Enhanced arsenic removal from water by hierarchically porous CeO2-ZrO2 nanospheres: Role of surface- and structure-dependent properties

- The CeO2-ZrO2 hollow nanospheres had strong affinity and selectivity to arsenic.
- The adsorbent showed excellent ability to remove arsenic at low concentrations.
- The adsorption mechanism was investigated by FTIR and XPS.
- The adsorbent showed potential application for drinking water treatment.