photocatalysis

    Y. Zhao, Q. Zeng, T. Feng, C. Xia, C. Liu, F. Yang, K. Zhang and B. Yang, Mater. Chem. Front., 2019, Advance Article , DOI: 10.1039/C9QM00556K

Search articles by author

Spotlight

Advertisements