Green synthesis of copper nanoparticles for the efficient removal (degradation) of dye from aqueous phase

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• 作者：Tanur Sinha ; M. Ahmaruzzaman
• 关键词：Copper nanoparticles ; Gelatin ; Methylene blue ; Photodegradation
• 刊名：Environmental Science and Pollution Research
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：22
• 期：24
• 页码：20092-20100
• 全文大小：1,184 KB
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• 作者单位：Tanur Sinha (1)
  M. Ahmaruzzaman (1)
  
  1. Department of Chemistry, National Institute of Technology, Silchar, 788010, Assam, India
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Environment
  Environment
  Atmospheric Protection, Air Quality Control and Air Pollution
  Waste Water Technology, Water Pollution Control, Water Management and Aquatic Pollution
  Industrial Pollution Prevention
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1614-7499

文摘

The present work reports the utilization of a common household waste material (fish scales of Labeo rohita) for the synthesis of copper nanoparticles. The method so developed was found to be green, environment-friendly, and economic. The fish scale extracts were acting as a stabilizing and reducing agents. This method avoids the use of external reducing and stabilizing agents, templates, and solvents. The compositional abundance of gelatin may be envisaged for the effective reductive as well as stabilizing potency. The mechanisms for the formation of nanoparticles have also been presented. The synthesized copper nanoparticles formed were predominantly spherical in nature with an average size of nanoparticles in the range of 25-7 nm. The copper nanoparticles showed characteristic Bragg’s reflection planes of fcc which was supported by both selected area electron diffraction and X-ray diffraction pattern and showed surface plasmon resonance at 580 nm. Moreover, the energy dispersive spectroscopy pattern also revealed the presence of only elemental copper in the copper nanoparticles. The prepared nanoparticles were used for the remediation of a carcinogenic and noxious textile dye, Methylene blue, from aqueous solution. Approximately, 96 % degradation of Methylene blue dye was observed within 135 min using copper nanoparticles. The probable mechanism for the degradation of the dye has been presented, and the degraded intermediates have been identified using the liquid chromatography-mass spectroscopy technique. The high efficiency of nanoparticles as photocatalysts has opened a promising application for the removal of hazardous dye from industrial effluents contributing indirectly to environmental cleanup process. Keywords Copper nanoparticles Gelatin Methylene blue Photodegradation