Synergistic oxidation of NADH on bimetallic CoPt nanoparticles decorated carbon nitride nanotubes
Synergistic oxidation of NADH on bimetallic CoPt nanoparticles decorated carbon nitride nanotubes
复制标题
DOI：
10.1016/j.snb.2014.11.013
复制
发表时间：
2015-03-01
影响因子：
8.4
通讯作者：
Paik, Ungyu
中科院分区：
文献类型：
--
作者：
Devadoss, Anitha;Lee, Jung Woo;Paik, Ungyu
我们证明，与CoPt纳米颗粒（CoPt NPs）改性的氮化碳纳米管（CNNT）的混合氧化还原烟酰胺腺嘌呤二核苷酸（NADH）在更大程度上比单独的碳纳米管（CNT）或CNNT由于CNNT和CoPt NPs之间的协同相互作用，通过改进的内部网络。sp（2）碳网络中的异质氮原子为原位合成均匀尺寸的CoPt NPs提供了强结合位点。与原始CNT或CNNT相比，CoPt-CNNT混合电极上的非均相电荷转移的增加增强了NADH在低施加电位下的电化学氧化。我们的研究结果表明，CoPt-CNNT杂化物是高度稳定的，非常适合用于电化学传感。(C)2014爱思唯尔有限公司版权所有。
We demonstrate that carbon nitride nanotube (CNNT) hybrids modified with CoPt nanoparticles (CoPt NPs) oxidize reduced nicotinamide adenine dinucleotide (NADH) to a greater extent than carbon nanotubes (CNTs) or CNNTs alone due to synergistic interactions between the CNNTs and the CoPt NPs through the improved internal network. Heterogeneous nitrogen atoms in the sp(2) carbon network provide strong binding sites for in-situ synthesis of CoPt NPs of homogeneous size. The increase in heterogeneous charge transfer on the CoPt-CNNT hybrid electrode enhanced the electrochemical oxidation of NADH at a low applied potential compared to those for pristine CNTs or CNNTs. Our results suggest that CoPt-CNNT hybrids are highly stable and ideal for use in electrochemical sensing. (C) 2014 Elsevier B.V. All rights reserved.