Issue 19, 2019

Enhanced CO2 reduction and valuable C2+ chemical production by a CdS-photosynthetic hybrid system

Abstract

Semi-artificial photosynthesis is an emerging technique in recent years. Here, we presented an inorganic-biological hybrid system composed of photosynthetic Rhodopseudomonas palustris and CdS nanoparticles coated on the bacterial surface. Under visible light irradiation, the CO2 reduction and valuable C2+ chemical production of R. palustris could be promoted by the photo-induced electrons from the CdS NPs. The increased energy-rich NADPH cofactor promoted the generation of the Calvin cycle intermediate, glyceraldehyde-3-phosphate. As a result, the production of solid biomass, carotenoids and poly-β-hydroxybutyrate (PHB) was increased to 148%, 122% and 147%, respectively. The photosynthetic efficiency (PE) of CdS–R. palustris was elevated from the original 4.31% to 5.98%. The surface loaded NP amount and the material–cell interface both played important roles in the efficient electron generation and transduction. The CdS–R. palustris hybrid system also exhibited a survival advantage over its natural counterparts under the autotrophic conditions. Under a practical solar/dark cycle, the produced biomass, carotenoid and PHB from the hybrid system also reach 139%, 117% and 135%, respectively. The CdS-photosynthetic hybrid system represents a powerful and expandable platform for advanced CO2 reduction and solar-to-chemical (S2C) conversion.

Graphical abstract: Enhanced CO2 reduction and valuable C2+ chemical production by a CdS-photosynthetic hybrid system

Supplementary files

Article information

Article type
Communication
Submitted
04 Apr 2019
Accepted
11 Apr 2019
First published
17 Apr 2019

Nanoscale, 2019,11, 9296-9301

Enhanced CO2 reduction and valuable C2+ chemical production by a CdS-photosynthetic hybrid system

B. Wang, Z. Jiang, J. C. Yu, J. Wang and P. K. Wong, Nanoscale, 2019, 11, 9296 DOI: 10.1039/C9NR02896J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements