Advances in metal–organic frameworks for water remediation applications

Lal, Seema; Singh, Parul; Singhal, Anchal; Kumar, Sanjay; Singh Gahlot, Ajay Pratap; Gandhi, Namita; Kumari, Pratibha

doi:10.1039/d3ra07982a

Cited by 11 publications

(1 citation statement)

References 259 publications

(311 reference statements)

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“…Metal–Organic Frameworks (MOFs) are recognized as periodic network−structured organic–inorganic hybrid materials, assembled through coordination bonds between organic ligands and metal ions/clusters [ 12 ]. MOFs show high specific surface areas, rich porosity, excellent redox activity, and customizable structure and functionality [ 13 , 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Construction of Metal–Organic Framework as a Novel Platform for Ratiometric Determination of Cyanide

Sun,

Wu,

Zong

et al. 2024

Biosensors

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Metal–organic frameworks (MOFs) are frequently utilized as sensing materials. Unfortunately, the low conductivity of MOFs hinder their further application in electrochemical determination. To overcome this limitation, a novel modification strategy for MOFs was proposed, establishing an electrochemical determination method for cyanides in Baijiu. Co and Ni were synergistically used as the metal active centers, with meso−Tetra(4−carboxyphenyl)porphine (TCPP) and Ferrocenecarboxylic acid (Fc−COOH) serving as the main ligands, synthesizing Ni/Co−MOF−TCPP−Fc through a hydrothermal method. The prepared MOF exhibited improved conductivity and stable ratio signals, enabling rapid and sensitive determination of cyanides. The screen−printed carbon electrodes (SPCE) were suitable for in situ and real−time determination of cyanide by electrochemical sensors due to their portability, low cost, and ease of mass production. A logarithmic linear response in the range of 0.196~44 ng/mL was demonstrated by this method, and the limit of detection (LOD) was 0.052 ng/mL. Compared with other methods, the sensor was constructed by a one−step synthesis method, which greatly simplifies the analysis process, and the determination time required was only 4 min. During natural cyanide determinations, recommended readouts match well with GC−MS with less than 5.9% relative error. Moreover, this electrochemical sensor presented a promising method for assessing the safety of cyanides in Baijiu.

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