Surface modification of Shewanella oneidensis MR-1 with polypyrrole-dopamine coating for improvement of power generation in microbial fuel cells

Wang, Dongliang; Pan, Jingyi; Xu, Min; Liu, Bingchuan; Hu, Jingping; Hu, Sujuan; Hou, Huijie; Elmaadawy, Khaled; Yang, Jiakuan; Xiao, Keke; Liang, Sha

doi:10.1016/j.jpowsour.2020.229220

Cited by 41 publications

(31 citation statements)

References 44 publications

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“…PDA has also been utilized to modify various electrode surfaces for application in microbial electrochemical systems, enhancing surface area and bacterial cell loading, decreasing startup times, and accelerating interfacial electron transfer . In addition, PDA improved single-cell electrical wiring for the model electroactive bacterium Shewanella oneidensis MR-1, , and enhanced the adsorption of self-secreted flavins by Shewanella xiamenensis , resulting in improved extracellular electron transfer . Furthermore, the encapsulation of electroactive biofilms with PDA protected them against acid shocks, which could enhance their applicability in real environment .…”

Section: Introductionmentioning

confidence: 99%

Bio-Inspired Redox-Adhesive Polydopamine Matrix for Intact Bacteria Biohybrid Photoanodes

Buscemi

Vona

Stufano

et al. 2022

ACS Appl. Mater. Interfaces

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Interfacing intact and metabolically active photosynthetic bacteria with abiotic electrodes requires both establishing extracellular electron transfer and immobilizing the biocatalyst on electrode surfaces. Artificial approaches for photoinduced electron harvesting through redox polymers reported in literature require the separate synthesis of artificial polymeric matrices and their subsequent combination with bacterial cells, making the development of biophotoanodes complex and less sustainable. Herein, we report a one-pot biocompatible and sustainable approach, inspired by the byssus of mussels, that provides bacterial cells adhesion on multiple surfaces under wet conditions to obtain biohybrid photoanodes with facilitated photoinduced electron harvesting. Purple bacteria were utilized as a model organism, as they are of great interest for the development of photobioelectrochemical systems for H 2 and NH 3 synthesis, biosensing, and bioremediation purposes. The polydopamine matrix preparation strategy allowed the entrapment of active purple bacteria cells by initial oxygenic polymerization followed by electrochemical polymerization. Our results unveil that the deposition of bacterial cells with simultaneous polymerization of polydopamine on the electrode surface enables a 5-fold enhancement in extracellular electron transfer at the biotic/abiotic interface while maintaining the viability of the cells. The presented approach paves the way for a more sustainable development of biohybrid photoelectrodes.

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Section: Introductionmentioning

confidence: 99%

Bio-Inspired Redox-Adhesive Polydopamine Matrix for Intact Bacteria Biohybrid Photoanodes

Buscemi

Vona

Stufano

et al. 2022

ACS Appl. Mater. Interfaces

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“…For MS, a simple in situ polymerization of dopamine and pyrrole in aqueous solution was used to achieve the synthesis of PPy-PDA(DA). − The significance of this step is as follows: first, PDA(DA) is synthesized in aqueous solution using dopamine hydrochloride, Tris-HCl, and copper sulfate. Due to the mussel effect of the synthesized PDA(DA), MS, and PPy can be tightly bound and a large number of hydroxyl groups on the PDA allows the surface to be hydroxylated for hydrophobic modification; second, APS is used for the polymerization of PPy.…”

Section: Resultsmentioning

confidence: 99%

Durable 3D Porous Superhydrophobic Composites for Versatile Emulsion Separation in Multiple Environments

et al. 2022

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Polydopamine as a multifunctional biomimetic polymer with nonselective strong adhesion properties has become a hot research topic in recent years. However, there are a few reports on the durable and effective emulsion separation of polydopamine composites from other materials. Therefore, it is necessary to construct durable polydopamine composites to achieve selective adsorption of materials. In this work, polypyrrole (PPy)-PDA was obtained on sponges by an in situ polymerization reaction, followed by the attachment of SiO2 nanoparticles to the surface by polydimethylsiloxane to achieve superhydrophobicity. As a result, previously unreported selective superhydrophobic adsorbents for PPy-PDA coatings were obtained. The prepared sponges have an excellent adsorption capacity for oils and organic solvents. Not only can the sponges absorb 19–39 g of organic solvents per gram but they can also absorb oil from oil-in-water emulsions. The chemical oxygen demand value of the emulsion can be reduced to 219 mg/L after separation. More importantly, the performance remains good in the cycle test, and due to the construction of a durable superhydrophobic sponge, it can still maintain its relatively good performance in artificial seawater, acid–base environments, and can achieve relatively stable emulsion separation. At the same time, the potential of the polymer material composited with PDA in lasting and stable emulsion separation was also verified.

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“…One such strategy involves in situ chemistries used to introduce conductive coatings in the presence of microbes. In one approach, PPy was coated onto individual cells. ,, In the earliest report, Song et al coated individual cells of S. oneidensis MR-1 with a conductive PPy layer, see Figure .…”

Section: Applicationsmentioning

confidence: 99%

“…In one approach, PPy was coated onto individual cells. 246,247,345 In the earliest report, Song et al coated individual cells of S. oneidensis MR-1 with a conductive PPy layer, see Figure 22. 246 The proposed sequence involves adsorbing the Fe 3+ catalyst onto the microbe surface through electrostatic interactions and then initiating the growth of PPy from the cell surface.…”

Section: Energy Conversion Applicationsmentioning

confidence: 99%

Current Progress of Interfacing Organic Semiconducting Materials with Bacteria

et al. 2021

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Microbial bioelectronics require interfacing microorganisms with electrodes. The resulting abiotic/biotic platforms provide the basis of a range of technologies, including energy conversion and diagnostic assays. Organic semiconductors (OSCs) provide a unique strategy to modulate the interfaces between microbial systems and external electrodes, thereby improving the performance of these incipient technologies. In this review, we explore recent progress in the field on how OSCs, and related materials capable of charge transport, are being used within the context of microbial systems, and more specifically bacteria. We begin by examining the electrochemical communication modes in bacteria and the biological basis for charge transport. Different types of synthetic organic materials that have been designed and synthesized for interfacing and interrogating bacteria are discussed next, followed by the most commonly used characterization techniques for evaluating transport in microbial, synthetic, and hybrid systems. A range of applications is subsequently examined, including biological sensors and energy conversion systems. The review concludes by summarizing what has been accomplished so far and suggests future design approaches for OSC bioelectronics materials and technologies that hybridize characteristic properties of microbial and OSC systems. CONTENTS 5.1. Biosensors 4806 5.2. Energy Conversion Applications 4810 6. Future Directions 4813 Author Information 4814 Corresponding Authors 4814 Authors 4814 Notes 4814 Biographies 4814 Acknowledgments 4815 References 4815

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Surface modification of Shewanella oneidensis MR-1 with polypyrrole-dopamine coating for improvement of power generation in microbial fuel cells

Cited by 41 publications

References 44 publications

Bio-Inspired Redox-Adhesive Polydopamine Matrix for Intact Bacteria Biohybrid Photoanodes

Bio-Inspired Redox-Adhesive Polydopamine Matrix for Intact Bacteria Biohybrid Photoanodes

Durable 3D Porous Superhydrophobic Composites for Versatile Emulsion Separation in Multiple Environments

Current Progress of Interfacing Organic Semiconducting Materials with Bacteria

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