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Two-dimensional (2D) materials such as graphene and hexagonal boron nitride (h-BN) can be used as robust and flexible encapsulation overlayers, which effectively protect metal cores but allow reactions to occur between inner cores and outer shells. Here, we demonstrate this concept by showing that Pt@h-BN core–shell nanocatalysts present enhanced performances in H2/O2 fuel cells. Electrochemical (EC) tests combined with operando EC-Raman characterizations were performed to monitor the reaction process and its intermediates, which confirm that Pt-catalyzed electrocatalytic processes happen under few-layer h-BN covers. The confinement effect of the h-BN shells prevents Pt nanoparticles from aggregating and helps to alleviate the CO poisoning problem. Accordingly, embedding nanocatalysts within ultrathin 2D material shells can be regarded as an effective route to design high-performance electrocatalysts.
Hunt, S. T.; Milina, M.; Alba-Rubio, A. C.; Hendon, C. H.; Dumesic, J. A.; Roman-Leshkov, Y. Self-assembly of noble metal monolayers on transition metal carbide nanoparticle catalysts. Science 2016, 352, 974-978.
Boles, M. A.; Ling, D. S.; Hyeon, T.; Talapin, D. V. The surface science of nanocrystals. Nat. Mater. 2016, 15, 141-153.
Peng, S.; Lee, Y.; Wang, C.; Yin, H. F.; Dai, S.; Sun, S. H. A facile synthesis of monodisperse Au nanoparticles and their catalysis of CO oxidation. Nano Res. 2008, 1, 229-234.
Fu, Q.; Yang, F.; Bao, X. H. Interface-confined oxide nanostructures for catalytic oxidation reactions. Acc. Chem. Res. 2013, 46, 1692-1701.
Li, W.; Ding, W.; Nie, Y.; Qi, X. Q.; Wu, G. P.; Li, L.; Liao, J. H.; Chen, S. G.; Wei, Z. D. Enhancing the stability and activity by anchoring Pt nanoparticles between the layers of etched montmorillonite for oxygen reduction reaction. Sci. Bull. 2016, 61, 1435-1439.
Ding, W.; Xia, M. R.; Wei, Z. D.; Chen, S. G.; Hu, J. S.; Wan, L. J.; Qi, X. Q.; Hu, X. H.; Li, L. Enhanced stability and activity with Pd-O junction formation and electronic structure modification of palladium nanoparticles supported on exfoliated montmorillonite for the oxygen reduction reaction. Chem. Commun. 2014, 50, 6660-6663.
Lu, S. L.; Jin, Y. H.; Gu, H. W.; Zhang, W. Recent development of efficient electrocatalysts derived from porous organic polymers for oxygen reduction reaction. Sci. China Chem. 2017, 60, 999-1006.
Zhong, C. J.; Maye, M. M. Core-shell assembled nanoparticles as catalysts. Adv. Mater. 2001, 13, 1507-1511.
Joo, S. H.; Park, J. Y.; Tsung, C. K.; Yamada, Y.; Yang, P. D.; Somorjai, G. A. Thermally stable Pt/mesoporous silica core-shell nanocatalysts for high-temperature reactions. Nat. Mater. 2009, 8, 126-131.
Zhang, Q.; Lee, I.; Joo, J. B.; Zaera, F.; Yin, Y. D. Core-shell nanostructured catalysts. Acc. Chem. Res. 2013, 46, 1816-1824.
Wen, Z.; Liu, J.; Li, J. Core/shell Pt/C nanoparticles embedded in mesoporous carbon as a methanol-tolerant cathode catalyst in direct methanol fuel cells. Adv. Mater. 2008, 20, 743-747.
Guo, L.; Jiang, W. J.; Zhang, Y.; Hu, J. S.; Wei, Z. D.; Wan, L. J. Embedding Pt nanocrystals in N-doped porous carbon/carbon nanotubes toward highly stable electrocatalysts for the oxygen reduction reaction. ACS Catal. 2015, 5, 2903-2909.
Lu, J. L.; Fu, B. S.; Kung, M. C.; Xiao, G. M.; Elam, J. W.; Kung, H. H.; Stair, P. C. Coking-and sintering-resistant palladium catalysts achieved through atomic layer deposition. Science 2012, 335, 1205-1208.
Strasser, P.; Koh, S.; Anniyev, T.; Greeley, J.; More, K.; Yu, C. F.; Liu, Z. C.; Kaya, S.; Nordlund, D.; Ogasawara, H. et al. Lattice-strain control of the activity in dealloyed core-shell fuel cell catalysts. Nat. Chem. 2010, 2, 454-460.
Kim, H.; Robertson, A. W.; Kim, S. O.; Kim, J. M.; Warner, J. H. Resilient high catalytic performance of platinum nanocatalysts with porous graphene envelope. ACS Nano 2015, 9, 5947-5957.
De Rogatis, L.; Cargnello, M.; Gombac, V.; Lorenzut, B.; Montini, T.; Fornasiero, P. Embedded phases: A way to active and stable catalysts. ChemSusChem 2010, 3, 24-42.
Lang, H. G.; Maldonado, S.; Stevenson, K. J.; Chandler, B. D. Synthesis and characterization of dendrimer templated supported bimetallic Pt-Au nanoparticles. J. Am. Chem. Soc. 2004, 126, 12949-12956.
Xia, Y. N.; Xiong, Y. J.; Lim, B.; Skrabalak, S. E. Shape-controlled synthesis of metal nanocrystals: Simple chemistry meets complex physics? Angew. Chem., Int. Ed. 2009, 48, 60-103.
An, B.; Zhang, J. Z.; Cheng, K.; Ji, P. F.; Wang, C.; Lin, W. B. Confinement of ultrasmall Cu/ZnOx nanoparticles in metal-organic frameworks for selective methanol synthesis from catalytic hydrogenation of CO2. J. Am. Chem. Soc. 2017, 139, 3834-3840.
Deng, D. H.; Novoselov, K. S.; Fu, Q.; Zheng, N. F.; Tian, Z. Q.; Bao, X. H. Catalysis with two-dimensional materials and their heterostructures. Nat. Nanotechnol. 2016, 11, 218-230.
Geim, A. K.; Novoselov, K. S. The rise of graphene. Nat. Mater. 2007, 6, 183-191.
Zhou, J. W.; Qin, J.; Zhang, X.; Shi, C. S.; Liu, E. Z.; Li, J. J.; Zhao, N. Q.; He, C. N. 2D space-confined synthesis of few-layer MoS2 anchored on carbon nanosheet for lithium-ion battery anode. ACS Nano 2015, 9, 3837-3848.
Fu, Q.; Bao, X. H. Surface chemistry and catalysis confined under two-dimensional materials. Chem. Soc. Rev. 2017, 46, 1842-1874.
Zhang, Y. H.; Weng, X. F.; Li, H.; Li, H. B.; Wei, M. M.; Xiao, J. P.; Liu, Z.; Chen, M. S.; Fu, Q.; Bao, X. H. Hexagonal boron nitride cover on Pt(111): A new route to tune molecule-metal interaction and metal-catalyzed reactions. Nano Lett. 2015, 15, 3616-3623.
Yao, Y. X.; Fu, Q.; Zhang, Y. Y.; Weng, X. F.; Li, H.; Chen, M. S.; Jin, L.; Dong, A. Y.; Mu, R. T.; Jiang, P. et al. Graphene cover-promoted metal-catalyzed reactions. Proc. Natl. Acad. Sci. USA 2014, 111, 17023-17028.
Zhou, Y. N.; Chen, W.; Cui, P.; Zeng, J.; Lin, Z. N.; Kaxiras, E.; Zhang, Z. Y. Enhancing the hydrogen activation reactivity of nonprecious metal substrates via confined catalysis underneath graphene. Nano Lett. 2016, 16, 6058-6063.
Li, W.; Ding, W.; Wu, G. P.; Liao, J. H.; Yao, N.; Qi, X. Q.; Li, L.; Chen, S. G.; Wei, Z. D. Cobalt modified two-dimensional polypyrrole synthesized in a flat nanoreactor for the catalysis of oxygen reduction. Chem. Eng. Sci. 2015, 135, 45-51.
Ding, W.; Wei, Z. D.; Chen, S. G.; Qi, X. Q.; Yang, T.; Hu, J. S.; Wang, D.; Wan, L. J.; Alvi, S. F.; Li, L. Space-confinement-induced synthesis of pyridinic-and pyrrolic-nitrogen-doped graphene for the catalysis of oxygen reduction. Angew. Chem., Int. Ed. 2013, 52, 11755-11759.
Sun, M. M.; Fu, Q.; Gao, L. J.; Zheng, Y. P.; Li, Y. Y.; Chen, M. S.; Bao, X. H. Catalysis under shell: Improved CO oxidation reaction confined in Pt@h-BN core-shell nanoreactors. Nano Res. 2017, 10, 1403-1412.
Gao, L. J.; Fu, Q.; Wei, M. M.; Zhu, Y. F.; Liu, Q.; Crumlin, E.; Liu, Z.; Bao, X. H. Enhanced nickel-catalyzed methanation confined under hexagonal boron nitride shells. ACS Catal. 2016, 6, 6814-6822.
Hansen, T. W.; Wagner, J. B.; Hansen, P. L.; Dahl, S.; Topsøe, H.; Jacobsen, C. J. H. Atomic-resolution in situ transmission electron microscopy of a promoter of a heterogeneous catalyst. Science 2001, 294, 1508-1510.
Shrestha, R. P.; Diyabalanage, H. V. K.; Semelsberger, T. A.; Ott, K. C.; Burrell, A. K. Catalytic dehydrogenation of ammonia borane in non-aqueous medium. Int. J. Hydrogen Energ. 2009, 34, 2616-2621.
Smythe, N. C.; Gordon, J. C. Ammonia borane as a hydrogen carrier: Dehydrogenation and regeneration. Eur. J. Inorg. Chem. 2010, 2010, 509-521.
Kim, G.; Jang, A. R.; Jeong, H. Y.; Lee, Z.; Kang, D. J.; Shin, H. S. Growth of high-crystalline, single-layer hexagonal boron nitride on recyclable platinum foil. Nano Lett. 2013, 13, 1834-1839.
Ren, N.; Yang, Y. H.; Shen, J.; Zhang, Y. H.; Xu, H. L.; Gao, Z.; Tang, Y. Novel, efficient hollow zeolitically microcapsulized noble metal catalysts. J. Catal. 2007, 251, 182-188.
Limat, M.; Fóti, G.; Hugentobler, M.; Stephan, R.; Harbich, W. Electrochemically stable gold nanoclusters in hopg nanopits. Catal. Today 2009, 146, 378-385.
Shinozaki, K.; Zack, J. W.; Richards, R. M.; Pivovar, B. S.; Kocha, S. S. Oxygen reduction reaction measurements on platinum electrocatalysts utilizing rotating disk electrode technique I. Impact of impurities, measurement protocols and applied corrections. J. Electrochem. Soc. 2015, 162, F1144-F1158.
Kocha, S. S.; Shinozaki, K.; Zack, J. W.; Myers, D. J.; Kariuki, N. N.; Nowicki, T.; Stamenkovic, V.; Kang, Y. J.; Li, D. G.; Papageorgopoulos, D. Best practices and testing protocols for benchmarking orr activities of fuel cell electrocatalysts using rotating disk electrode. Electrocatalysis 2017, 8, 366-374.
Li, H. B.; Xiao, J. P.; Fu, Q.; Bao, X. H. Confined catalysis under two-dimensional materials. Proc. Natl. Acad. Sci. USA 2017, 114, 5930-5934.
Jeanmaire, D. L.; Van Duyne, R. P. Surface Raman spectroelectrochemistry: Part Ⅰ. Heterocyclic, aromatic, and aliphatic amines adsorbed on the anodized silver electrode. J. Electroanal. Chem. Interf. Electrochem. 1977, 84, 1-20.
Fleischmann, M.; Hendra, P. J.; McQuillan, A. J. Raman spectra of pyridine adsorbed at a silver electrode. Chem. Phys. Lett. 1974, 26, 163-166.
Li, J. F.; Huang, Y. F.; Ding, Y.; Yang, Z. L.; Li, S. B.; Zhou, X. S.; Fan, F. R.; Zhang, W.; Zhou, Z. Y.; Wu, D. Y. et al. Shell-isolated nanoparticle-enhanced Raman spectroscopy. Nature 2010, 464, 392-395.
Li, C. Y.; Dong, J. C.; Jin, X.; Chen, S.; Panneerselvam, R.; Rudnev, A. V.; Yang, Z. L.; Li, J. F.; Wandlowski, T.; Tian, Z. Q. In situ monitoring of electrooxidation processes at gold single crystal surfaces using shell-isolated nanoparticle-enhanced Raman spectroscopy. J. Am. Chem. Soc. 2015, 137, 7648-7651.
Tanaka, H.; Sugawara, S.; Shinohara, K.; Ueno, T.; Suzuki, S.; Hoshi, N.; Nakamura, M. Infrared reflection absorption spectroscopy of OH adsorption on the low index planes of Pt. Electrocatalysis 2015, 6, 295-299.
Itoh, T.; Maeda, T.; Kasuya, A. In situ surface-enhanced Raman scattering spectroelectrochemistry of oxygen species. Faraday Discuss. 2006, 132, 95-109.
Kim, J. W.; Gewirth, A. A. Mechanism of oxygen electroreduction on gold surfaces in basic media. J. Phys. Chem. B 2006, 110, 2565-2571.
Li, X.; Gewirth, A. A. Oxygen electroreduction through a superoxide intermediate on bi-modified Au surfaces. J. Am. Chem. Soc. 2005, 127, 5252-5260.
Keith, J. A.; Jerkiewicz, G.; Jacob, T. Theoretical investigations of the oxygen reduction reaction on Pt(111). ChemPhysChem 2010, 11, 2779-2794.
Nørskov, J. K.; Rossmeisl, J.; Logadottir, A.; Lindqvist, L.; Kitchin, J. R.; Bligaard, T.; Jónsson, H. Origin of the overpotential for oxygen reduction at a fuel-cell cathode. J. Phys. Chem. B 2004, 108, 17886-17892.
Mertens, S. F. L.; Hemmi, A.; Muff, S.; Gröning, O.; De Feyter, S.; Osterwalder, J.; Greber, T. Switching stiction and adhesion of a liquid on a solid. Nature 2016, 534, 676-679.
Fu, Y. C.; Rudnev, A. V.; Wiberg, G. K. H.; Arenz, M. Single graphene layer on Pt(111) creates confined electrochemical environment via selective ion transport. Angew. Chem., Int. Ed. 2017, 56, 12883-12887.
Gao, L. B.; Ren, W. C.; Xu, H. L.; Jin, L.; Wang, Z. X.; Ma, T.; Ma, L. P.; Zhang, Z. Y.; Fu, Q.; Peng, L. M. et al. Repeated growth and bubbling transfer of graphene with millimetre-size single-crystal grains using platinum. Nat. Commun. 2012, 3, 699.
Wang, Q. M.; Chen, S. G.; Shi, F.; Chen, K.; Nie, Y.; Wang, Y.; Wu, R.; Li, J.; Zhang, Y.; Ding, W. et al. Structural evolution of solid Pt nanoparticles to a hollow PtFe alloy with a Pt-skin surface via space-confined pyrolysis and the nanoscale kirkendall effect. Adv. Mater. 2016, 28, 10673-10678.
Cheng, N. C.; Banis, M. N.; Liu, J.; Riese, A.; Li, X.; Li, R. Y.; Ye, S. Y.; Knights, S.; Sun, X. L. Extremely stable platinum nanoparticles encapsulated in a zirconia nanocage by area-selective atomic layer deposition for the oxygen reduction reaction. Adv. Mater. 2015, 27, 277-281.
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