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由简单的水热法合成了一种可高效降解有机染料的氧缺陷型Sn O2纳米颗粒新型光催化剂,用X射线衍射、透射电镜、高分辨透射电镜和紫外-可见分光光度计等手段对其结构及性能进行了表征。结果表明,所制备的催化剂的禁带宽度最小可达2.90e V,可实现对可见光的有效吸收利用,对甲基橙的降解反应具有很高的光催化活性。将该催化剂(1g/L)分散在10mg/L的甲基橙溶液中,可见光照射下,40min内甲基橙的降解率达99%以上。由于该催化剂具有合成方法简单、高效、成本低和反应条件温和等特点,为有效解决有机染料对环境的污染问题提供了一条新的途径。
A new type of photocatalyst of oxygen-deficient SnO2 nanoparticle that can efficiently degrade organic dyes was synthesized by a simple hydrothermal method. X-ray diffraction, transmission electron microscopy, high resolution transmission electron microscopy and UV-visible spectrophotometer Structure and performance were characterized. The results show that the prepared catalyst has a band gap of at least 2.90eV, which can effectively absorb and utilize visible light and has high photocatalytic activity on the degradation of methyl orange. The catalyst (1g / L) was dispersed in 10mg / L methyl orange solution, the visible light irradiation, 40min degradation rate of methyl orange over 99%. Due to the advantages of simple, high efficiency, low cost and mild reaction conditions, the catalyst provides a new approach for effectively solving the problem of environmental pollution caused by organic dyes.