“…Therefore, the different inner and outer-compositions of these materials allow to accomplish different chemical reactions on either surface (Massaro et al, 2014a,b;Li et al, 2008;Du et al, 2010;Wang et al, 2008;Vergaro et al, 2010;Lvov et al, 2002;Matsuno et al, 2003Matsuno et al, , 2006Ma et al, 2011Ma et al, , 2012Terayama et al, 2010;Horiuchi et al, 2009).…”