GaOOH-modified metal-organic frameworks UiO-66-NH2: Selective and sensitive sensing four heavy-metal ions in real wastewater by electrochemical method

Rational design of a novel MOF-based ternary nanocomposite for effectively monitoring harmful organophosphates in foods and the environment

“…18 As for UiO-66-NH 2 , sharp and intensive peaks with the 2 θ appeared at 7.38° (111), 8.52° (200), and 25.7° (600), representing that UiO-66-NH 2 nanoparticles were successfully synthesized with high crystallinity. 39 The XRD patterns of the UiO-66-NH 2 /MWCNTs nanocomposite are quite similar to that of the UiO-66-NH 2 nanoparticles, verifying that the UiO-66-NH 2 nanoparticles had been successfully loaded on the MWCNTs by the applied one-pot solvothermal reaction. For the further integrated PtNPs/UiO-66-NH 2 /MWCNTs nanocomposite, there were no apparent characteristic peaks of MWCNTs, which may be due to the shielding with the peaks of UiO-66-NH 2 and PtNPs.…”

3D printing MOFs‐based fiber electrodes: A novel platform as electrochemical sensors for heavy metal ions

“…And then the limit of detection (LOD) was computed as 0.041 μM (S/N = 3), significantly below many recent reports and below the standard concentration (0.0015 ppm) and for Pb 2 + in the drinking water set by EPA. [1][2][3][23][24][25][26][27] The sensitivity of this probe exceeded most recent reported sensors and the LOD was low enough to detect Pb 2 + effectively in many chemical systems. In addition, as shown in the Figure S2, the PXRD pattern of this probe before and after Pb 2 + detection was stayed consistent, suggesting its structure stability.…”

“…Therefore, the US Environmental Protection Agency (EPA) recomend the limit of Pb 2 + allowed in the drinking water not exceeding 0.015 ppm. [1][2][3] As such, it was especially urgent and demanded for the effective recognition and determination for Pb 2 + at trace concentrations.…”

An electrochemical sensor based on a MOF/ZnO composite for the highly sensitive detection of Cu(ii) in river water samples

“…Wang et al synthesized a UiO-66-NH 2 /GaOOH composite material by a simple hydrothermal method to achieve the detection of a variety of heavy ions. 22 Chen et al prepared a multilayer biochar/UiO-66-NH 2 film by layered deposition technology, which can detect Pb( ii ) and Hg( ii ) sensitively. 23 Zou et al used the hydrothermal method to prepare UiO-66-NH 2 @MWCNT composite materials, which realized the rapid detection of cadmium ions in meat products.…”