Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 112, Issue 39, Pages 15299-15305Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp804921g
Keywords
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Funding
- National Key Project of Fundamental Research [2005CB623605]
- National Natural Science Foundation of China [50572116, 5060249]
- Shanghai Nanotechnology Promotion Center [0652nm022]
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A solvothermal method combining a calcination process was conducted to synthesize NiO hierarchical architectures with controllable morphologies and sizes. First, several hollow alpha-Ni(OH)(2) hierarchical architectures assembled by alpha-Ni(OH)(2) nanosheets had been synthesized through the solvothermal method. The nucleation-mediated mechanism overwhelmingly determined the morphology of hollow alpha-Ni(OH)(2) architectures through tuning the nucleation rate. The hollow alpha-Ni(OH)(2) spheres could be formed in the case of high nucleation rate. However, the hollow alpha-Ni(OH)(2) tubes would be obtained at low nucleation rate. Second, the hollow NiO hierarchical architecture could be obtained from the precursor without changing their morphologies by a simple calcination procedure. The as-obtained hollow NiO hierarchical architectures showed high photocatalytic property to decompose acid red I pollutant and could also be easily recycled under an external magnetic field, displaying great potential in environmental pollutant cleanup applications.
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