Large‐Pore Mesoporous CeO2–ZrO2 Solid Solutions with In‐Pore Confined Pt Nanoparticles for Enhanced CO Oxidation
Active and stable catalysts are highly desired for converting harmful substances (e.g., CO, NOx) in exhaust gases of vehicles into safe gases at low exhaust temperatures. Here, a solvent evaporation–induced co‐assembly process is employed to design ordered mesoporous CexZr1−xO2 (0 ≤ x ≤ 1) solid sol...
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| Veröffentlicht in: | Small (Weinheim an der Bergstrasse, Germany) Germany), 2019-09, Vol.15 (39), p.e1903058-n/a |
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| creator | Yang, Xuanyu Cheng, Xiaowei Ma, Junhao Zou, Yidong Luo, Wei Deng, Yonghui |
| description | Active and stable catalysts are highly desired for converting harmful substances (e.g., CO, NOx) in exhaust gases of vehicles into safe gases at low exhaust temperatures. Here, a solvent evaporation–induced co‐assembly process is employed to design ordered mesoporous CexZr1−xO2 (0 ≤ x ≤ 1) solid solutions by using high‐molecular‐weight poly(ethylene oxide)‐block‐polystyrene as the template. The obtained mesoporous CexZr1−xO2 possesses high surface area (60–100 m2 g−1) and large pore size (12–15 nm), enabling its great capacity in stably immobilizing Pt nanoparticles (4.0 nm) without blocking pore channels. The obtained mesoporous Pt/Ce0.8Zr0.2O2 catalyst exhibits superior CO oxidation activity with a very low T100 value of 130 °C (temperature of 100% CO conversion) and excellent stability due to the rich lattice oxygen vacancies in the Ce0.8Zr0.2O2 framework. The simulated catalytic evaluations of CO oxidation combined with various characterizations reveal that the intrinsic high surface oxygen mobility and well‐interconnected pore structure of the mesoporous Pt/Ce0.8Zr0.2O2 catalyst are responsible for the remarkable catalytic efficiency. Additionally, compared with mesoporous Pt/CexZr1−xO2‐s with small pore size (3.8 nm), ordered mesoporous Pt/CexZr1−xO2 not only facilitates the mass diffusion of reactants and products, but also provides abundant anchoring sites for Pt nanoparticles and numerous exposed catalytically active interfaces for efficient heterogeneous catalysis.
Highly ordered mesoporous CexZr1−xO2 solid solutions with in‐pore confined Pt nanoparticles are synthesized via a solvent evaporation–induced co‐assembly method. The obtained mesoporous Pt/Ce0.8Zr0.2O2 catalysts display outstanding catalytic performance in CO oxidation at low temperatures due to the well‐interconnected mesoporous structures and synergistic effect of the oxide–metal interface between the Ce0.8Zr0.2O2 support and the highly dispersed Pt nanoparticles. |
| doi_str_mv | 10.1002/smll.201903058 |
| format | Article |
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Highly ordered mesoporous CexZr1−xO2 solid solutions with in‐pore confined Pt nanoparticles are synthesized via a solvent evaporation–induced co‐assembly method. The obtained mesoporous Pt/Ce0.8Zr0.2O2 catalysts display outstanding catalytic performance in CO oxidation at low temperatures due to the well‐interconnected mesoporous structures and synergistic effect of the oxide–metal interface between the Ce0.8Zr0.2O2 support and the highly dispersed Pt nanoparticles.</description><identifier>ISSN: 1613-6810</identifier><identifier>EISSN: 1613-6829</identifier><identifier>DOI: 10.1002/smll.201903058</identifier><language>eng</language><publisher>Weinheim: Wiley Subscription Services, Inc</publisher><subject>Anchoring ; Blocking ; Catalysis ; catalysis hysteresis ; Catalysts ; CeO2–ZrO2 solid solutions ; Cerium oxides ; CO oxidation ; co‐assembly ; Ethylene oxide ; Exhaust gases ; Fuel consumption ; Lattice vacancies ; mesoporous materials ; Nanoparticles ; Nanotechnology ; Nitrogen oxides ; Oxidation ; Platinum ; Polystyrene resins ; Pore size ; Porosity ; Solid solutions ; Zirconium dioxide</subject><ispartof>Small (Weinheim an der Bergstrasse, Germany), 2019-09, Vol.15 (39), p.e1903058-n/a</ispartof><rights>2019 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000-0002-0657-9397</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fsmll.201903058$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fsmll.201903058$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids></links><search><creatorcontrib>Yang, Xuanyu</creatorcontrib><creatorcontrib>Cheng, Xiaowei</creatorcontrib><creatorcontrib>Ma, Junhao</creatorcontrib><creatorcontrib>Zou, Yidong</creatorcontrib><creatorcontrib>Luo, Wei</creatorcontrib><creatorcontrib>Deng, Yonghui</creatorcontrib><title>Large‐Pore Mesoporous CeO2–ZrO2 Solid Solutions with In‐Pore Confined Pt Nanoparticles for Enhanced CO Oxidation</title><title>Small (Weinheim an der Bergstrasse, Germany)</title><description>Active and stable catalysts are highly desired for converting harmful substances (e.g., CO, NOx) in exhaust gases of vehicles into safe gases at low exhaust temperatures. Here, a solvent evaporation–induced co‐assembly process is employed to design ordered mesoporous CexZr1−xO2 (0 ≤ x ≤ 1) solid solutions by using high‐molecular‐weight poly(ethylene oxide)‐block‐polystyrene as the template. The obtained mesoporous CexZr1−xO2 possesses high surface area (60–100 m2 g−1) and large pore size (12–15 nm), enabling its great capacity in stably immobilizing Pt nanoparticles (4.0 nm) without blocking pore channels. The obtained mesoporous Pt/Ce0.8Zr0.2O2 catalyst exhibits superior CO oxidation activity with a very low T100 value of 130 °C (temperature of 100% CO conversion) and excellent stability due to the rich lattice oxygen vacancies in the Ce0.8Zr0.2O2 framework. The simulated catalytic evaluations of CO oxidation combined with various characterizations reveal that the intrinsic high surface oxygen mobility and well‐interconnected pore structure of the mesoporous Pt/Ce0.8Zr0.2O2 catalyst are responsible for the remarkable catalytic efficiency. Additionally, compared with mesoporous Pt/CexZr1−xO2‐s with small pore size (3.8 nm), ordered mesoporous Pt/CexZr1−xO2 not only facilitates the mass diffusion of reactants and products, but also provides abundant anchoring sites for Pt nanoparticles and numerous exposed catalytically active interfaces for efficient heterogeneous catalysis.
Highly ordered mesoporous CexZr1−xO2 solid solutions with in‐pore confined Pt nanoparticles are synthesized via a solvent evaporation–induced co‐assembly method. The obtained mesoporous Pt/Ce0.8Zr0.2O2 catalysts display outstanding catalytic performance in CO oxidation at low temperatures due to the well‐interconnected mesoporous structures and synergistic effect of the oxide–metal interface between the Ce0.8Zr0.2O2 support and the highly dispersed Pt nanoparticles.</description><subject>Anchoring</subject><subject>Blocking</subject><subject>Catalysis</subject><subject>catalysis hysteresis</subject><subject>Catalysts</subject><subject>CeO2–ZrO2 solid solutions</subject><subject>Cerium oxides</subject><subject>CO oxidation</subject><subject>co‐assembly</subject><subject>Ethylene oxide</subject><subject>Exhaust gases</subject><subject>Fuel consumption</subject><subject>Lattice vacancies</subject><subject>mesoporous materials</subject><subject>Nanoparticles</subject><subject>Nanotechnology</subject><subject>Nitrogen oxides</subject><subject>Oxidation</subject><subject>Platinum</subject><subject>Polystyrene resins</subject><subject>Pore size</subject><subject>Porosity</subject><subject>Solid solutions</subject><subject>Zirconium dioxide</subject><issn>1613-6810</issn><issn>1613-6829</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNpdkbtOwzAUhiMEEqWwMltiYWnxJXHjEUUFKqWkUmFhiZzYaV2ldrATSrc-AhJv2CchUaEDy7nofOfXOfo97xrBIYIQ37l1WQ4xRAwSGIQnXg9RRAY0xOz0WCN47l04t4KQIOyPet5HzO1C7ndfM2MlmEpnKmNN40AkE7zffb_ZBIO5KZXoYlMrox3YqHoJJvpvKzK6UFoKMKvBM9em4rZWeSkdKIwFY73kOm-nUQKSTyV4p3HpnRW8dPLqN_e914fxS_Q0iJPHSXQfDxYEknDg54jmARkVhchEkY2ECJgvJQtEJrEvIYdZiEMmck5wmImMcuajwA8oRZRLPyB97_agW1nz3khXp2vlclmWXMv2yxRjyggjlPgtevMPXZnG6va6lmK0Uw1hS7EDtVGl3KaVVWtutymCaedB2nmQHj1I59M4PnbkB63hgGo</recordid><startdate>20190901</startdate><enddate>20190901</enddate><creator>Yang, Xuanyu</creator><creator>Cheng, Xiaowei</creator><creator>Ma, Junhao</creator><creator>Zou, Yidong</creator><creator>Luo, Wei</creator><creator>Deng, Yonghui</creator><general>Wiley Subscription Services, Inc</general><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-0657-9397</orcidid></search><sort><creationdate>20190901</creationdate><title>Large‐Pore Mesoporous CeO2–ZrO2 Solid Solutions with In‐Pore Confined Pt Nanoparticles for Enhanced CO Oxidation</title><author>Yang, Xuanyu ; Cheng, Xiaowei ; Ma, Junhao ; Zou, Yidong ; Luo, Wei ; Deng, Yonghui</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-g3038-4c16c537ffdbdfb7dd594ee95dbe24e0a0b8289dca328bdb6a9415456616ae453</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Anchoring</topic><topic>Blocking</topic><topic>Catalysis</topic><topic>catalysis hysteresis</topic><topic>Catalysts</topic><topic>CeO2–ZrO2 solid solutions</topic><topic>Cerium oxides</topic><topic>CO oxidation</topic><topic>co‐assembly</topic><topic>Ethylene oxide</topic><topic>Exhaust gases</topic><topic>Fuel consumption</topic><topic>Lattice vacancies</topic><topic>mesoporous materials</topic><topic>Nanoparticles</topic><topic>Nanotechnology</topic><topic>Nitrogen oxides</topic><topic>Oxidation</topic><topic>Platinum</topic><topic>Polystyrene resins</topic><topic>Pore size</topic><topic>Porosity</topic><topic>Solid solutions</topic><topic>Zirconium dioxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yang, Xuanyu</creatorcontrib><creatorcontrib>Cheng, Xiaowei</creatorcontrib><creatorcontrib>Ma, Junhao</creatorcontrib><creatorcontrib>Zou, Yidong</creatorcontrib><creatorcontrib>Luo, Wei</creatorcontrib><creatorcontrib>Deng, Yonghui</creatorcontrib><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Small (Weinheim an der Bergstrasse, Germany)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yang, Xuanyu</au><au>Cheng, Xiaowei</au><au>Ma, Junhao</au><au>Zou, Yidong</au><au>Luo, Wei</au><au>Deng, Yonghui</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Large‐Pore Mesoporous CeO2–ZrO2 Solid Solutions with In‐Pore Confined Pt Nanoparticles for Enhanced CO Oxidation</atitle><jtitle>Small (Weinheim an der Bergstrasse, Germany)</jtitle><date>2019-09-01</date><risdate>2019</risdate><volume>15</volume><issue>39</issue><spage>e1903058</spage><epage>n/a</epage><pages>e1903058-n/a</pages><issn>1613-6810</issn><eissn>1613-6829</eissn><abstract>Active and stable catalysts are highly desired for converting harmful substances (e.g., CO, NOx) in exhaust gases of vehicles into safe gases at low exhaust temperatures. Here, a solvent evaporation–induced co‐assembly process is employed to design ordered mesoporous CexZr1−xO2 (0 ≤ x ≤ 1) solid solutions by using high‐molecular‐weight poly(ethylene oxide)‐block‐polystyrene as the template. The obtained mesoporous CexZr1−xO2 possesses high surface area (60–100 m2 g−1) and large pore size (12–15 nm), enabling its great capacity in stably immobilizing Pt nanoparticles (4.0 nm) without blocking pore channels. The obtained mesoporous Pt/Ce0.8Zr0.2O2 catalyst exhibits superior CO oxidation activity with a very low T100 value of 130 °C (temperature of 100% CO conversion) and excellent stability due to the rich lattice oxygen vacancies in the Ce0.8Zr0.2O2 framework. The simulated catalytic evaluations of CO oxidation combined with various characterizations reveal that the intrinsic high surface oxygen mobility and well‐interconnected pore structure of the mesoporous Pt/Ce0.8Zr0.2O2 catalyst are responsible for the remarkable catalytic efficiency. Additionally, compared with mesoporous Pt/CexZr1−xO2‐s with small pore size (3.8 nm), ordered mesoporous Pt/CexZr1−xO2 not only facilitates the mass diffusion of reactants and products, but also provides abundant anchoring sites for Pt nanoparticles and numerous exposed catalytically active interfaces for efficient heterogeneous catalysis.
Highly ordered mesoporous CexZr1−xO2 solid solutions with in‐pore confined Pt nanoparticles are synthesized via a solvent evaporation–induced co‐assembly method. The obtained mesoporous Pt/Ce0.8Zr0.2O2 catalysts display outstanding catalytic performance in CO oxidation at low temperatures due to the well‐interconnected mesoporous structures and synergistic effect of the oxide–metal interface between the Ce0.8Zr0.2O2 support and the highly dispersed Pt nanoparticles.</abstract><cop>Weinheim</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1002/smll.201903058</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0002-0657-9397</orcidid></addata></record> |
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| subjects | Anchoring Blocking Catalysis catalysis hysteresis Catalysts CeO2–ZrO2 solid solutions Cerium oxides CO oxidation co‐assembly Ethylene oxide Exhaust gases Fuel consumption Lattice vacancies mesoporous materials Nanoparticles Nanotechnology Nitrogen oxides Oxidation Platinum Polystyrene resins Pore size Porosity Solid solutions Zirconium dioxide |
| title | Large‐Pore Mesoporous CeO2–ZrO2 Solid Solutions with In‐Pore Confined Pt Nanoparticles for Enhanced CO Oxidation |
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