Work

Intensification of heterogeneous photocatalytic reactions using wireless light emitters: the case study of nitrobenzene reduction

Year: 2025

Type: article

Abstract: Delocalized internal irradiation is a promising technique for intensification and scale-up of photochemical processes as it avoids the otherwise inevitable light concentration. In particular, wireless light emitters (WLEs) powered by resonant inductive coupling showed promise in previous studies. However, the achieved photon flux was still relatively. Herein, we show that through systematic optimization, the WLE technique can reach extremely high photon flux densities and energy efficiency, surpassing conventional photochemical reaction systems. Moreover, the intensification potential is demonstrated on the basis of a case study: the photocatalytic reduction of nitrobenzene in isopropanol using a TiO2 photocatalyst. The results also reveal a significant advantage of the WLE system. Due to the decentralized light emitters, light concentration is minimized which prevents or reduces efficiency losses due to kinetic limitations at high light intensity.

Source: Reaction Chemistry & Engineering

DOI: 10.1039/d5re00120j

Authors: Hong T. Duong, Bruno Ortner, Alexander Sutor, Bastien O. Burek, Jonathan Z. Bloh

Institutions: Society for Chemical Engineering and Biotechnology, DECHEMA-Forschungsinstitut, UMIT TIROL - Private University for Health Sciences and Health Technology

Language: English

Topic: Advanced Photocatalysis Techniques

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

Open Access status: green

Funder: Deutsche Forschungsgemeinschaft

Award: G5665702467