Browsing by Author "Yang D."
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Item A cellulose-based membrane with temperature regulation and water transportation for thermal management applications(Elsevier Ltd, 2023) Chen Y.; Zhang T.; Li Y.; Yurekli Y.; Qiu F.; Yang D.Thermal management materials are widely employed in the construction and textile industries due to their non-energy input and the ability to precisely adjust the temperature. However, the application of thermal management technique toward sustainable agriculture is still challenging due to the complex environment. Herein, a coupled insulation system with highly asymmetric thermal conductivity and unidirectional water penetration is developed by using the integration of thermal management and water diodes technologies. The hierarchical membrane shows asymmetric thermal conductivity of carbonized cellulose layer (CCL, 0.64 W m−1 K−1) and Al2O3/cellulose layer (ACL, 0.16 W m−1 K−1), and good moisture permeability owing to the anisotropic wettability of the material and hierarchical structure design. Thermal management performance revealed that compared with PET and cellulose membrane, the membrane temperature increased by 4.1 °C and 1.3 °C, respectively, resulting in a decrease in greenhouse heat dissipation. Besides, benefitting from the efficient photothermal conversion performance of carbonized cellulose, the outside can rapidly warm up to 42 °C under 120 W/m2 sun radiation, providing a suitable growth temperature for crops. Meanwhile, unidirectional water penetration achieved in the 60 s not only enables the membrane to maintain long-term and effective insulation, but also ensures the demand of crops for water during drought conditions. Furthermore, the anti-flaming property broadens the range of applications, reducing damage in an emergency such as a fire. The demonstrated membrane can potentially replace the commercial plastic-based greenhouse materials, and the gradient and bilayer design open a new avenue for sustainable thermal management application. © 2023 Elsevier LtdItem Bionic root inspired CNT/regenerated cellulose aerogel membrane/Cu nanowires for enhancing physiological comfort(Springer Science and Business Media B.V., 2023) Chen Y.; Zhang R.; Qiu F.; Zhang T.; Yang D.; Yurekli Y.Traditional thermal management and humidity management systems consume a large amount of energy and thus aggravate the energy crisis. Here, CNT/regenerated cellulose aerogel membrane/copper nanowires (CRCAMCNWs) with thermal and humidity management were successfully fabricated using layer-by-layer assembly. This composite takes advantage of high infrared reflectivity of the copper (Cu) nanowires and the high solar absorptivity of CNTs. Under simulated sunlight exposure, the surface temperature of CRCAMCNWs was 11.4 °C higher than the regenerated cellulose aerogel membrane, indicating that CRCAMCNWs have excellent thermal management properties. The excellent sweat transport properties of CRCAMCNWs are demonstrated by the fact that water can penetrate from the Cu side to the inside within 3.5 s. For insensible sweat, the water vapor transmission rate of CRCAMCNWs is 0.708 mg cm−2 h−1, which transfer insensible sweat from the inner side of to the outer side for enhanced wearer comfort. Moreover, CRCAMCNWs exhibit excellent antibacterial properties due to the presence of Cu nanowires. This work not only provides a recycling strategy to fabricate bionic-root inspired wearable materials by using sugarcane bagasse as raw material but also demonstrates intriguing applications in enhancing physiological comfort thanks to its low energy consumption and environmental friendliness. © 2023, The Author(s), under exclusive licence to Springer Nature B.V.Item Large-scale fabrication NZVI rod arrays on cotton fiber surfaces for efficient selenium adsorption(Springer Science and Business Media Deutschland GmbH, 2024) Zhang T.; Yu H.; Dai Y.; Yang D.; Yurekli Y.; Qiu F.Aiming to solve the worldwide challenge of selenium pollution and selenium deficiency in partial districts, a simple and effective in situ growth process combined with seed growth method was used to load nanoscale zero-valent iron (NZVI) on the surface of cotton fiber (NZVI/C) for efficient selenium adsorption. The SEM results indicated that the FeOOH rods are perpendicular to the fiber and rooted in its surface to construct the stable structure. The obtained NZVI/C composites have high chemical reactivity and exhibit efficient extraction effect on selenium and the test results are recorded by ICP. More importantly, by adjusting the temperature, time, pH, dosage, and other conditions during the adsorption process, the separation performance of the NZVI/C composites can be further enhanced. The adsorption process of NZVI/C composites was endothermic reaction, and surface adsorption dominates the whole adsorption process. Moreover, this method realizes the controllable preparation of the ordered NZVI rod arrays on the cotton fiber, which can effectively solve the agglomeration problem of NZVI, and it is expected to be promoted to various fiber materials for easy, cheap, and large-scale production. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023.Item ZnAl-LDH/wood-based antifouling membranes for high-flux and efficient oil/water separation(Elsevier B.V., 2025) Wu K.; Xu J.; Jiang Y.; Jiang Y.; Yurekli Y.; Yue X.; Dai Y.; Zhang T.; Yang D.; Qiu F.An efficient and antifouling cutting-edge membrane was fabricated via growing hierarchical ZnAl-layered double hydroxides (LDHs) nanosheets on the wood template for enhanced separation of immiscible oil/water mixtures and emulsions. The retained vertical channels within the wood substrate facilitated impressive liquid flux, while the LDHs layer coated on the wood surface establishes a robust hydration layer that effectively repels oil droplets. The synergistic effect of these two elements enables efficient separation of immiscible oil/water mixtures and emulsions. The ZnAl-LDHs/wood membrane demonstrates a remarkable reduction in oil adhesion, achieving exceptional antifouling performance. This innovative membrane was adept at efficiently separating oil/water mixtures, exhibiting an impressive flux of 1.87 × 106 L·m−2·h−1 with a separation efficiency of 99 %. Furthermore, it successfully processes surfactant-free emulsions at a rate of 8279 L·m−2·h−1 (99.4 % efficiency) and surfactant-stabilized emulsions at 6850 L·m−2·h−1 (98.8 % efficiency). The current work combines natural wooden channel structures and hydration layers formed by superhydrophilic LDHs nanosheets, providing new novel insights and support for the development of highly efficient membranes with antifouling properties for oil/water separation. © 2025 Elsevier B.V.