Role of lamp type in conventional batch and micro-photoreactor for photocatalytic hydrogen production

Frontiers in Chemistry

Chemistry

Lada Dubnová¹  Vendula Meinhardová¹  Libor Čapek¹  Helena Drobná¹  Lenka Matějová²  Kamila Kočí² 

[1] Faculty of Chemical Technology, University of Pardubice, Pardubice, Czechia;Institute of Environmental Technology, VŠB-Technical University of Ostrava, Ostrava Poruba, Czechia;

关键词: irradiation;    intensity;    UV-LED lamp;    hydrogen production;    micro-photoreactor;    batch reactor;   

DOI  :  10.3389/fchem.2023.1271410

 received in 2023-08-02, accepted in 2023-09-11,  发布年份 2023

来源: Frontiers

【 摘 要 】

The use of an irradiation source with a homogeneous distribution of irradiation in the volume of the reaction mixture belongs to the essential aspects of heterogeneous photocatalysis. First, the efficacy of six lamps with various radiation intensity and distribution characteristics is contrasted. The topic of discussion is the photocatalytic hydrogen production from a methanol-water solution in the presence of a NiO-TiO2 photocatalyst. The second section is focused on the potential of a micro-photoreactor system–the batch reactor with a micro-reactor with a circulating reaction mixture, in which the photocatalytic reaction takes place using TiO2 immobilized on borosilicate glass. Continuous photocatalytic hydrogen generation from a methanol-water solution is possible in a micro-photoreactor. This system produced 333.7 ± 21.1 µmol H2 (252.8 ± 16.0 mmol.m−2, the hydrogen formation per thin film area) in a reproducible manner during 168 h.

【 授权许可】

Unknown   
Copyright © 2023 Meinhardová, Dubnová, Drobná, Matějová, Kočí and Čapek.