This volume contains a collection of 14 papers submitted from the below five symposia held during the 11th International Symposium on Ceramic Materials and Components for Energy and Environmental Applications (CMCEE-11), June 14-19, 2015 in Vancouver, BC, Canada:

• Photocatalysts for Energy and Environmental Applications
• Advanced Functional Materials, Devices, and Systems for the Environment
• Geopolymers, Inorganic Polymer Ceramics and Sustainable Composites
• Macroporous Ceramics For Environmental and Energy Applications
• Advanced Sensors for Energy, Environment, and Health Applications