scholarly journals Enhanced Performance of Bioelectrodes Made with Amination-Modified Glucose Oxidase Immobilized on Carboxyl-Functionalized Ordered Mesoporous Carbon

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3086
Author(s):  
Chuhan Lv ◽  
Xuewei Yang ◽  
Zongkang Wang ◽  
Ming Ying ◽  
Qingguo Han ◽  
...  
Keyword(s):  
Glucose Oxidase ◽  
Mesoporous Carbon ◽  
Fold Increase ◽  
Electrochemical Analysis ◽  
Electron Transfer Rate ◽  
Anodic Reaction ◽  
Ordered Mesoporous ◽  
Electron Transfer Rate Constant ◽  
Improved Performance ◽  
Charge Transfer Coefficient

This research reveals the improved performance of bioelectrodes made with amination-modified glucose oxidase (GOx-NH2) and carboxyl-functionalized mesoporous carbon (OMC-COOH). Results showed that when applied with 10 mM EDC amination, the functional groups of NH2 were successfully added to GOx, according to the analysis of 1H-NMR, elemental composition, and FTIR spectra. Moreover, after the aminated modification, increased enzyme immobilization (124.01 ± 1.49 mg GOx-NH2/g OMC-COOH; 2.77-fold increase) and enzyme activity (1.17-fold increase) were achieved, compared with those of non-modified GOx. Electrochemical analysis showed that aminated modification enhanced the peak current intensity of Nafion/GOx-NH2/OMC-COOH (1.32-fold increase), with increases in the charge transfer coefficient α (0.54), the apparent electron transfer rate constant ks (2.54 s−1), and the surface coverage Γ (2.91 × 10−9 mol·cm−2). Results showed that GOx-NH2/OMC-COOH exhibited impressive electro-activity and a favorable anodic reaction.

Study on an improved bio-electrode made with glucose oxidase immobilized mesoporous carbon in biofuel cells

RSC Advances ◽  
2016 ◽  
Vol 6 (29) ◽  
pp. 24451-24457 ◽  
Author(s):  
Xuewei Yang ◽  
Wenqiao Yuan ◽  
Dawei Li ◽  
Xiangwu Zhang
Keyword(s):  
Response Surface Methodology ◽  
Glucose Oxidase ◽  
Response Surface ◽  
Process Optimization ◽  
Mesoporous Carbon ◽  
Biofuel Cells ◽  
Ordered Mesoporous Carbon ◽  
Ordered Mesoporous

Response surface methodology (RSM) was used for process optimization to immobilize glucose oxidase (GOx) on ordered mesoporous carbon (OMC).

Advanced ordered mesoporous carbon with fast Li-ion diffusion for lithium–selenium sulfide batteries in a carbonate-based electrolyte

Carbon ◽  
2020 ◽  
Vol 170 ◽  
pp. 236-244
Author(s):  
Wonhee Kim ◽  
Jiyeon Lee ◽  
Seungmin Lee ◽  
KwangSup Eom ◽  
Chanho Pak ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Ion Diffusion ◽  
Ordered Mesoporous ◽  
Li Ion ◽  
Selenium Sulfide

scholarly journals Efficient Batch and Fixed-Bed Sequestration of a Basic Dye using a Novel Variant of Ordered Mesoporous Carbon as Adsorbent

2021 ◽  
pp. 103186
Author(s):  
Asna Mariyam ◽  
Jyoti Mittal ◽  
Farzeen Sakina ◽  
Richard T. Baker ◽  
Ashok K. Sharma ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Fixed Bed ◽  
Ordered Mesoporous Carbon ◽  
Basic Dye ◽  
Ordered Mesoporous ◽  
Novel Variant

scholarly journals A Hierarchically Ordered Mesoporous-Carbon-Supported Iron Sulfide Anode for High-Rate Na-Ion Storage

Molecules ◽  
2021 ◽  
Vol 26 (14) ◽  
pp. 4349
Author(s):  
Anupriya K. Haridas ◽  
Natarajan Angulakshmi ◽  
Arul Manuel Stephan ◽  
Younki Lee ◽  
Jou-Hyeon Ahn
Keyword(s):  
Mesoporous Carbon ◽  
Anode Materials ◽  
Iron Sulfide ◽  
Carbon Composite ◽  
Ordered Mesoporous Carbon ◽  
Cycle Life ◽  
High Rate ◽  
Volume Changes ◽  
Ordered Mesoporous ◽  
Ion Storage

Sodium-ion batteries (SIBs) are promising alternatives to lithium-based energy storage devices for large-scale applications, but conventional lithium-ion battery anode materials do not provide adequate reversible Na-ion storage. In contrast, conversion-based transition metal sulfides have high theoretical capacities and are suitable anode materials for SIBs. Iron sulfide (FeS) is environmentally benign and inexpensive but suffers from low conductivity and sluggish Na-ion diffusion kinetics. In addition, significant volume changes during the sodiation of FeS destroy the electrode structure and shorten the cycle life. Herein, we report the rational design of the FeS/carbon composite, specifically FeS encapsulated within a hierarchically ordered mesoporous carbon prepared via nanocasting using a SBA-15 template with stable cycle life. We evaluated the Na-ion storage properties and found that the parallel 2D mesoporous channels in the resultant FeS/carbon composite enhanced the conductivity, buffered the volume changes, and prevented unwanted side reactions. Further, high-rate Na-ion storage (363.4 mAh g−1 after 500 cycles at 2 A g−1, 132.5 mAh g−1 at 20 A g−1) was achieved, better than that of the bare FeS electrode, indicating the benefit of structural confinement for rapid ion transfer, and demonstrating the excellent electrochemical performance of this anode material at high rates.

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