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首页> 外文期刊>RSC Advances >Fabrication of resin supported Au-Pd bimetallic nanoparticle composite to efficiently remove chloramphenicol from water
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Fabrication of resin supported Au-Pd bimetallic nanoparticle composite to efficiently remove chloramphenicol from water

机译：树脂的制备支持Au-Pd双金属纳米颗粒复合物，以有效地从水中取出氯霉素

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摘要

The evolution of antibiotic resistance and the potential impact on human health of chloramphenicol (CAP) have made it an environmental pollutant requiring urgent action. In this study, Au-Pd bimetallic nanoparticles (BNPs) were first synthesized and then successfully loaded on Amberlite 717 to form an Amberlite 717 supported Au-Pd BNP catalytic system (717@Au-Pd) with the mass fraction of Au-Pd at about 4.5%. The as-synthesized catalytic system was used to degrade CAP in water under a H-2 atmosphere at room temperature. When 0.5 g of 717@Au-Pd was added into the CAP solution (50 mg L-1, 50 mL, pH 7), about 60% of CAP was absorbed on the 717@Au-Pd in the first 10 h and then all of CAP can be completely removed in the following 3 h under a H-2 atmosphere. The degradation process of the reaction can be fitted with a first-order kinetics equation with the kinetics constant of 4.3 h(-1) +/- 0.009. The degradation products and mechanism were studied using LC/MSD Trap-XCT. The results showed that CAP was removed by the 717@Au-Pd via cleaving the carbon-halogen bond of CAP while keeping the nitro-group unaffected and this made the degradation products less environmentally toxic. The recycled experiments showed that the removal rate of CAP can still be maintained at 99% even after 5 cycles. The study indicated that 717@Au-Pd is a promising catalyst for removing environmental pollutants such as CAP containing carbon-halogen bonds.
机译：抗生素抗性和氯霉素对人体健康（CAP）的潜在影响的发展使人们的环境污染物，需要采取紧急行动。在这项研究中，金钯双金属纳米颗粒（BNPS）首先合成，然后成功地加载在Amberlite 717，以形成的Amberlite 717支持的金钯BNP催化系统（717 @金钯），在金钯的质量分数约4.5％。所合成的催化系统用于在室温下在水中劣化CAP一个H-2气氛下进行。当将0.5g 717 @金钯加入到CAP（50毫克L-1，50毫升，pH 7）中，约CAP的60％是在第一个10 H吸收在717 @金钯，然后所有的CAP可以在H-2气氛下的以下3小时完全去除。该反应的降解过程可以配备一阶动力学与4.3小时的动力学常数方程（-1）+/- 0.009。使用LC / MSD陷阱XCT的降解产物和机理进行了研究。结果表明，CAP是由717 @金钯经由切割CAP的碳 - 卤素键，同时保持硝基团不受影响除去，这由降解产物较少环境有毒的。再循环的实验表明，CAP的去除率仍然可以在99％，甚至5次循环后保持不变。研究表明，717 @金钯是用于去除环境污染物如CAP含碳卤素键的有前途的催化剂。

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  • 来源
    《RSC Advances》 |2015年第24期|共7页
  • 作者

    Wang Xu; Wang Yun-Xia; Yuan Baoling; Cui Hao-Jie; Fu Ming-Lai;

  • 作者单位

    Chinese Acad Sci Key Lab Urban Pollutant Convers Xiamen 361021 Peoples R China;

    Chinese Acad Sci Key Lab Urban Pollutant Convers Xiamen 361021 Peoples R China;

    Huaqiao Univ Coll Civil Engn Xiamen 361021 Peoples R China;

    Chinese Acad Sci Key Lab Urban Pollutant Convers Xiamen 361021 Peoples R China;

    Chinese Acad Sci Key Lab Urban Pollutant Convers Xiamen 361021 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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