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Controlled Synthesis of Cu and Cu2O NPs and Incorporation of Octahedral Cu2O NPs in Cellulose II Films
Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering. FSCN. (Surface and Colloid Engineering)ORCID iD: 0000-0001-6270-2970
Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering. FSCN. (Surface and Colloid Engineering)ORCID iD: 0000-0003-3407-7973
Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering. FSCN. (Surface and Colloid Engineering)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering. FSCN. (Surface and Colloid Engineering)ORCID iD: 0000-0002-5579-3373
2018 (English)In: Nanomaterials, ISSN 2079-4991, Vol. 8, no 4, article id 238Article in journal (Refereed) Published
Abstract [en]

In this study, Cu and Cu2O nanoparticles (NPs) were synthesized through chemical reduction of soluble copper-chelating ligand complexes using formaldehyde as a reducing agent. The influence of various chelating ligands, such as ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), and a surface-active derivative of DTPA (C12-DTPA), as well as surfactants (i.e., hexadecyltrimethylammonium bromide (CTAB), dodecyltrimethylammonium chloride (DoTAC), sodium dodecyl sulfate (SDS), and dimethyldodecylamine-N-oxide (DDAO)), on morphology and the composition of produced NPs was investigated. In the absence of surfactants, spherical copper particles with polycrystalline structure could be obtained. X-ray diffraction (XRD) analysis revealed that, in the presence of EDTA, the synthesized NPs are mainly composed of Cu with a crystallite size on the order of 35 nm, while with DTPA and C12-DTPA, Cu2O is also present in the NPs as a minority phase. The addition of ionic surfactants to the copper–EDTA complex solution before reduction resulted in smaller spherical particles, mainly composed of Cu. However, when DDAO was added, pure Cu2O nano-octahedrons were formed, as verified by high-resolution scanning electron microscopy (HR-SEM) and XRD. Furthermore, a hybrid material could be successfully prepared by mixing the octahedral Cu2O NPs with cellulose dissolved in a LiOH/urea solvent system, followed by spin-coating on silica wafers. It is expected that this simple and scalable route to prepare hybrid materials could be applied to a variety of possible applications.

Place, publisher, year, edition, pages
2018. Vol. 8, no 4, article id 238
Keyword [en]
copper nanoparticles; cuprous oxide nano-octahedrons; hybrid material; regenerated cellulose; chemical reduction; chelating agent; surfactant
National Category
Nano Technology Chemical Engineering Materials Engineering
Identifiers
URN: urn:nbn:se:miun:diva-33497DOI: 10.3390/nano8040238Scopus ID: 2-s2.0-85045875998OAI: oai:DiVA.org:miun-33497DiVA, id: diva2:1197924
Available from: 2018-04-16 Created: 2018-04-16 Last updated: 2018-05-23Bibliographically approved

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Publisher's full textScopushttp://www.mdpi.com/2079-4991/8/4/238/htm

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Eivazihollagh, AlirezaNorgren, MagnusDahlström, ChristinaEdlund, Håkan

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