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以硝酸铋为前驱体,通过一步沉淀法在室温下反应1h合成了BiO1.8·0.04H2O纳米光催化剂。通过XRD,SEM,TEM,XPS和紫外可见漫反射等研究了催化剂的物理化学性质。合成的BiO1.8·0.04H2O纳米颗粒具有孔径为14.8nm的介孔结构,禁带宽度为3.05eV。BiO1.8·0.04H2O纳米颗粒被用来去除气相污染物NOx,并表现出良好的光催化活性,超过了Bi2O3和TiO2(P25)的光催化活性。通过活性的循环测试可知,该光催化剂具有良好的稳定性。本研究能为低温合成铋基光催化剂提供一种新颖而简单的方法。
BiO1.8 · 0.04H2O nano-photocatalyst was synthesized by reaction of bismuth nitrate precursor for one hour at room temperature by one-step precipitation method. The physicochemical properties of the catalysts were investigated by XRD, SEM, TEM, XPS and UV-Vis diffuse reflectance spectroscopy. The synthesized BiO1.8 · 0.04H2O nanoparticles have a mesoporous structure with a pore size of 14.8 nm with a forbidden band width of 3.05 eV. BiO1.8 · 0.04H2O nanoparticles were used to remove gaseous pollutants NOx, and showed good photocatalytic activity, exceeding the photocatalytic activity of Bi2O3 and TiO2 (P25). Through the activity of the cycle test shows that the photocatalyst has good stability. This study can provide a novel and simple method for the low temperature synthesis of bismuth-based photocatalysts.