| β-In2S3的制备及其太阳光下降解土霉素 |
| 摘要点击 1346 全文点击 837 投稿时间：2014-12-12 修订日期：2015-03-23 |
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| 中文关键词 β-In2S3 水热反应 光催化降解 土霉素 太阳光 |
| 英文关键词 β-In2S3 hydrothermal process photocatalytic degradation oxytetracycline solar light |
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| 中文摘要 |
| 利用水热反应法制备β-In2S3纳米颗粒光催化剂,并利用SEM、TEM和XRD等对其进行分析表征; 采用土霉素溶液模拟四环素类抗生素废水,探讨In2S3对土霉素的降解效果. 结果表明, β-In2S3为立方相纳米颗粒结构,该纳米颗粒由纳米片组成,直径约15~30 nm. 以太阳光为辐射光源,In2S3对土霉素具有良好的光催化降解效果,在4 h内对初始浓度为30 mg·L-1的土霉素降解率可达98%以上. 降解土霉素后的催化剂在无水乙醇中清洗并烘干,经4次循环利用后,β-In2S3的降解能力仍能达到85%以上,表明β-In2S3光催化剂具有良好的稳定性以及光催化活性. |
| 英文摘要 |
| The preparation of β-In2S3 nanomaterial was carried out by reacting In(NO3)3 with thioacetamide through hydrothermal process at 120℃ for 12 h. The size and morphology of In2S3 were characterized by the scanning electron microscope (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD) while the degradation efficiency was evaluated by the photocatalytic degradation of oxytetracycline under natural sunlight. The results revealed that β-In2S3 nanoparticles are made up of nanosheets with a length of 15-30 nm and with high efficient catalytic performance, in which more than 98% of the initial oxytetracycline (30 mg·L-1) was degraded in 4 h. Furthermore, the prepared β-In2S3 can be recycled and kept efficient catalytic performance above 85% even after reusing for four times, which reflected the good stability and relative photocatalytic activity of In2S3. |
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