Sol–gel preparation of ZrC–ZrO2 composite microspheres using fructose as a carbon source

Multivariate Functionalization of UiO‐66 for Photocatalytic Water Remediation

“…Although further research is needed to fully understand this counterintuitive difference, it is important to note that the release of zirconium ions from the UiO‐66 framework could give rise to an additional absorbance of the UV–vis signal in the same wavelength range (i.e., <250 nm) that is used in this work to estimate the BDC‐NO 2 concentration. [ 72 ] This would lead to an overestimation of the release calculated for BDC‐NO 2 linkers, but does not refuse the fact that even when the stability of UiO‐66‐NO 2 is studied by UV–vis spectroscopy, a non‐negligible signal is observed at 250 nm, which confirms the partial release of nitro linkers jointly with zirconium ions into the aqueous solutions. In addition, the presence of chromium ions, and the illumination during photocatalysis, can alter as well the selective release of the linkers studied under ideal conditions in the previous sections.…”