کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6608541 | 459541 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Significance of the Length of Carbon Nanotubes on the Bioelectrocatalytic Activity of Bilirubin Oxidase for Dioxygen Reduction
ترجمه فارسی عنوان
اهمیت طول نانولوله های کربنی بر فعالیت بیوالکترو کاتالیستی بیلی روبین اکسیداز برای کاهش دی اکسیژن
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Bilirubin oxidase (BOD) catalyzes 4eâ-reduction of O2 into H2O and is one of the enzymes allowing direct electron transfer (DET)-type bioelectrocatalysis. Mesoporous carbon materials are often used for constructing BOD-modified DET-type biocathodes. We have examined the performance of several multi-walled carbon nanotubes (MWCNTs) as cathode platforms for BOD-catalyzed bioelectrocatalytic O2 reduction. It has been found that the length of MWCNTs is a very important factor to control the performance. The Ï-Ï conjugated system with the carboxy groups on the surface of MWCNTs plays an important role in enhancing the DET-type bioelectrocatalytic activity of BOD. Water-soluble MWCNT with the length of as short as 1 â 4 μm is the most suitable material among the MWCNTs examined, and they have been used to construct a mesoporous carbon electrode without any binder. The catalytic current density has reached a diffusion-controlled level for the first time for BOD at an electrode rotating rate of 4000 rpm and at 25 °C (8 mA cmâ2).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 192, 20 February 2016, Pages 133-138
Journal: Electrochimica Acta - Volume 192, 20 February 2016, Pages 133-138
نویسندگان
Keisei So, Maki Onizuka, Takuji Komukai, Yuki Kitazumi, Osamu Shirai, Kenji Kano,