The present disclosure relates to a composition that includes a metal-sequestering material and a support material, where the composition is substantially transparent to light having a wavelength greater than or equal to 350 nm, the composition is in the form of a layer having a thickness between 0.1 μm and 1 mm, the metal-sequestering material is capable of absorbing a metal that includes at least one of a post-transition metal, a metalloid, an alkali metal, and/or an alkaline earth metal, and the metal-sequestering material has an absorption capacity for the metal between about 1E−2 g metal/cm2 and about 1E−7 g metal/cm2.