Nanoparticle@Metal-Organic Frameworks as a Template for Hierarchical Porous Carbon Sponges.
Chemistry
; 24(51): 13450-13456, 2018 Sep 12.
Article
em En
| MEDLINE
| ID: mdl-29944177
ABSTRACT
The preparation of hierarchical porous carbon sponges (HCS) from metal oxide nanoparticle@metal-organic frameworks is reported. ZnO nanoparticles are partially converted to zeolitic imidazolate framework-8 (ZIF-8) crystals in presence of n-butylamine to obtain ZnO@ZIF-8 porous hybrids. After direct carbonization, followed by ZnO acidic etching, ZnO@ZIF-8 crystals were converted to submicrometric HCS. Due to the high surface area and accessible porosity, combining micro- and mesoporosity of HCS, their application for the extraction of water pollutants was studied by preparing HCS/polymer membranes, and showed a high efficiency for the fast (650â
L m-2 h-1 ) removal of plastic degradation by-products (DBP, dibutyl phthalate. DEHP, bis(2-n-ethylhexyl)phthalate). DBP and DEHP breakthroughs were lower than 3 % after the filtration of 100â
mL of water containing simultaneously both phthalates at a high concentration level (300â
µg L-1 , each). HCS/polymer membranes were reusable up to 5â
times, maintaining their extraction capacity, with relative errors of 6 % for DBP, and <1 % for DEHP.
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01-internacional
Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article