Alkyl-capped copper oxide nanospheres and nanoprolates for sustainability: water treatment and improved lubricating performance. Issue 1 (31st December 2019)

• Record Type: Journal Article
• Authors: Chimeno-Trinchet, Christian; Fernández-González, Alfonso; García Calzón, Josefa Ángela; Díaz-García, Marta Elena; Badía Laíño, Rosana
• Is Part Of: Science and technology of advanced materials. Volume 20:Issue 1(2019)
• Page Start: 657
• Page End: 672
• Publication Date: 2019-12-31
• Subjects: CuO nanoparticles -- superficial functionalization -- oil medium -- tribological properties -- lubricant additive -- dye-remover additive; 60 New topics / Others: Nanoparticles -- 301 Chemical syntheses / processing -- 500 Characterization -- 503 TEM, STEM, SEM -- 200 Applications; Materials -- Technological innovations -- Periodicals; 620.112
• DOI: 10.1080/14686996.2019.1621683
• Languages: English
• ISSNs: 1468-6996

Abstract

ABSTRACT: Metal oxide nanoparticles of different nature have been used in different fields such as therapeutics, biomarkers, tribology or environmental remediation, among others. Besides, the surface modification of such nanoparticles is of particular interest to bring designed functions. In this paper we describe the synthesis of CuO nanoparticles with two different geometries (spherical and prolate) and decorated with long alkyl chains in order to use as dye removers by adsorption and/or photo-degradation of a persistent model dye (Congo Red) and as lubricant additives to improve the tribological performance of base lubricant oils. Alkyl-functionalized CuO nanoparticles demonstrated a high stability in oily suspensions and an improvement in the friction reducing the CoF ca. 26%; the alkyl-decorated nanoparticles showed also higher adsorption kinetics for Congo Red than the neat ones following a pseudo-second-order trend, although with lower adsorption efficiency. The synthesis, surface modification and physic-chemical characterization of spherical and prolate CuO nanoparticles are described as well as their applications as lubricant additives and Congo Red photocatalytic removal. GRAPHICAL ABSTRACT: uf0001