조진수 Wang, Da som Jeongeun Mo Choi, Jihyeok Kim, Hee Jun 정진호 장호원 SONG, KYUNG GUEN Choi, Won Jun 2024-05-22T06:30:07Z 2024-05-22T06:30:07Z 2024-05-22 2024-06 0376-7388 https://pubs.kist.re.kr/handle/201004/149863 Deposition of metal-dielectric hybrid composite on the polymer based membrane is important for the electrochemical, photochemical and photothermal reactions on the membrane surface. The hydrophilic reactants such as catalysts and photothermal materials are not easy to be deposited directly on the hydrophobic membrane surface, so in most cases, binder material has been adapted to stably combine them. In this study, commercial PTFE membrane and Ti/MgF2 photothermal layers were combined without any binder. Ar plasma pretreatment was applied to a membrane surface before depositing optimized Ti/MgF2 stacks to fabricate a mechanically robust photothermal membrane. The successful fabrication of Ar plasma pretreated Ti/MgF2 photothermal membrane was demonstrated by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), atomic force microscope (AFM) characterization. Through Ar plasma pretreatment, an increase in Ti/MgF2 photothermal membrane heating temperature of 40.5 % was achieved under 1 sun condition compared with unpretreated membrane. This membrane showed improved performance and reduced energy loss in solar desalination. Utilizing these membranes in a membrane distillation system, water flux increased by up to 26.9 %, performance ratio (PR) increased by 18.9 % and thermal efficiency improved by 21.9 %. After 24-h stress test, the Ar plasma pretreated Ti/MgF2 photothermal membranes demonstrated durability and maintained thermal efficiency. English Elsevier BV Direct deposition of Ti/MgF2 photoabsorber on PTFE membrane with enhanced robustness via plasma pretreatment for photothermal membrane distillation Article 10.1016/j.memsci.2024.122896 1 Journal of Membrane Science, v.705 Journal of Membrane Science 705 N scie scopus 001265036600001 Engineering, Chemical Polymer Science Engineering Polymer Science Article WATER ADHESION DRIVEN NANOFIBER MEMBRANES Photothermal membrane Photothermal effect Plasma pretreatment Ti/MgF 2 solar absorber Photothermal membrane distillation