| Autor: |
Nguyen, Tran Hung1 (AUTHOR), Hoang, Nhat Huy1,2 (AUTHOR), Van Tran, Chinh1 (AUTHOR), Nguyen, P.T.M.3,4 (AUTHOR), Dang, Trung-Dung1,2 (AUTHOR) dung.dangtrung@hust.edu.vn, Chung, W. Jin5 (AUTHOR), Chang, S. Woong5 (AUTHOR), Nguyen, D. Duc1,5,6 (AUTHOR) nguyensyduc@gmail.com, Senthil Kumar, P.1,7,8,9 (AUTHOR) senthilkumarp@ssn.edu.in, La, Duong Duc1 (AUTHOR) duc.duong.la@gmail.com |
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| Zdroj: |
Chemosphere. Nov2022, Vol. 306, pN.PAG-N.PAG. 1p. |
| Abstrakt: |
Green synthesis has emerged as a sustainable approach for the fabrication of nanomaterials in the last few decades. Leaf extracts have been considered low-cost and highly efficient reactants for the synthesis of nanoparticles. In this study, an aqueous extract of Cleistocalyx operculatus leaves was employed as a reductant to synthesize Ag/TiO 2 nanocomposites. The morphology, structure, and interface interaction of the Ag/TiO 2 nanocomposites were investigated by (i) X-ray diffraction (XRD) to determine the crystallinity, (ii) scanning electron microscopy (SEM) to determine the morphologies, (iii) energy dispersive X-ray spectroscopy (EDX) to determine the elemental composition and distribution, and (iv) diffuse reflectance spectroscopy (DRS) to understand the optical properties. The results showed that Ag nanoparticles (AgNPs) with particle sizes of 20–40 nm homogeneously covered the surface of the TiO 2 nanoparticles. The green-synthesized Ag/TiO 2 nanocomposite also exhibited an excellent photodegradation ability for Rhodamine B with a removal percentage up to 91.4% after 180 min of photocatalytic reaction. [Display omitted] • Green synthesis of Ag/TiO2 nanocomposites using Cleistocalyx operculatus leaf extract. • Comprehensive characterizations of Ag/TiO2 nanocomposites prepared by green synthesis. • Ag nanoparticles (AgNPs) uniformly covered the surface of TiO2 nanoparticles. • The AgNPs were coated with polysaccharides of the leaf extract to prevent oxidation. • Biosynthesized Ag/TiO2 nanocomposites possess excellent photodegradation property. [ABSTRACT FROM AUTHOR] |
| Databáze: |
GreenFILE |
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Full Text from ScienceDirect