Ligand removal from supported nanocrystals by room temperature ozone treatment and evolution of surface coordination state
Source abstract
Abstract
Removal of capping ligands on metal nanocrystals (NCs) is important for studying structure-property relationship with supported NCs. Herein, we demonstrate a room temperature ozone treatment to remove poly(N-vinyl-2-pyrrolidone) (PVP) and poly(vinyl alcohol) (PVA) on metal NCs. With Fourier transform infrared spectroscopy of CO as a probe molecule (CO-FTIR) method, the changes of surface coordination numbers on Pt NCs during ozone treatment and thermal calcination are probed. A room temperature ozone treatment method was used to remove PVP on Pt NCs and PVA on Au NCs. Compared with thermal calcination, ozone treatment can preserve the particle size of Pt and Au. CO-FTIR is used to characterize the evolution of the surface coordination state of Pt NCs during ozone treatment or thermal calcination. Little changes of Pt coordination numbers occur during ozone treatment, while a significant proportion of well-coordinated (WC; terraces) sites develop during thermal calcination. Ozone treatment is advantageous in maintaining the size and surface coordination state of metal NCs during ligand removal for further investigation of structure-property relationship.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nanomaterials for catalytic reactions · Gold and Silver Nanoparticles Synthesis and Applications · Electrocatalysts for Energy Conversion
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
Show source-provided references
1. Aliaga C, Park JY, Yamada Y, Lee HS, Tsung C, Yang P, Somorjai GA (2009) Sum frequency generation and catalytic reaction studies of the removal of organic capping agents from Pt nanoparticles by UV−Ozone treatment. J Phys Chem C 113:6150–6155. https://doi.org/10.1021/jp810894610.1021/jp8108946 ↗
2. An K, Somorjai GA (2012) Size and shape control of metal nanoparticles for reaction selectivity in catalysis. ChemCatChem 4:1512–1524. https://doi.org/10.1002/cctc.20120022910.1002/cctc.201200229 ↗
3. Ansar SM, Ameer FS, Hu W, Zou S, Pittman CU, Zhang D (2013) Removal of molecular adsorbates on gold nanoparticles using sodium borohydride in water. Nano Lett 13:1226–1229. https://doi.org/10.1021/nl304703w10.1021/nl304703w ↗
4. Blavo SO, Qayyum E, Baldyga LM, Castillo VA, Sanchez MD, Warrington K, Barakat MA, Kuhn JN (2013) Verification of organic capping agent removal from supported colloidal synthesized Pt nanoparticle catalysts. Top Catal 56:1835–1842. https://doi.org/10.1007/s11244-013-0120-410.1007/s11244-013-0120-4 ↗
5. Blout ER, Karplus R (1948) The infrared spectrum of polyvinyl alcohol. J Am Chem Soc 70:862–864. https://doi.org/10.1021/ja01182a50410.1021/ja01182a504 ↗
6. Blyholder G (1964) Molecular orbital view of chemisorbed carbon monoxide. J Phys Chem 68:2772–2777. https://doi.org/10.1021/j100792a00610.1021/j100792a006 ↗
7. Borodko Y, Habas SE, Koebel M, Yang PD, Frei H, Somorjai GA (2006) Probing the interaction of poly(vinylpyrrolidone) with platinum nanocrystals by UV - Raman and FTIR. J Phys Chem B 110:23052–23059. https://doi.org/10.1021/jp06333810.1021/jp063338 ↗
8. Cargnello M (2019) Colloidal nanocrystals as building blocks for well-defined heterogeneous catalysts. Chem Mater 31:576–596. https://doi.org/10.1021/acs.chemmater.8b0453310.1021/acs.chemmater.8b04533 ↗
9. Cargnello M, Chen C, Diroll BT, Doan-Nguyen VVT, Gorte RJ, Murray CB (2015) Efficient removal of organic ligands from supported nanocrystals by fast thermal annealing enables catalytic studies on well-defined active phases. J Am Chem Soc 137:6906–6911. https://doi.org/10.1021/jacs.5b0333310.1021/jacs.5b03333 ↗
10. Crespo-Quesada M, Andanson JM, Yarulin A, Lim B, Xia YN, Kiwi-Minsker L (2011) UV-ozone cleaning of supported poly(vinylpyrrolidone)-stabilized palladium nanocubes: Effect of stabilizer removal on morphology and catalytic behavior. Langmuir 27:7909–7916. https://doi.org/10.1021/la201007m10.1021/la201007m ↗
11. de Me Norval L, Chaqroune A, Coq B, François Figueras A (1997) Characterization of mono- and bi-metallic platinum catalysts using CO FTIR spectroscopy size effects and topological segregation. J Chem Soc Faraday Trans 93:3715–3720. https://doi.org/10.1039/a702174g10.1039/a702174g ↗
12. Hadjiivanov KI, Vayssilov GN (2002) Characterization of oxide surfaces and zeolites by carbon monoxide as an IR probe molecule. Adv Catal 47:307–51110.1016/S0360-0564(02)47008-3 ↗
13. Kale MJ, Christopher P (2016) Utilizing quantitative in situ FTIR spectroscopy to identify well-coordinated Pt atoms as the active site for CO oxidation on Al2O3 supported Pt catalysts. ACS Catal 6:5599–5609. https://doi.org/10.1021/acscatal.6b0112810.1021/acscatal.6b01128 ↗
14. Kilmartin J, Sarip R, Grau-Crespo R, Di Tommaso D, Hogarth G, Prestipino C, Sankar G (2012) Following the creation of active gold nanocatalysts from phosphine-stabilized molecular clusters. ACS Catal 2:957–963. https://doi.org/10.1021/cs200626310.1021/cs2006263 ↗
15. Konuspayeva Z, Afanasiev P, Nguyen TS, Di Felice L, Morfin F, Nguyen NT, Nelayah J, Ricolleau C, Li ZY, Yuan J, Berhault G, Piccolo L (2015) Au-Rh and Au-Pd nanocatalysts supported on rutile titania nanorods: Structure and chemical stability. Phys Chem Chem Phys 17:28112–28120. https://doi.org/10.1039/c5cp00249d10.1039/c5cp00249d ↗
16. Krimm S, Liang CY, Sutherland GBBM (1956) Infrared spectra of high polymers. V. Polyvinyl alcohol. J Polym Sci 22:227–247. https://doi.org/10.1002/pol.1956.120221010610.1002/pol.1956.1202210106 ↗
17. Kuhn JN, Tsung C, Huang WY, Somorjai GA (2009) Effect of organic capping layers over monodisperse platinum nanoparticles upon activity for ethylene hydrogenation and carbon monoxide oxidation. J Catal 265:209–215. https://doi.org/10.1016/j.jcat.2009.05.00110.1016/j.jcat.2009.05.001 ↗
18. Li DG, Wang C, Tripkovic D, Sun SH, Markovic NM, Stamenkovic VR (2012) Surfactant removal for colloidal nanoparticles from solution synthesis: the effect on catalytic performance. ACS Catal 2:1358–1362. https://doi.org/10.1021/cs300219j10.1021/cs300219j ↗
19. Liu AN, Liu X, Liu LC, Pu Y, Guo K, Tan W, Gao S, Luo YD, Yu SH, Si R, Shan B, Gao F, Dong L (2019) Getting insights into the temperature-specific active sites on platinum nanoparticles for CO oxidation: A combined in situ spectroscopic and ab initio density functional theory study. ACS Catal 9:7759–7768. https://doi.org/10.1021/acscatal.9b0255210.1021/acscatal.9b02552 ↗
20. Lopez-Sanchez JA, Dimitratos N, Hammond C, Brett GL, Kesavan L, White S, Miedziak P, Tiruvalam R, Jenkins RL, Carley AF, Knight D, Kiely CJ, Hutchings GJ (2011) Facile removal of stabilizer-ligands from supported gold nanoparticles. Nat Chem 3:551–556. https://doi.org/10.1038/nchem.106610.1038/nchem.1066 ↗
21. Mazumder V, Sun S (2009) Oleylamine-mediated synthesis of Pd nanoparticles for catalytic formic acid oxidation. J Am Chem Soc 131:4588–4589. https://doi.org/10.1021/ja900491510.1021/ja9004915 ↗
22. Meira DM, Ribeiro RU, Mathon O, Pascarelli S, Bueno JMC, Zanchet D (2016) Complex interplay of structural and surface properties of ceria on platinum supported catalyst under water gas shift reaction. Appl Catal B Environ 197:73–85. https://doi.org/10.1016/j.apcatb.2016.04.02510.1016/j.apcatb.2016.04.025 ↗
23. Naresh N, Wasim FGS, Ladewig BP, Neergat M (2013) Removal of surfactant and capping agent from Pd nanocubes (Pd-NCs) using tert-butylamine: Its effect on electrochemical characteristics. J Mater Chem A 1:8553–8559. https://doi.org/10.1039/c3ta11183k10.1039/c3ta11183k ↗
24. Rioux RM, Song H, Hoefelmeyer JD, Yang P, Somorjai GA (2005) High-surface-area catalyst design: Synthesis, characterization, and reaction studies of platinum nanoparticles in mesoporous SBA-15 silica†. J Phys Chem B 109:2192–2202. https://doi.org/10.1021/jp048867x10.1021/jp048867x ↗
25. Sonstrom P, Arndt D, Wang X, Zielasek V, Baumer M (2011) Ligand capping of colloidally synthesized nanoparticles--a way to tune metal-support interactions in heterogeneous gas-phase catalysis. Angew Chem Int Ed 50:3888–3891. https://doi.org/10.1002/anie.20100457310.1002/anie.201004573 ↗
26. Vig JR (1985) UV/ozone cleaning of surfaces. J Vac Sci Technol A 3:1027–1034. https://doi.org/10.1116/1.57311510.1116/1.573115 ↗
27. Wang ZL, Petroski JM, Green TC, El-Sayed MA (1998) Shape transformation and surface melting of cubic and tetrahedral platinum nanocrystals. J Phys Chem B 102:6145–6151. https://doi.org/10.1021/jp981594j10.1021/jp981594j ↗
28. Wang Y, Ren JW, Deng K, Gui LL, Tang YQ (2000) Preparation of tractable platinum, rhodium, and ruthenium nanoclusters with small particle size in organic media. Chem Mater 12:1622–1627. https://doi.org/10.1021/cm000085310.1021/cm0000853 ↗
29. Yu R, Song H, Zhang XF, Yang PD (2005) Thermal wetting of platinum nanocrystals on silica surface. J Phys Chem B 109:6940–6943. https://doi.org/10.1021/jp050973r10.1021/jp050973r ↗
30. Zhang J, Wang H, Wang L, Ali S, Wang CT, Wang LX, Meng XJ, Li B, Su DS, Xiao FS (2019) Wet-chemistry strong metal-support interactions in titania-supported Au catalysts. J Am Chem Soc 141:2975–2983. https://doi.org/10.1021/jacs.8b1086410.1021/jacs.8b10864 ↗
31. Zhong RY, Sun KQ, Hong YC, Xu BQ (2014) Impacts of organic stabilizers on catalysis of Au nanoparticles from colloidal preparation. ACS Catal 4:3982–3993. https://doi.org/10.1021/cs501161c10.1021/cs501161c ↗
32. Zhong RY, Yang JW, Hu Z, Xu BQ (2019) Removal of residual poly(vinylpyrrolidone) from gold nanoparticles immobilized on SiO2 by ultraviolet-ozone treatment. ACS Appl Nano Mater 2:5720–5729. https://doi.org/10.1021/acsanm.9b0119710.1021/acsanm.9b01197 ↗