Enhanced chemical sensing for Cu²⁺ based on composites of ZIF-8 with small molecules

Abstract

An enhanced chemical sensor was designed by introducing small molecules into ZIF-8 for the specific recognition of Cu2+.

Cobalt-Doped ZIF-8 Nanoparticle-Decorated Fiber Optic Sensor for Copper Ion Detection

“…For example, we have recently demonstrated a portable zeolitic imidazolate framework-67 (ZIF-67) coated fiber optic absorption sensor for hexavalent chromium detection with high sensitivity and selectivity. 24 Some MOFs, including Zr−tetraphenylporphyrin tetrasulfonic acid hydrate−MOF (ZTM) 25 and zeolitic imidazolate framework-8 (ZIF-8) in conjunction with fluorescent nanomaterials such as CDs and AuNCs, 26,27 have been explored for selective detection of Cu(II) ion based on fluorescence quenching in solution-phase. In particular, pristine ZIF-8 and its doped variants have gained wide interest due to their facile synthesis routes and their stability.…”

“…Some MOFs, including Zr–tetraphenylporphyrin tetrasulfonic acid hydrate–MOF (ZTM) and zeolitic imidazolate framework-8 (ZIF-8) in conjunction with fluorescent nanomaterials such as CDs and AuNCs, , have been explored for selective detection of Cu(II) ion based on fluorescence quenching in solution-phase. In particular, pristine ZIF-8 and its doped variants have gained wide interest due to their facile synthesis routes and their stability .…”

Engineering of metal–organic framework nanomaterials on long-period fiber grating for acetone vapor sensing

“…7 ZIF-8 based uorescent sensors, microbalance sensors, electrochemical sensors, and optical ber/waveguide sensors have been developed for highly sensitive and rapid detection of various toxic and hazardous vapors, such as formaldehyde, explosives, aromatic hydrocarbons, etc. [8][9][10][11][12][13][14][15][16][17][18][19] Compared with traditional sensors, optical ber sensors (OFSs), which employ optical bers to achieve sensing with light, can offer a number of unique advantages, such as absolute electrical insulation, immunity to electromagnetic interference, non-invasiveness, corrosion resistance, and high sensitivity. OFSs also allow long-distance monitoring and interrogation of sensors.…”

“…7 ZIF-8 based fluorescent sensors, microbalance sensors, electrochemical sensors, and optical fiber/waveguide sensors have been developed for highly sensitive and rapid detection of various toxic and hazardous vapors, such as formaldehyde, explosives, aromatic hydrocarbons, etc. 8–19…”