This presentation will report our results using nano-structured porous zincosilicates to capture lead and mercury from aqueous systems. Zincosilicates have similar framework structures to aluminosilicate zeolites, however they typically have a higher ion density due to the need for two counter cations per zinc in the framework as opposed to the one-to-one ratio of counter cation per aluminum of traditional zeolites. Molecular sieves containing zinc in the framework also have the ability to form three-membered rings (3MR) which lead to large void spaces in their structure. Interestingly, microporous zincosilicates do not have "cages" in their structure, which leads to all the cations being accessible. These features lead to high capture capacities especially for divalent heavy metals ions such as lead and mercury. Our results have shown that zincosilicates have capture capacities greater than traditional zeolites, even greater than those that have been synthesized with functional groups intended to increase metal sorption capacities. We will report the loading capacities, characterization of ions after exchange, and exchange kinetics in aqueous systems for a series of zincosilicates, such as VPI-7, VPI-9, VPI-10, and CIT-6.