Related Experiment Video
Updated: Oct 7, 2025

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
Published on: October 5, 2019
Biohybrid Cells for Photoelectrochemical Conversion Based on the HCOO--CO2 Circulation Approach
Xinke Kong1, Panpan Gai1, Feng Li1
1College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, P. R. China.
Abstract:
Biohybrid photoelectrochemical systems could combine the light-harvesting ability of semiconductor photocatalysts and the CO2-processing capability of biocatalysts to realize CO2 reduction. How to develop the energy-utilized model can be of importance for the mechanism exploration of photosynthesis. Here, a biohybrid photoelectrochemical system based on HCOO--CO2 circulation was developed to realize the conversion both of solar-to-electric energy and chemical-to-electric energy. The device consists of a TiO2 nanoparticle photoanode and a laser-scribed graphene/formate dehydrogenase biocathode, which was utilized for the formic acid oxidation and the biocatalysis reduction of CO2 to HCOO-, respectively. The as-proposed biohybrid photoelectrochemical system exhibits good performance with an open-circuit potential of 0.93 V and a maximum power output density of 76 μW cm-2. This ingenious strategy not only exploits a robust carbon circulation system for the conversion of solar energy but also provides a way of constructing complex artificial photosynthesis systems.
Related Concept Videos
Oxygenic Photosynthesis
The Z-Scheme of Electron Transport in Photosynthesis
Photochemical Electrocyclic Reactions: Stereochemistry
Selection Rules: Photochemical Activation
Chemiosmosis
Electron Transport Chain
The electron transport chain involves a series of protein complexes on the inner mitochondrial membrane that undergo a series of redox reactions. At the end of this chain, the electrons...
Anoxygenic Photosynthesis
Thermal and Photochemical Electrocyclic Reactions: Overview

