CdO nanoparticles: robust inorganic additive for cadmium selective polymeric electrode based on N-phenylaza-15-crown-5

IF 2.3 4区化学 Q2 Agricultural and Biological Sciences

Journal of Inclusion Phenomena and Macrocyclic Chemistry Pub Date : 2021-08-07 DOI:10.1007/s10847-021-01098-y

Anis Golab Ghadaksaz, Arezoo Ghaemi, Roya Mohammadzadeh Kakhki

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引用次数: 1

Abstract

This study presents the development of a new and sensitive polyvinyl chloride electrode based on cadmium oxide (CdO) nanoparticles and N-phenylaza-15-crown-5 for the selective determination of cadmium cations. To this end, synthesized cadmium oxide nanoparticles were characterized through XRD, FT-IR and FESEM analysis. Then, CdO nanoparticles were applied as a modifier for the fabrication of the proposed electrode. The optimum membrane composition to construct the electrode comprised poly(vinyl chloride) (30%), nitrobenzene (61%), cadmium oxide nanoparticle (3%) and N-phenylaza-15-crown-5 (6%). The Nernstian slope of the electrode was obtained 27.3 ± 0.3 mV/decade in the 1.0 × 10^–8 to 1.0 × 10^–1 M concentration range, and the detection limit was obtained as 9.8 × 10^–9 M. The response time of the electrode was short (5 s), while its reversibility and lifetime were high. It was revealed that the operation pH range of the electrode ranged between 2 and 9, and the electrode had a very good selectivity to cadmium cations among the other interfering ions. Further, the electrode was successfully used as a potentiometric sensor in complexometric titrations and the measurement of cadmium cations in the environmental waters.

Graphic abstract

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纳米CdO:基于n-苯基-15-冠-5的镉选择性聚合物电极的坚固无机添加剂

本研究提出了一种基于氧化镉纳米颗粒和n-苯基-15-冠-5的新型灵敏聚氯乙烯电极，用于选择性测定镉阳离子。为此，通过XRD、FT-IR和FESEM对合成的氧化镉纳米颗粒进行了表征。然后，将CdO纳米颗粒作为修饰剂用于制备所提出的电极。构建电极的最佳膜组成为聚氯乙烯(30%)、硝基苯(61%)、氧化镉纳米颗粒(3%)和n-苯拉扎-15-冠-5(6%)。在1.0 × 10-8 ~ 1.0 × 10-1 M浓度范围内，电极的纳氏斜率为27.3±0.3 mV/ 10年，检出限为9.8 × 10-9 M。电极响应时间短(5 s)，可逆性和寿命高。结果表明，该电极的工作pH值在2 ~ 9之间，对镉离子有很好的选择性。此外，该电极还成功地作为电位传感器用于络合滴定和环境水中镉离子的测量。图形抽象

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来源期刊

Journal of Inclusion Phenomena and Macrocyclic Chemistry 化学-化学综合

CiteScore

3.30

自引率

8.70%

发文量

审稿时长

3-8 weeks

期刊介绍： The Journal of Inclusion Phenomena and Macrocyclic Chemistry is the premier interdisciplinary publication reporting on original research into all aspects of host-guest systems. Examples of specific areas of interest are: the preparation and characterization of new hosts and new host-guest systems, especially those involving macrocyclic ligands; crystallographic, spectroscopic, thermodynamic and theoretical studies; applications in chromatography and inclusion polymerization; enzyme modelling; molecular recognition and catalysis by inclusion compounds; intercalates in biological and non-biological systems, cyclodextrin complexes and their applications in the agriculture, flavoring, food and pharmaceutical industries; synthesis, characterization and applications of zeolites. The journal publishes primarily reports of original research and preliminary communications, provided the latter represent a significant advance in the understanding of inclusion science. Critical reviews dealing with recent advances in the field are a periodic feature of the journal.