Fabrication And Properties Of Flexible One-dimensional Nanomaterials Endoweds With Photoluminescence-Electricity-Magnetism-Photocatalysis Quadrifunctionality

Multifunctional nano/microcomposites have received more and more attention in the fields of nanomaterials,nanodevices and other pioneering sciences owing to their functional diversity and structural versatility.Therefore,it is a meaningful subject of study to fabricate novel nano/microcomposites and to investigate their properties.In this dissertation,we report the fabrication of [Bi₂WO₆:Yb³⁺,Er³⁺/PAN]@[PANI/Fe₃O₄/PAN] coaxial nanofibers,[Bi₂WO₆:Yb³⁺,Er³⁺/PAN]/[PANI/Fe₃O₄/PAN] bilayer composite nanofibrous membrane,[Bi₂WO₆:Yb³⁺,Er³⁺/PAN]/[Fe₃O₄/PAN] bilayer composite nanofibrous membrane and [Bi₂WO₆:Yb³⁺,Er³⁺/PAN]/[PANI/PAN] bilayer composite nanofibrous membrane via electrospinning method.The products integrate UC luminescent,electrical,magnetic and photocatalytic quadrifunctional properties into a single nanocomposites.Excellent and tunable UC luminescence,photocatalysis,electrical conduction,and magnetism can be obtained via respectively modulating the amounts of Bi₂WO₆:Yb³⁺,Er³⁺ nanofibers,PANI and Fe₃O₄ NPs.To highlight the advantage of samples,we also prepared the counterpart samples with the same components as the contrast sample.It is found that the UC luminescent,electrical and photocatalytic performance of samples are better than the counterpart.The novel nano/microcomposites have promising applications in many areas,such as electromagnetic interference shielding,magnetic resonance imaging and environmental remediation.