Amorphous MoO3−x nanosheets with enhanced LSPR are fabricated by introducing Mo atoms into the interlayers of MoO3via a hydrothermal and post-irradiation method, which is beneficial for photo-to-heat conversion.

The quasi-metallic NixMoO3 nanodots have been fabricated from semiconductive MoO3via SC CO2-assisted intercalation route, the introduction of Ni ion endows the NixMoO3 nanodots with enhanced plasmon effects and photothermal conversion efficiency.

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Amorphization of WO2.72 was successfully achieved with the assistance of supercritical carbon dioxide (SC CO2). Amorphous SC CO2-treated sample has strong optical absorbance and excellent photothermal conversion efficiency of 52.5% indicates they can be a promising photothermal agent.