Layered double hydroxides derived 3D flower-like FeNi@C microspheres as lightweight and high-efficient electromagnetic wave absorber

Accelerating the Electrocatalytic Performance of NiFe–LDH via Sn Doping toward the Water Oxidation Reaction under Alkaline Condition

“…After fruitful synthesis, initially, powder X-ray diffraction analysis (PXRD) was performed to confirm the formation of NiFe–LDH and Sn-doped NiFe–LDH, and the obtained results are displayed in Figure . The PXRD patterns of NiFe–LDH show that the obtained diffraction planes (003), (006), (012), (015), (018), (110), (113), and (116) perfectly match with the ICDD file no 00-051-0463 of NiFe–LDH . Interestingly, in the cases of Sn-doped NiFe–LDH-based samples, the (003) plane is shifted slightly toward higher 2Θ values; also, the intensity of the parental peak is reduced, suggesting that doping of Sn might decrease the cell volume and indicating the successful doping of Sn in the NiFe–LDH lattice .…”

“…The PXRD patterns of NiFe− LDH show that the obtained diffraction planes (003), (006), (012), (015), (018), (110), (113), and (116) perfectly match with the ICDD file no 00-051-0463 of NiFe−LDH. 57 Interestingly, in the cases of Sn-doped NiFe−LDH-based samples, the (003) plane is shifted slightly toward higher 2Θ values; also, the intensity of the parental peak is reduced, suggesting that doping of Sn might decrease the cell volume and indicating the successful doping of Sn in the NiFe−LDH lattice. 58 From the FT-IR analysis, we obtained the molecular vibrations of the intercalated anions of LDH, and the corresponding results are displayed in Figure 2.…”

Controllable preparation of 2D carbon paper modified with flower-like WS2 for efficient microwave absorption

“…Subsequently, stable flower-like WS 2 is constructed on the CP surface through self-assembly as a result of Ostwald ripening. [34][35][36] In this reaction, the microstructure and MA properties of the product are easily tuned by varying the concentration of the original solution.…”

Controllable Architecture of ZnO/FeNi Composites Derived from Trimetallic ZnFeNi Layered Double Hydroxides for High‐Performance Electromagnetic Wave Absorbers

“…Preparation of ZnO/FeNi Composites: In the previous work, FeNi@C microsphere was fabricated by pyrolysis of FeNi LDH precursor. [20] It was found that the composition of composites can be controlled by adjusting the pyrolysis temperature (500-800 °C). And the pure FeNi alloy can be obtained by sintering at more than 700 °C for 2 h. Therefore, in this work, ZnO/FeNi composites were prepared by pyrolysis of ZnFeNi LDHs in a tube furnace at 700 °C for 2 h at a heating rate of 5 °C min −1 under Ar/H 2 atmosphere (5% H 2 ).…”

“…The as-prepared FeNi@C microspheres exhibited superior EM wave absorption properties with an optimal reflection loss (RL) of −35.4 dB achieved at an ultralow matching thickness of 1.4 mm. [20] Based on the EM wave loss mechanism and structural design theory, ZnO/FeNi composites with flower-like structure are expected to obtain excellent EM wave absorption performance. In this study, trimetallic ZnFeNi LDH precursors have been prepared via a facile method using deionized water as a single solvent.…”