山竹壳合成贝壳粉负载纳米铁催化降解铬黑T
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国家自然科学基金项目(面上项目,重点项目,重大项目)


Mangosteen shell synthetic shell powder loaded nano iron catalytic degraded Eriochrome Black T
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The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    摘要:

    以山竹壳提取液和贝壳粉制备了贝壳粉负载的纳米零价铁(MS-NZVI/SP),探究其催化铬黑T的类芬顿降解效果。采用SEM、XRD、FTIR等手段对制备的材料进行表征。结果表明,MS-NZVI/SP被成功制备,且呈均匀球状颗粒,表面覆盖了有机物多酚,具有较好的稳定性和重复使用性。通过单因素实验优化了MS-NZVI/S对铬黑T降解性能,得到优化条件为:贝壳粉与纳米零价铁负载质量比1∶1,温度35℃,溶液pH为3,投加4 mL过氧化氢,100 mg合成的材料。在优化条件下,铬黑T的降解效率可达到93.01%,其降解过程符合准二级动力学模型。

    Abstract:

    Shell powder loaded with nano-zero valent iron (MS-NZVI/SP) was prepared by mangosteen shell extract and shell powder and was used to investigate the Fenton-like degradation effect of eriochrome black T. The prepared samples were characterized by SEM, XRD and FTIR. The results showed that MS-NZVI/SP was successfully prepared and displayed uniform spherical particles. The surface of MS-NZVI/SP was covered with organic polyphenols. Furthermore, it had good stability and reusability. The degradation performance of eriochrome black T on MS-NZVI/SP was optimized by single factor experiments. The optimized conditions were as follows: loading mass ratio of shell powder to nano zero-valent iron of 1∶1, temperature of 35 ℃, pH of solution of 3, hydrogen peroxide dosage of 4 mL, synthetic material of 100 mg. Under these conditions, the degradation efficiency of eriochrome black T could reach 93.01%. The degradation process of eriochrome black T conformed to the quasi-secondary kinetic model.

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王昕玮,罗盛旭.山竹壳合成贝壳粉负载纳米铁催化降解铬黑T[J].精细化工,2021,38(5):0

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  • 收稿日期:2020-09-28
  • 最后修改日期:2020-12-08
  • 录用日期:2020-12-09
  • 在线发布日期: 2021-03-01
  • 出版日期: