State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, P. R. China.
Nanoscale. 2017 Dec 14;9(48):19384-19389. doi: 10.1039/c7nr06861a.
This paper presents a new steam sterilization approach that uses a solar-driven evaporation system at the water/air interface. Compared to the conventional solar autoclave, this new steam sterilization approach via interfacial evaporation requires no complex system design to bear high steam pressure. In such a system, a reduced graphene oxide/polytetrafluoroethylene composite membrane floating at the water/air interface serves as a light-to-heat conversion medium to harvest and convert incident solar light into localized heat. Such localized heat raises the temperature of the membrane substantially and helps generate steam with a temperature higher than 120 °C. A sterilization device that takes advantage of the interfacial solar-driven evaporation system was built and its successful sterilization capability was demonstrated through both chemical and biological sterilization tests. The interfacial evaporation-based solar driven sterilization approach offers a potential low cost solution to meet the need for sterilization in undeveloped areas that lack electrical power but have ample solar radiation.
本文提出了一种新的蒸汽灭菌方法，该方法在水/气界面使用太阳能驱动的蒸发系统。与传统的太阳能高压灭菌器相比，这种通过界面蒸发的新蒸汽灭菌方法不需要复杂的系统设计来承受高蒸汽压力。在这样的系统中，漂浮在水/气界面的还原氧化石墨烯/聚四氟乙烯复合膜作为光热转换介质，收集并将入射的太阳光转化为局部热量。这种局部热量会大大提高膜的温度，并有助于产生温度高于 120°C 的蒸汽。利用界面太阳能蒸发系统构建了一种灭菌装置，并通过化学和生物灭菌测试证明了其成功的灭菌能力。基于界面蒸发的太阳能驱动灭菌方法为满足缺乏电力但有充足太阳辐射的欠发达地区的灭菌需求提供了一种潜在的低成本解决方案。
