Process for the thickness growth of colloidal nanosheets and materials composed of said nanosheets

An inorganic colloidal nanoparticle comprising an initial inorganic nanosheet partially or totally covered with at least one monolayer of inorganic material, wherein the initial inorganic nanosheet is an inorganic colloidal nanosheet, wherein the inorganic colloidal nanoparticle has a thickness of 0.5 nm to 10 mm, wherein the initial inorganic nanosheet comprises a material MxEy, wherein:

• M is Zn, Cd, Hg, Cu, Ag, Au, Ni, Pd, Pt, Co, Fe, Ru, Os, Mn, Tc, Re, Cr, Mo, W, V, Nd, Ta, Ti, Zr, Hf, Be, Mg, Ca, Sr, Ba, Al, Ga, In, Tl, Si, Ge, Sn, Pb, As, Sb, Bi, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or a mixture thereof, E is O, S, Se, Te, N, P, As, F, Cl, Br, I, or a mixture thereof, and x and y are independently a decimal number from 0 to 5, and wherein the initial inorganic nanosheet is partially or totally covered by a monolayer of a material M or E wherein:
• M is Zn, Cd, Hg, Cu, Ag, Au, Ni, Pd, Pt, Co, Fe, Ru, Os, Mn, Tc, Re, Cr, Mo, W, V, Nd, Ta, Ti, Zr, Hf, Be, Mg, Ca, Sr, Ba, Al, Ga, In, Tl, Si, Ge, Sn, Pb, As, Sb, Bi, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or a mixture thereof, and E is O, S, Se, Te, N, P, As, F, Cl, Br, I, or a mixture thereof.