检索结果-南通市图书馆

Multimodal chemo-/magneto-/phototaxis of 3G CNT-bots to power fuel cells

Microsystems & Nanoengineering 2020年第1期6卷 1149-1160页

作者： Shirsendu Mitra.Nirma. Roy Surjendu Maity Dipankar Bandyopadhyay Department of Chemical Engineering Indian Institute of Technology GuwahatiGuwahatiAssam 781039India Centre for Nanotechnology Indian Institute of Technology GuwahatiGuwahatiAssam 781039India

We report the development of a 3G microswimmer,namely,CNT-bot,capable of undergoing acid-,alkali-,magneto-and phototaxis inside acidic or alkaline baths of peroxide fuel and/or water.The use of carboxyl-functionalised multi-walled carbon nanotubes(MWCNTs)facilitated the propulsion of CNT-bots in an alkaline-water solution by ejecting carbon-dioxide bubbles.Furthermore,doping of magnetite nanoparticles(FeONPs),ferrous ions(Fe^(2+))and titanium dioxide nanoparticles(TiONPs)induces magnetic,chemical and photonic modes of propulsion.While FeONPs stimulated magnetotaxis at a rate of up to~10 body lengths per second under the influence of a bar magnet,chemotaxis of a similar speed in a peroxide fuel was achieved by bubble-propulsion of oxygen gas originating from the Fenton reaction.In addition,the light-stimulated photo-Fenton reaction led to phototaxis of CNT-bots.A thin coating of magnesium imparted a half-faced Janus appearance to the CNT-bots,which facilitated motion in normal or acidic water media through the ejection of hydrogen gas bubbles.This chemotaxis could be transformed into pH-stimulated directional motion by establishing an acid or alkali concentration gradient across the peroxide and/or water baths.The capacity of CNT-bots to produce oxygen(hydrogen)bubbles in peroxide(acidic water)fuel was exploited to power a PEM fuel cell to generate electricity.The pure oxygen and hydrogen gases generated by CNT-bots in separate chambers were fed directly into the fuel cell in which the incessant motions of the particle facilitated the creation and release of the pure gases to achieve on-demand electricity generation.The motor could also induce dye degradation through advanced oxidation owing to the production of intermediate hydroxyl radicals during the Fenton reaction.

关键词： alkali dioxide gases

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：