Dear Waqas,

I suppose you mean polyoxometalates (POMs). Because POMs are fully inorganic molecular oxides with exceptional environmental stability (which was verified by our  experiments) my opinion is that they could be used for encapsulation of other materials. 

POMs usually stand for polyoxometalates. There are thousands of POMs. Some of them are able to encapsulate  cations, which is described in numerous publications. 

Hi,

Have a look at this recent review paper (open access): http://www.mdpi.com/2304-6740/3/2/160

Also read M.Pope's or M.Nyman's papers for more info about polyoxometalates

Hi,

Have a look at this recent review paper (open access): http://www.mdpi.com/2304-6740/3/2/160

Also read M.Pope's or M.Nyman's papers for more info about polyoxometalates

Dear Gauthier and Yurii V Geletii, Thank you so much for your helpful response.

According to Okuhara (a Japanese chemist of 1980s and the trendsetter in POM chemistry), POMs have miniscule porosity (BET not more than a dozen or so m2.g-1), and are soluble in basic/aqueos conditions, thus they’re less effective when used in bulk. In order to access the core metal content and acheive their heterogeneous catalysis (or electrochemical, adsoprtion, etc. applications), researchers have long tried to encapsulated/supported POMs on some highly porous host materials, like zeolites, MOFs, AC, metal oxides (silica, alumina, etc.). This allows access to the active oxide edifice of POMs and in majority of cases, POM composites are stable and reusable for multiple runs.

According to Okuhara (a Japanese chemist of 1980s and the trendsetter in POM chemistry), POMs have miniscule porosity (BET not more than a dozen or so m2.g-1), and are soluble in basic/aqueos conditions, thus they’re less effective when used in bulk. In order to access the core metal content and acheive their heterogeneous catalysis (or electrochemical, adsoprtion, etc. applications), researchers have long tried to encapsulated/supported POMs on some highly porous host materials, like zeolites, MOFs, AC, metal oxides (silica, alumina, etc.). This allows access to the active oxide edifice of POMs and in majority of cases, POM composites are stable and reusable for multiple runs.

Latif Ullah There is no doubt that Toshio Okuhara was a distinguished chemist, but in 1980s he worked in prof. Makoto Misono's group. The POMs in crystal form are indeed not a porous material. Commonly, POMs are unstable at elevated pH. Some POM have enough room in their interior to accommodate counter cations. The titled question was not about an encapsulation of POM in porous materials. I would downvote your post