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Muhammad F, Huang F, Cheng Y, Chen X, Wang Q, Zhu C, Zhang Y, Yang X, Wang P, Wei H. Nanoceria as an Electron Reservoir: Spontaneous Deposition of Metal Nanoparticles on Oxides and Their Anti-inflammatory Activities. ACS NANO 2022; 16:20567-20576. [PMID: 36394328 DOI: 10.1021/acsnano.2c07306] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Designing metal-metal oxide heteronanostructures with synergistic and superior activities (unattainable in the case of a single entity) is of great interest for a wide range of technological applications. Traditional synthetic strategies typically require reducing agents, stabilizing ligands, or high temperature reductive treatment to produce oxide-supported metals. Herein, a facile noble metal deposition strategy is developed to produce silver, gold, and platinum nanocrystals on the surface of hollow mesoporous cerium oxide nanospheres without any pretreatment. Unlike the galvanic replacement reaction, the developed protocol employs the innate reductive potential of CeO2 to produce a high density of ultrafine noble metal nanocrystals homogeneously immobilized onto the surface of CeO2 nanospheres. The multienzyme-like activities (i.e., superoxide dismutase-like and catalase-like) of CeO2@metal nanostructures, originating from CeO2 and metal nanoparticles, were effectively utilized for anti-inflammatory therapies in two in vivo models. This oxygen vacancy-mediated reduction strategy can be generalized to produce diverse metal-metal oxide nanostructures for a wide range of applications.
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Affiliation(s)
- Faheem Muhammad
- College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Futao Huang
- College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Yuan Cheng
- College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Xiwen Chen
- College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Quan Wang
- College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Chenxin Zhu
- College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Yihong Zhang
- College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Xiaohan Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Peng Wang
- College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Hui Wei
- College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210023, China
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing, Jiangsu 210023, China
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In situ Synthesis of Ultrasmall Au Clusters on Thiol-modified CeO2 with Enhanced Stability and CO Oxidation Activity. Chem Res Chin Univ 2022. [DOI: 10.1007/s40242-022-2267-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Stadnichenko AI, Slavinskaya EM, Fakhrutdinova ED, Kardash TY, Svetlichnyi VA, Boronin AI. Effect of the Type of Active Component–Support Interaction on the Low-Temperature Activity of Metal–Oxide Catalysts in CO Oxidation. DOKLADY PHYSICAL CHEMISTRY 2022. [DOI: 10.1134/s0012501622700051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Stadnichenko AI, Slavinskaya EM, Fedorova EA, Goncharova DA, Zaikovskii VI, Kardash TY, Svetlichnyi VA, Boronin AI. ACTIVATION OF Au–CeO2 COMPOSITES PREPARED BY PULSED LASER ABLATION IN THE REACTION OF LOW-TEMPERATURE CO OXIDATION. J STRUCT CHEM+ 2021. [DOI: 10.1134/s0022476621120118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Fiuza TER, Gonçalves DS, Gomes IF, Zanchet D. CeO2-supported Au and AuCu catalysts for CO oxidation: Impact of activation protocol and residual chlorine on the active sites. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.07.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Influence of Co-Precipitation Agent on the Structure, Texture and Catalytic Activity of Au-CeO2 Catalysts in Low-Temperature Oxidation of Benzyl Alcohol. Catalysts 2021. [DOI: 10.3390/catal11050641] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The aim of the study was to establish the influence of a co-precipitation agent (i.e., NaOH–immediate precipitation; hexamethylenetetramine/urea–gradual precipitation and growth of nanostructures) on the properties and catalytic activity of as-synthesized Au-CeO2 nanocomposites. All catalysts were fully characterized with the use of XRD, nitrogen physisorption, ICP-OES, SEM, HR-TEM, UV-vis, XPS, and tested in low-temperature oxidation of benzyl alcohol as a model oxidation reaction. The results obtained in this study indicated that the type of co-precipitation agent has a significant impact on the growth of gold species. Immediate co-precipitation of Au-CeO2 nanostructures with the use of NaOH allowed obtainment of considerably smaller and more homogeneous in size gold nanoparticles than those formed by gradual co-precipitation and growth of Au-CeO2 nanostructures in the presence of hexamethylenetetramine or urea. In the catalytic tests, it was established that the key factor promoting high activity in low-temperature oxidation of benzyl alcohol was size of gold nanoparticles. The highest conversion of the alcohol was observed for the catalyst containing the smallest Au particle size (i.e., Au-CeO2 nanocomposite prepared with the use of NaOH as a co-precipitation agent).
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Physical and Chemical Synthesis of Au/CeO2 Nanoparticle Catalysts for Room Temperature CO Oxidation: A Comparative Study. Catalysts 2020. [DOI: 10.3390/catal10111351] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
In many heterogeneous catalytic reactions, such as low-temperature CO oxidation, the preparation conditions, and the role of the CeO2 support (oxygen vacancies and redox properties) in the dispersion and the chemical state of Au, are considered critical factors for obtaining gold nanoparticle catalysts with high catalytic performance. In this work, the physical and chemical preparation methods were compared, aiming at understanding how the preparation method influences the catalytic activity. The Au/CeO2 nanoparticle catalysts with 5% Au loading were prepared via the Physical Laser Vaporization Controlled Condensation method (LVCC), and the chemical Deposition-Precipitation method (DP) was used to investigate the effect of synthesis methods on the structure and the catalytic activity toward the CO oxidation. In this manuscript, we compare the activity of nanostructured Au/CeO2 catalysts. The structure and the redox properties of the catalysts were investigated by the XRD, SEM, TEM, TPR, and XPS. The catalytic activity for low-temperature CO oxidation was studied using a custom-built quartz tube flow reactor coupled with an infrared detector system at atmospheric pressure. The study reveals that the prepared CeO2-supported Au nanoparticles’ catalytic activity was highly dependent on the preparation methods. It showed that the sample prepared by the DP method exhibits higher catalytic efficiency toward CO oxidation when compared with the sample prepared by the LVCC method. The high catalytic activity could be attributed to the small particle size and shape, slightly higher Au concentration at the surface, surface-active Au species such as Au1+, along with the large interface between Au and CeO2. This study suggests that the stability, dispersion of Au nanoparticles on CeO2, and strong interaction between Au and CeO2 lead to strong oxidation ability even below room temperature. Considering the universal character of different physical and chemical methods for Au/CeO2 preparation, this study may also provide a base for supported Au-based catalysts for many oxidation reactions in energy and environmental applications.
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Woźniak P, Miśta W, Małecka MA. Function of various levels of hierarchical organization of porous Ce 0.9REE 0.1O 1.95 mixed oxides in catalytic activity. CrystEngComm 2020. [DOI: 10.1039/d0ce00883d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Each level of hierarchical structure of the star-like Ce0.9REE0.1O1.95 mixed oxides has its own functionality and is susceptible to modification.
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Affiliation(s)
- Piotr Woźniak
- Institute of Low Temperature and Structure Research
- Polish Academy of Sciences
- 50-950 Wrocław 2
- Poland
| | - Włodzimierz Miśta
- Institute of Low Temperature and Structure Research
- Polish Academy of Sciences
- 50-950 Wrocław 2
- Poland
| | - Małgorzata A. Małecka
- Institute of Low Temperature and Structure Research
- Polish Academy of Sciences
- 50-950 Wrocław 2
- Poland
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Tang K, Zeng D, Lin F, Yang Y, Wu L. The contributions of distinct Pd surface sites in palladium–ceria catalysts to low-temperature CO oxidation. CrystEngComm 2020. [DOI: 10.1039/c9ce01916b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The low-temperature CO oxidation properties of Pd/CeO2 catalysts can be correlated with the distribution of PdOx/Pd–O–Ce species.
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Affiliation(s)
- Ke Tang
- School of Chemistry and Chemical Engineering
- Heze University
- Heze
- P. R. China
- Key Laboratory for Special Functional Aggregate Materials of Education Ministry
| | - Dan Zeng
- Heze Municipal Hospital
- Heze
- P. R. China
| | - Feng Lin
- School of Chemistry and Chemical Engineering
- Heze University
- Heze
- P. R. China
| | - Yanzhao Yang
- Key Laboratory for Special Functional Aggregate Materials of Education Ministry
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
- P. R. China
| | - Lishun Wu
- School of Chemistry and Chemical Engineering
- Heze University
- Heze
- P. R. China
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