Intrinsic Defect Engineering in Carbon Nitrides for Solar Energy Conversion and Storage

Li-Che Chueh¹, Dai-Ling Tsai¹, Hsing-Ting Liu¹, Jih-Jen Wu^1*

¹Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan

* Presenter:Jih-Jen Wu, email:wujj@mail.ncku.edu.tw

Polymeric carbon nitrides with two-dimensional planar structures have been known to be the potential visible-light-driven photocatalysts for solar energy conversion and environmental remediation. However, pristine carbon nitrides usually exhibit limited performances for solar energy conversion. Intrinsic defect engineering in carbon nitrides has attracted considerable attention because it provides a promising approach to boost the photocatalytic performance of carbon nitrides without introducing heteroatom in the basic unit. In this presentation, the defective carbon nitrides with superior photocatalytic and dark photocatalytic activities will be reported. These defective carbon nitrides are produced by the thermal or ionothermal treatments of supramolecular complexes with appropriate compositions. The influences of chemical and electronic structures on the photophysical properties of the intrinsic defect modified carbon nitrides, which govern the microscopic mechanisms for solar energy conversion and storage, will be discussed in this presentation.

Keywords: Carbon Nitride, Defect Engineering, Solar Energy Conversion