PMID- 35454550 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230308 IS - 1996-1944 (Print) IS - 1996-1944 (Electronic) IS - 1996-1944 (Linking) VI - 15 IP - 8 DP - 2022 Apr 13 TI - Synthesis of Ni/Y(2)O(3) Nanocomposite through USP and Lyophilisation for Possible Use as Coating. LID - 10.3390/ma15082856 [doi] LID - 2856 AB - The Ni/Y2O3 catalyst showed high catalytic activity. Based on this, the aim of this study was to create Ni/Y2O3 nanocomposites powder with two innovative technologies, Ultrasonic Spray Pyrolysis (USP) and lyophilisation. In the USP process, thermal decomposition of the generated aerosols in an N2/H2 reduction atmosphere caused a complete decomposition of the nickel (II) nitrate to elemental Ni, which became trapped on the formed Y2O3 nanoparticles. The Ni/Y2O3 nanocomposite particles were captured via gas washing in an aqueous solution of polyvinylpyrrolidone (PVP) in collection bottles. PVP was chosen for its ability to stabilise nano-suspensions and as an effective cryoprotectant. Consequently, there was no loss or agglomeration of Ni/Y2O3 nanocomposite material during the lyophilisation process. The Ni/Y2O3 nanocomposite powder was analysed using ICP-MS, SEM-EDX, and XPS, which showed the impact of different precursor concentrations on the final Ni/Y2O3 nanocomposite particle composition. In a final step, highly concentrated Ni/Y2O3 nanocomposite ink (Ni/Y2O3 > 0.140 g/mL) and test coatings from this ink were prepared by applying them on a white matte photo paper sheet. The reflection curve of the prepared Ni/Y2O3 nanocomposite coating showed a local maximum at 440 nm with a value of 39% reflection. Given that Ni is located on the surface of the Ni/Y2O3 nanocomposite in the elemental state and according to the identified properties, tests of the catalytic properties of this coating will be performed in the future. FAU - Svarc, Tilen AU - Svarc T AD - Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia. FAU - Stopic, Srecko AU - Stopic S AD - Process Metallurgy and Metal Recycling, RWTH Aachen University, Intzestrasse 3, 52056 Aachen, Germany. FAU - Jelen, Ziga AU - Jelen Z AD - Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia. FAU - Zadravec, Matej AU - Zadravec M AUID- ORCID: 0000-0002-8749-8715 AD - Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia. FAU - Friedrich, Bernd AU - Friedrich B AUID- ORCID: 0000-0002-2934-2034 AD - Process Metallurgy and Metal Recycling, RWTH Aachen University, Intzestrasse 3, 52056 Aachen, Germany. FAU - Rudolf, Rebeka AU - Rudolf R AUID- ORCID: 0000-0003-0510-5752 AD - Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia. LA - eng GR - Grant number P2-0120 (B) - Technologies of metastable materials, P2-0196 (B) - Research in Pow-er, Process and Environmental Engineering and by Bilateral Project Slovenia-Germany BI-DE/21-22-010./Slovenian Research Agency/ PT - Journal Article DEP - 20220413 PL - Switzerland TA - Materials (Basel) JT - Materials (Basel, Switzerland) JID - 101555929 PMC - PMC9028117 OTO - NOTNLM OT - Ni/Y2O3 nanocomposite OT - Ultrasonic Spray Pyrolysis (USP) OT - characterisation OT - coating OT - lyophilisation COIS- The authors declare no conflict of interest. EDAT- 2022/04/24 06:00 MHDA- 2022/04/24 06:01 PMCR- 2022/04/13 CRDT- 2022/04/23 01:04 PHST- 2022/02/26 00:00 [received] PHST- 2022/04/04 00:00 [revised] PHST- 2022/04/11 00:00 [accepted] PHST- 2022/04/23 01:04 [entrez] PHST- 2022/04/24 06:00 [pubmed] PHST- 2022/04/24 06:01 [medline] PHST- 2022/04/13 00:00 [pmc-release] AID - ma15082856 [pii] AID - materials-15-02856 [pii] AID - 10.3390/ma15082856 [doi] PST - epublish SO - Materials (Basel). 2022 Apr 13;15(8):2856. doi: 10.3390/ma15082856.