2
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      Thermal Conductivity and Stability of Hydrocarbon-Based Nanofluids with Palladium Nanoparticles Dispersed by Modified Hyperbranched Polyglycerol

      research-article

      Read this article at

      ScienceOpenPublisherPMC
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Palladium nanoparticles, which were prepared by modified hyperbranched polyglycerol (mHPG) as stabilizers, can be dispersed well in nonpolar organic solvents and form highly stable nanofluids. The influences of three mHPG products modified with cyclohexanethiol (CSHPG), dodecanethiol (DSHPG), and octadecanethiol (OSHPG) on the preparation and stability of the palladium nanoparticles were investigated. The stability and thermal conductivity enhancement of the hydrocarbon-based nanofluids with Pd@mHPG (Pd@CSHPG, Pd@DSHPG, and Pd@OSHPG) compared to the corresponding base fluid were investigated at different temperatures. The average diameters of nanoparticles stabilized by CSHPG, DSHPG, and OSHPG are within 2.7–3.6 nm. The palladium nanoparticles could be dispersed well in the nonpolar base fluid such as decalin. The nanofluids with Pd@DSHPG and Pd@OSHPG could remain stable for up to 330 days at room temperature. The nanofluid with Pd@DSHPG or Pd@OSHPG could be stable for more than 24 h at 110 °C. The thermal conductivity of the nanofluids improved with increasing temperature and the mass fraction of nanoparticles compared to the corresponding base fluid. The long alkyl chain-modified HPG can give better protection for nanoparticles from agglomeration and assist metal nanoparticles in enhancing the thermal conductivity of nanofluids.

          Related collections

          Most cited references37

          • Record: found
          • Abstract: not found
          • Article: not found

          Synthesis of thiol-derivatised gold nanoparticles in a two-phase Liquid–Liquid system

            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Controlled Synthesis of Hyperbranched Polyglycerols by Ring-Opening Multibranching Polymerization

              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Experimental determination of thermal conductivity of three nanofluids and development of new correlations

                Bookmark

                Author and article information

                Journal
                ACS Omega
                ACS Omega
                ao
                acsodf
                ACS Omega
                American Chemical Society
                2470-1343
                23 November 2020
                08 December 2020
                : 5
                : 48
                : 31156-31163
                Affiliations
                []School of Material and Chemical Engineering, Zhengzhou University of Light Industry , Zhengzhou, Henan Province 450000, China
                []State Key Laboratory of Heavy Oil Processing, College of New Energy and Materials, Beijing Key Laboratory of Biogas Upgrading Utilization, China University of Petroleum Beijing , Beijing 102249, China
                [§ ]Department of Chemistry, Zhejiang University , Hangzhou, Zhejiang Province 310027, China
                Author notes
                Article
                10.1021/acsomega.0c04315
                7726954
                89d0fd6c-a5fd-40d8-8262-573f181d336d
                © 2020 American Chemical Society

                This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License, which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes.

                History
                : 03 September 2020
                : 12 November 2020
                Categories
                Article
                Custom metadata
                ao0c04315
                ao0c04315

                Comments

                Comment on this article