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MB‐UiO‐66‐NH 2 Metal‐Organic Framework as Chromogenic and Fluorogenic Sensor for Hydrazine Hydrate in Aqueous Solution
Author(s) -
Helal Aasif,
Qamaruddin Muhammad,
Aziz Muhammad A.,
Shaikh Muhammad N.,
Yamani Zain H.
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201701230
Subject(s) - hydrate , aqueous solution , hydrazine (antidepressant) , methylene blue , inorganic chemistry , nuclear chemistry , chemistry , physisorption , x ray photoelectron spectroscopy , materials science , photocatalysis , chemical engineering , organic chemistry , catalysis , chromatography , engineering
Zirconium(IV)‐based MOFs UiO‐66‐NH 2 and UiO‐66‐NH 2 encapsulated with methylene blue (MB) MB‐UiO‐66‐NH 2 were successfully prepared using a facile solvothermal method and were characterized by X‐ray diffraction (XRD), transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), nitrogen physisorption analysis (BET), and X‐ray and photoelectron spectroscopy(XPS). Both the materials were 60–80 nm size and had large surface areas. MB‐UiO‐66‐NH 2 appears to be a potential candidate for the sensing of hydrazine hydrate. Selective changes in both the chromogenic and fluorogenic characteristics of MB‐UiO‐66‐NH 2 were observed upon treatment with hydrazine hydrate in an aqueous solution. The change in the photophysical properties of the MB‐UiO‐66‐NH 2 was attributed to the selective conversion of methylene‐blue‐encapsulated UiO‐66‐NH 2 to leucomethylene blue (LB) after the addition of hydrazine hydrate to the aqueous solution. The hydrazine hydrate detection limit for MB‐UiO‐66‐NH 2 was found to be 0.012 ppm in the aqueous solution.