Cellulose triacetate (CTA) is commonly used as the material for forward osmosis (FO) membranes due to its good chlorine resistance, fouling resistance and wide availability. In this work, the implications of various solvents on the appearance and desalination capacity of CTA FO membranes were systematically investigated. CTA membranes with large pore size and high porosity were constructed by using spray-modified non-solvent induced phase separation (s-NIPS). The water flux of CTA membranes fabricated by s-NIPS using DMSO as the solvent was up to 34.4 L m⁻²h⁻¹, which was 5.6 times higher than HTI commercial membranes, and the reverse salt flux was only 10.9 g m⁻²h⁻¹. A poly-dopamine (PDA) /graphene oxide (GO) -Fe³⁺-tannic acid (TA) interlayer was introduced to adjust the cross-linking degree of the polyamide (PA). And thin-film nanocomposite (TFN) membranes (PA-PDA/GO-Fe³⁺-TA-CTA) were fabricated successfully. The water flux was 35.8 L m⁻²h⁻¹ and the reverse salt flux decreased to 5.84 g m⁻²h⁻¹. These experimental results propose an emerging approach to design and develop high performance FO membranes in a rational way.

三醋酸纤维素（CTA）因其良好的耐氯性、抗污染性和广泛的可用性而被广泛用作正向渗透（FO）膜的材料。在这项工作中，系统地研究了各种溶剂对 CTA FO 膜的外观和脱盐能力的影响。采用喷雾改性非溶剂诱导相分离（s-NIPS）构建了大孔径和高孔隙率的CTA膜。以DMSO为溶剂的s-NIPS制备的CTA膜的水通量高达34.4 L m ^-2 h ^-1，是HTI商用膜的5.6倍，而反向盐通量仅为10.9 g m ^-2 h ⁻¹。引入聚多巴胺(PDA)/氧化石墨烯(GO)-Fe ^{3+ -单宁酸(TA)中间层来调节聚酰胺(PA)的交联度。}并成功制备了薄膜纳米复合（TFN）膜（PA-PDA/GO-Fe ^{3+ -TA-CTA）。}水通量为35.8 L m ^-2 h ^-1，反向盐通量降低至5.84 g m ^-2 h ^-1。这些实验结果提出了一种以合理的方式设计和开发高性能 FO 膜的新兴方法。