Hybrid luminescent alginate hydrogels containing lanthanide with potential for acetone sensing

Photoluminescent alginate hydrogels containing covalently linked YVO4–Eu3+ have been prepared by using a facile method. The environmentally friendly preparation procedure was carried out at room temperature using water as a solvent. The photoluminescent hydrogels showed outstanding acetone sensing properties with quick response, high sensitivity, short recovery time and good reversibility.