Abstract A Zinc metal–organic framework (MOF) is prepared and as a host to incorporated with Eu3+ ions (2,6-Naphthalenedicarboxylic acid is used as the ligand) by a solvothermal method and post-synthetic modification method (PSM). The obtained luminescent material Eu(3 + )@Zn-NDC is characterized by XRD, IR, TGA and SEM. Eu(3+)@Zn-NDC show three sensing channels for Cr3+, three good linearities exist ranging from 1 × 10−3 to 7.5 × 10−5 mol/L. The results show that the Eu(3+)@Zn-NDC exhibits selective, sensitive and quantitative response to Cr3+ and the sensing range is broaden to meet practical application. Its sensing mechanism is discussed. This is first time that Eu(3+)@ Zn-NDC is promising three-channel sensor for Cr3+ ions.

中文翻译：

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Eu@Zn-MOF 新型三传感通道平台用于 Cr(III) 的定量检测

摘要 采用溶剂热法和合成后修饰法 (PSM) 制备了锌金属有机骨架 (MOF) 并作为主体与 Eu3+ 离子结合（以 2,6-萘二甲酸为配体）。得到的发光材料Eu(3+)@Zn-NDC通过XRD、IR、TGA和SEM进行表征。Eu(3+)@Zn-NDC 显示 Cr3+ 的三个传感通道，存在三个良好的线性，范围从 1 × 10−3 到 7.5 × 10−5 mol/L。结果表明，Eu(3+)@Zn-NDC 对 Cr3+ 表现出选择性、灵敏和定量响应，传感范围拓宽，满足实际应用。讨论了它的传感机制。这是 Eu(3+)@ Zn-NDC 首次有望用于 Cr3+ 离子的三通道传感器。