Ultrathin thickness ( 3.5 GHz. The investigation of the absorption mechanism revealed that moderate dielectric loss, magnetic loss, good impedance matching and the porous structure contributed to the high microwave absorption. This work opens up a potential strategy to prepare excellent microwave absorbents with ultrathin thickness and ultralow density.

Ultralight CoNi/rGO aerogels toward excellent microwave absorption at ultrathin thickness

It is extremely unattainable for a material to simultaneously obtain efficient electromagnetic (EM) absorption and green shielding performance, which has not been reported due to the competition between conduction loss and reflection. Herein, by tailoring the internal structure through nano-micro engineering, a NiCo2O4 nanofiber with integrated EM absorbing and green shielding as well as strain sensing functions is obtained. With the improvement of charge transport capability of the nanofiber, the performance can be converted from EM absorption to shielding, or even coexist. Particularly, as the conductivity rising, the reflection loss declines from − 52.72 to − 10.5 dB, while the EM interference shielding effectiveness increases to 13.4 dB, suggesting the coexistence of the two EM functions. Furthermore, based on the high EM absorption, a strain sensor is designed through the resonance coupling of the patterned NiCo2O4 structure. These strategies for tuning EM performance and constructing devices can be extended to other EM functional materials to promote the development of electromagnetic driven devices.

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A Nano-Micro Engineering Nanofiber for Electromagnetic Absorber, Green Shielding and Sensor.

Lightweight Ni Foam-Based Ultra-Broadband Electromagnetic Wave Absorber

Magnetic Ni/graphene connected with conductive carbon nano-onions or nanotubes by atomic layer deposition for lightweight and low-frequency microwave absorption

Solar-to-chemical energy conversion via heterogeneous photocatalysis is one of the sustainable approaches to tackle the growing environmental and energy challenges. Among various promising photocatalytic materials, plasmonic-driven photocatalysts feature prominent solar-driven surface plasmon resonance (SPR). Non-noble plasmonic metals (NNPMs)-based photocatalysts have been identified as a unique alternative to noble metal-based ones due to their advantages like earth-abundance, cost-effectiveness, and large-scale application capability. This review comprehensively summarizes the most recent advances in the synthesis, characterization, and properties of NNPMs-based photocatalysts. After introducing the fundamental principles of SPR, the attributes and functionalities of NNPMs in governing surface/interfacial photocatalytic processes are presented. Next, the utilization of NNPMs-based photocatalytic materials for the removal of pollutants, water splitting, CO2 reduction, and organic transformations is discussed. The review concludes with current challenges and perspectives in advancing the NNPMs-based photocatalysts, which are timely and important to plasmon-based photocatalysis, a truly interdisciplinary field across materials science, chemistry, and physics.

Non-Noble Plasmonic Metal-Based Photocatalysts.

Co/C/Fe/C Hierarchical Flowers with Strawberry-like Surface as Surface Plasmon for Enhanced Permittivity, Permeability, and Microwave Absorption Properties

Ni2+ guided phase/structure evolution and ultra-wide bandwidth microwave absorption of CoxNi1-x alloy hollow microspheres

Chemical conversion of Cu2O/PPy core-shell nanowires (CSNWs): A surface/interface adjustment method for high-quality Cu/Fe/C and Cu/Fe3O4/C CSNWs with superior microwave absorption capabilities

Na He

Papers

Co/C/Fe/C Hierarchical Flowers with Strawberry-like Surface as Surface Plasmon for Enhanced Permittivity, Permeability, and Microwave Absorption Properties

Ni2+ guided phase/structure evolution and ultra-wide bandwidth microwave absorption of CoxNi1-x alloy hollow microspheres

Chemical conversion of Cu2O/PPy core-shell nanowires (CSNWs): A surface/interface adjustment method for high-quality Cu/Fe/C and Cu/Fe3O4/C CSNWs with superior microwave absorption capabilities

Polarization and matching modulation of peapod-like Cu/C nanowires to improve microwave absorption

Tailoring impedance match and enhancing microwave absorption of Fe3O4/Bi24Fe2O39/Bi hollow porous microrods by controlling their composition