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자료유형
학술저널
저자정보
바티쿠티프랍하카르 (영남대학교) 변찬 (영남대학교) CHANDRAGIRI VENKATA REDDY (영남대학교)
저널정보
대한금속·재료학회 Electronic Materials Letters Electronic Materials Letters Vol.12 No.6
발행연도
2016.1
수록면
812 - 823 (12page)

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We report a simple solution-chemistry approach for thesynthesis of ZrO2/MoS2 hybrid photocatalysts, which containMoS2 as a cocatalyst. The material is usually obtained by a wetchemical method using ZrO(NO3)2 or (NH4)6Mo7O24·4H2O andC8H6S as precursors. The structural features of obtainedmaterials were characterized by X-ray diffraction (XRD), highresolutiontransmission electron microscopy (HRTEM), X-rayphotoelectron spectroscopy (XPS), thermal analysis (TG-DTA),N2 adsorption-desorption, and photoluminescence (PL). The influence on the photocatalytic activity of the MoS2 cocatalystconcentration with ZrO2 nanoparticles was studied. The MZr-2 hybrid sample had the highest photocatalytic activity for thedegradation of methyl orange (MO), which was 8.45 times higher than that of pristine ZrO2 ascribed to high specific surface areaand absorbance efficiency. Recycling experiments revealed that the reusability of the MZr-2 hybrid was due to the lowphotocorrosive effect and good catalytic stability. PL spectra confirmed the electronic interaction between ZrO2 and MoS2. Thephotoinduced electrons could be easily transferred from CB of ZrO2 to the MoS2 cocatalyst, which facilitate effective chargeseparation and enhanced the photocatalytic degradation in the UV region. A photocatalytic mechanism is proposed. It isbelieved that the ZrO2/MoS2 hybrid structure has promise as a photocatalyst with low cost and high efficiency forphotoreactions.

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