Branched polyaniline/molybdenum oxide organic/inorganic heteronanostructures: synthesis and electromagnetic absorption properties

Abstract

In this work, we developed an efficient and facile method to fabricate branched polyaniline (PANI)/a-MoO 3 organic/inorganic heteronanostructures. Scanning electron and transmission electron microscope measurements showed that PANI nanorods with an average diameter and length of about 55 and 110 nm respectively were grown perpendicularly on the surfaces of a-MoO 3 nanorods and the density of the PANI nanorods could be readily controlled by simply changing the addition amount of aniline in the reaction system. The minimal reflection loss for the electromagnetic wave absorbent material was up to À33.7 dB at 16.88 GHz for the branched heteronanostructures/paraffin composites with a thickness of 2.0 mm, and all of the minimal reflection losses were less than those of the pure PANI nanorods in the frequency range of 2-18 GHz. More importantly, the content of the branched nanostructures in the paraffin matrix was only 10 wt%. Thus, the method presented here is a very efficient strategy to fabricate lightweight materials for strong electromagnetic wave absorbents.

A highly active, stable and synergistic Pt nanoparticles/Mo2C nanotube catalyst for methanol electro-oxidation

“…A detailed description of this process is provided in our previous work. 30 . In a typical synthesis, 0.15 g of α-MoO 3 nanorods was dispersed in 100 ml of 1 M HCl solution by sonication treatment and then cooled to -5°C while stirring.…”

MoS2 nanosheet/Mo2C-embedded N-doped carbon nanotubes: synthesis and electrocatalytic hydrogen evolution performance

“…† PANI has been demonstrated to be able to grow readily on the surfaces of various inorganic materials in various forms, such as nanorods, nanoparticles, and thin lms, if the polymerization conditions are controlled properly. 8,9 In the present work, by tuning the polymerization temperature and the concentration of aniline, PANI thin lms were uniformly coated on the MoO 3 nanowires. The as-synthesized products were examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM).…”

Facile solvothermal synthesis of novel hetero-structured CoNi–CuO composites with excellent microwave absorption performance

“…Besides, the well dispersion of CuO in the CoNi alloy could introduce more additional interfaces and consequently interfacial polarization, leading to the increase of the interfacial polarization and dielectric loss. 49 Except the above reasons, CuO nanoakes of the composites played the isotropic quasi-antennas role in favoring the penetration of microwave waves, which could generate continuous micro-networks and thus a large-scale vibrating micro-current would be induced into a dissipative current and consumed in discontinuous networks.…”