College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, People's Republic of China.
Nanotechnology. 2020 Aug 7;31(32):325502. doi: 10.1088/1361-6528/ab8c77. Epub 2020 Apr 23.
Co(OH) nanosheets/Cu(OH) nanorods composite electrodes for non-enzymatic glucose detection were fabricated by electrodepositing Co(OH) nanosheets on Cu(OH) nanorods substrate grown directly on the copper sheet via a simple one-step reaction. The Co(OH) nanosheets/Cu(OH) nanorods composite electrode was characterized by scanning electron microscopy, energy dispersive x-ray spectroscopy, x-ray diffraction and x-ray photoelectron spectroscopy. The glucose sensing performance of the composite electrode was investigated by cyclic voltammetry and chronoamperometry. The composite electrode shows high sensitivity of 2366 µA mM cm up to 2 mM with a lower detection limit of 0.17 mM (S/N = 3). The composite electrode is highly selective to glucose in the presence of various substances that always co-exist with glucose in real blood samples. The response of the composite towards human blood serum was in good agreement with that of commercially available glucose sensors, suggesting that a promising electrode material for highly sensitive and selective non enzymatic detection of glucose can be envisioned.
Co(OH)纳米片/Cu(OH)纳米棒复合电极通过在铜片上直接生长的 Cu(OH)纳米棒基底上电沉积 Co(OH)纳米片来制备，用于非酶葡萄糖检测。Co(OH)纳米片/Cu(OH)纳米棒复合电极通过扫描电子显微镜、能量色散 X 射线光谱、X 射线衍射和 X 射线光电子能谱进行了表征。通过循环伏安法和计时电流法研究了复合电极的葡萄糖传感性能。该复合电极在 0.17mM（S/N=3）的低检测限下，对 2mM 以内的葡萄糖具有高达 2366µA mM cm 的高灵敏度。在各种与实际血液样本中葡萄糖共存的物质存在下，复合电极对葡萄糖具有高度选择性。复合电极对人血清的响应与市售葡萄糖传感器的响应吻合良好，表明可以设想这种复合电极材料是一种用于高灵敏度和选择性非酶葡萄糖检测的有前途的电极材料。
