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l -Lysine-Assisted Synthesis of ZrO 2 Nanocrystals and Their Application in Photocatalysis

2009; American Chemical Society; Volume: 113; Issue: 42 Linguagem: Inglês

10.1021/jp9057324

1932-7455

Zheng He, Kaiyu Liu, Huaqiang Cao, Xinrong Zhang,

Catalytic Processes in Materials Science

Nanocrystalline ZrO2 with narrow size distribution and mean size ∼8 nm has been synthesized by the l-lysine-assisted hydrothermal method. The structural and morphological characterizations were studied by powder X-ray diffraction (XRD) and transmission electron microscopy (TEM), and physicochemical characterizations were carried out by using infrared spectra (IR), UV−vis spectra, and photoluminescence (PL) spectra. On the basis of the choice of synthesis parameters, monoclinic (m-) and tetragonal (t-) phases of ZrO2 coexisted with a size ∼8 nm. This is an important result with respect to application in catalytic properties of nanocryalline ZrO2. The possible nucleation and growth process is also discussed.