Preparation of Au nanoparticles by Q switched laser ablation and their application in 4-nitrophenol reduction
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ORIGINAL PAPER
Preparation of Au nanoparticles by Q switched laser ablation and their application in 4‑nitrophenol reduction Mahmoud Nasrollahzadeh1 · Nasrin Shafiei1 · Mahtab Eslamipanah2 · Parisa Fakhri2 · Babak Jaleh2 · Yasin Orooji3 · Rajender S. Varma4 Received: 27 May 2020 / Accepted: 8 July 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract This work reports the fabrication of Au nanoparticles (NPs) by laser ablation of a gold metal plate immersed in water in the absence of stabilizing agents and their application in the catalytic reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) using sodium borohydride ( NaBH4) in aqueous media at ambient temperature. UV–Vis, EDS (energy-dispersive X-ray spectroscopy), FESEM (field emission scanning electron microscopy), transmission electron microscopy and inductively coupled plasma-optical emission spectrometry analyses have been applied for the characterization of Au NPs which affirmed that they were successfully synthesized and their size ranged from 5–30 nm. The reduction rate for 4-NP with Au NPs using N aBH4 was measured via UV–Vis spectroscopy from 250 to 550 nm. The clean and eco-friendly protocol presented here neither produces hazardous wastes nor uses any toxic organic solvents, hazardous reductants and expensive surfactant template or capping agents; Au NPs display high catalytic activity as the reaction was completed within 20 min with 100% conversion.
* Mahmoud Nasrollahzadeh [email protected] * Babak Jaleh [email protected] * Rajender S. Varma [email protected] Yasin Orooji [email protected] 1
Department of Chemistry, Faculty of Science, University of Qom, Qom 3716146611, Iran
2
Department of Physics, Bu-Ali Sina University, Hamedan 65174, Iran
3
College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
4
Regional Center of Advanced Technologies and Materials, Palacky University, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
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M. Nasrollahzadeh et al.
Graphic abstract Greener preparation of Au nanoparticles by Q switched laser ablation and their application in 4-nitrophenol reduction
Keywords Au NPs · Laser ablation · Reduction · 4-Nitrophenol
Introduction 4-Nitrophenol (4-NP) is extensively used in industry and agriculture and is usually found in water and soil. It can be generated via the degradation of the insecticide parathion, which is used as an acaricide, soil disinfectant and pre-harvest foliage treatment for different indoor and outdoor crops (Chen et al. 2016). 4-NP has been detected in human urine, possibly due to exposure to OP pesticides (Hryhorczuk et al. 2002). As an environmental endocrine disruptor, it is not only a vasodilator (Mori et al. 2003) but also displays estrogenic and anti-androgenic activities (Li et al. 2006). Moreover, 4-NP is resistant to biodegradation; as a result, growing attention has been focused on understanding the toxicology of this class of compounds. Because of the large-scale produc
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