In:
CrystEngComm, Royal Society of Chemistry (RSC), Vol. 24, No. 37 ( 2022), p. 6534-6545
Abstract:
Porous CaTiO 3 solid submicrospheres and SrTiO 3 and BaTiO 3 hollow submicrospheres, which have large surface areas (40.21 to 228.18 m 2 g −1 ) and uniform particle sizes, have been synthesized by a self-template assisted hydrothermal method with glucose as an additive. The results showed that the crystalline phase and morphology of ATiO 3 were significantly influenced by the addition of glucose. Samples with irregular morphology and weak crystallinity were obtained without glucose as the reactant. The underlying formation mechanism of SrTiO 3 and BaTiO 3 hollow submicrospheres in the presence of glucose was manifested by XRD, SEM and TEM to involve Sr 2+ , Ba 2+ , and OH − ion diffusion, reactions and Ostwald ripening, while the formation of CaTiO 3 solid submicrospheres has a different growth mechanism during the hydrothermal process, that is, only diffusion–crystallization, without Ostwald ripening. The obtained porous SrTiO 3 hollow spheres show the highest photocatalytic performance on methylene blue, which may be related to the combined effects of surface area, band gap and interfacial charge transfer.
Type of Medium:
Online Resource
ISSN:
1466-8033
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
2025075-7
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