Euphorbia heterophylla leaf extract mediated green synthesis of Ag/TiO₂ nanocomposite and investigation of its excellent catalytic activity for reduction of variety of dyes in water

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• 作者：Monireh Atarod^a ; Mahmoud Nasrollahzadeh^a ; ^{mahmoudnasr81@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; S. Mohammad Sajadi^b
• 关键词：Euphorbia heterophylla ; Ag/TiO2 nanocomposite ; NaBH4 ; Organic dyes ; Water
• 刊名：Journal of Colloid and Interface Science
• 出版年：2016
• 出版时间：15 January 2016
• 年：2016
• 卷：462
• 期：Complete
• 页码：272-279
• 全文大小：1778 K

文摘

This work reports a facile and green synthesis of Ag/TiO₂ nanocomposite by extract of leaves of Euphorbia heterophylla without any stabilizer or surfactant. The green synthesized Ag/TiO₂ nanocomposite was characterized by field emission scanning electron microscope (FESEM), energy-dispersive X-ray spectroscopy (EDS), fourier-transform infrared (FT-IR) spectroscopy, X-ray diffraction analysis (XRD) and UV–vis. The Ag/TiO₂ nanocomposite was found to be effective catalyst for reduction of various dyes, such as 4-nitrophenol (4-NP), Methyl orange (MO), Congo red (CR) and Methylene blue (MB) in the presence of NaBH₄ in water at room temperature. Catalysis reactions were monitored by employing UV–vis spectroscopy. Catalysis reactions followed pseudo-first order rate equation. The catalyst can be recovered and reused several times without significant loss of its catalytic activity.