一种由氧化铈壳和碳芯构成的同轴纳米电缆，用于感测一氧化氮。
A coaxial nanocable textured by a cerium oxide shell and carbon core for sensing nitric oxide.
机构信息
Institute for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing, 400715, People's Republic of China.
State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400715, People's Republic of China.
出版信息
Mikrochim Acta. 2019 Nov 15;186(12):789. doi: 10.1007/s00604-019-3839-1.
A corn-like CeO/C coaxial cable textured by a cerium oxide shell and a carbon core was designed to sense NO. The carbon core possesses high electrical conductivity, and the CeO surface delivers excellent electrocatalytic activity. The sensor, typically operated at 0.8 V (vs. Ag/AgCl), exhibits a detection limit of 1.7 nM, which is 4-times lower than that of CeO nanotubes based one (at S/N = 3). It also displays wide linear response (up to 83 μM), a sensitivity of 0.81 μA μM cm, and fast response (2 s). These values are highly competitive to that of a CeO tube (0.92 μA μM cm and 2 s). The sensor was used to quantify NO that is released by Aspergillus flavus. Graphical abstractSchematic representation of corn-like CeO/C which can more sensitively and effectively detect NO released from A. flavus than when using CeO nanotubes, benefitting from its unique coaxial cable structure.
一种玉米状的 CeO/C 同轴线，由氧化铈外壳和碳芯组成，被设计用来感测 NO。碳芯具有高导电性，而 CeO 表面则具有出色的电催化活性。该传感器通常在 0.8 V（相对于 Ag/AgCl）下工作，其检测限为 1.7 nM，比基于 CeO 纳米管的传感器低 4 倍（在 S/N = 3 时）。它还显示出宽的线性响应（高达 83 μM），灵敏度为 0.81 μA μM cm，响应速度快（2 s）。这些值与 CeO 管（0.92 μA μM cm 和 2 s）相比具有很强的竞争力。该传感器用于量化黄曲霉释放的 NO。示意图玉米状 CeO/C 的示意图，与 CeO 纳米管相比，它可以更敏感和有效地检测到黄曲霉释放的 NO，这得益于其独特的同轴电缆结构。
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