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Responsive Janus Cage Reactor
Author(s) -
Si Yan,
Ji Xuyang,
Liang Fuxin,
Jiang Bingyin,
Yang Zhenzhong
Publication year - 2019
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201900173
Subject(s) - janus , lower critical solution temperature , catalysis , ionic liquid , chemical engineering , chemistry , janus particles , cage , thermal stability , materials science , grafting , nanotechnology , polymer , organic chemistry , mathematics , combinatorics , engineering , copolymer
A Janus silica cage was synthesized by selectively grafting an ionic liquid (IL) and poly‐ N ‐isopropylacrylamide (PNIPAM) (lower critical solution temperature (LCST)≈32 °C) onto the exterior and interior sides of the mesoporous SiO 2 shell. The paramagnetic core inside the cavity is responsible for magnetic collection. The PW 12 O 40 3− anion is further conjugated onto the IL side by anion exchange. The Janus cage acts as a thermal‐responsive reactor for catalytic oxidization of dibenzothiophene (DBT) in the presence of H 2 O 2 . The sulfide in the model oil can be completely decomposed at 25 °C, whilst the oxidative products are more dissoluble in water and preferentially captured inside the Janus cage. The Janus cage reactor could be regenerated at high temperature above 32 °C after releasing the products.