Metallic thin-film composite membranes are produced by sputtering metal films onto commercial polymer membranes. The separations capability of the membrane substrate is enhanced with the addition of a 10 nm Ta film. The addition of a tantalum layer decreases the molecular weight cutoff of the membrane from 70 kDa dextran (19 nm) to below 5 kDa (6 nm). Water flux drops from 168 LMH/bar (LMH: liters/meters2/hour) (polymer support) to 8.8 LMH/bar (Ta composite). A nanoporous layer is also added to the surface through Mg/Pd film deposition and dealloying. The resulting nanoporous Pd is a promising catalyst with a ligament size of 4.1 ± 0.9 nm. The composite membrane's ability to treat water contaminated with chlorinated organic compounds (COCs) is determined. When pressurized with hydrogen gas, the nanoporous Pd composite removes over 70% of PCB-1, a model COC, with one pass. These nanostructured films can be incorporated onto membrane supports enabling diverse reactions and separations.

金属薄膜复合膜是通过将金属薄膜溅射到商业聚合物膜上而生产的。通过添加 10 nm Ta 薄膜，增强了膜基底的分离能力。添加钽层可将膜的截留分子量从 70 kDa 葡聚糖 (19 nm) 降低至 5 kDa (6 nm) 以下。水通量从 168 LMH/bar（LMH：升/米2 /小时）（聚合物支撑）下降至 8.8 LMH/bar（Ta 复合材料）。还通过 Mg/Pd 薄膜沉积和脱合金在表面添加纳米多孔层。由此产生的纳米多孔 Pd 是一种很有前途的催化剂，其韧带尺寸为 4.1 ± 0.9 nm。确定了复合膜处理受氯化有机化合物 (COC) 污染的水的能力。当用氢气加压时，纳米多孔钯复合材料一次即可去除超过 70% 的 PCB-1（一种 COC 模型）。这些纳米结构薄膜可以合并到膜支架上，从而实现多种反应和分离。