Fig. 12

a Surface functionalization of MoS₂ sheets with thiol compounds [107]. Adapted with permission from ref [107]. Copyright 2013 for American Chemical Society. b Exfoliation and hydroxyl functionalization process of h-BN sheets by sonication-assisted hydrolysis [114]. Adapted with permission from ref [114] Copyright 2011 for American Chemical Society. c Exfoliation and amine functionalization of h-BN sheets by urea-assisted ball milling [121]. Adapted with permission from ref [121]. Copyright 2015 for Nature Publishing Group. d Exfoliation process of Ti₃C₂T_x sheets by chemical etching of MAX phases by using a fluoride-containing agents [126]. Adapted with permission from ref [126]. Copyright 2011 for John Wiley and Sons. e Functionalization of Ti₃C₂T_x sheets with phenylsulfonic groups by diazotization [130]. Adapted with permission from ref [130]. Copyright 2018 for Elsevier