Influence of silica nanospheres on the separation performance of thin film composite poly(piperazine-amide) nanofiltration membranes

- Poly(piperazine-amide)/silica nanocomposite NF membrane was firstly fabricated.
- The addition of silica nanospheres can optimize NF-membrane separation performance.
- The silica nanosphere introduced NF membrane exhibits good separation selectivity.
- The silica nanosphere introduced NF membrane has superior performance stability.