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Xie H, Zhang Y, Liu P, Duo X, Hu Z, Yu J, Wang Z, Yao G, Feng L, Huang X, Ouyang R, Wang Y. Rb-Doped Perovskite Oxides: Surface Enrichment and Structural Reconstruction During the Oxygen Evolution Reaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2400668. [PMID: 38881363 DOI: 10.1002/smll.202400668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 05/31/2024] [Indexed: 06/18/2024]
Abstract
Alkali-metal doped perovskite oxides have emerged as promising materials due to their unique properties and broad applications in various fields, including photovoltaics and catalysis. Understanding the complex interplay between alkali metal doping, structural modifications, and their impact on performance remains a crucial challenge. In this study, this challenge is addressed by investigating the synthesis and properties of Rb-doped perovskite oxides. These results reveal that the doping of Rb into perovskite oxides function as a structural modifier in the as-synthesized samples and during the oxygen evolution reaction (OER) as well. Electron microscopy and first-principles calculations confirm the enrichment of Rb on the surface of the as-synthesized sample. Further investigations into the electrocatalytic reaction revealed that the Rb-doped perovskite underwent drastic restructuring with Rb leaching and formation of strontium oxide.
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Affiliation(s)
- Huachao Xie
- Materials Genome Institute, Shanghai University, Shanghai, 200444, P. R. China
| | - Yuxuan Zhang
- Materials Genome Institute, Shanghai University, Shanghai, 200444, P. R. China
| | - Panpan Liu
- College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
- Qingyuan Innovation Laboratory, Quanzhou, 362801, P. R. China
| | - Xuyao Duo
- Materials Genome Institute, Shanghai University, Shanghai, 200444, P. R. China
| | - Zhonghui Hu
- Materials Genome Institute, Shanghai University, Shanghai, 200444, P. R. China
| | - Jia Yu
- Materials Genome Institute, Shanghai University, Shanghai, 200444, P. R. China
| | - Zihan Wang
- Materials Genome Institute, Shanghai University, Shanghai, 200444, P. R. China
| | - Guodong Yao
- State Key, Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China
| | - Lingyan Feng
- Materials Genome Institute, Shanghai University, Shanghai, 200444, P. R. China
| | - Xing Huang
- College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
- Qingyuan Innovation Laboratory, Quanzhou, 362801, P. R. China
| | - Runhai Ouyang
- Materials Genome Institute, Shanghai University, Shanghai, 200444, P. R. China
| | - Yuanqing Wang
- Materials Genome Institute, Shanghai University, Shanghai, 200444, P. R. China
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Zuhra Z, Li S, Xie G, Wang X. Soot Erased: Catalysts and Their Mechanistic Chemistry. Molecules 2023; 28:6884. [PMID: 37836727 PMCID: PMC10574243 DOI: 10.3390/molecules28196884] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/25/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
Soot formation is an inevitable consequence of the combustion of carbonaceous fuels in environments rich in reducing agents. Efficient management of pollution in various contexts, such as industrial fires, vehicle engines, and similar applications, relies heavily on the subsequent oxidation of soot particles. Among the oxidizing agents employed for this purpose, oxygen, carbon dioxide, water vapor, and nitrogen dioxide have all demonstrated effectiveness. The scientific framework of this research can be elucidated through the following key aspects: (i) This review situates itself within the broader context of pollution management, emphasizing the importance of effective soot oxidation in reducing emissions and mitigating environmental impacts. (ii) The central research question of this study pertains to the identification and evaluation of catalysts for soot oxidation, with a specific emphasis on ceria-based catalysts. The formulation of this research question arises from the need to enhance our understanding of catalytic mechanisms and their application in environmental remediation. This question serves as the guiding principle that directs the research methodology. (iii) This review seeks to investigate the catalytic mechanisms involved in soot oxidation. (iv) This review highlights the efficacy of ceria-based catalysts as well as other types of catalysts in soot oxidation and elucidate the underlying mechanistic strategies. The significance of these findings is discussed in the context of pollution management and environmental sustainability. This study contributes to the advancement of knowledge in the field of catalysis and provides valuable insights for the development of effective strategies to combat air pollution, ultimately promoting a cleaner and healthier environment.
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Affiliation(s)
- Zareen Zuhra
- Department of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China; (Z.Z.); (S.L.); (X.W.)
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
| | - Shuo Li
- Department of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China; (Z.Z.); (S.L.); (X.W.)
| | - Guanqun Xie
- Department of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China; (Z.Z.); (S.L.); (X.W.)
| | - Xiaoxia Wang
- Department of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China; (Z.Z.); (S.L.); (X.W.)
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Zhang Z, Dong R, Lan G, Yuan T, Tan D. Diesel particulate filter regeneration mechanism of modern automobile engines and methods of reducing PM emissions: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:39338-39376. [PMID: 36750514 PMCID: PMC9905014 DOI: 10.1007/s11356-023-25579-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
Diesel particulate filter (DPF) is considered as an effective method to control particulate matter (PM) emissions from diesel engines, which is included in the mandatory installation list by more and more national/regional laws and regulations, such as CHINA VI, Euro VI, and EPA Tier3. Due to the limited capacity of DPF to contain PM, the manufacturer introduced a method of treating deposited PM by oxidation, which is called regeneration. This paper comprehensively summarizes the most advanced regeneration technology, including filter structure, new catalyst formula, accurate soot prediction, safe and reliable regeneration strategy, uncontrolled regeneration and its control methods. In addition, due to the change of working conditions in the regeneration process, the additional emissions during regeneration are discussed in this paper. The DPF is not only the aftertreatment device but also can be combined with diesel oxidation catalyst (DOC), selective catalytic reduction (SCR) and exhaust recirculation (EGR). In addition, the impact of DPF modification on the original system of some old models has been reasonably discussed in order to achieve emission targets.
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Affiliation(s)
- Zhiqing Zhang
- Research Center of Guangxi Industry High-Quality Development, Guangxi University of Science and Technology, Liuzhou, 545006, China
- School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, China
- School of Mechanical and Marine Engineering, Beibu Gulf University, Qinzhou, 535011, China
| | - Rui Dong
- Research Center of Guangxi Industry High-Quality Development, Guangxi University of Science and Technology, Liuzhou, 545006, China
- School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, China
| | - Guanglin Lan
- School of Mechanical and Marine Engineering, Beibu Gulf University, Qinzhou, 535011, China
| | - Tao Yuan
- Purchasing Department, SAIC GM Wuling Automobile Co., Ltd, Liuzhou, 545007, China
| | - Dongli Tan
- Research Center of Guangxi Industry High-Quality Development, Guangxi University of Science and Technology, Liuzhou, 545006, China.
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Peng C, Yu D, Zhang C, Chen M, Wang L, Yu X, Fan X, Zhao Z, Cheng K, Chen Y, Wei Y, Liu J. Alkali/alkaline-earth metal-modified MnO x supported on three-dimensionally ordered macroporous-mesoporous Ti xSi 1-xO 2 catalysts: Preparation and catalytic performance for soot combustion. J Environ Sci (China) 2023; 125:82-94. [PMID: 36375963 DOI: 10.1016/j.jes.2021.10.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 10/25/2021] [Accepted: 10/27/2021] [Indexed: 06/16/2023]
Abstract
The performance of catalysts used in after-treatment systems is the key factor for the removal of diesel soot, which is an important component of atmospheric fine particle emissions. Herein, three-dimensionally ordered macroporous-mesoporous TixSi1-xO2 (3DOM-m TixSi1-xO2) and its supported MnOx catalysts doped with different alkali/alkaline-earth metals (AMnOx/3DOM-m Ti0.7Si0.3O2 (A: Li, Na, K, Ru, Cs, Mg, Ca, Sr, Ba)) were prepared by mesoporous template (P123)-assisted colloidal crystal template (CCT) and incipient wetness impregnation methods, respectively. Physicochemical characterizations of the catalysts were performed using scanning electron microscopy, X-ray diffraction, N2 adsorption-desorption, H2 temperature-programmed reduction, O2 temperature-programmed desorption, NO temperature-programmed oxidation, and Raman spectroscopy techniques; then, we evaluated their catalytic performances for the removal of diesel soot particles. The results show that the 3DOM-m Ti0.7Si0.3O2 supports exhibited a well-defined 3DOM-m nanostructure, and AMnOx nanoparticles with 10-50 nm were evenly dispersed on the inner walls of the uniform macropores. In addition, the as-prepared catalysts exhibited good catalytic performance for soot combustion. Among the prepared catalysts, CsMnOx/3DOM-m Ti0.7Si0.3O2 had the highest catalytic activity for soot combustion, with T10, T50, and T90 (the temperatures corresponding to soot conversion rates of 10%, 50%, and 90%) values of 285, 355, and 393°C, respectively. The high catalytic activity of the CsMnOx/3DOM-m Ti0.7Si0.3O2 catalysts was attributed to their excellent low-temperature reducibility and homogeneous macroporous-mesoporous structure, as well as to the synergistic effects between Cs and Mn species and between CsMnOx and the Ti0.7Si0.3O2 support.
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Affiliation(s)
- Chao Peng
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China
| | - Di Yu
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China
| | - Chunlei Zhang
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China
| | - Maozhong Chen
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China
| | - Lanyi Wang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Xuehua Yu
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China.
| | - Xiaoqiang Fan
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China
| | - Zhen Zhao
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China; State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China.
| | - Kai Cheng
- Energy and Catalysis Laboratory, Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Hong Kong, China
| | - Yongsheng Chen
- Energy and Catalysis Laboratory, Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Hong Kong, China
| | - Yuechang Wei
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Jian Liu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
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Legutko P, Stelmachowski P, Yu X, Zhao Z, Sojka Z, Kotarba A. Catalytic Soot Combustion─General Concepts and Alkali Promotion. ACS Catal 2023. [DOI: 10.1021/acscatal.2c05994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Affiliation(s)
- Piotr Legutko
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, 30-387 Krakow, Poland
| | - Paweł Stelmachowski
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, 30-387 Krakow, Poland
| | - Xuehua Yu
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, Liaoning 110034, China
| | - Zhen Zhao
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, Liaoning 110034, China
| | - Zbigniew Sojka
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, 30-387 Krakow, Poland
| | - Andrzej Kotarba
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, 30-387 Krakow, Poland
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Xu H, Zeng L, Cui L, Guo W, Gong C, Xue G. In-situ generation of platinum nanoparticles on LaCoO3 matrix for soot oxidation. J RARE EARTH 2021. [DOI: 10.1016/j.jre.2021.06.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Catalytic oxidation of diesel soot particulates over Pt substituted LaMn1-xPtxO3 perovskite oxides. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.06.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Neelapala SD, Patnaik H, Dasari H. Enhancement of soot oxidation activity of manganese oxide (Mn2
O3
) through doping by the formation of Mn1.9
M0.1
O3-δ
(M = Co, Cu, and Ni). ASIA-PAC J CHEM ENG 2018. [DOI: 10.1002/apj.2234] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Satya Deepika Neelapala
- Department of Chemical Engineering, Manipal Institute of Technology; Manipal Academy of Higher Education; Manipal Karnataka India
| | - Harsh Patnaik
- Department of Chemical Engineering, Manipal Institute of Technology; Manipal Academy of Higher Education; Manipal Karnataka India
| | - Harshini Dasari
- Department of Chemical Engineering, Manipal Institute of Technology; Manipal Academy of Higher Education; Manipal Karnataka India
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9
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Effect of Dopant Loading on the Structural and Catalytic Properties of Mn-Doped SrTiO3 Catalysts for Catalytic Soot Combustion. Catalysts 2018. [DOI: 10.3390/catal8020071] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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