Inorganic Janus nanosheets bearing two types of covalently bound organophosphonate groups <i>via</i> regioselective surface modification of K₄Nb₆O₁₇·3H₂O

Abstract

Janus nanosheets were prepared from K4Nb6O17·3H2O by modifying surfaces of their two distinct interlayers in a regioselective and sequential manner and subsequent exfoliation. The surface properties of nanosheets were investigated by phase atomic force microscopy imaging and two types of surfaces were discriminated, indicating that Janus nanosheets were successfully prepared.