Yan Yang, Yaqian Zhao, Cheng Tang et al.

Chemosphere • 2020

Xiaoshuai Wu, Yan Qiao, Zhuanzhuan Shi et al.

ACS Applied Materials & Interfaces • 2018

Interfacial electron transfer between an electroactive biofilm and an electrode is a crucial step for microbial fuel cells (MFCs) and other bio-electrochemical systems. Here, a hierarchically porous nitrogen-doped carbon nanotubes (CNTs)/reduced graphene oxide (rGO) composite with polyaniline as the nitrogen source has been developed for the MFC anode. This composite possesses a nitrogen atom-doped surface for improved flavin redox reaction and a three-dimensional hierarchically porous structure for rich bacterial biofilm growth. The maximum power density achieved with the N-CNTs/rGO anode in S. putrefaciens CN32 MFCs is 1137 mW m -2 , which is 8.9 times compared with that of the carbon cloth anode and also higher than those of N-CNTs (731.17 mW m -2 ), N-rGO (442.26 mW m -2 ), and the CNTs/rGO (779.9 mW m -2 ) composite without nitrogen doping. The greatly improved bio-electrocatalysis could be attributed to the enhanced adsorption of flavins on the N-doped surface and the high density of biofilm adhesion for fast interfacial electron transfer. This work reveals a synergistic effect from pore structure tailoring and surface chemistry designing to boost both the bio- and electrocatalysis in MFCs, which also provide insights for the bioelectrode design in other bio-electrochemical systems.

Kaili Zhu, Shuangfei Wang, Hui Liu et al.

Journal of Cleaner Production • 2022

Jing Shen, Jianfeng Li, Fusheng Li et al.

Chemical Engineering Journal • 2020

Lei Xu, Yaqian Zhao, Xiaodi Wang et al.

Chemical Engineering Journal • 2018

Yamini Mittal, Sudatta Dash, Pratiksha Srivastava et al.

Chemical Engineering Journal • 2021

Yuan Liu, Yisong Fan, Zhimei Liu

Chemical Engineering Journal • 2018

Yu Zhang, Qiaoning He, Ling Xia et al.

Biochemical Engineering Journal • 2018

Wei Yang, Gustavo Chata, Yudong Zhang et al.

Nano Energy • 2018

Bikash R. Tiwari, Md Tabish Noori, Makarand M. Ghangrekar

International Journal of Hydrogen Energy • 2017

Yuanfeng Liu, Xiuling Zhang, Qichun Zhang et al.

Energy Technology • 2020

Microbial fuel cells (MFCs) exhibit great potential to generate power through organic wastewater treatment. Limitations have restricted the advanced development of MFCs, including low power density, expensive electrode materials, and the challenge to manufacture MFCs in large scale. However, the introduction of advanced anode materials, especially porous and nanostructured materials, is believed to be an effective way to solve the problems, as they can promote bacteria extracellular electron transfer (EET) because of their unique physical, chemical, and electrical properties. Nanostructured materials, including carbon nanotubes (CNTs), graphene, activated carbon fiber, metal, metal oxides and conductive polymers, show many appreciable properties such as good conductivity, large specific surface area, and excellent catalytic activity. Additionally, nanomaterials with unique electrochemical properties provide strong charge interactions with organic compounds and the direct electrochemistry process between bacteria and the anode. This Review comprehensively focuses on the recent development of modification of nanostructured anode materials in view of crucial intrinsic factors to enhance electricity output. Furthermore, the enhanced performance of MFCs and the corresponding known mechanism is also discussed, which enables active bacteria to facilitate electron transfer. Finally, promising strategies to modify anode nanomaterials for future research are presented.

Geetanjali Yadav, Iti Sharma, Makarand M. Ghangrekar et al.

Journal of Power Sources • 2019

Tian‐shun Song, Yuejuan Jin, Jingjing Bao et al.

Journal of Hazardous Materials • 2016

Yoong-Ling Oon, Soon‐An Ong, Li‐Ngee Ho et al.

Bioresource Technology • 2016

B. Neethu, Gourav Dhar Bhowmick, Makarand M. Ghangrekar

Biochemical Engineering Journal • 2019

Tong Lin, Wenqi Ding, Liming Sun et al.

Nano Energy • 2018

Rui Qiu, Baogang Zhang, Jiaxin Li et al.

Journal of Power Sources • 2017

Wendan Xue, Qixing Zhou, Fengxiang Li et al.

Journal of Power Sources • 2019

Md Tabish Noori, Sumat Chand Jain, Makarand M. Ghangrekar et al.

Bioresource Technology • 2016

Lihua Zhang, Yongyou Hu, Junfeng Chen et al.

Journal of Power Sources • 2018

Haolin Tang, Yan Zeng, Yinxiang Zeng et al.

Applied Catalysis B: Environmental • 2016

Xiaojing Li, Xin Wang, Qian Zhao et al.

Biosensors and Bioelectronics • 2016

Wulin Yang, Xu Wang, Ruggero Rossi et al.

Chemical Engineering Journal • 2019

Aiswarya Devi Sekar, Tamilmani Jayabalan, Harshiny Muthukumar et al.

Energy • 2019

Shijie You, Ming Ma, Wei Wang et al.

Advanced Energy Materials • 2016

Microbial fuel cell (MFC) can generate electricity based on oxidation of organic compounds by exoelectogens, giving rise to a promising potential for recovering electrical energy from organic wastewater. The structure and property of anode materials have inherent impact to extracellular electron transfer (EET), an interfacial process that greatly limits bioelectricity production of MFC. Herein, a three dimensional (3D) macroporous nitrogen‐enriched graphitic carbon (NGC) scaffold is fabricated from commercially available melamine foam using facile pyrolysis method. The NGC electrode is demonstrated to promote EET efficiently, achieving a power density of 750 mW m −2 based on pure cultured Shewanella oneidensis MR‐1 in acetate‐feeding MFC. The unique 3D open‐cell structure not only offers habitats for colonization of electroactive biofilm up to a maximal density but also provides macroporous architecture for internal mass transfer without concern of bio‐blocking and bio‐fouling. Additionally, nitrogen incorporation also plays a significant role in enhancing EET, where pyrrolic nitrogen is much more active than graphitic and pyridinic nitrogen as indicated by density functional theory calculation. This work provides a proof‐of‐concept demonstration of a high‐efficiency, cost‐effective, easily scaling‐up, and environmentally friendly anode material of bioelectrochemical systems for electricity generation, hydrogen production, and pollutant degradation.

Yan Yang, Yaqian Zhao, Cheng Tang et al.

Chemical Engineering Journal • 2019

Akshay D. Tharali, Namrata Sain, W. Jabez Osborne

Frontiers in Life Science • 2016

Bioelectricity production involves generation of electricity by anaerobic digestion of organic substrates by microbes. A microbial fuel cell (MFC) is a device that converts chemical energy released as a result of oxidation of complex organic carbon sources which are utilized as substrates by micro-organisms to produce electrical energy thereby proving to be an efficient means of sustainable energy production. The electrons released due to the microbial metabolism are captured to maintain a constant power density, without an effective carbon emission in the ecosystem. The various parameters involved in MFC technology toward power generation include maximum power density, coulombic efficiencies and sometimes chemical oxygen demand removal rate which evaluates the effectiveness of the device. Application of microbes toward bioremediation at the same time resulting in generation of electricity makes MFC technology a highly advantageous proposition which can be applied in various sectors of industrial, municipal and agricultural Waste Management. Although the efficiency of MFCs in power generation initially was low, recent modifications in the design, components and working have enhanced the power output to a significant level thereby enabling application of MFCs in various fields including wastewater treatment, biosensors and bioremediation. The following review provides an outline about the components involved, working, modifications and applications of MFC technology for various research and industrial objectives.

Asim Ali Yaqoob, Mohamad Nasir Mohamad Ibrahim, Amira Suriaty Yaakop et al.

Chemical Engineering Journal • 2020

Hengduo Xu, Xiangchun Quan, Zhutian Xiao et al.

Chemical Engineering Journal • 2017

Bin Bian, Dai Shi, Xiaobing Cai et al.

Nano Energy • 2017

Widya Ernayati Kosimaningrum, Thi Xuan Hương Le, Yaovi Holade et al.

ACS Applied Materials & Interfaces • 2017

The future of fuel cells that convert chemical energy to electricity relies mostly on the efficiency of oxygen reduction reaction (ORR) due to its sluggish kinetics. By effectively bypassing the use of organic surfactants, the postsynthesis steps for immobilization onto electrodes, catalytic ink preparation using binders, and the common problem of nanoparticles (NPs) detachment from the supports involved in traditional methodologies, we demonstrate a versatile electrodeposition method for growing anisotropic microstructures directly onto a three-dimensional (3D) carbon felt electrode, using platinum NPs as the elementary building blocks. The as-synthesized materials were extensively characterized by integrating methods of physical (thermogravimetric analysis, X-ray diffraction, scanning electron microscopy, inductively coupled plasma, and X-ray photoelectron spectroscopy) and electroanalytical (voltammetry, electrochemical impedance spectrometry) chemistry to examine the intricate relationship of material-to-performance and select the best-performing electrocatalyst to be applied in the model reaction of ORR for its practical integration into a microbial fuel cell (MFC). A tightly optimized procedure enables decorating an electrochemically activated carbon felt electrode by 40-60 nm ultrathin 3D-interconnected platinum nanoarrays leading to a hierarchical framework of ca. 500 nm. Half-cell reactions reveal that the highly rough metallic surface exhibits improved activity and stability toward ORR (E onset ∼ 1.1 V vs reversible hydrogen electrode, p(HO 2 - ) < 0.1%) and the hydrogen evolution reaction (-10 mA cm -2 for only 75 mV overpotential). Owing to its unique features, the developed material showed distinguished performance as an air-breathing cathode in a garden compost MFC, exhibiting better current and faster power generation than those of its equivalent classical double chamber. The enhanced performance of the material obtained herein is explained by the absence of any organic surfactants on the surface of the nanoarrays, the good metal-support interaction, particular morphology of the nanoarrays, and the reduced aggregation/detachment of particles. It promises a radical improvement in current surface reactions and paves a new way toward electrodes with regulated surface roughness, allowing for their successful application in heterogeneous catalysis.

Minrui Lu, Yuanyuan Sha, Vinod Kumar et al.

Biotechnology Advances • 2024

Afşın Yusuf Çetinkaya, Öğuz Kaan Ozdemir, Ahmet Demir et al.

Applied Biochemistry and Biotechnology • 2016

Yomna K. Abdallah, Alberto T. Estévez, Diaa Tantawy et al.

Journal of Microbiology and Biotechnology • 2019

In the present work, we isolated and identified Aspergillus sydowii NYKA 510 as the most potent laccase producer. Its medium constituents were optimized to produce the highest possible amount of laccase, which was after 7 days at 31°C and pH 5.2. Banana peel and peptone excelled in inducing laccase production at concentrations of 15.1 and 2.60 g/l, respectively. Addition of copper sulfate elevated enzyme yield to 145%. The fungus was employed in a microbial fuel cell (MFC). The best performance was obtained at 2000 Ω achieving 0.76 V, 380 mAm -2 , 160 mWm -2 , and 0.4 W. A project to design a self-sufficient lighting unit was implemented by employing a system of 2 sets of 4 MFCs each, connected in series, for electricity generation. A scanning electron microscopy image of A. sydowii NYKA 510 was utilized in algorithmic form generation equations for the design. The mixed patterning and patterned customized mass approach were developed by the authors and chosen for application in the design.

Ningshengjie Gao, Yanzhen Fan, Fei Long et al.

Chemosphere • 2020

S.S. Mwale, Onesmus Munyati, James Nyirenda

Journal of Solid State Electrochemistry • 2020

Cui‐e Zhao, Ziye Qiu, Jike Yang et al.

ACS Sustainable Chemistry & Engineering • 2020

Microbial fuel cells (MFCs) are highly appealing for recovering electricity from organic matter, with the help of electrogenic bacteria. However, the lack of cost-efficient oxygen reduction reaction (ORR) catalysts is the main limitation for the performance of MFCs, and the development of highly electrocatalytic active ORR catalysts for MFCs remains very challenging. Here, core/shell carbon materials doped with Co and N (NC@CoNC) are prepared from bimetallic metal–organic frameworks (MOFs) via a facile pyrolysis method. After being interconnected by reduced graphene oxide (rGO), this unique NC@CoNC/rGO composite exhibits excellent electrocatalytic activity when used as the cathode catalyst in MFCs. The as-fabricated NC@CoNC/rGO catalyst facilitates favorable four-electron ORR, which can be due to the uniform distribution of Co nanoparticles, high N content, large surface area, and conductive graphene framework. Furthermore, the optimized NC@CoNC/rGO achieves a maximum power density of 2350 mW m–2, which is even higher than that generated with commercial Pt/C (2002 mW m–2). This work demonstrates that the nonprecious metal catalyst NC@CoNC/rGO can be considered to be an good alternative in MFCs.

Kimberley D.Z. Duarte, Domenico Frattini, Yongchai Kwon

Applied Energy • 2019

Vesselin K. Krastev, Giacomo Falcucci

International Journal of Hydrogen Energy • 2019

Cuicui Lv, Bolong Liang, Kexun Li et al.

Biosensors and Bioelectronics • 2018