“…If Li2Si2O5 with its hierarchical nanostructures (such as nanorods or nano-brushes) can be directly synthesized onto a substrate, the adsorption sites on its surface can be fully exposed and the surface energy is increased, thus promoting the efficient adsorption of heavy metal ions. At the same time, the introduction of substrate materials can also solve the problem that those powder adsorbed materials are difficult to be separated after adsorption [26,27]. As another cheap and light source, carbon cloth has a unique porous structure, with its mechanical softness and strength as well as good chemical stability, all of which are suitable for being used as the supporting substrate for growth of micro-and nanostructures [28,29].…”