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Jain A, Tamhankar S, Jaiswal Y. Role of La-based perovskite catalysts in environmental pollution remediation. REV CHEM ENG 2023. [DOI: 10.1515/revce-2022-0034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Abstract
Since the advent of the industrial revolution, there has been a constant need of efficient catalysts for abatement of industrial toxic pollutants. This phenomenon necessitated the development of eco-friendly, stable, and economically feasible catalytic materials like lanthanum-based perovskite-type oxides (PTOs) having well-defined crystal structure, excellent thermal, and structural stability, exceptional ionic conductivity, redox behavior, and high tunability. In this review, applicability of La-based PTOs in remediation of pollutants, including CO, NO
x
and VOCs was addressed. A framework for rationalizing reaction mechanism, substitution effect, preparation methods, support, and catalyst shape has been discussed. Furthermore, reactant conversion efficiencies of best PTOs have been compared with noble-metal catalysts for each application. The catalytic properties of the perovskites including electronic and structural properties have been extensively presented. We highlight that a robust understanding of electronic structure of PTOs will help develop perovskite catalysts for other environmental applications involving oxidation or redox reactions.
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Affiliation(s)
- Anusha Jain
- Chemical Engineering Department , Indian Institute of Technology Delhi , New Delhi 110016 , India
| | - Sarang Tamhankar
- Chemical Engineering Department , Institute of Chemical Technology Mumbai , Maharastra 400019 , India
| | - Yash Jaiswal
- Chemical Engineering Department, Faculty of Technology , Dharmsinh Desai University Nadiad , Gujarat 387001 , India
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Zhou F, Zhao Z, Xu M, Wang T, Yang H, Wang R, Wang J, Li H, Feng M. The Spin Modulation Stimulated Efficient Electrocatalytic Oxygen Evolution Reaction over LaCoO 3 Perovskite. Chemistry 2022; 28:e202104157. [PMID: 35147254 DOI: 10.1002/chem.202104157] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Indexed: 02/05/2023]
Abstract
Perovskite is a promising non-noble catalyst and has been widely investigated for the electrochemical oxygen evolution reaction (OER). However, there is still serious lack of valid approaches to further enhance their catalytic performance. Herein, we propose a spin state modulation strategy to improve the OER electrocatalytic activity of typical perovskite material of LaCoO3 . Specifically, the electronic configuration transition was realized by a simple high temperature thermal reduction process. M-H hysteresis loop results reveal that the reduction treatment can produce more unpaired electrons in 3d orbit by promoting the electron transitions of Co from low spin state to high spin state, and thus lead to the increase of the spin polarization. Electrochemical measurements show that the catalytic performance of LaCoO3 is strongly dependent on its electronic configuration. With the optimized reduction treatment, the overpotential for the OER process in 0.5 M KOH electrolyte solution at 10 mA cm-2 current density was 396 mV, significantly lower than that of the original state. Furthermore, it can mediate efficient OER with an overpotential of 383 mV under an external magnetic field, which is attributed to the appropriate electron filling. Our results show that electron spin state regulation is a new way to boost the OER electrocatalytic activity.
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Affiliation(s)
- Fangping Zhou
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, 130103, P. R. China
| | - Zhao Zhao
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, 130103, P. R. China
| | - Ming Xu
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, 130103, P. R. China
| | - Ting Wang
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, 130103, P. R. China
| | - Huiru Yang
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, 130103, P. R. China
| | - Rong Wang
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, 130103, P. R. China
| | - Jiahui Wang
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, 130103, P. R. China
| | - Haibo Li
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, 130103, P. R. China
| | - Ming Feng
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, 130103, P. R. China
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Teng Z, Yun J, Du L, Huang J, Hao Q, Dou B, Hui KN, Bin F. Catalytic oxidation of high-concentration CO over La 0.9M 0.1CoO 3 (M = Ce, Sr) facilely promoted by glucose. NEW J CHEM 2021. [DOI: 10.1039/d1nj04050b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Addition of glucose and introduction of Ce/Sr into LaCoO3 can create more oxygen vacancies and Co3+ active sites, facilitating the catalytic activity for CO oxidation.
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Affiliation(s)
- Zihao Teng
- Tianjin University of Science & Technology, Tianjin 300457, P. R. China
- State Key Laboratory of High-Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Jianyu Yun
- Tianjin University of Science & Technology, Tianjin 300457, P. R. China
| | - Libin Du
- Tianjin University of Science & Technology, Tianjin 300457, P. R. China
| | - Junqin Huang
- State Key Laboratory of High-Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Qinglan Hao
- Tianjin University of Science & Technology, Tianjin 300457, P. R. China
| | - Baojuan Dou
- Tianjin University of Science & Technology, Tianjin 300457, P. R. China
| | - Kwun Nam Hui
- Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, P. R. China
| | - Feng Bin
- State Key Laboratory of High-Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, P. R. China
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