Highly sensitive colorimetric detection and effective adsorption of phosphate based on MOF-808(Zr/Ce). (26th July 2022)

• Record Type: Journal Article
• Authors: Zhai, Yuzhu; Li, Yijing; Hou, Qin; Zhang, Yuanhong; Zhou, Enlong; Li, Houshen; Ai, Shiyun
• Is Part Of: New journal of chemistry. Volume 46:Number 32(2022)
• Page Start: 15405
• Page End: 15413
• Publication Date: 2022-07-26
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d2nj00640e
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : MOF-808(Zr/Ce) has been successfully used for the sensitive and rapid detection of phosphate and phosphate removal by effective adsorption. Abstract : A phosphate ion (Pi) is usually considered as an important index of eutrophication in water and can cause great harm to the water ecological environment. In this work, MOF-808(Zr/Ce) was synthesized simply for phosphate detection and removal. MOF-808(Zr/Ce) with oxidase-like activity can oxidize 3, 3′, 5, 5′-tetramethylbenzidine (TMB). The colorimetric sensing of phosphate was performed based on the enhancement of the oxidase-like activity of MOF-808(Zr/Ce). The linear detection range for phosphate detection was 11–581 μM, and the detection limit (LOD) was 3.7 μM. The MOF-808(Zr/Ce)/CNF (cellulose nanofibers) flexible film synthesized by the filtration method also enables the rapid identification of phosphate. Besides, the phosphate adsorption performance of MOF-808(Zr/Ce) was also investigated. The adsorption capacities are 54.9, 65.1, and 68.5 mg g −1 at 298, 308, and 318 K, respectively. The results show that MOF-808(Zr/Ce) has great potential for phosphate detection and removal.