Anaerobically photoreductive degradation by CdS nanocrystal: Biofabrication process and bioelectron-driven reaction coupled with Shewanella oneidensis MR-1

Xiao, Xiang; Han, Xue; Wang, Luguang; Long, Fei; Ma, Xiaolin; Xu, Chunli; Ma, Xiaobo; Wang, Chenxi; Liu, Zhao‐Ying

doi:10.1016/j.bej.2019.107466

Cited by 29 publications

(19 citation statements)

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“…There has been a relatively recent surge in biohybrids of non-photosynthetic biofilms and abiotic photosensitizers in photobioelectrocatalysis in order to generate photocurrent, recycle pollutants, and/or produce energy rich chemicals [112][113][114][115][116]. These biohybrids constitute inorganic semiconductors such as TiO 2 [117][118][119], CdS [120][121][122], Rutile [123], Hematite [112,113], CuInS 2 [124], α-Fe 2 O 3 [114] and organic dyes such as Eosin Y [125] in the photosensitizer capacity, paired to bacteria such as S. oneidensis, T. denitrificans, E. coli, M. barkeri. While such systems bear the advantage of tunability (e.g., the ability to synthetically tune the bandgap of a semiconductor to facilitate the maximum solar absorbance [126]), they are nevertheless limited by poor electric wiring to the biofilms, which in turn can be overcome by redox mediation.…”

Section: Complex Redox Mediator Systemsmentioning

confidence: 99%

Rational design of artificial redox-mediating systems toward upgrading photobioelectrocatalysis

Weliwatte

Grattieri

2021

Photochem Photobiol Sci

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Photobioelectrocatalysis has recently attracted particular research interest owing to the possibility to achieve sunlight-driven biosynthesis, biosensing, power generation, and other niche applications. However, physiological incompatibilities between biohybrid components lead to poor electrical contact at the biotic-biotic and biotic-abiotic interfaces. Establishing an electrochemical communication between these different interfaces, particularly the biocatalyst-electrode interface, is critical for the performance of the photobioelectrocatalytic system. While different artificial redox mediating approaches spanning across interdisciplinary research fields have been developed in order to electrically wire biohybrid components during bioelectrocatalysis, a systematic understanding on physicochemical modulation of artificial redox mediators is further required. Herein, we review and discuss the use of diffusible redox mediators and redox polymer-based approaches in artificial redox-mediating systems, with a focus on photobioelectrocatalysis. The future possibilities of artificial redox mediator system designs are also discussed within the purview of present needs and existing research breadth.

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Section: Complex Redox Mediator Systemsmentioning

confidence: 99%

Rational design of artificial redox-mediating systems toward upgrading photobioelectrocatalysis

Weliwatte

Grattieri

2021

Photochem Photobiol Sci

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“…The biosynthesis of Cd-based quantum dots is flourishing due to its prominent economic and environmental benefits [ 157 ]. Both S. oneidensis MR-1[ 158 , 159 ] and G. sulfurreducens PCA[ 30 ] have been adopted to bio-fabricate CdS-NPs under anaerobic conditions. To avoid the particle agglomeration, ionic liquids were introduced as soft templates to control crystal growth and assist assembly of biogenic CdS [ 158 ].…”

Section: Biosynthesis Of Metal Nanoparticlesmentioning

confidence: 99%

“…To avoid the particle agglomeration, ionic liquids were introduced as soft templates to control crystal growth and assist assembly of biogenic CdS [ 158 ]. Notably, the in-situ synthesis of CdS quantum dots on bacterial cell surfaces can construct a biotic-abiotic hybrid system for efficient bio-photoelectric reductive degradation of some organic pollutants such as trypan blue and methyl orange [ 30 , 159 ].…”

Section: Biosynthesis Of Metal Nanoparticlesmentioning

confidence: 99%

“…oneidensis MR-1 provided an opportunity to develop an attractive hybrid pattern that integrated biological degradation with ligh-excited photoelectrons (Fig. 8 ) [ 30 , 159 ]. Such a bio-photo-catalytic system opened a new high-powered strategy for pollutant degradation through interactions among light energy, electrochemical reactions and microorganisms.…”

Section: Applicationsmentioning

confidence: 99%

“…[ 30 ] b CdS-hybridized S . oneidensis MR-1 for bio-photo-catalytic degradation of trypan blue [ 159 ] …”

Section: Applicationsmentioning

confidence: 99%

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Bacterial extracellular electron transfer: a powerful route to the green biosynthesis of inorganic nanomaterials for multifunctional applications

et al. 2021

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Synthesis of inorganic nanomaterials such as metal nanoparticles (MNPs) using various biological entities as smart nanofactories has emerged as one of the foremost scientific endeavors in recent years. The biosynthesis process is environmentally friendly, cost-effective and easy to be scaled up, and can also bring neat features to products such as high dispersity and biocompatibility. However, the biomanufacturing of inorganic nanomaterials is still at the trial-and-error stage due to the lack of understanding for underlying mechanism. Dissimilatory metal reduction bacteria, especially Shewanella and Geobacter species, possess peculiar extracellular electron transfer (EET) features, through which the bacteria can pump electrons out of their cells to drive extracellular reduction reactions, and have thus exhibited distinct advantages in controllable and tailorable fabrication of inorganic nanomaterials including MNPs and graphene. Our aim is to present a critical review of recent state-of-the-art advances in inorganic biosynthesis methodologies based on bacterial EET using Shewanella and Geobacter species as typical strains. We begin with a brief introduction about bacterial EET mechanism, followed by reviewing key examples from literatures that exemplify the powerful activities of EET-enabled biosynthesis routes towards the production of a series of inorganic nanomaterials and place a special emphasis on rationally tailoring the structures and properties of products through the fine control of EET pathways. The application prospects of biogenic nanomaterials are then highlighted in multiple fields of (bio-) energy conversion, remediation of organic pollutants and toxic metals, and biomedicine. A summary and outlook are given with discussion on challenges of bio-manufacturing with well-defined controllability.

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Bio‐Metabolism‐Driven Crystalline‐Engineering of CdS Quantum Dots for Highly Active Photocatalytic H₂ Evolution

Wang

Zhou

et al. 2021

ChemistrySelect

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Biosynthesis was considered as a green and sustainable approach for nanomaterials fabrication. However, it is still quite challenging to fine tune the biosynthesis process for high‐quality photocatalytic nanomaterials. In this study, an aerobic approach for biosynthesis of photocatalytic CdS quantum dots (QDs) by Shewanella oneidensis MR‐1 was developed. Interestingly, it was found that by simply tuning the concentration of substrates, the crystalline structure of the CdS QDs was transformed between cubic phase and hexagonal phase. The hexagonal CdS QDs synthesized by simple substrate‐metabolism regulation exhibited high photocatalytic H2 evolution activity (21 mmol H2/g CdS/h), which was the highest record for CdS QDs. This finding demonstrated the possibility to well control the crystalline structure of biosynthesized QDs by simple bio‐metabolism regulation and provided a bio‐metabolism‐driven green route for crystalline engineering.

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Anaerobically photoreductive degradation by CdS nanocrystal: Biofabrication process and bioelectron-driven reaction coupled with Shewanella oneidensis MR-1

Cited by 29 publications

References 40 publications

Rational design of artificial redox-mediating systems toward upgrading photobioelectrocatalysis

Rational design of artificial redox-mediating systems toward upgrading photobioelectrocatalysis

Bacterial extracellular electron transfer: a powerful route to the green biosynthesis of inorganic nanomaterials for multifunctional applications

Bio‐Metabolism‐Driven Crystalline‐Engineering of CdS Quantum Dots for Highly Active Photocatalytic H₂ Evolution

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Anaerobically photoreductive degradation by CdS nanocrystal: Biofabrication process and bioelectron-driven reaction coupled with Shewanella oneidensis MR-1

Cited by 29 publications

References 40 publications

Rational design of artificial redox-mediating systems toward upgrading photobioelectrocatalysis

Rational design of artificial redox-mediating systems toward upgrading photobioelectrocatalysis

Bacterial extracellular electron transfer: a powerful route to the green biosynthesis of inorganic nanomaterials for multifunctional applications

Bio‐Metabolism‐Driven Crystalline‐Engineering of CdS Quantum Dots for Highly Active Photocatalytic H2 Evolution

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Bio‐Metabolism‐Driven Crystalline‐Engineering of CdS Quantum Dots for Highly Active Photocatalytic H₂ Evolution