Electrospun Multifunctional Radiation Shielding Nanofibrous Membrane for Daily Human Protection

With the widespread utilization of many radiation instruments, people are inadvertently suffering from radiation damage. But nowadays, there is still a lack of a lightweight, comfortable, and efficient wearable radiation-proof multifunctional composite fibrous membranes in people's lives. To solve this problem, a green and efficient radiation-resistant nanofibrous membrane consisting of cellulose fluorescent particles (CFP), ZnO-Bi2O3 nanoparticles, and polyacrylonitrile (PAN) solution is prepared by an electrospinning technology. The microscopic characterization shows that the nanoparticles are uniformly dispersed on the surface of the nanofibrous membrane, forming a dense fibrous structure. The PAN/CFP/ZnO-Bi2O3 nanofibrous membrane exhibits not only an excellent ultraviolet(UV) interception with an ultraviolet protection factor value of 337.99 & PLUSMN; 83.67, but also a strong shielding effect on low-energy X-rays. Simultaneously, it can not only photocatalytically degrade 88.17% of methylene blue solution within 150 min, but also remove 94.16 & PLUSMN; 0.96% of Escherichia coli and 99.07 & PLUSMN; 0.59% of Staphylococcus aureus within 3 h under dark incubation and kill all bacteria within 3 h under light. The adhesion, growth, and proliferation of bone marrow mesenchymal stem cells on the PAN/CFP/ZnO-Bi2O3 nanofibrous membranes confirm its low cytotoxicity and good biosafety. Thus, it could be expected to be used in daily life products such as UV and X-rays radiation protective clothing.