Formation of new crystalline qtz-[Zn(mIm)2] polymorph from amorphous ZIF-8†
Michael F.
Thorne, 
‡a
Celia
Castillo-Blas,
‡a
Lauren N.
McHugh,
a
Alice M.
Bumstead,
a
Adam F.
Sapnik,
a
Chloe S.
Coates,
b
Farheen N.
Sayed,
b
Clare P.
Grey,
b
David A.
Keen,
c
Ivan
da Silva,
c
Krunoslav
Užarević
e
and
Thomas D.
Bennett
*a
‡a
Celia
Castillo-Blas,
‡a
Lauren N.
McHugh,
a
Alice M.
Bumstead,
a
Adam F.
Sapnik,
a
Chloe S.
Coates,
b
Farheen N.
Sayed,
b
Clare P.
Grey,
b
David A.
Keen,
c
Ivan
da Silva,
c
Krunoslav
Užarević
e
and
Thomas D.
Bennett
*a
Abstract
The structure of a new ZIF-8 polymorph with quartz topology (qtz) is reported. This qtz-[Zn(mIm)2] phase was obtained by mechanically amorphising crystalline ZIF-8, before heating the resultant amorphous phase to between 282 and 316 °C. The high-temperature phase structure was obtained from powder X-ray diffraction, and its thermal behaviour, CO2 gas sorption properties and dye adsorption ability were investigated.
![Graphical abstract: Formation of new crystalline qtz-[Zn(mIm)2] polymorph from amorphous ZIF-8](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=D2CC04241J&imageInfo.ImageIdentifier.Year=2022)
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