Zeng Jinfeng, Ding Xiaoteng, Chen Liwei, Jiao Le, Wang Yuze, Windle Christopher D, Han Qing, Qu Liangti
Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education of China, School of Chemistry and Chemical Engineering, Beijing Institute of Technology Beijing 100081 P. R. China
College of Life Sciences, Qingdao University Qingdao 266071 P. R. China.
RSC Adv. 2019 Sep 9;9(48):28207-28212. doi: 10.1039/c9ra03802g. eCollection 2019 Sep 3.
A graphene microfiber (GF) modified with ultrafine Cu O nanoparticles (Cu ONPs/GF) has been fabricated by direct annealing of electrodeposited nano-sized copper-based metal organic frameworks (HKUST-1) and used as an electrode for nonenzymatic HO sensing. Benefiting from the unique microfiber architecture and synergetic effects, as well as strong coupling between components with many active sites and boosted electron transport, the Cu ONPs/GF electrode shows prominent sensitivity, selectivity and long-term operational stability for the detection of HO. Further work successfully applied this Cu ONPs/GF electrode to detection of HO in real samples such as milk and human serum. These results indicate that the Cu ONPs/GF is a promising mini-sized sensor in electrochemical analysis.
通过对电沉积的纳米尺寸铜基金属有机框架（HKUST-1）进行直接退火，制备了一种用超细Cu₂O纳米颗粒修饰的石墨烯微纤维（Cu₂ONPs/GF），并将其用作非酶促H₂O₂传感的电极。得益于独特的微纤维结构和协同效应，以及具有许多活性位点的组分之间的强耦合和增强的电子传输，Cu₂ONPs/GF电极在检测H₂O₂时表现出卓越的灵敏度、选择性和长期操作稳定性。进一步的工作成功地将这种Cu₂ONPs/GF电极应用于牛奶和人血清等实际样品中H₂O₂的检测。这些结果表明，Cu₂ONPs/GF在电化学分析中是一种很有前景的微型传感器。
