Abstract Cl-doped SnO photocatalysts were synthesized by mechanical alloying (MA) from SnCl2 and NH4HCO3. The effects of MA time on the structural characterization and photocatalytic activity of SnO powders were studied. Cl-doped SnO nanoparticles can be obtained by MA treatment after 1 h, but MA time considerably affected the crystalline size, microstrain, and photocatalytic properties of the samples. The crystalline size and specific surface area of the SnO samples gradually decreased and their microstrain increased with prolonged MA time. The peak intensity of the photoluminescence spectra of the Cl-doped SnO samples remarkably increased with prolonged MA time. Moreover, the MA samples had good photocatalytic properties. The photodegradation rate of methyl orange dye in 30 min over Cl-doped SnO nanoparticles obtained by MA for 2, 4, and 8 h was approximately 99%. Aging treatment of the SnO samples remarkably affected their phase composition, which can enhance the transformation of SnO to SnO2. The SnO2 transformation degree significantly increased with prolonged MA time through aging treatment, which also slightly deteriorated the degradation efficiency of the samples.

中文翻译：

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机械合金化制备具有优异光催化性能的Cl掺杂SnO粉末

摘要 通过机械合金化 (MA) 从 SnCl2 和 NH4HCO3 合成了 Cl 掺杂的 SnO 光催化剂。研究了 MA 时间对 SnO 粉末结构表征和光催化活性的影响。1小时后通过MA处理可以获得Cl掺杂的SnO纳米颗粒，但MA时间显着影响样品的晶体尺寸、微应变和光催化性能。随着 MA 时间的延长，SnO 样品的晶体尺寸和比表面积逐渐减小，其微应变增加。随着 MA 时间的延长，Cl 掺杂的 SnO 样品的光致发光光谱的峰值强度显着增加。此外，MA 样品具有良好的光催化性能。甲基橙染料在 30 分钟内对由 MA 获得的 Cl 掺杂的 SnO 纳米粒子的光降解速率为 2, 4, 8 小时约为 99%。SnO 样品的时效处理显着影响了它们的相组成，这可以促进 SnO 向 SnO2 的转变。通过时效处理，随着 MA 时间的延长，SnO2 转化程度显着增加，这也略微降低了样品的降解效率。