Registre de correu electrònic: Sulfate Exchange of the Nitrate-Type Layered Hydroxide Nanosheets of Ln(2)(OH)(5)NO(3)·nH(2)O for Better Dispersed and Multi-color Luminescent Ln(2)O(3) Nanophosphors (Ln = Y(0.98)RE(0.02), RE = Pr, Sm, Eu, Tb, Dy, Ho, Er, and Tm)