This special collection provided an outlet for researchers to present the newest advances, scientific findings and technological developments in the field of eco-materials processing and design. The object to survey the current state-of-the-art and to foresee future trends in the field of eco-materials processing and design for energy, environment and related materials. Many fruitful and exciting research achievements were presented, both as fundamental topics and as applications such as solar sustainable energy, fuel-cells, photochemistry, porous materials, biomass, and bio-inspired technologies for improving microstructures and bulk properties. Volume is indexed by Thomson Reuters CPCI-S (WoS).