ACS ES&T Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 26, 2024

Photosynthetic biohybrid system (PBS), which utilizes photoenergy to augment microbial metabolism, offers a promising route for efficient bioproduction and wastewater valorization. However, the existing PBS generally suffers from low efficiency due sluggish electron transfer at semiconductor–microbe interface inadequate stability practical applications. In addition, well-defined culture media are exclusively used; thus, their potential real treatment remains untapped. Herein, we address these challenges by using reduced graphene oxide (rGO) as conductive bridge protective layer drastically performance of hydrogen-producing PBS, consisting Shewanella oneidensis MR-1 cells cadmium sulfide (CdS). The rGO layer, encapsulates CdS an abundant area contact with bacterial cells, plays critical role in boosting separation further delivery photoexcited electrons cell surface. It also considerably reduces photocorrosion excess photoelectrons scavenge photoinduced holes, thus improving viability. As consequence, rGO-augmented exhibited remarkable quantum 22.8% hydrogen production, was 26 times higher than that rGO-free control under visible light. Superior treating aquaculture were demonstrated. Our work may inspire technological innovations synergize photocatalytic processes sustainable and/or valorization

Language: Английский