Carboxyl groups trigger the activity of carbon nanotube catalysts for the oxygen reduction reaction and agar conversion

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	Carboxyl groups trigger the activity of carbon nanotube catalysts for the oxygen reduction reaction and agar conversion
	Y. X.; Chen Zhang, C. L.; Peng, L. X.; Ma, Z. S.; Zhang, Y. J.; Xia, H. H.; Yang, A. L.; Wang, L.; Su, D. S.; Zhang, J.
	2015
发表期刊	Nano Research
ISSN	1998-0124
卷号	8 期号:2 页码:502-511
摘要	Ozone treatment is a common way to functionalize commercial multi-walled carbon nanotubes (CNTs) with various oxygen functionalities like carboxyl, phenol and lactone groups, in order to enhance their textural properties and chemical activity. In order to detail the effect of each functional group, we correlated the activity with the surface density of each group, and found that the carboxyl groups play a pivotal role in two important catalytic reactions, namely the electrochemical oxygen reduction reaction (ORR) and agar conversion to 5-hydroxymethylfurfural (HMF). During the processes, the hydrophilic surface provides a strong affinity for reaction substrates while the improved porosity allows the efficient diffusion of reactants and products. Furthermore, the activity of functionalized CNTs for agar conversion remained almost unchanged during nine cycles of reaction. This work highlights a strategy for improving the activity of CNTs for electrochemical ORR and agar conversion reactions, as well a promising application of carboxyl-rich CNTs as a solid acid catalyst to produce high-purity HMF-an important chemical intermediate.
部门归属	[zhang, yexin ; chen, chunlin ; ma, zhongsen ; zhang, yajie ; xia, hengheng ; wang, lei ; zhang, jian] chinese acad sci, ningbo inst mat technol & engn, ningbo 315201, zhejiang, peoples r china. [peng, lixia ; yang, aili] sci & technol surface phys & chem lab, mianyang 621907, peoples r china. [su, dang sheng] chinese acad sci, inst met res, shenyang 110016, peoples r china. ; zhang, yj (reprint author), chinese acad sci, ningbo inst mat technol & engn, ningbo 315201, zhejiang, peoples r china. ; jzhang@nimte.ac.cn ; wanglei@nimte.ac.cn ; zhangyj@nimte.ac.cn
关键词	Carbon Nanotubes Functionalization Carboxyl Group Oxygen Reduction Reaction Biomass Conversion Wet Air Oxidation Electrocatalytic Activity Activated Carbon Ozone Performance Adsorption Electrodes Graphite Fructose
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74028
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. X.,Chen Zhang, C. L.,Peng, L. X.,et al. Carboxyl groups trigger the activity of carbon nanotube catalysts for the oxygen reduction reaction and agar conversion[J]. Nano Research,2015,8(2):502-511.
APA	Y. X..,Chen Zhang, C. L..,Peng, L. X..,Ma, Z. S..,Zhang, Y. J..,...&Zhang, J..(2015).Carboxyl groups trigger the activity of carbon nanotube catalysts for the oxygen reduction reaction and agar conversion.Nano Research,8(2),502-511.
MLA	Y. X.,et al."Carboxyl groups trigger the activity of carbon nanotube catalysts for the oxygen reduction reaction and agar conversion".Nano Research 8.2(2015):502-511.