TY - JOUR
T1 - Synthesis of Zinc Oxide Nanoparticles by Ecofriendly Routes
T2 - Adsorbent for Copper Removal From Wastewater
AU - Primo, Julia de O.
AU - Bittencourt, Carla
AU - Acosta, Selene
AU - Sierra-Castillo, Ayrton
AU - Colomer, Jean François
AU - Jaerger, Silvia
AU - Teixeira, Verônica C.
AU - Anaissi, Fauze J.
N1 - Funding Information:
JP thanks CAPES for a graduate scholarship. CB is a Research Associate of the FRS-FNRS, Belgium. The authors are grateful to Ketlyn W. Borth for XRD measurements, Dr. Sueli P. Quináia, and Ms. Mariane Butik for FAAS measurements, and Dr. Rafael Marangoni for the adsorption tests (UNICENTRO).
Funding Information:
JP thanks CAPES for a graduate scholarship. CB is a Research Associate of the FRS-FNRS, Belgium. The authors are grateful to Ketlyn W. Borth for XRD measurements, Dr. Sueli P. Quin?ia, and Ms. Mariane Butik for FAAS measurements, and Dr. Rafael Marangoni for the adsorption tests (UNICENTRO). Funding. This work was supported by CNPq, CAPES, Finep, Funda??o Arauc?ria, and Founds de la Recherche Scientifique (FNRS?No. 2019/V 6/5/006?JG/JN?296). This research used resources of the Brazilian Synchrotron Light Laboratory (LNLS), proposal implemented XRD1 #20190063, line XRD1/LNLS/CNPEM.
Funding Information:
This work was supported by CNPq, CAPES, Finep, Fundação Araucária, and Founds de la Recherche Scientifique (FNRS— No. 2019/V 6/5/006—JG/JN−296). This research used resources of the Brazilian Synchrotron Light Laboratory (LNLS), proposal implemented XRD1 #20190063, line XRD1/LNLS/CNPEM.
Publisher Copyright:
© Copyright © 2020 Primo, Bittencourt, Acosta, Sierra-Castillo, Colomer, Jaerger, Teixeira and Anaissi.
PY - 2020/11/27
Y1 - 2020/11/27
N2 - Zinc Oxide nanoparticles have been synthesized by two simple routes using Aloe vera (green synthesis, route I) or Cassava starch (gelatinization, route II). The XRD patterns and Raman spectra show that both synthesis routes lead to single-phase ZnO. XPS results indicate the presence of zinc atoms with oxidation state Zn2+. SEM images of the ZnO nanoparticles synthesized using Cassava starch show the presence of pseudo-spherical nanoparticles and nanosheets, while just pseudo-spherical nanoparticles were observed when Aloe vera was used. The UV-Vis spectra showed a slight difference in the absorption edge of the ZnO particles obtained using Aloe vera (3.18 eV) and Cassava starch (3.24 eV). The ZnO nanoparticles were tested as adsorbents for the removal of copper in wastewater, it is shown that at low Cu2+ ion concentration (~40 mg/L) the nanoparticles synthesized by both routes have the same removal efficiency, however, increasing the absorbate concentration (> 80 mg/L) the ZnO nanoparticles synthesized using Aloe vera have a higher removal efficiency. The synthesized ZnO nanoparticles can be used as effective and environmental-friendly metal trace absorbers in wastewater.
AB - Zinc Oxide nanoparticles have been synthesized by two simple routes using Aloe vera (green synthesis, route I) or Cassava starch (gelatinization, route II). The XRD patterns and Raman spectra show that both synthesis routes lead to single-phase ZnO. XPS results indicate the presence of zinc atoms with oxidation state Zn2+. SEM images of the ZnO nanoparticles synthesized using Cassava starch show the presence of pseudo-spherical nanoparticles and nanosheets, while just pseudo-spherical nanoparticles were observed when Aloe vera was used. The UV-Vis spectra showed a slight difference in the absorption edge of the ZnO particles obtained using Aloe vera (3.18 eV) and Cassava starch (3.24 eV). The ZnO nanoparticles were tested as adsorbents for the removal of copper in wastewater, it is shown that at low Cu2+ ion concentration (~40 mg/L) the nanoparticles synthesized by both routes have the same removal efficiency, however, increasing the absorbate concentration (> 80 mg/L) the ZnO nanoparticles synthesized using Aloe vera have a higher removal efficiency. The synthesized ZnO nanoparticles can be used as effective and environmental-friendly metal trace absorbers in wastewater.
KW - aloe vera
KW - copper ion
KW - starch
KW - water treatment
KW - zinc oxide
UR - http://www.scopus.com/inward/record.url?scp=85097620687&partnerID=8YFLogxK
U2 - 10.3389/fchem.2020.571790
DO - 10.3389/fchem.2020.571790
M3 - Article
C2 - 33330360
AN - SCOPUS:85097620687
SN - 2296-2646
VL - 8
SP - 571790
JO - Frontiers in Chemistry
JF - Frontiers in Chemistry
M1 - 571790
ER -