Progress of metal organic frameworks-based composites in electromagnetic wave absorption

Ultralight and superelastic multifunctional PI composite aerogels with a nanofibrous‐laminar synergistic structure for highly efficient electromagnetic wave absorption

“…There were multiple heterogeneous interface polarization relaxations between the CLZFO/SiO 2 nanofibers, SIC particles, PI matrix, and RGO (Figure S10). As shown in Figure S11, the dielectric loss tangent (tan δ ε = ε ″/ ε ') also reflected the microwave loss capability of the aerogels with different mass ratios 38,39 . As the proportion of CLZFO/SiO 2 nanofibers in the aerogel increased, the interfacial polarization and tan δ ε value increased, and the optimal tan δ ε value was observed for the PASI/CLS (1:2) PI aerogel sample.…”

Research progress of MXenes and layered double hydroxides for supercapacitors

“…), which is used to balance the medium positive charge of LDHs main laminate. [108][109][110][111] LDHs with different physicochemical properties are obtained by varying the molar ratios of M 2+ / M 3+ , [112][113][114] the properties of metal cations, the type of interlayer anions, and other conditions. [115][116][117][118][119][120] LDHs have attracted extensive and in-depth research attention in the field of electrochemistry.…”

“…), which is used to balance the medium positive charge of LDHs main laminate. 108–111 LDHs with different physicochemical properties are obtained by varying the molar ratios of M 2+ /M 3+ , 112–114 the properties of metal cations, the type of interlayer anions, and other conditions. 115–120…”

Magnetic Core@Shell Fe3O4@Polypyrrole@Sodium Dodecyl Sulfate Composite for Enhanced Selective Removal of Dyestuffs and Heavy Metal Ions from Complex Wastewater

“…The adsorption method has become one of the most effective means for the treatment of sewage because of its simple operation, high removal efficiency, no secondary pollution, and low cost. , The adsorption method based on magnetic separation technology has attracted extensive attention in water treatment applications. − Fe 3 O 4 microspheres have a large specific surface area, high surface activity, and most importantly, high magnetism, so they can play an important role in water treatment as an adsorbent. In addition, of particular attention is that the magnetism stemming from Fe 3 O 4 microspheres can ensure the rapid separation of the adsorbent from the solution. − However, the lack of specific interactions between Fe 3 O 4 microspheres and the adsorbates often leads to inferior adsorption performances. , Therefore, the combination of Fe 3 O 4 microspheres and conducting polymers − having abundant functional groups is considered to overcome this shortcoming. Polypyrrole (PPy) has many advantages due to its good electrical conductivity, redox properties, environmental stability, and low price, and, notably, the presence of positively charged nitrogen atoms that can adsorb dyestuffs and reduce heavy metal ions. − For instance, Liu et al fabricated a Fe 3 O 4 @PPy composite and tested trace vitamin D 3 in aquatic products by extraction-high performance liquid chromatography and achieved remarkable results.…”