access icon free Facile synthesis of TiO2 hollow spheres via aerosol-assisted spray drying for photocatalysis

A simple and feasible aerosol-assisted spray-drying method was developed. High-resolution transmission electron microscopy images demonstrated the as-prepared TiO2 possessed hollow structure with large cavity formed by the accumulation of numerous nanoparticles. Moreover, the obtained TiO2 hollow spheres could lead to the improved light-harvesting and low recombination of photo-generated electron–hole carriers, as well as large specific surface area. These excellent properties contributed to the superior photocatalytic activity in degrading Rhodamine B.

Inspec keywords: semiconductor growth; wide band gap semiconductors; catalysis; photochemistry; titanium compounds; powder technology; electron-hole recombination; transmission electron microscopy; drying; spraying; voids (solid); dyes

Other keywords: cavity; photo-generated electron-hole carrier recombination; light-harvesting; hollow spheres; aerosol-assisted spray drying; high-resolution transmission electron microscopy; TiO2; photocatalytic activity; rhodamine B degradation; specific surface area; nanoparticles

Subjects: Charge carriers: generation, recombination, lifetime, and trapping (semiconductors/insulators); Heterogeneous catalysis at surfaces and other surface reactions; Inclusions and voids; Oxide and ferrite semiconductors; Photolysis and photodissociation by IR, UV and visible radiation; Powder techniques, compaction and sintering

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http://iet.metastore.ingenta.com/content/journals/10.1049/mnl.2017.0817
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content/journals/10.1049/mnl.2017.0817
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