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Green Synthesis of Ag-Au Bimetallic Nanocomposites Using Waste Tea Leaves Extract for Degradation Congo Red and 4-Nitrophenol

Author

Listed:
  • Chun-Won Kang

    (Department of Housing Environmental Design and Research Institute of Human Ecology, College of Human Ecology, Jeonbuk National University, Jeonju 54896, Korea)

  • Haradhan Kolya

    (Department of Housing Environmental Design and Research Institute of Human Ecology, College of Human Ecology, Jeonbuk National University, Jeonju 54896, Korea)

Abstract

A sustainable supply of pure water is a great challenge in most developing and third-world countries. Nanomaterial-based technology offers technological development for wastewater purification. Nanocatalysis hydrogenation of nitroarene and dye molecules is a hot model in many research fields. Herein, we report eco-friendly and facile technology to synthesize Ag-Au bimetallic nanocomposites. The synthesized nanocomposites are characterized by ultraviolet–visible spectroscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, field emission scanning electron microscopy and high-resolution transmission electron microscopy. The synthesized nanocomposite can efficiently degrade Congo red and 4-nitrophenol in water and in the presence of sodium borohydride. The results show that it degrades Congo red and 4-nitrophenol entirely within 6 and 7 min, respectively. These results could be useful for the green synthesis of Ag-Au bimetallic nanocomposites and help to remove organic dye molecules and nitroaromatics from wastewater.

Suggested Citation

  • Chun-Won Kang & Haradhan Kolya, 2021. "Green Synthesis of Ag-Au Bimetallic Nanocomposites Using Waste Tea Leaves Extract for Degradation Congo Red and 4-Nitrophenol," Sustainability, MDPI, vol. 13(6), pages 1-9, March.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:6:p:3318-:d:518959
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    Citations

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    Cited by:

    1. Haradhan Kolya & Chun-Won Kang, 2023. "Bio-Based Polymeric Flocculants and Adsorbents for Wastewater Treatment," Sustainability, MDPI, vol. 15(12), pages 1-36, June.
    2. Siwei Yang & Yichao Zhuang & Yuanfang Shen & Weihang Han & Liangchen Chen & Qiang Sun & Di Wu & Hui Zheng, 2021. "Carbene Ligand-Doped Fe 2 O 3 Composite for Rapid Removal of Multiple Dyes under Sunlight," Sustainability, MDPI, vol. 13(22), pages 1-14, November.

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