Fabrication of Ag2CO3/SrCO3 Rods with Highly Efficient Visible-light Photocatalytic Activity

作者：Liu, Suqin; Li, Wang; Dai, Gaopeng^*; Hou, Qiufeil

来源：Rare Metal Materials and Engineering, 2017, 46(2): 312-316.

DOI：10.1016/s1875-5372(17)30086-3

• Ag2CO3/SrCO3 rod
• visible light
• photocatalytic
• heterostructure

Ag2CO3/SrCO3 rods were prepared by a facile precipitation method using AgNO3, Sr(NO3)(2), and Na2CO3 as precursors. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen adsorption-desorption isotherms, and UV -visible (UV-vis) diffuse reflectance spectroscopy. The photocatalytic activity was evaluated by photodegradation of methyl orange (MO) aqueous solutions under visible -light irradiation (lambda > 420 nm). The results indicate that the Ag2CO3/SrCO3 rods become thinner and shorter with the decrease of Ag2CO3/SrCO3 molar ratio. The as-prepared Ag2CO3/SrCO3 rods show excellent visible-light photocatalytic activity. Moreover, Ag2CO3/SrCO3 composites exhibit an enhanced photocatalytic activity compared with the monocomponent Ag2CO3 and SrCO3. Ag2CO3/SrCO3 rods with the Ag2CO3/SrCO3 molar ratio of 1:5 exhibit the highest activity due to the synergetic effects of the large surface area and the heterostructure.

• 出版日期2017-2
• 单位湖北文理学院