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It is vital to improve rate capability and cycling performance of Sb2S3 to promote its application in lithium-ion batteries. Herein, Sb2S3 is successfully anchored inside carbon nanotube-in-nanotube via a multi-step...

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Perovskite-related oxides exhibiting fascinating electric and magnetic properties are important functional materials. We report, for the first time, that pre-perovskite (PP) PbTiO 3 , characterized by one-dimensional (1D) TiO 6 octahedron columns, has a direct-band structure with a gap of 3.20 eV. The faceted single-crystal nanofibers of PP-PbTiO 3 demonstrate strong green and near infrared (NIR) photoluminescence (PL) emission at room temperature, which are intrinsic and subjected to quasi-1D crystal structure and electronic band structure. These nanofibers serving as new direct band-gap semiconductors may find applications in novel optical and optoelectronic devices. Experimental section Preparation and characterizationThe nanofibers of pre-perovskite PbTiO 3 were prepared by a polymer-assisted hydrothermal method. Chemistry grade