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We present a simple alternative pathway to transform carbon dioxide to perpetually stored solid carbon.

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The engineering of core−shell nanostructures provides a great potential to induce interfacial polarization relaxation and optimize impedance matching. Herein, core−shell-structured MHCS@MoS 2 nanospheres are developed using hollow carbon (MHCS) and stacked MoS 2 nanosheets. Heterostructures between cores and shells significantly boost the interface polarization effect and effectively reduce the electromagnetic wave (EMW) reflection caused by highly conductive MHCS. Thereby, efficient and broadband electromagnetic microwave absorption (EMA) performance can be achieved. Through controlling the thickness of MoS 2 shells and the graphitization of MHCS cores, the effective absorption bandwidth (f E ) of MHCS@MoS 2 can reach 6.21 GHz at the thickness of only 2.1 mm. The nanodesigned core−shell-shaped MHCS@MoS 2 nanospheres are demonstrated as a promising high-performance EMA material.

Reducing CO2 emissions is crucial for the future survival of the planet and the demand for innovative technologies to capture and reduce CO2, focusing on global net-zero carbon emissions is...