fig1
Figure 1. XRD patterns of (A) LDH, LDO; (B) before and after adsorption of LDH on TCH and OFX; (C) LDH, before and after adsorption of LDO on TCH and OFX; (D) LDH, LDO, before and after adsorption of LDO on TCH at the fourth and fifth times. LDH: Layered double hydroxide; LDO: layered double hydroxide; OFX: ofloxacin; TCH: tetracycline hydrochloride.