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Multilayered nanocrystalline SnO2 hollow microspheres (MHS-SnO2) of a rutile structure with a controllable morphology have been successfully synthesised via a chemically induced self-assembly method by using tin chloride pentahydrate and sucrose as precursors in the glycol-water aided solvothermal synthesis. The morphology, composition, structure and luminescent properties of MHS-SnO2 are characterised by field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) with selected area electron diffraction, X-ray diffraction, Raman spectroscopy and photoluminescence spectroscopy. The FESEM, TEM and HRTEM images indicate that the as-prepared microspheres show a multilayer structure and the walls of the hollow microspheres are composed of single crystalline nanoparticles. The effect of calcinating temperature on the Raman and optical properties of the product is analysed and a self-assembly growth mechanism of the MHS-SnO2 is proposed. [ABSTRACT FROM AUTHOR]

Plasmonic nanomaterials with multiple components and designed structures show diverse properties and functions owing to the synergistic effects of the different components. Engineering the compositional and structural complexity of plasmonic nanomaterials is a powerful technique for expanding their range of applications. A facile approach to an unprecedented dart‐like type of nanostructure with AgPd bimetal selectively deposited at one end of Au nanobipyramids, forming AgPd nanodarts, is reported here. The synthetic process involves both galvanic replacement and Ostwald ripening. The morphological evolution of the AgPd nanodarts is thoroughly investigated and the growth mechanism is put forward. The as‐obtained AgPd nanodarts exhibit an outstanding photothermal conversion efficiency and peroxidase activity, which make them powerful for photothermally–catalytically combined tumor organoid ablation. In addition, two types of AgPd nanodart‐derived single‐end nanostructures, AgPd@ZIF‐8, and AgPd@TiO2 nanodarts, are prepared for the first time. The ZIF‐8 and TiO2 shell are preferentially coated at the AgPd end of the AgPd nanodarts, respectively. Both AgPd@ZIF‐8 and AgPd@TiO2 nanodarts show superior antimicrobial activities. The protocol and concept of modulating the structure of the nanodarts in this work can be extended to the development of a new class of plasmonic nanostructures with multifunctionalities. [ABSTRACT FROM AUTHOR]