Fig. 2

(a–f) Scanning micrographs and elemental analysis of EDX for Ln-MOF@Cotton; (a) Cotton, (b) Eu-MOF@Cotton, (c) Tb-MOF@Cotton, (d) Q-Cotton, (e) Eu-MOF@Q-Cotton and (f) Tb-MOF@Q-Cotton. (g-j) Mapping of elemental analysis of EDX for Ln-MOF@Cotton; (g) Eu-MOF@Cotton, (h) Tb-MOF@Cotton, (i) Eu-MOF@Q-Cotton and (j) Tb-MOF@Q-Cotton.