by Nelson Naveas, Miguel Manso-Silván, Erico Carmona, Karla Garrido-Miranda, Jacobo Hernandez-Montelongo and Gonzalo Recio Sánchez
Abstract:
In the present work, nanostructured porous silicon (nPSi) thin films were used as a substrate for the deposition of green synthesized silver nanoparticles (AgNPs). Different kinds of AgNPs were green synthesized by using Peumo extract and changing AgNO3 concentration. UV-vis spectroscopy confirmed the success of the synthesis, and TEM characterization showed AgNPs with a like-spherical shape and an average diameter, which ranges from 4 to 25 nm, depending on the AgNO3 concentration used. Then, AgNPs were introduced into the nPSi layer with a mean pore diameter of 46 nm and 75% of porosity by capillary suction. Hybrid layers nPSi/AgNPs were characterized by SEM, XRD, and RBS, confirming that AgNPs were introduced into nPSi layers. The catalytic activity of the hybrid layer in the reduction of organic dyes in water was studied using methylene blue (MB) as a model dye. Experimental results showed a high catalytic activity in comparison with other hybrid systems. The kinetic reduction could be fitted to the first-order equation obtaining the best degradation rate of 8.6 min⁻¹ with AgNPs synthetized with 2 mM of AgNO3. In addition, the reusability of these layers was demonstrated after five cycles, showing promising results for their use in wastewater management.
Reference:
Nelson Naveas, Miguel Manso-Silván, Erico Carmona, Karla Garrido-Miranda, Jacobo Hernandez-Montelongo and Gonzalo Recio Sánchez, “Green synthesized silver nanoparticles decorated on nanostructured porous silicon as an efficient platform for the removal of organic dye methylene blue”, Green Chemistry Letters and Reviews, vol. 15, pp. 106–113.
Bibtex Entry:
@article{naveas_green_2022,
title = {Green synthesized silver nanoparticles decorated on nanostructured porous silicon as an efficient platform for the removal of organic dye methylene blue},
volume = {15},
doi = {10.1080/17518253.2021.2024609},
abstract = {In the present work, nanostructured porous silicon (nPSi) thin films were used as a substrate for the deposition of green synthesized silver nanoparticles (AgNPs). Different kinds of AgNPs were green synthesized by using Peumo extract and changing AgNO3 concentration. UV-vis spectroscopy confirmed the success of the synthesis, and TEM characterization showed AgNPs with a like-spherical shape and an average diameter, which ranges from 4 to 25 nm, depending on the AgNO3 concentration used. Then, AgNPs were introduced into the nPSi layer with a mean pore diameter of 46 nm and 75% of porosity by capillary suction. Hybrid layers nPSi/AgNPs were characterized by SEM, XRD, and RBS, confirming that AgNPs were introduced into nPSi layers. The catalytic activity of the hybrid layer in the reduction of organic dyes in water was studied using methylene blue (MB) as a model dye. Experimental results showed a high catalytic activity in comparison with other hybrid systems. The kinetic reduction could be fitted to the first-order equation obtaining the best degradation rate of 8.6 min⁻¹ with AgNPs synthetized with 2 mM of AgNO3. In addition, the reusability of these layers was demonstrated after five cycles, showing promising results for their use in wastewater management.},
journal = {Green Chemistry Letters and Reviews},
author = {Naveas, Nelson and Manso-Silván, Miguel and Carmona, Erico and Garrido-Miranda, Karla and Hernandez-Montelongo, Jacobo and Recio Sánchez, Gonzalo},
month = jan,
year = {2022},
pages = {106--113},
file = {Full Text PDF:E:\Usuarios\Administrator\Zotero\storage\BI6U8TFB\Naveas et al. - 2022 - Green synthesized silver nanoparticles decorated o.pdf:application/pdf},
}