Cu₂O nanoparticles for the degradation of methyl parathion

• Juan Rizo,
• David Díaz,
• Benito Reyes-Trejo and
• M. Josefina Arellano-Jiménez

Beilstein J. Nanotechnol. 2020, 11, 1546–1555, doi:10.3762/bjnano.11.137

• . Keywords: copper(I) oxide (Cu2O); Cu2O nanoparticles; degradation; methyl parathion; surface basicity; Introduction Organophosphorus pesticides (OPPs) are one of many kinds of pesticides that have attracted some attention mainly due to their neurotoxic effect [1][2][3]. The primary mechanism of action of

• deionized water. Preparation of Cu2O NPs For the preparation of Cu2O nanoparticles Benedict’s reagent was used [35], with the variation of a water/dimethyl sulfoxide (DMSO) solvent mixture in order to obtain different NPs sizes. The modified Benedict’s reagent was prepared as follows: In 50 mL of distilled

• triesters such as fenitrothion or diazinon. Research regarding this matter is in progress. Conclusion Cu2O nanoparticles were used for the first time in the hydrolytic degradation of methyl parathion, the most neurotoxic organophosphate pesticide used to date. The surface basicity of copper(I) oxide in the

Cr(VI) remediation from aqueous environment through modified-TiO₂-mediated photocatalytic reduction

• Rashmi Acharya,
• Brundabana Naik and
• Kulamani Parida

Beilstein J. Nanotechnol. 2018, 9, 1448–1470, doi:10.3762/bjnano.9.137

• water [165]. Upon increasing the content of Cu2O in TiO2/Cu2O nanocomposites, photoreduction increased and reached a maximum for 30% Cu2O. This is because 30% Cu2O might be an appropriate amount for the formation of a p–n junction between TiO2 and Cu2O nanoparticles, which could efficiently separate

Development of highly faceted reduced graphene oxide-coated copper oxide and copper nanoparticles on a copper foil surface

• Rebeca Ortega-Amaya,
• Yasuhiro Matsumoto,
• Andrés M. Espinoza-Rivas,
• Manuel A. Pérez-Guzmán and
• Mauricio Ortega-López

Beilstein J. Nanotechnol. 2016, 7, 1010–1017, doi:10.3762/bjnano.7.93

• the particle size and shape strongly depend on the process temperature. Characterization with transmission electron microscopy and scanning electron microscopy indicates that Cu or Cu2O nanoparticles take rGO sheets from the rGO network to form core–shell Cu–rGO or Cu2O–rGO nanostructures. It is noted

• using a copper foil as the GO support. It was found that the final product consisted of rGO sheets decorated with Cu or Cu2O nanoparticles. To explain the presence of unoxidized Cu nanoparticles it was suggested that rGO sheets might coat Cu to prevent oxidation [18]. The present work reports further

• forming a native copper oxide layer (CuxO) and carbonaceous species as adsorbed impurities. The inset of Figure 1b shows a TEM image of nanoparticles grown at 80 °C. After being detached and analyzed by TEM, it was seen that well-crystallized Cu2O nanoparticles developed during the annealing at 80 °C