“…Compared with other drug carriers, layered double hydroxides (LDHs), which possess anion-exchange ability, more stable structure, good biocompatibility, controllable particle size and high drug loading [1,2], can be used to encapsulate organic anions such as medicine [3][4][5][6], amino acid [7], vitamins [8,9], pesticides [10] and DNA [11][12][13] to form molecular reservoirs [14,15] in slow and controlled drug release systems [16][17][18]. Controlled release systems with high performance and responsiveness to different factors such as pH, temperature, and magnetic field have been fabricated with LDHs itself as well as composites comprising mesoporous silica nanoparticles [18], graphene oxide, [19] and magnetic components [20].…”