Preparation and Characterization of Raspberry-Like TiO2/Cu Composite Particles

Jun Yan; Hai Ping Cui; Shi Guo Du; Bin Wang

doi:10.4028/www.scientific.net/KEM.368-372.1480

Paper Titles

Preparation of Titania Film by Pyrolysis of Chelated Tetrabutyl Titanate
p.1468

Preparation of Titania Film by Vapor Decomposition of Chelated Tetrabutyl Titanate
p.1471

Photocatalyses of Nano-Scaled ZnSe/TiO₂ and ZnS/TiO₂ Heterojunctions
p.1474

XPS Investigation on Nano-TiO₂ Modified by Titanate Coupling Agent
p.1477

Preparation and Characterization of Raspberry-Like TiO₂/Cu Composite Particles
p.1480

Influence of Cu²⁺ Doping on the Photocatalytic Activity of TiO₂ Film
p.1483

Visible Light Photoreduction Properties of N-Doped TiO₂ Nanostructured Films
p.1486

Hydrothermal Synthesis of Fe/N Co-Doped Titanium Dioxide and its Sterilization Activity via E. Coli under Visible Light Irradiation
p.1489

Sterilization of E. Coli by Fe-Doped TiO₂ Modified Photocatalytic Paint under Visible Light Irradiation
p.1493

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Preparation and Characterization of Raspberry-Like TiO₂/Cu Composite Particles

Abstract:

Raspberry-like TiO2/Cu composite particles were prepared under mild conditions (75°C and ambient pressure) by hydrolysis of Ti(OBu)4 in acidic aqueous solution and subsequent reflux in the presence of micron size Cu powders. A 3-level and 4-factor design was employed to evaluate the effect of the main parameters on the coating quality. TiO2 particles of approximate 100nm in size were found coating on the surfaces of Cu powders to form raspberry-like structure. Ti and Cu element mainly existed on the composite particle surface as the chemical state of Ti4+ and Cu2+. TG-DTA analysis showed the TiO2 coating increased the thermal stability of Cu particles. The composite particles began oxidizing at 400°C while pure copper particles oxidized at 200°C.