Solventless synthesis of iridium(0) nanoparticles
Source abstract
Abstract
In this article, we present the results of a solvent-free synthesis of iridium(0) nanoparticles, both water washed and unwashed. IrCl3 and NaBH4, as starting materials, are mixed using an agate mortar and milled for 15 min until a black powder is obtained, which is heated in a nitrogen-controlled atmosphere oven at 200 °C for 2 h. If the product of the reaction is not washed before heating, NaBH4 and IrO2 impurities are observed. On the other hand, if the reaction product is washed before the heating, the obtained powder is free of impurities. We study the effect of the variation in reducing agent concentration and the annealing temperature used after the reaction. In all cases, the calculated particle size is less than 10 nm.
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Research context
OpenAlex topics: Surface Chemistry and Catalysis · Nanomaterials for catalytic reactions · Microwave-Assisted Synthesis and Applications
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References (23)
Show source-provided references
1. Aiken JD, Finke RG (1999) Polyoxoanion- and tetrabutylammonium-stabilized Rh(0) n nanoclusters: unprecedented nanocluster catalytic lifetime in solution. J Am Chem Soc 121(38):8803–8810. doi: 10.1021/ja991034d10.1021/ja991034d ↗
2. Astruc D, Lu F, Ruiz J (2005) Nanoparticles as recyclable catalysts: the frontier between homogeneous and heterogeneous catalysis. Angew Chem 44(48):7852–7872. doi: 10.1002/anie.20050076610.1002/anie.200500766 ↗
3. Birss VI, Andreas H, Serebrennikova I, Elzanowska H (1999) Electrochemical characterization of sol–gel formed Ir metal nanoparticles. Electrochem Solid State Lett 2(7):326–329. doi: 10.1149/1.139082510.1149/1.1390825 ↗
4. Chung YM, Rhee HK (2004) Synthesis and catalytic applications of dendrimer-templated bimetallic nanoparticles. Cat Surv Asia 8(3):211–223. doi: 10.1023/B:CATS.0000038539.86680.3d10.1023/B:CATS.0000038539.86680.3d ↗
5. Delogu F, Orrù R, Cao G (2003) A novel macrokinetic approach for mechanochemical reactions. Chem Eng Sci 58(3–6):815–821. doi: 10.1016/S0009-2509(02)00612-710.1016/S0009-2509(02)00612-7 ↗
6. Ennas G, Marongiu G, Marras S, Piccaluga G (2004) Mechanochemical route for the synthesis of cobalt ferrite–silica and iron–cobalt alloy–silica nanocomposites. J Nanopart Res 6(1):99–105. doi: 10.1023/B:NANO.0000023203.38573.da10.1023/B:NANO.0000023203.38573.da ↗
7. Fonseca SG, Umpierre AP, Fichtner PFP, Teixeira SR, Dupont J (2003) The use of imidazolium ionic liquids for the formation and stabilization of Ir0 and Rh0 nanoparticles: efficient catalysts for the hydrogenation of arenes. Chem A Eur J 9(14):3263–3269. doi: 10.1002/chem.20030475310.1002/chem.200304753 ↗
8. Ivanov E, Suryanarayana C (2000) Materials and process design through mechanochemical routes. J Mater Synth Process 8(3–4):235–244. doi: 10.1023/A:101137231217210.1023/A:1011372312172 ↗
9. Krämer J, Redel E, Thomann R, Janiak C (2008) Use of ionic liquids for the synthesis of iron, ruthenium, and osmium nanoparticles from their metal carbonyl precursors. Organometallics 27(9):1976–1978. doi: 10.1021/om800056z10.1021/om800056z ↗
10. Liao PC, Chen CS, Ho WS, Huang YS, Tiong KK (1997) Characterization of IrO2 thin films by Raman spectroscopy. Thin Solid Films 301(1–2):7–11. doi: 10.1016/S0040-6090(96)09545-410.1016/S0040-6090(96)09545-4 ↗
11. López-De Jesús YM, Vicente A, Lafaye G, Marécot P, ChT Williams (2008) Synthesis and characterization of dendrimer-derived supported iridium catalysts. J Phys Chem C 112(36):13837–13845. doi: 10.1021/jp800152f10.1021/jp800152f ↗
12. Mévellec V, Roucoux A, Ramirez E, Philippot K, Chaudret B (2004) Surfactant-stabilized aqueous iridium(0) colloidal suspension: an efficient reusable catalyst for hydrogenation of arenes in biphasic media. Adv Synth Catal 346(1):72–76. doi: 10.1002/adsc.20030315710.1002/adsc.200303157 ↗
13. Miyao T, Minoshima K, Sh Naito (2005) Remarkable hydrogen occlusion ability of hollow Ir–SiO2 nanoparticles prepared by reversed micelle techniques. J Mater Chem 15:2268–2270. doi: 10.1039/B504267D10.1039/b504267d ↗
14. Ott LS, Finke RG (2007) Transition-metal nanocluster stabilization for catalysis: a critical review of ranking methods and putative stabilizers. Coord Chem Rev 251(9–10):1075–1100. doi: 10.1016/j.ccr.2006.08.01610.1016/j.ccr.2006.08.016 ↗
15. Pan C, Pelzer K, Philippot K, Chaudret B, Dassenoy F, Lecante P, Casanove MJ (2001) Ligand-stabilized ruthenium nanoparticles: synthesis, organization, and dynamics. J Am Chem Soc 123(31):7584–7593. doi: 10.1021/ja003961m10.1021/ja003961m ↗
16. Patterson AL (1939) The Scherrer formula for X-ray particle size determination. Phys Rev 56(10):978–982. doi: 10.1103/PhysRev.56.97810.1103/PhysRev.56.978 ↗
17. Redel E, Krämer J, Thomann R, Janiak Ch (2009) Synthesis of Co, Rh and Ir nanoparticles from metal carbonyls in ionic liquids and their use as biphasic liquid–liquid hydrogenation nanocatalysts for cyclohexene. J Organomet Chem 694(7–8):1069–1075. doi: 10.1016/j.jorganchem.2008.09.05010.1016/j.jorganchem.2008.09.050 ↗
18. Redel E, Walter M, Thomann R, Hussein L, Krüger M, Janiak C (2010) Stop-and-go, stepwise and ligand free nucleation, nanocrystal growth and formation of Au-NPs in ionic liquids (ILs). Chem Commun 46(7):1159–1161. doi: 10.1039/b921744d10.1039/b921744d ↗
19. Šepelák V, Feldhoff A, Heitjans P, Krumeich F, Menzel D, Litterst FJ, Bergmann I, Becker KD (2006) Nonequilibrium cation distribution, canted spin arrangement, and enhanced magnetization in nanosized MgFe2O4 prepared by a one-step mechanochemical route. Chem Mater 18(13):3057–3067. doi: 10.1021/cm051489410.1021/cm0514894 ↗
20. Vollmer C, Redel E, Abu-Shandi K, Thomann R, Manyar H, Hardacre C, Janiak C (2010) Microwave irradiation for the facile synthesis of transition-metal nanoparticles (NPs) in ionic liquids (ILs) from metal-carbonyl precursors and Ru-, Rh-, and Ir-NP/IL dispersions as biphasic liquid–liquid hydrogenation nanocatalysts for cyclohexene. Chem A Eur J 16(12):3849–3858. doi: 10.1002/chem.20090321410.1002/chem.200903214 ↗
21. Warren BE (1940) X-ray diffraction study of the structure of glass. Chem Rev 26(2):237–255. doi: 10.1021/cr60084a00710.1021/cr60084a007 ↗
22. Yang H, Zhang X, Tang A (2006) Mechanosynthesis and gas-sensing properties of In2O3/SnO2 nanocomposites. Nanotechnology 17:2860–2864. doi: 10.1088/0957-4484/17/12/00610.1088/0957-4484/17/12/006 ↗
23. Yee H, Scott RWJ, Crooks RM (2004) Synthesis, characterization, and surface immobilization of platinum and palladium nanoparticles encapsulated within amine-terminated poly(amidoamine) dendrimers. Langmuir 20(7):2915–2920. doi: 10.1021/la036106010.1021/la0361060 ↗