has developed a type of sponge made of graphene oxide and chitosan, that can be used to extract gold from electronic waste.

An experimental sponge, described in the Proceedings of the National Academy of Sciences USA, combines graphene oxide (a thin sheet of carbon and oxygen molecules) with chitosan, a sugar derived ...

The version that Adlhart and his colleagues developed, for instance, uses chitosan—a sugar derived from the shells of crustaceans—to provide the sponge’s structure. Chitosan isn’t widely ...

Gold trapper: Scanning electron microscope image of Au 3+ extraction and reduction by graphene oxide/chitosan sponge; Au 3+ is shown in yellow. (Courtesy: Kou Yang) A new type of composite material is ...

The version that Adlhart and his colleagues developed, for instance, uses chitosan—a sugar derived from the shells of crustaceans—to provide the sponge’s structure. Chitosan isn’t widely ...

The version that Adlhart and his colleagues developed, for instance, uses chitosan—a sugar derived from the shells of crustaceans—to provide the sponge’s structure. Chitosan isn’t widely ...

The researchers created a spherical, sponge-like matrix out of chitosan, a material found in shrimp and crab shells. Scattered throughout this matrix are smaller nanocapsules made of a porous ...

The researchers created a spherical, sponge-like matrix out of chitosan, a material found in shrimp and crab shells. Scattered throughout this matrix are smaller nanocapsules made of a porous ...