ISI Journals

The persistent challenge of freshwater scarcity coupled with the accelerating global demand for sustainable energy solutions necessitates innovative approaches in renewable energy and water purification technologies. Solar distillation, a promising avenue for producing potable water, faces inherent limitations in efficiency due to restricted evaporation-condensation dynamics. Recent advances in material science, particularly bio-inspired hybrid wettability surfaces, offer a potential paradigm shift in enhancing solar still performance. By mimicking natural systems, such as the lotus leaf’s superhydrophobicity and the pitcher plant’s directional liquid transport, researchers have begun to design condenser and evaporator surfaces that simultaneously optimize evaporation, droplet coalescence, and directional liquid removal. This approach not only accelerates vapor condensation but also minimizes thermal resistance, thereby enhancing the overall thermal management of solar stills. The integration of hybrid wettability into solar distillation systems extends beyond water production, intersecting with broader renewable energy efficiency goals. Improved heat transfer and reduced energy losses align solar stills with thermal engineering principles, enabling scalable and economically viable solutions for decentralized water purification. Furthermore, the hybrid bio-inspired design principles provide multifunctional advantages, including fouling resistance, self-cleaning capabilities, and enhanced durability under harsh climatic conditions. Such advancements directly contribute to sustainable development goals by coupling renewable energy utilization with clean water generation. This paper critically examines the potential of bio-inspired hybrid wettability surfaces to overcome the operational inefficiencies of solar distillation. A comprehensive exploration of underlying mechanisms, comparative performance evaluations, and methodological frameworks for experimental validation are presented. The findings underscore the transformative role of biomimicry in renewable energy engineering, revealing pathways for designing next-generation solar stills capable of bridging the gap between energy efficiency and water security.