Simultaneous Quantification of Electron Transfer by Carbon Matrices and Functional Groups in Pyrogenic Carbon

2018 ◽  
Vol 52 (15) ◽  
pp. 8538-8547 ◽  
Author(s):  
Tianran Sun ◽  
Barnaby D. A. Levin ◽  
Michael P. Schmidt ◽  
Juan J. L. Guzman ◽  
Akio Enders ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Functional Groups ◽  
Simultaneous Quantification ◽  
Pyrogenic Carbon

scholarly journals Corrigendum: Biomass-Derived Hierarchical Nanoporous Carbon with Rich Functional Groups for Direct-Electron-Transfer-Based Glucose Sensing

2016 ◽  
Vol 3 (4) ◽  
pp. 676-676 ◽  
Author(s):  
Xiaoling Zhong ◽  
Weiyong Yuan ◽  
Yuejun Kang ◽  
Jiale Xie ◽  
Fangxin Hu ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Functional Groups ◽  
Direct Electron Transfer ◽  
Nanoporous Carbon ◽  
Glucose Sensing

Impact of Graphitic Structures in Pyrogenic Carbon on Microbial Reduction of Ferrihydrite

2021 ◽  
Author(s):  
wentao yu ◽  
baoliang chen
Keyword(s):  
Electron Transfer ◽  
Pyrolysis Temperature ◽  
Shewanella Oneidensis ◽  
Exchange Capacity ◽  
Microbial Reduction ◽  
Systematic Evaluation ◽  
Extracellular Electron Transfer ◽  
Pyrogenic Carbon ◽  
The Impact

<p>Pyrogenic carbon plays important roles in microbial reduction of ferrihydrite by shuttling electrons in the extracellular electron transfer (EET) processes. Despite its importance, a full assessment on the impact of graphitic structures in pyrogenic carbon on microbial reduction of ferrihydrite has not been conducted. This study is a systematic evaluation of microbial ferrihydrite reduction by Shewanella oneidensis MR-1 in the presence of pyrogenic carbon with various graphitization extents. The results showed that the rates and extents of microbial ferrihydrite reduction were significantly enhanced in the presence of pyrogenic carbon, and increased with increasing pyrolysis temperature. Combined spectroscopic and electrochemical analyses suggested that the rate of microbial ferrihydrite reduction were dependent on the electrical conductivity of pyrogenic carbon (i.e., graphitization extent), rather than the electron exchange capacity. The key role of graphitic structures in pyrogenic carbon in mediating EET was further evidenced by larger microbial electrolysis current with pyrogenic carbon prepared at higher pyrolysis temperatures. This study provides new insights into the electron transfer in the pyrogenic carbon-mediated microbial reduction of ferrihydrite.</p>

Adjustable anchoring of Ni/Co cations by oxygen-containing functional groups on functionalized graphite paper and accelerated mass/electron transfer for overall water splitting

2020 ◽  
Vol 10 (8) ◽  
pp. 2627-2643 ◽  
Author(s):  
Yiyi Huang ◽  
Lei Sun ◽  
Zebin Yu ◽  
Ronghua Jiang ◽  
Jun Huang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Water Splitting ◽  
Functional Groups ◽  
Cellular Network ◽  
Close Contact ◽  
Overall Water Splitting ◽  
Porous Nanosheets ◽  
Electron Transportation

NCS–NCO/FGP0.44 with a cellular network of porous nanosheets and close-contact heterointerface reveals accelerated interfacial mass/electron transportation for overall water splitting.

Insights into the Electron-Transfer Regime of Peroxydisulfate Activation on Carbon Nanotubes: The Role of Oxygen Functional Groups

2019 ◽  
Vol 54 (2) ◽  
pp. 1267-1275 ◽  
Author(s):  
Wei Ren ◽  
Liangliang Xiong ◽  
Gang Nie ◽  
Hui Zhang ◽  
Xiaoguang Duan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electron Transfer ◽  
Functional Groups ◽  
Oxygen Functional Groups

scholarly journals Rapid electron transfer by the carbon matrix in natural pyrogenic carbon

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Tianran Sun ◽  
Barnaby D. A. Levin ◽  
Juan J. L. Guzman ◽  
Akio Enders ◽  
David A. Muller ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Carbon Matrix ◽  
Pyrogenic Carbon

scholarly journals Performance Improvement of Dye-Sensitized Solar Cell- (DSSC-) Based Natural Dyes by Clathrin Protein

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Prihanto Trihutomo ◽  
Sudjito Soeparman ◽  
Denny Widhiyanuriyawan ◽  
Lilis Yuliati
Keyword(s):  
Electron Transfer ◽  
Solar Cell ◽  
Functional Groups ◽  
Protein Concentration ◽  
Natural Dyes ◽  
Semiconductor Layer ◽  
Dye Sensitized Solar Cell ◽  
Vesicle Membrane ◽  
Lower Efficiency ◽  
Dye Sensitized

Dye-Sensitized Solar Cell (DSSC) is a solar cell device that works using electrochemical principles in which sensitive dyes are absorbed in the TiO2 photoelectrode layer. The problem of DSSC-based natural dyes is the lower efficiency than silicon solar cells. This low efficiency is due to the barrier of electron transfer in the TiO2 semiconductor layer. In this study, the addition of clathrin protein to the TiO2 layer was used to increase electron transfer in the semiconductor layer resulting in improved DSSC performance. Clathrin is a protein that plays a role in the formation of transport vesicle membrane in eukaryotic cells. The method used in this study is clathrin protein with a concentration of 0%, 25%, 50%, and 75% added to TiO2 in DSSC structure. Photovoltaic characteristics of DSSC were measured using a data logger to determine the performance of DSSC, layer morphology was analyzed using Scanning Electron Microscopy (SEM), the element content in DSSC was analyzed using Energy-Dispersive X-ray Spectroscopy (EDS), and functional groups in DSSC layers were analyzed using Fourier-Transform Infrared Spectroscopy (FTIR). The result of this study is the addition of clathrin protein can improve DSSC performance, which resulted in the highest performance of DSSC on 75% clathrin protein addition with efficiency=1.465%, Isc=5.247 mA, and Voc=657 mV. From the results of SEM analysis, it appears that clathrin protein molecules fill the cavities in TiO2 molecules. EDS analysis shows an increase in carbon, oxygen, and phosphorus content in TiO2 layers with increasing clathrin protein concentration. FTIR analysis shows an increasingly sharp absorption in the FTIR spectrum of protein-forming functional groups by increasing clathrin protein concentration in DSSC.

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