Tabrizi Niaz Jahed, Amjadi Mohammad, Hallaj Tooba
Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, 5166616471, Tabriz, Iran.
Cellular and Molecular Research Center, Cellular and Molecular Research Medicine Institute, Urmia University of Medical Sciences, 5714783734, Urmia, Iran.
Mikrochim Acta. 2025 Jan 14;192(2):79. doi: 10.1007/s00604-024-06877-1.
Fe, Ni, and Cu doped ceria nanoparticles (CeNPs) were prepared with a simple and one-pot hydrothermal synthesis method. We investigated the chemiluminescence (CL) interaction between these NPs and rhodamine B (Rh B) and found that the highest CL intensity was related to the Rh B- Cu doped CeNPs. We assigned that to the higher catalytic property of Cu doped NPs compared to the others. Cu doped CeNPs have been applied for the first time as a catalyst in chemiluminescence reactions. Rh B- Cu doped CeNPs reaction was introduced as a novel CL system, and its mechanism was studied. Considering the sensitivity, simplicity, portability, and rapidness of the CL methods, we applied the introduced reaction to the development of a CL sensor for nitrite monitoring. In the presence of nitrite, the CL intensity of the system decreased, and there was a linear relationship between the CL intensity and nitrite concentration in the range 0.5-100 µM. Based on this fact, a sensitive and selective CL sensor with the detection limit of 0.2 µM was established for nitrite detection in various food and water samples.
采用简单的一锅水热合成法制备了铁、镍和铜掺杂的二氧化铈纳米颗粒（CeNPs）。我们研究了这些纳米颗粒与罗丹明B（Rh B）之间的化学发光（CL）相互作用，发现最高的CL强度与Rh B - 铜掺杂的CeNPs相关。我们将其归因于铜掺杂纳米颗粒相较于其他纳米颗粒具有更高的催化性能。铜掺杂的CeNPs首次被用作化学发光反应的催化剂。Rh B - 铜掺杂的CeNPs反应被引入作为一种新型的CL体系，并对其机理进行了研究。考虑到CL方法的灵敏度、简便性、便携性和快速性，我们将引入的反应应用于开发用于亚硝酸盐监测的CL传感器。在亚硝酸盐存在下，体系的CL强度降低，且在0.5 - 100 µM范围内CL强度与亚硝酸盐浓度之间存在线性关系。基于这一事实，建立了一种灵敏且选择性好的CL传感器，用于检测各种食品和水样中的亚硝酸盐，检测限为0.2 µM。
