Novel synthesis of Pd nanosheets used as highly sensitive SERS substrate for trace fluorescent dye detection Novel synthesis of Pd nanosheets used as highly sensitive SERS substrate for trace fluorescent dye detection

Novel synthesis of Pd nanosheets used as highly sensitive SERS substrate for trace fluorescent dye detection 

Tran Thi Bich Quyen1*, Doan Van Hong Thien1, Bui Le Anh Tuan2

1Department of Chemical Engineering, College of Technology, Can Tho University, 3/2 Street, Ninh Kieu District, Can Tho City 900000, Vietnam

2Department of Civil Engineering, Can Tho University, 3/2 Street, Ninh Kieu District, Can Tho City 900000, Vietnam

Adv. Mater. Lett., 2019, 10 (4), pp 279-283

DOI: 10.5185/amlett.2019.2206

Publication Date (Web): Jan 10, 2019

E-mail: ttbquyen@ctu.edu.vn 

Abstract


In this work, a simple and effective method has been developed to synthesize Pd nanosheets that were successfully employed by reducing the Pd salt precursor in N, N-dimethylformamide (DMF), cetyltrimethylammonium bromide (CTAB) and lemon extract in the presence of Tungsten hexacarbonyl with different reaction conditions (e.g., temperature, reaction time). It indicates to be an eco-friendly, simple and novel method for the synthesis, providing a cost-effective and efficient route for the Pd nanosheets’ synthesis. The Pd nanosheets were characterized by UV-vis spectroscopy, transmission electron microscopy (TEM), and X-ray diffraction (XRD). It was also demonstrated that the Pd nanosheets were both highly SERS-active and stable. Results show that Rhodamine 6G (R6G), used as a fluorescent marker, could be detected over a wide concentration range from 10−13 to 10−8 M, with the lower limit of detection being 10−13 M.

Keywords

Pd nanosheets (Pd NSs), environmental friendly, lemon extract, Surface-Enhanced Raman Scattering (SERS), rhodamine 6G (R6G).

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