氯化物
降水
选择性
等离子体子
纳米颗粒
离子
化学
水溶液中的金属离子
纳米技术
光子学
无定形固体
材料科学
光电子学
有机化学
催化作用
物理
气象学
作者
Van Tan Tran,Van‐Duong Dao,Huu‐Quang Nguyen,Lemma Teshome Tufa,Njemuwa Nwaji,Hoang Van Tuan,Anh‐Tuan Le
出处
期刊:RSC Advances
[The Royal Society of Chemistry]
日期:2023-01-01
卷期号:13 (49): 34358-34365
被引量:1
摘要
The rapid and efficient detection of chloride (Cl-) ions is crucial in a variety of fields, making the development of advanced sensing methods such as colorimetric sensors an imperative advancement in analytical chemistry. Herein, a novel, selective, and straightforward paper-based colorimetric sensing platform has been developed utilizing an amorphous photonic array (APA) of magnetoplasmonic Ag@Fe3O4 nanoparticles (MagPlas NPs) for the detection of Cl- in water. Taking advantage of the highly responsive APA, the key principle of this sensing method is based on the chemical reaction between Ag+ and Cl-, which results in the precipitation of high-refractive index (RI) AgCl. This assay, distinct from typical plasmonic sensors that rely heavily on nanoparticle aggregation/anti-aggregation, is premised on the precipitation reaction of Ag+ and Cl-. In the presence of Cl-, a rapid, distinctive color alteration from royal purple to a dark sky blue is visually observable within a short time of a few minutes, eliminating the necessity for any surface modification procedures. Comprehensive assessments substantiated that these sensors display commendable sensitivity, selectivity, and stability, thereby establishing their effective applicability for Cl- analysis in various technological fields.
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