The use of solar energy to produce steam is an effective method to purify sewage or seawater. Herein, we deposited TiN nanoparticles(NPs) on a piece of carbonized wood as a new type of double layer material for solar ...The use of solar energy to produce steam is an effective method to purify sewage or seawater. Herein, we deposited TiN nanoparticles(NPs) on a piece of carbonized wood as a new type of double layer material for solar water evaporation. TiN NPs possess better stability, lower cost,lower toxicity and wider and stronger optical absorption than the previously reported photo-thermal conversion(PTC)materials, such as plasmonic metals, carbon-based materials and semiconductor nanomaterials. The amounts of TiN NPs and the thicknesses and types of the substrates have important influences on water evaporation rates and solar-vapor conversion efficiency. A solar-vapor conversion efficiency of 92.5%, the highest efficiency in the reported wood-based PTC materials, is obtained under 1-sun simulated solar irradiation.In addition, the TBCF hybrid materials(TiN NPs on biocarbon foam) exhibit good reusability.展开更多
以泡沫铝芯三明治板为研究对象,采用混响室隔声测试研究铺设阻尼层对其隔声量的影响。基于统计能量法理论,用VA One软件对其进行隔声量仿真分析及建模验证。基于验证模型,进一步分析了阻尼材料厚度及材料密度对复合板隔声量的影响。试...以泡沫铝芯三明治板为研究对象,采用混响室隔声测试研究铺设阻尼层对其隔声量的影响。基于统计能量法理论,用VA One软件对其进行隔声量仿真分析及建模验证。基于验证模型,进一步分析了阻尼材料厚度及材料密度对复合板隔声量的影响。试验结果表明,铺设6 mm阻尼对泡沫铝芯三明治板整体隔声性能提高,尤其是高频区域隔声量有显著提升,高达10 d B。VA One统计能量法仿真预测结果表明,对铺设阻尼的泡沫铝芯三明治板进行隔声量趋势预测计算是可行有效的,且参数调研结果表明,阻尼层厚度对三明治板隔声量有一定程度影响,阻尼厚度每增加1 mm高频区域隔声量提高约2 d B;阻尼材料密度对复合板隔声量影响不大。相关结果为泡沫铝芯三明治板隔声优化提供参考。展开更多
文摘The use of solar energy to produce steam is an effective method to purify sewage or seawater. Herein, we deposited TiN nanoparticles(NPs) on a piece of carbonized wood as a new type of double layer material for solar water evaporation. TiN NPs possess better stability, lower cost,lower toxicity and wider and stronger optical absorption than the previously reported photo-thermal conversion(PTC)materials, such as plasmonic metals, carbon-based materials and semiconductor nanomaterials. The amounts of TiN NPs and the thicknesses and types of the substrates have important influences on water evaporation rates and solar-vapor conversion efficiency. A solar-vapor conversion efficiency of 92.5%, the highest efficiency in the reported wood-based PTC materials, is obtained under 1-sun simulated solar irradiation.In addition, the TBCF hybrid materials(TiN NPs on biocarbon foam) exhibit good reusability.
基金supported by the National Natural Science Foundation of China(U20A20250,52172206,and 22179034)the Development Plan of the Youth Innovation Team in Colleges and Universities of Shandong Province。
文摘以泡沫铝芯三明治板为研究对象,采用混响室隔声测试研究铺设阻尼层对其隔声量的影响。基于统计能量法理论,用VA One软件对其进行隔声量仿真分析及建模验证。基于验证模型,进一步分析了阻尼材料厚度及材料密度对复合板隔声量的影响。试验结果表明,铺设6 mm阻尼对泡沫铝芯三明治板整体隔声性能提高,尤其是高频区域隔声量有显著提升,高达10 d B。VA One统计能量法仿真预测结果表明,对铺设阻尼的泡沫铝芯三明治板进行隔声量趋势预测计算是可行有效的,且参数调研结果表明,阻尼层厚度对三明治板隔声量有一定程度影响,阻尼厚度每增加1 mm高频区域隔声量提高约2 d B;阻尼材料密度对复合板隔声量影响不大。相关结果为泡沫铝芯三明治板隔声优化提供参考。
