A Whole-Cell Inorganic-Biohybrid System Integrated by Reduced Graphene Oxide for Boosting Solar Hydrogen Production

The photoelectron transfer between semiconductors and cells is the rate-determining step that controls the solar H2 production of whole-cell inorganic-biohybrid systems (IBSs). Herein, we constructed an IBS by using reduced graphene oxide (RGO) to integrate Shewanella oneidensis MR-1 (SW) cells and...

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Bibliographic Details
Published inACS catalysis Vol. 10; no. 22; pp. 13290 - 13295
Main Authors Shen, Hongqiang, Wang, Yan-Zhai, Liu, Guiwu, Li, Longhua, Xia, Rong, Luo, Bifu, Wang, Jixiang, Suo, Di, Shi, Weidong, Yong, Yang-Chun
Format Journal Article
LanguageEnglish
Published American Chemical Society 20.11.2020
Subjects
H2 production
Shewanella oneidensis MR-1
cuprous oxide
reduced graphene oxide
inorganic-biohybrid
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Summary:The photoelectron transfer between semiconductors and cells is the rate-determining step that controls the solar H2 production of whole-cell inorganic-biohybrid systems (IBSs). Herein, we constructed an IBS by using reduced graphene oxide (RGO) to integrate Shewanella oneidensis MR-1 (SW) cells and Cu2O, which exhibited a 11–38-fold enhancement of photocatalytic H2 production compared with RGO-free IBSs (Cu2O/SW and Cu2O/organic electron mediator/SW). Further analysis revealed that RGO provided multifunctional contributions to H2 production from IBS, that is, sufficient area for IBS supporting, efficient photoelectron collection from Cu2O, and effective electron distribution into the cells. This study offers opportunities for rationally designing electron transfer pathways to achieve high-performance IBSs.
ISSN:2155-5435
2155-5435
DOI:10.1021/acscatal.0c03594