journal article·2023-01-13

Ultrafast Electron Transfer in Au–Cyanobacteria Hybrid for Solar to Chemical Production

Qiushi Hu, Haitao Hu, Lei Cui, Zhaodong Li, Drazenka Svedruzic, Jeffrey L. Blackburn, Matthew C. Beard, Jun Ni, Wei Xiong, Xiang Gao, Xihan Chen

ACS Energy Letters· Volume 8· Issue 1
Publisher page

Abstract

The rise of inorganic–biohybrid organisms for solar-to-chemical production has spurred mechanistic investigations into the dynamics of the biotic–abiotic interface to drive the development of next-generation hybrid systems. The model system, cyanobacteria–gold nanoparticle hybrids, combines a light harvester with a photosynthetic bacterium to drive the reduction of CO2 to glycerol with improved efficiency and increased glycerol production by 14.6%, in comparison to cyanobacteria only. In this work, we report insights into this unique photochemical behavior and propose a charge-transfer pathway from Au nanoparticle to cyanobacteria. Transient absorption (TA) spectroscopy revealed that photoexcited electron transfer rates are on the order of a few ps to the potential electron acceptor in photosystem II. This work represents a promising platform to utilize a conventional spectroscopic methodology to extract insights from more complex biotic–abiotic hybrid systems.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Photosynthetic Processes and Mechanisms · Electrocatalysts for Energy Conversion · Microbial Fuel Cells and Bioremediation

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

SUSTech Energy Institute for Carbon Neutrality, Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, Guangdong518055, China

Center for Materials Synthetic Biology, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen518055, China

The Institute of Technological Sciences, Wuhan University, Wuhan, Hubei430072, China

National Renewable Energy Laboratory, Golden, Colorado80401, United States

State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic & Developmental Sciences, and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai200240, China

Funding

Ministry of Science and Technology of the People's Republic of China · Basic Energy Sciences · National Renewable Energy Laboratory · Southern University of Science and Technology · National Natural Science Foundation of China

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