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Zhu P, Hu Z, Chen S. Praseodymium-Doped Cr 2O 3 Prepared by In Situ Pyrolysis of MIL-101(Cr) for Highly Efficient Catalytic Oxidation of 1,2-Dichloroethane. Molecules 2024; 29:3417. [PMID: 39064995 PMCID: PMC11280410 DOI: 10.3390/molecules29143417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 06/19/2024] [Accepted: 07/19/2024] [Indexed: 07/28/2024] Open
Abstract
The development of economical catalysts that exhibit both high activity and durability for chlorinated volatile organic compounds (CVOCs) elimination remains a challenge. The oxidizing and acidic sites play a crucial role in the oxidation process of CVOCs; herein, praseodymium (Pr) was introduced into CrOx catalysts via in situ pyrolysis of MIL-101(Cr). With the decomposition of the ligand, a mixed micro-mesoporous structure was formed within the M-Cr catalyst, thereby reducing the contact resistance between catalyst active sites and the 1,2-dichloroethane molecule. Moreover, the synergistic interaction between chromium and praseodymium facilitates Oβ species and acidic sites, significantly enhancing the low-temperature catalytic performance and durability of the M-PrCr catalyst for 1,2-dichloroethane (1,2-DCE) oxidation. The M-30PrCr catalyst possess enhanced active oxygen sites and acid sites, thereby exhibiting the highest catalytic activity and stability. This study may provide a novel and promising strategy for practical applications in the elimination of 1,2-DCE.
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Affiliation(s)
| | | | - Shouwen Chen
- School of Biological and Environmental Engineering, Nanjing University of Science & Technology, Nanjing 210094, China; (P.Z.); (Z.H.)
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2
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Peng R, Wen S, Zhang H, Zhang Y, Sun Y, Liang Z, Ye D. Catalytic Oxidation of Toluene over Pt/CeO 2 Catalysts: A Double-Edged Sword Effect of Strong Metal-Support Interaction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:13984-13994. [PMID: 38913777 DOI: 10.1021/acs.langmuir.4c01209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Strong metal-support interaction (SMSI), which has drawn widespread attention in heterogeneous catalysis, is thought to significantly affect the catalytic performance for volatile organic chemical (VOC) abatement. In the present study, strong interactions between platinum and ceria are constructed by modulating the oxygen vacancy concentration of CeO2 through a NaBH4 reduction method. For a catalyst with higher content of oxygen vacancy, more electrons would transfer from ceria to Pt, which is attributed to the stronger effect of SMSI. The obtained electron-richer Pt sites exhibit higher ability for toluene activation, contributing to better performance for toluene oxidation. On the other hand, the stronger metal-support interaction would facilitate CeOx species migrating to the Pt nanoparticle surface and forming an encapsulated structure. Smaller Pt dispersion leads to fewer sites for toluene adsorption and activation, which is to the disadvantage of the reaction. Therefore, taking the negative and positive effects together, the Pt/CeO2-0.5 catalyst has the highest catalytic performance for toluene abatement. Our study provides new insights into strong metal-support interaction on toluene oxidation and contributes to designing noble metal catalysts for VOC abatement.
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Affiliation(s)
- Ruosi Peng
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Shuxian Wen
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Haozhi Zhang
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - You Zhang
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Yuhai Sun
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Zheng Liang
- CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Daiqi Ye
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China
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3
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Jia P, Wang M, Ma C, Chen D, Zhang Y, Liu J. Quantum-level investigation of air decomposed pollutants gas sensor (Pd-modified g-C 3N 4) influenced by micro-water content. CHEMOSPHERE 2024; 358:142198. [PMID: 38697566 DOI: 10.1016/j.chemosphere.2024.142198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/24/2024] [Accepted: 04/28/2024] [Indexed: 05/05/2024]
Abstract
In the electrical industry, there are many hazardous gases that pollute the environment and even jeopardize human health, so timely detection and effective control of these hazardous gases is of great significance. In this work, the gas-sensitive properties of Pd-modified g-C3N4 interface for each hazardous gas molecule were investigated from a microscopic viewpoint, taking the hazardous gases (CO, NOx) that may be generated in the power industry as the detection target. Then, the performance of Pd-modifiedg-C3N4 was evaluated for practical applications as a gas sensor material. Novelly, an unconventional means was designed to briefly predict the effect of humidity on the adsorption properties of this sensor material. The final results found that Pd-modified g-C3N4 is most suitable as a potential gas-sensitizing material for NO2 gas sensors, followed by CO. Interestingly, Pd-modified g-C3N4 is less suitable as a potential gas-sensitizing material for NO gas sensors, but has the potential to be used as a NO cleaner (adsorbent). Unconventional simulation explorations of humidity effects show that in practical applications Pd-modified g-C3N4 remains a promising material for gas sensing in specific humidity environments. This work reveals the origin of the excellent properties of Pd-modified g-C3N4 as a gas sensor material and provides new ideas for the detection and treatment of these three hazardous gases.
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Affiliation(s)
- Pengfei Jia
- Data Recovery Key Laboratory of Sichuan Province, Neijiang Normal University, Neijiang 641100, China; School of Electrical Engineering, Guangxi University, Nanning 530004, China
| | - Mingxiang Wang
- School of Electrical Engineering, Guangxi University, Nanning 530004, China; Guangxi Key Laboratory of Intelligent Control and Maintenance of Power Equipment, Guangxi University, Nanning 530004, China.
| | - Changyou Ma
- Data Recovery Key Laboratory of Sichuan Province, Neijiang Normal University, Neijiang 641100, China
| | - Dachang Chen
- School of Electrical and Electronic Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Yiyi Zhang
- School of Electrical Engineering, Guangxi University, Nanning 530004, China
| | - Jiefeng Liu
- School of Electrical Engineering, Guangxi University, Nanning 530004, China
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4
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Fang S, Sun Y, Xu J, Zhang T, Wu Z, Li J, Gao E, Wang W, Zhu J, Dai L, Liu W, Zhang B, Zhang J, Yao S. Revealing the intrinsic nature of Ni-, Mn-, and Y-doped CeO 2 catalysts with positive, additive, and negative effects on CO oxidation using operando DRIFTS-MS. Dalton Trans 2023; 52:16911-16919. [PMID: 37927054 DOI: 10.1039/d3dt03001f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
The catalytic activity of a transition metal (host) oxide can be influenced by doping with a second cation (dopant), but the key factors dominating the activity of the doped catalyst are still controversial. Herein, CeO2 doped with Ni, Mn, and Y catalysts prepared using aerosol pyrolysis were used to demonstrate the positive, negative, and additive effects on CO oxidation as a model reaction. Various characterization results indicated that Ni, Mn, and Y had been successfully doped into the CeO2 lattice. The catalytic activities of each catalyst for CO conversion were in the order of Ni-CeO2 > Mn-CeO2 > CeO2 > Y-CeO2. Operando DRIFTS-MS and various characterization methods were applied to reveal the intrinsic nature of the doping effects. The accumulation rate of the surface bidentate carbonates determined the CO oxidation. A definition to evaluate the doping effect was proposed, which is anticipated to be useful for developing a rational catalyst with a high CO oxidation activity. The CO oxidation reactivities displayed strong correlations with the surface factors obtained from operando DRIFTS-MS analysis and the structure factors from XPS and Raman analyses.
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Affiliation(s)
- Shiyu Fang
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China.
| | - Yan Sun
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China.
| | - Jiacheng Xu
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China.
- School of Material Science and Engineering, Changzhou University, Changzhou 213164, China
| | - Tiantian Zhang
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China.
| | - Zuliang Wu
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China.
- Key Laboratory of Advanced Plasma Catalysis Engineering for China Petrochemical Industry, Changzhou 213164, China
| | - Jing Li
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China.
- Key Laboratory of Advanced Plasma Catalysis Engineering for China Petrochemical Industry, Changzhou 213164, China
| | - Erhao Gao
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China.
- Key Laboratory of Advanced Plasma Catalysis Engineering for China Petrochemical Industry, Changzhou 213164, China
| | - Wei Wang
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China.
- Key Laboratory of Advanced Plasma Catalysis Engineering for China Petrochemical Industry, Changzhou 213164, China
| | - Jiali Zhu
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China.
- Key Laboratory of Advanced Plasma Catalysis Engineering for China Petrochemical Industry, Changzhou 213164, China
| | - Lianxin Dai
- Jiangxi Xintai Functional Materials Technology Co., Ltd., Ji'an 343100, China
| | - Weihua Liu
- Jiangxi Xintai Functional Materials Technology Co., Ltd., Ji'an 343100, China
| | - Buhe Zhang
- Jiangxi Xintai Functional Materials Technology Co., Ltd., Ji'an 343100, China
| | - Junwei Zhang
- Jiangxi Xintai Functional Materials Technology Co., Ltd., Ji'an 343100, China
| | - Shuiliang Yao
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China.
- School of Material Science and Engineering, Changzhou University, Changzhou 213164, China
- Key Laboratory of Advanced Plasma Catalysis Engineering for China Petrochemical Industry, Changzhou 213164, China
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5
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Li C, Zhang Z, Zhou L, Fang B, Ni J, Lin J, Lin B, Jiang L. Boosting the ammonia synthesis activity of ceria-supported Ru catalysts achieved through trace Pr addition. Chem Commun (Camb) 2023; 59:11552-11555. [PMID: 37681252 DOI: 10.1039/d3cc03130f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
The amount of dopant used in conventional cases for improving catalytic performance is higher than 5%. In this work, a strategy to enhance the ammonia synthesis performance of a Ru/CeO2 catalyst by using trace Pr (0.1 mol%) is reported. Owing to the improvement of oxygen defects, Ce3+ concentration and interfaced Ru species, the hydrogen adsorption was enhanced, and the desorption of hydrogen species would be promoted. As a result, Ru/CeO2 with 0.1 mol% Pr shows 1.4 times higher ammonia synthesis rate and excellent stability compared to Ru/CeO2 or the sample with high Pr loading (50 mol% Pr). This study provides a new idea for the design of high-efficiency ammonia synthesis catalysts.
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Affiliation(s)
- Chunyan Li
- Key Laboratory of Low-Dimensional Materials and Big Data, School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, China
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, China.
| | - Zecheng Zhang
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, China.
| | - Lingyun Zhou
- Key Laboratory of Low-Dimensional Materials and Big Data, School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, China
| | - Biyun Fang
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, China.
| | - Jun Ni
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, China.
| | - Jianxin Lin
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, China.
| | - Bingyu Lin
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, China.
| | - Lilong Jiang
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, China.
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6
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Xue L, Ren Y, Li Y, Xie W, Chen K, Zou Y, Wu L, Deng Y. Pt-Pd Nanoalloys Functionalized Mesoporous SnO 2 Spheres: Tailored Synthesis, Sensing Mechanism, and Device Integration. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302327. [PMID: 37259638 DOI: 10.1002/smll.202302327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 05/17/2023] [Indexed: 06/02/2023]
Abstract
Methane (CH4 ), as the vital energy resource and industrial chemicals, is highly flammable and explosive for concentrations above the explosive limit, triggering potential risks to personal and production safety. Therefore, exploiting smart gas sensors for real-time monitoring of CH4 becomes extremely important. Herein, the Pt-Pd nanoalloy functionalized mesoporous SnO2 microspheres (Pt-Pd/SnO2 ) were synthesized, which show uniform diameter (≈500 nm), high surface area (40.9-56.5 m2 g-1 ), and large mesopore size (8.8-15.8 nm). The highly dispersed Pt-Pd nanoalloys are confined in the mesopores of SnO2 , causing the generation ofoxygen defects and increasing the carrier concentration of sensitive materials. The representative Pt1 -Pd4 /SnO2 exhibits superior CH4 sensing performance with ultrahigh response (Ra /Rg = 21.33 to 3000 ppm), fast response/recovery speed (4/9 s), as well as outstanding stability. Spectroscopic analyses imply that such an excellent CH4 sensing process involves the fast conversion of CH4 into formic acid and CO intermediates, and finally into CO2 . Density functional theory (DFT) calculations reveal that the attractive covalent bonding interaction and rapid electron transfer between the Pt-Pd nanoalloys and SnO2 support, dramatically promote the orbital hybridization of Pd4 sites and adsorbed CH4 molecules, enhancing the catalytic activation of CH4 over the sensing layer.
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Affiliation(s)
- Lingxiao Xue
- Department of Chemistry, Department of Gastroenterology and Hepatology, Zhongshan Hospital, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai, 200433, China
- State Key Lab of Transducer Technology Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Yuan Ren
- Department of Chemistry, Department of Gastroenterology and Hepatology, Zhongshan Hospital, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai, 200433, China
| | - Yanyan Li
- Department of Chemistry, Department of Gastroenterology and Hepatology, Zhongshan Hospital, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai, 200433, China
| | - Wenhe Xie
- Department of Chemistry, Department of Gastroenterology and Hepatology, Zhongshan Hospital, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai, 200433, China
| | - Keyu Chen
- Department of Chemistry, Department of Gastroenterology and Hepatology, Zhongshan Hospital, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai, 200433, China
| | - Yidong Zou
- Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China
| | - Limin Wu
- Institute of Energy and Materials Chemistry, Inner Mongolia University, 235 West University Street, Hohhot, 010021, China
| | - Yonghui Deng
- Department of Chemistry, Department of Gastroenterology and Hepatology, Zhongshan Hospital, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai, 200433, China
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7
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Wang H, Zhang D, Zhang R, Ma H, Zhang H, Yao R, Liang M, Zhao Y, Miao Z. Dealloying Synthesis of Bimetallic (Au-Pd)/CeO 2 Catalysts for CO Oxidation. ACS OMEGA 2023; 8:11889-11896. [PMID: 37033829 PMCID: PMC10077571 DOI: 10.1021/acsomega.2c07191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 02/02/2023] [Indexed: 06/19/2023]
Abstract
The nanorod-structured (Au-Pd)/CeO2 catalysts with different Au/Pd ratios were prepared from Al-Ce-Au-Pd precursor alloys through combined dealloying and calcination treatment. XRD, SEM, TEM, XPS, Raman spectroscopy, and N2 adsorption-desorption measurements were applied to test the structure and physicochemical properties of samples. Catalytic evaluation results imply that the (Pd0.15-Au0.15)/CeO2 catalyst calcined at 500 °C possesses optimal catalytic activity for CO oxidation when compared with other catalysts with different Au/Pd ratios or (Pd0.15-Au0.15)/CeO2 calcined at other temperatures, whose 50% and 99% reaction temperature can be reached as low as 50 and 85 °C, respectively. This superior catalytic property is attributed to their robust nanorod structure and the introduction of noble bimetal Pd and Au, which can construct a nanoscale interface to access fast electron motion, thus enhancing catalytic efficiency.
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8
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Wang H, Yao R, Zhang R, Ma H, Gao J, Liang M, Zhao Y, Miao Z. CeO 2-Supported TiO 2-Pt Nanorod Composites as Efficient Catalysts for CO Oxidation. Molecules 2023; 28:molecules28041867. [PMID: 36838854 PMCID: PMC9959209 DOI: 10.3390/molecules28041867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 02/04/2023] [Accepted: 02/09/2023] [Indexed: 02/18/2023] Open
Abstract
Supported Pt-based catalysts have been identified as highly selective catalysts for CO oxidation, but their potential for applications has been hampered by the high cost and scarcity of Pt metals as well as aggregation problems at relatively high temperatures. In this work, nanorod structured (TiO2-Pt)/CeO2 catalysts with the addition of 0.3 at% Pt and different atomic ratios of Ti were prepared through a combined dealloying and calcination method. XRD, XPS, SEM, TEM, and STEM measurements were used to confirm the phase composition, surface morphology, and structure of synthesized samples. After calcination treatment, Pt nanoparticles were semi-inlayed on the surface of the CeO2 nanorod, and TiO2 was highly dispersed into the catalyst system, resulting in the formation of (TiO2-Pt)/CeO2 with high specific surface area and large pore volume. The unique structure can provide more reaction path and active sites for catalytic CO oxidation, thus contributing to the generation of catalysts with high catalytic activity. The outstanding catalytic performance is ascribed to the stable structure and proper TiO2 doping as well as the combined effect of Pt, TiO2, and CeO2. The research results are of importance for further development of high catalytic performance nanoporous catalytic materials.
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Affiliation(s)
- Haiyang Wang
- Xi’an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi’an 710123, China
| | - Ruijuan Yao
- Xi’an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi’an 710123, China
| | - Ruiyin Zhang
- Xi’an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi’an 710123, China
| | - Hao Ma
- Xi’an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi’an 710123, China
| | - Jianjing Gao
- Xi’an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi’an 710123, China
| | - Miaomiao Liang
- School of Materials Science and Engineering, Xi’an Polytechnic University, Xi’an 710048, China
| | - Yuzhen Zhao
- Xi’an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi’an 710123, China
| | - Zongcheng Miao
- Xi’an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi’an 710123, China
- School of Artificial Intelligence, Optics and Electronics (iOPEN), Northwestern Polytechnical University, Xi’an 710072, China
- Correspondence:
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9
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Ahn SY, Jang WJ, Shim JO, Jeon BH, Roh HS. CeO 2-based oxygen storage capacity materials in environmental and energy catalysis for carbon neutrality: extended application and key catalytic properties. CATALYSIS REVIEWS 2023. [DOI: 10.1080/01614940.2022.2162677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Seon-Yong Ahn
- Department of Environmental and Energy Engineering, Yonsei University, Wonju-si, South Korea
| | - Won-Jun Jang
- Department of Environmental and Energy Engineering, Kyungnam University, Changwon-si, South Korea
| | - Jae-Oh Shim
- Department of Chemical Engineering, Wonkwang University, Iksan-si, South Korea
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, South Korea
| | - Hyun-Seog Roh
- Department of Environmental and Energy Engineering, Yonsei University, Wonju-si, South Korea
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Wang H, Duan W, Zhang R, Ma H, Ma C, Liang M, Zhao Y, Miao Z. Fabrication and catalytic properties of nanorod-shaped (Pt-Pd)/CeO 2 composites. RSC Adv 2023; 13:2811-2819. [PMID: 36756418 PMCID: PMC9847492 DOI: 10.1039/d2ra07395a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 12/19/2022] [Indexed: 01/19/2023] Open
Abstract
Nanorod-supported (Pt-Pd)/CeO2 catalysts were synthesized by a simple method of dealloying Al91.7Ce8 Pt X Pd0.3-X (X = 0, 0.075, 0.1, 0.15, 0.2, 0.3) alloy ribbons. SEM and TEM characterization implied that after calcination treatment, the achieved resultants exhibited interspersed nanorod structures with a rich distribution of nanopores. Catalytic tests showed that the (Pt0.1-Pd0.2)/CeO2 catalyst calcined at 300 °C exhibited the highest catalyst activity for CO oxidation when compared with other catalysts prepared at different noble metal ratios or calcined at other temperatures, whose complete reaction temperature was as low as 100 °C. The outstanding catalytic performance is ascribed to the stable framework structure, rich gas pathways and collaborative effect between the noble Pt and Pd bimetals.
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Affiliation(s)
- Haiyang Wang
- Xi'an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device, Key Laboratory of Organic Polymer Photoelectric Materials, School of Electronic Information, Xijing UniversityXi'an710123P. R. China
| | - Wenyuan Duan
- Xi'an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device, Key Laboratory of Organic Polymer Photoelectric Materials, School of Electronic Information, Xijing UniversityXi'an710123P. R. China
| | - Ruiyin Zhang
- Xi'an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device, Key Laboratory of Organic Polymer Photoelectric Materials, School of Electronic Information, Xijing UniversityXi'an710123P. R. China
| | - Hao Ma
- Xi'an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device, Key Laboratory of Organic Polymer Photoelectric Materials, School of Electronic Information, Xijing UniversityXi'an710123P. R. China
| | - Cheng Ma
- Xi'an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device, Key Laboratory of Organic Polymer Photoelectric Materials, School of Electronic Information, Xijing UniversityXi'an710123P. R. China
| | - Miaomiao Liang
- School of Materials Science and Engineering, Xi'an Polytechnic UniversityXi'anShaanxi710048P. R. China
| | - Yuzhen Zhao
- Xi'an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device, Key Laboratory of Organic Polymer Photoelectric Materials, School of Electronic Information, Xijing UniversityXi'an710123P. R. China
| | - Zongcheng Miao
- Xi'an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device, Key Laboratory of Organic Polymer Photoelectric Materials, School of Electronic Information, Xijing University Xi'an 710123 P. R. China.,School of Artificial Intelligence, Optics and Electronics (iOPEN), Northwestern Polytechnical University Xi'an Shaanxi 710072 P. R. China
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Xiao Y, Tao Y, Jiang Y, Wang J, Zhang W, Liu Y, Zhang J, Wu X, Liu Z. Construction of core–shell CeO2 nanorods/SnIn4S8 nanosheets heterojunction with rapid spatial electronic migration for effective wastewater purification and H2O2 production. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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12
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Wang Y, Wang M. Recent progresses on single-atom catalysts for the removal of air pollutants. Front Chem 2022; 10:1039874. [DOI: 10.3389/fchem.2022.1039874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 10/10/2022] [Indexed: 11/13/2022] Open
Abstract
The booming industrialization has aggravated emission of air pollutants, inflicting serious harm on environment and human health. Supported noble-metals are one of the most popular catalysts for the oxidation removal of air pollutants. Unfortunately, the high price and large consumption restrict their development and practical application. Single-atom catalysts (SACs) emerge and offer an optimizing approach to address this issue. Due to maximal atom utilization, tunable coordination and electron environment and strong metal-support interaction, SACs have shown remarkable catalytic performance on many reactions. Over the last decade, great potential of SACs has been witnessed in the elimination of air pollutants. In this review, we first briefly summarize the synthesis methods and modulation strategies together with the characterization techniques of SACs. Next, we highlight the application of SACs in the abatement of air pollutants including CO, volatile organic compounds (VOCs) and NOx, unveiling the related catalytic mechanism of SACs. Finally, we propose the remaining challenges and future perspectives of SACs in fundamental research and practical application in the field of air pollutant removal.
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Cai T, Teng Z, Wen Y, Zhang H, Wang S, Fu X, Song L, Li M, Lv J, Zeng Q. Single-atom site catalysts for environmental remediation: Recent advances. JOURNAL OF HAZARDOUS MATERIALS 2022; 440:129772. [PMID: 35988491 DOI: 10.1016/j.jhazmat.2022.129772] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 08/09/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
Single-atom site catalysts (SACs) can maximize the utilization of active metal species and provide an attractive way to regulate the activity and selectivity of catalytic reactions. The adjustable coordination configuration and atomic structure of SACs enable them to be an ideal candidate for revealing reaction mechanisms in various catalytic processes. The minimum use of metals and relatively tight anchoring of the metal atoms significantly reduce leaching and environmental risks. Additionally, the unique physicochemical properties of single atom sites endow SACs with superior activity in various catalytic processes for environmental remediation (ER). Generally, SACs are burgeoning and promising materials in the application of ER. However, a systematic and critical review on the mechanism and broad application of SACs-based ER is lacking. Herein, we review emerging studies applying SACs for different ERs, such as eliminating organic pollutants in water, removing volatile organic compounds, purifying automobile exhaust, and others (hydrodefluorination and disinfection). We have summarized the synthesis, characterization, reaction mechanism and structural-function relationship of SACs in ER. In addition, the perspectives and challenges of SACs for ER are also analyzed. We expect that this review can provide constructive inspiration for discoveries and applications of SACs in environmental catalysis in the future.
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Affiliation(s)
- Tao Cai
- School of Resources & Environment and Safety Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Zhenzhen Teng
- College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Yanjun Wen
- School of Resources & Environment and Safety Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Huayang Zhang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Shaobin Wang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.
| | - Xijun Fu
- School of Resources & Environment and Safety Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Lu Song
- School of Resources & Environment and Safety Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Mi Li
- School of Resources & Environment and Safety Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Junwen Lv
- School of Resources & Environment and Safety Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Qingyi Zeng
- School of Resources & Environment and Safety Engineering, University of South China, Hengyang, Hunan 421001, China.
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14
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Li F, Lei L, Yi J, Dou C, Meng Z, Wang P. Performance, Structure and Mechanisms of Pd Catalyst Supported on M-Doped (M = La, Ba and K) CeO2 for Methane Oxidation. Catal Letters 2022. [DOI: 10.1007/s10562-022-04124-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Pd Supported on Pr-Rich Cerium–Zirconium–Praseodymium Mixed Oxides for Propane and CO Oxidation. Catalysts 2022. [DOI: 10.3390/catal12080827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The activity of emission control catalysts must be improved in urban mode at low temperatures. One possible way is to tailor the metal-support interaction between platinum group metals (PGMs) and ceria to stabilize small clusters or single atoms, optimizing the utilization of costly PGMs. In this study, a small loading of Pd (<0.2 wt. %) was dispersed on Pr-rich cerium–zirconium–praseodymium mixed oxides (CZP45: Ce0.45Zr0.10Pr0.45O2-x). After the initial calcination at 800 °C, Pd was mainly in the form of dispersed isolated cations which were found to be efficient for low-temperature CO oxidation but inactive for propane combustion. Nevertheless, a pre-reduction step can trigger the formation of Pd nanoparticles and promote the propane oxidation. Pd nanoparticles, formed during the reduction step, coupled with the high oxygen mobility of CZP45, lead to outstanding catalytic activity for propane oxidation starting from 250 °C. However, the re-oxidation of Pd nanoparticles and their partial re-dispersion, promoted by the fast oxygen mobility of the mixed oxide, rapidly deactivate the catalysts in lean conditions.
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16
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Zhu Y, Chen C, Cheng P, Ma J, Yang W, Yang W, Peng Y, Huang Y, Zhang S, Seong G. Recent advances in hydrothermal synthesis of facet-controlled CeO 2-based nanomaterials. Dalton Trans 2022; 51:6506-6518. [PMID: 35380566 DOI: 10.1039/d2dt00269h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CeO2-based nanomaterials have received tremendous attention due to their variety of applications. This paper is focused on the recent advances in facet-controlled CeO2-based nanomaterials by the hydrothermal method. CeO2-based nanomaterials with controllable size and exposed facets can be prepared by adjusting the reaction parameters. Moreover, doping and loading metals can improve the oxygen storage capacity (OSC) of CeO2 and its catalytic activity. Various research studies on catalytic applications such as CO oxidation, water-gas shift reaction (WGSR), decomposition of hydrocarbons, and photocatalytic reaction have been carried out to exhibit the high potential of facet-controlled CeO2 nanomaterials. This review will provide readers with various ideas for facet-controlled CeO2-based nanomaterials.
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Affiliation(s)
- Yuanzheng Zhu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Chunguang Chen
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Ping Cheng
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Jie Ma
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Weibang Yang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Weixin Yang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Yaru Peng
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Yiguo Huang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Shuping Zhang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Gimyeong Seong
- New Industry Creation Hatchery Center, Tohoku University, 6-6-10, Aoba, Aramaki, Aoba-ku, Sendai 980-8577, Japan.
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