Are Au Nanoparticles on Oxygen-Free Supports Catalytically Active?
Tóm tắt
Gold nanoparticles (Au NPs) on oxygen-free supports were examined using near ambient pressure X-ray photoelectron spectroscopy under CO oxidation conditions, and ex situ using scanning electron microscopy and transmission electron microscopy. Our observations demonstrate that Au NPs supported on carbon materials are inactive, regardless of the preparation method. Ozone (O3) treatment of carbon supports leads oxygen-functionalization of the supports. When subsequently exposed to a CO feed, CO is oxidized by the functionalized sites of the carbon support via a stoichiometric pathway. Microscopy reveals that the reaction with CO does not change the morphology of the Au NPs. In situ XPS reveals that the O3 treatment gives rise to additional Au 4f and O 1s peaks at binding energies of 85.25–85.6 and 529.4–530 eV, respectively, which are assigned to the presence of Au oxide. A surface oxide phase is formed during the activation of Au NPs supported on Au foil by O3 treatment. However, this phase decomposes in vacuum and the remaining low-coordinative atoms do not have sufficient catalytic properties to oxidize CO, so the size reduction of Au NPs and/or oxidation of Au NPs is not sufficient to activate Au.
Tài liệu tham khảo
Haruta M, Yamada N, Kobayashi T, Iijima S (1989) J Catal 115:301–309
Haruta M, Tsubota S, Kobayashi T, Kageyama H, Genet MJ, Delmon B (1993) J Catal 144:175–192
Haruta M, Daté M (2001) Appl Catal A Gen 222:427–437
Hashmi ASK, Hutchings GJ (2006) Angew Chem Int Ed 45:7896–7936
Laguna OH, Romero-Sarria F, Centeno MA, Odriozola JA (2010) J Catal 276:360–370
Ryabenkova Y, He Q, Miedziak PJ, Dummer NF, Taylor SH, Carley AF, Morgan DJ, Dimitratos N, Willock DJ, Bethell D, Knight DW, Chadwick D, Kiely CJ, Hutchings GJ (2013) Catal Today 203:139–145
Hayashi T, Tanaka K, Haruta M (1998) J Catal 178:566–575
Tripathi AK, Kamble VS, Gupta NM (1999) J Catal 187:332–342
Bär T, Visart de Bocarmé T, Nieuwenhuys BE, Kruse N (2001) Catal Letters 74:127–131
Guillemot D, Borovkov VYu, Kazansky VB, Polisset-Thfoin M, Fraissard J (1997) J Chem Soc Faraday Trans 93:3587–3591
Boccuzzi F, Chiorino A, Manzoli M, Lu P, Akita T, Ichikawa S, Haruta M (2001) J Catal 202:256–267
Chen MS, Goodman DW (2004) Science 306:252–255
Yoon B, Häkkinen H, Landman U, Wörz AS, Antonietti J-M, Abbet S, Judai K, Heiz U (2005) Science 307:403–407
Minicò S, Scirè S, Crisafulli C, Visco AM, Galvagno S (1997) Catal Letters 47:273–276
Demidov DV, Prosvirin IP, Sorokin AM, Rocha T, Knop-Gericke A, Bukhtiyarov VI (2011) Catal Sci Technol 1:1432–1439
Knop-Gericke A, Kleimenov E, Hävecker M, Blume R, Teschner D, Zafeiratos S, Schlögl R, Bukhtiyarov VI, Kaichev VV, Prosvirin IP, Nizovskii AI, Bluhm H, Barinov A, Dudin P, Kiskinova M (2009) Adv Catal 52:213–272
Bluhm H, Hävecker M, Knop-Gericke A, Kleimenov E, Schlögl R, Teschner D, Bukhtiyarov VI, Ogletree DF, Salmeron M (2004) J Phys Chem B 108:14340–14347
Yeh JJ, Lindau I (1985) At Data Nucl Data Tables 32:1–155
Canning NDS, Outka D, Madix RJ (1984) Surf Sci 141:240–254
King DE (1995) J Vac Sci Technol A 13:1247–1253
Koslowski B, Boyen H-G, Wilderotter C, Kästle G, Ziemann P, Wahrenberg R, Oelhafen P (2001) Surf Sci 475:1–10
Weststrate CJ, Lundgren E, Andersen JN, Rienks EDL, Gluhoi AC, Bakker JW, Groot IMN, Nieuwenhuys BE (2009) Surf Sci 603:2152–2157
Desimoni E, Casella GI, Morone A, Salvi AM (1990) Surf Interface Anal 15:627–634
Kundu S, Wang Y, Xia W, Muhler M (2008) J Phys Chem C 112:16869–16878
Witek G, Noeske M, Mestl G, Shaikhutdinov S, Behm RJ (1996) Catal Lett 37:35–39
Tsai H, Hu E, Perng K, Chen M, Wu J-C, Chang Y-S (2003) Surf Sci 537:L447–L450
Juodkazis K, Juodkazyte J, Jasulaitiene V, Lukinskas A, Sebeka B (2000) Electrochem Commun 2:503–507
Dickinson T, Povey AF, Sherwood PMA (1975) J Chem Soc Faraday Trans 71:298–311
Krozer A, Rodahl M (1997) J Vac Sci Technol, A 15:1704–1709
Klyushin AYu, Rocha TCR, Hävecker M, Knop-Gericke A, Schlögl R (2014) Phys Chem Chem Phys 16:7881–7886
Tandon D, Hippo EJ, Marsh H, Sebok E (1997) Carbon 35:35–44
Citrin PH, Wertheim GK, Baer Y (1978) Phys Rev Lett 41:1425–1428
Heimann P, van der Veen JF, Eastman DE (1981) Solid State Commun 38:595–598
Schaefer A, Ragazzon D, Wittstock A, Walle LE, Borg A, Bäumer M, Sandell A (2012) J Phys Chem C 116:4564–4571
Weststrate CJ, Lundgren E, Andersen JN, Rienks EDL, Gluhoi AC, Bakker JW, Groot IMN, Nieuwenhuys BE (2009) Surf Sci 603:2152–2157
Saliba N, Parker DH, Koel BE (1998) Surf Sci 410:270–282
Min BK, Alemozafar AR, Biener MM, Biener J, Friend CM (2005) Top Catal 36:77–90
Klyushin AYu, Greiner MT, Huang X, Lunkenbein T, Li X, Timpe O, Friedrich M, Hävecker M, Knop-Gericke A, Schlögl R (under review) ACS Catalysis