Cancelliere Rocco, Rea Giuseppina, Micheli Laura, Mantegazza Pietro, Bauer Elvira Maria, El Khouri Asmaa, Tempesta Emanuela, Altomare Angela, Capelli Davide, Capitelli Francesco
Dipartimento di Scienze e Tecnologie Chimiche, Università degli Studi di Roma Tor Vergata, Via della Ricerca Scientifica, 00133 Rome, Italy.
Institute of Crystallography (IC), National Research Council (CNR), Via Salaria Km 29.300, 00016 Rome, Italy.
Materials (Basel). 2023 Jun 22;16(13):4522. doi: 10.3390/ma16134522.
In the quest to find powerful modifiers of screen-printed electrodes for sensing applications, a set of rare earth-doped CaRE(PO)(OH) (RE = La, Nd, Sm, Eu, Dy, and Tm and x = 0.01, 0.02, 0.10, and 0.20) hydroxyapatite (HAp) samples were subjected to an in-depth electrochemical characterization using electrochemical impedance spectroscopy and cyclic and square wave voltammetry. Among all of these, the inorganic phosphates doped with lanthanum proved to be the most reliable, revealing robust analytical performances in terms of sensitivity, repeatability, reproducibility, and reusability, hence paving the way for their exploitation in sensing applications. Structural data on La-doped HAp samples were also provided by using different techniques, including optical microscopy, X-ray diffraction, Rietveld refinement from X-ray data, Fourier transform infrared, and Raman vibrational spectroscopies, to complement the electrochemical characterization.
为了寻找用于传感应用的丝网印刷电极的强效改性剂，对一组稀土掺杂的CaRE(PO)(OH)（RE = La、Nd、Sm、Eu、Dy和Tm，x = 0.01、0.02、0.10和0.20）羟基磷灰石（HAp）样品进行了深入的电化学表征，采用了电化学阻抗谱、循环伏安法和方波伏安法。在所有这些样品中，掺杂镧的无机磷酸盐被证明是最可靠的，在灵敏度、重复性、再现性和可重复使用性方面表现出强大的分析性能，因此为其在传感应用中的开发铺平了道路。还通过使用不同技术提供了掺杂镧的HAp样品的结构数据，包括光学显微镜、X射线衍射、X射线数据的Rietveld精修、傅里叶变换红外光谱和拉曼振动光谱，以补充电化学表征。
