Aggregation‐induced emission luminogen: A new perspective in the photo‐degradation of organic pollutants

• Main Authors: Zhen Hu, Ying Li, Miaomiao Kang, Md. Monarul Islam, Mengsi Chen, Jun Zhang, Ye Xiao, Xing Feng, Carl Redshaw, Menglong Zhang, Qing Chen, Sheng Xie, Jacky W. Y. Lam, Ben Zhong Tang
• Format: Article
• Language: English
• Published: Wiley 2020-06-01
• Series: EcoMat
• Subjects: aggregation‐induced emission luminogen; photocatalysis mechanism; photodegradation; radical species
• Online Access: https://doi.org/10.1002/eom2.12024

Abstract Both the variety and uniqueness of organic semiconductors has contributed to the rapid development of environmental engineering applications and renewable fuel production, typified by the photodegradation of organic pollutants or water splitting. This paper presents a rare example of an aggregation‐induced emission luminogen as a highly efficient photocatalyst for pollutant decomposition in an environmentally relevant application. Under irradiation, the tetraphenylethene‐based AIEgen (TPE‐Ca) exhibited high photo‐degradation efficiency of up to 98.7% of Rhodamine B (RhB) in aqueous solution. The possible photocatalytic mechanism was studied by electron paramagnetic resonance and X‐ray photoelectron spectroscopy spectra, electrochemistry, thermal imaging technology, ultra‐performance liquid chromatography and high‐definition mass spectrometry, as well as by density functional theory calculations. Among the many diverse AIEgens, this is the first AIEgen to be developed as a photocatalyst for the degradation of organic pollutants. This research will open up new avenues for AIEgens research, particularly for applications of environmental relevance.