Titanium nitride (TiN) nanoparticles (NPs) act as excellent solar-heat nano-generators due to their broadband plasmonic resonances together with their chemical stability. So far, TiN NPs have been studied without loaded onto any host or support materials for solar water distillation system, which make them difficult to re-use in practical applications [1]. To overcome this drawback, our previous studies have demonstrated a floating composite structure composed of TiN NPs and transparent ceramic fibers with improved solar steam generation efficiency upto 80% [2]. In the current project with the motive to further enhance the solar steam generation efficiency, we develop cost-effective, reusable and efficient composite ceramic structures using porous alumina. © 2018 OSA - The Optical Society. All rights reserved.