Mesoporous carbon-ZrO sub(2) composites prepared using thermolysis of zirconium based metal-organic frameworks and their adsorption properties

• Published in: Journal of porous materials Vol. 22; no. 2; pp. 465 - 471
• Main Authors: Liu, Shu-Cheng, Yue, Zi-Feng, Liu, Yi
• Format: Journal Article
• Language: English
• Published: 01.04.2015
• Subjects: Conversion; Diffraction; Metal-organic frameworks; Porosity; Porous materials; Precursors; Surface area; Surface chemistry; X-rays; Zirconium
• DOI: 10.1007/s10934-015-9915-y
• ISSN: 1380-2224

Mesoporous carbon-ZrO sub(2) (MCZ) composites are prepared using a simple thermal conversion of metal-organic frameworks (MOFs). By choosing a zirconium based MOFs, called UiO-66, as both the Zr and C precursor and the porous template, porous carbon-ZrO sub(2) hybrid materials are formed by carbonizing UiO-66 at 600 degree C in an inert atmosphere. The structure, morphology, and porosity of the products were studied using powder X-ray diffraction, transmission electron microscopy, thermogravimetry, and the BET surface area method. The obtained MCZ materials exhibit a relatively high specific surface area of ~136 m super(2) g super(-1), a large pore size, and pore volumes of ~9.6 nm and ~0.33 cm super(-3) g super(-1), respectively. The results also indicate that the MCZ materials have a good capacity to adsorb Congo red from an aqueous solution.