Application of the twelve principles of green chemistry can deliver higher efficiency and reduce the environmental burden during chemical synthesis. As a result of recent advances in genomics, proteomics and pathway engineering, biocatalysis is emerging as one of the greenest technologies. Enzymes are highly efficient with excellent regioselectivity and stereoselectivity. By conducting reactions in water under ambient reaction conditions, both the use of organic solvents and energy input are minimized.
Superhydrophobic,
flexible, and ultrahigh-performance electromagnetic
interference (EMI) shielding papers are of paramount importance to
safety and long-term service under external mechanical deformations
or other harsh service environments because they fulfill the growing
demand for multipurpose materials. Herein, we fabricated multifunctional
papers by incorporating sputter-deposited nickel nanoparticles (NiNPs)
and a fluorine-containing coating onto cellulose filter papers coated
with silver nanowires (AgNWs). AgNW networks with sputter-deposited
NiNPs provide outstanding magnetic properties, electrical conductivity,
and EMI shielding performance. At an AgNW content of 0.109 vol % and
a NiNP content of 0.013 mg/cm2, the resultant papers exhibit
a superior EMI shielding effectiveness (SE) of 88.4 dB. Additionally,
the fluorine-containing coating endows the resultant papers with a
high contact angle of 149.7°. Remarkably, the obtained papers
still maintain a high EMI SE even after 1500 bending cycles or immersion
in water, salt, or strong alkaline solutions for 2 h, indicating their
outstanding mechanical robustness and chemical durability. This work
opens a new window for designing and implementing ultrahigh-performance
EMI shielding materials.
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