A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Graphene Oxide Membranes for Tunable Ion Sieving in Acidic Radioactive Waste
Graphene oxide (GO) membranes with unique nanolayer structure have demonstrated excellent separation capability based on their size‐selective effect, but there are few reports on achieving ion–ion separation, because it is difficult to inhibit the swelling effect of GO nano sheets as well as to precisely control the interlayer spacing d to a specific value between the sizes of different metal ions. Here, selective separation of uranium from acidic radioactive waste containing multication is achieved through a precise dual‐adjustment strategy on d. It is found that GO swelling is greatly restricted in highly acidic solution due to protonation effect. Then the interlayer spacing is further precisely reduced to below the diameter of uranyl ion by increasing the oxidation degree of GO. Sieving uranyl ions from other nuclide ions is successfully realized in pH =3–3 mol L−1 nitric acid solutions.
Graphene Oxide Membranes for Tunable Ion Sieving in Acidic Radioactive Waste
Graphene oxide (GO) membranes with unique nanolayer structure have demonstrated excellent separation capability based on their size‐selective effect, but there are few reports on achieving ion–ion separation, because it is difficult to inhibit the swelling effect of GO nano sheets as well as to precisely control the interlayer spacing d to a specific value between the sizes of different metal ions. Here, selective separation of uranium from acidic radioactive waste containing multication is achieved through a precise dual‐adjustment strategy on d. It is found that GO swelling is greatly restricted in highly acidic solution due to protonation effect. Then the interlayer spacing is further precisely reduced to below the diameter of uranyl ion by increasing the oxidation degree of GO. Sieving uranyl ions from other nuclide ions is successfully realized in pH =3–3 mol L−1 nitric acid solutions.
Graphene Oxide Membranes for Tunable Ion Sieving in Acidic Radioactive Waste
Wu, Tong (author) / Wang, Zhe (author) / Lu, Yuexiang (author) / Liu, Shuang (author) / Li, Hongpeng (author) / Ye, Gang (author) / Chen, Jing (author)
Advanced Science ; 8
2021-04-01
8 pages
Article (Journal)
Electronic Resource
English
Molecular Sieving and Sensing with Gold Nanotube Membranes
| British Library Online Contents | 2002
Amorphous Silica Molecular Sieving Membranes by Sol-Gel Processing
| British Library Online Contents | 1996