Enhancement of interfacial bioelectrocatalysis in Shewanella microbial fuel cells by a hierarchical porous carbon–silica composite derived from distiller's grains

2018 ◽  
Vol 2 (3) ◽  
pp. 655-662 ◽  
Author(s):  
Xiaoshuai Wu ◽  
Yan Qiao ◽  
Zhuanzhuan Shi ◽  
Chang Ming Li
Keyword(s):  
Fuel Cell ◽  
Synergistic Effect ◽  
Porous Structure ◽  
Porous Carbon ◽  
Microbial Fuel Cells ◽  
Hierarchical Porous Carbon ◽  
Distiller's Grains ◽  
Hierarchically Porous Structure ◽  
Hierarchical Porous ◽  
Crust Surface

A synergistic effect of a hierarchically porous structure and a siliceous crust surface for an enhanced bioelectrocatalysis activity in a microbial fuel cell.

scholarly journals Cellulose Aerogel Derived Hierarchical Porous Carbon for Enhancing Flavin-Based Interfacial Electron Transfer in Microbial Fuel Cells

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 664 ◽  
Author(s):  
Deng Wang ◽  
Ying Wang ◽  
Jing Yang ◽  
Xiu He ◽  
Rui-Jie Wang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Fuel Cells ◽  
Porous Structure ◽  
Porous Carbon ◽  
Microbial Fuel Cells ◽  
Active Surface ◽  
Interfacial Electron Transfer ◽  
Hierarchical Porous Carbon ◽  
Cellulose Aerogel ◽  
Hierarchical Porous

The flavin-based indirect electron transfer process between electroactive bacteria and solid electrode is crucial for microbial fuel cells (MFCs). Here, a cellulose-NaOH-urea mixture aerogel derived hierarchical porous carbon (CPC) is developed to promote the flavin based interfacial electron transfer. The porous structure of the CPC can be tailored via adjusting the ratio of urea in the cellulose aerogel precursor to obtain CPCs with different type of dominant pores. According to the electrocatalytic performance of different CPC electrodes, the CPCs with higher meso- and macropore area exhibit greatly improved flavin redox reaction. While, the CPC-9 with appropriate porous structure achieves highest power density in Shewanella putrefaciens CN32 MFC due to larger active surface for flavin mediated interfacial electron transfer and higher biofilm loading. Considering that the CPC is just obtained from the pyrolysis of the cellulose-NaOH-urea aerogel, this work also provides a facile approach for porous carbon preparation.

Enhanced electrocatalytic and supercapacitive performance using the synergistic effect of defect-rich N/S co-doped hierarchical porous carbon

2020 ◽  
Vol 4 (11) ◽  
pp. 5697-5708 ◽  
Author(s):  
Mohammad Shaad Ansari ◽  
Thomas Nesakumar Jebakumar Immanuel Edison ◽  
Yong Rok Lee
Keyword(s):  
Synergistic Effect ◽  
Porous Carbon ◽  
Specific Capacity ◽  
Cycling Stability ◽  
Hierarchical Porous Carbon ◽  
Supercapacitive Performance ◽  
Hierarchical Porous ◽  
Superior Cycling Stability ◽  
Co Doped ◽  
Carbon Based

A N/S co-doped hierarchical porous carbon-based electrode shows superior cycling stability and reversibility without a significant reduction in specific capacity.

Construction of strawberry-like Ni3S2@Co9S8 heteronanoparticle-embedded biomass-derived 3D N-doped hierarchical porous carbon for ultrahigh energy density supercapacitors

2019 ◽  
Vol 7 (29) ◽  
pp. 17345-17356 ◽  
Author(s):  
Shifu Wang ◽  
Zuoyi Xiao ◽  
Shangru Zhai ◽  
Haisong Wang ◽  
Weijie Cai ◽  
...  
Keyword(s):  
Energy Density ◽  
Porous Structure ◽  
Porous Carbon ◽  
Electrode Materials ◽  
High Surface ◽  
High Surface Area ◽  
Ultrahigh Energy ◽  
Hierarchical Porous Structure ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous

The design of advanced supercapacitors requires electrode materials that combine high surface area with a developed hierarchical porous structure to facilitate ion transport and electrolyte permeability.

Preparation of Hierarchical Porous Carbon Derived from Averrhoa Bilimbi and Its Diffusion Properties

2014 ◽  
Vol 69 (5) ◽  
Author(s):  
Nurul Najidah Mohamed ◽  
Lai Sin Yuan ◽  
Lee Siew Ling ◽  
Ho Chin Siong ◽  
Sheela Chandren ◽  
...  
Keyword(s):  
Porous Structure ◽  
Porous Carbon ◽  
Natural Material ◽  
Drying Method ◽  
Hierarchical Porous Carbon ◽  
Hierarchically Porous ◽  
Hierarchical Porous ◽  
Different Types ◽  
Interconnected Pores ◽  
Diffusion Properties

In this study, a hierarchically porous carbon was prepared from a natural material, Averrhoa bilimbi, also known as bilimbi. The bilimbis were cut into preferred shape and size before drying by freeze drying method. The bilimbis were then subjected to pyrolysis at temperature of 400°C and transformed to porous carbon. Scanning electron microscopy (SEM) revealed that the bilimbis have a hierarchically porous structure in the macro-range. The diameter of the porosity decreased inwards from 30 to 8μm. Different types of motor oil, which were used to represent bulky molecules, were employed to test the diffusivity of these molecules from the bilimbi. It was found that the oils were able to diffuse through the hierarchically porous bilimbi in 2 to 3 hours, depending on the viscosity of the oils. Therefore, it can be concluded that, Averrhoa bilimbi possesses hierarchical porous structure with interconnected pores and capability to diffuse bulky molecules.     

N, S synergistic effect in hierarchical porous carbon for enhanced NRR performance

Carbon ◽  
2021 ◽  
Author(s):  
Jin Wang ◽  
Hao Huang ◽  
Peng Wang ◽  
Shuang Wang ◽  
Jinping Li
Keyword(s):  
Synergistic Effect ◽  
Porous Carbon ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous

PtFe catalysts supported on hierarchical porous carbon toward oxygen reduction reaction in microbial fuel cells

2019 ◽  
Vol 23 (9) ◽  
pp. 2683-2693 ◽  
Author(s):  
Angélica María Baena-Moncada ◽  
Rusbel Coneo-Rodríguez ◽  
Adolfo La Rosa-Toro ◽  
Elena Pastor ◽  
Cesar Barbero ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Microbial Fuel Cells ◽  
Reduction Reaction ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous

Mycelial pellet-derived heteroatom-doped carbon nanosheets with a three-dimensional hierarchical porous structure for efficient capacitive deionization

2019 ◽  
Vol 6 (5) ◽  
pp. 1430-1442 ◽  
Author(s):  
Yajing Huang ◽  
Jingling Yang ◽  
Lingling Hu ◽  
Dehua Xia ◽  
Qing Zhang ◽  
...  
Keyword(s):  
Porous Structure ◽  
Porous Carbon ◽  
Three Dimensional ◽  
Capacitive Deionization ◽  
Hierarchical Porous Structure ◽  
Hierarchical Porous Carbon ◽  
Carbon Nanosheets ◽  
Mycelial Pellet ◽  
Hierarchical Porous

The mycelial pellet-derived hierarchical porous carbon nanosheets were fabricated facilely and showed high electrosorption capacity of 18.71 mg g−1 for capacitive deionization.

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