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Cui Y, Chen Y, Cao Z, Xu L, He J, Zhu Z, Lian L, Luo X, Yang Z, Chen M. Oxidation of Toluene over the Pt-Embedded Mesoporous CeO 2 Hollow Nanospheres with Advanced Catalytic Performances. Inorg Chem 2024; 63:19972-19990. [PMID: 39377731 DOI: 10.1021/acs.inorgchem.4c03562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/09/2024]
Abstract
In this study, the novel Pt-embedded mesoporous CeO2 hollow nanospheres (Pt-MS-CeO2-H) with varying Pt contents (0.5-3.0 wt %) were facilely prepared. The Pt nanoparticles were one-pot embedded within the mesoporous shell of Pt-MS-CeO2-H and assisted with the reduction Ostwald ripening process. The traditional preparation methods often face challenges, such as the uneven distribution or aggregation of nanoparticles, as well as difficulty in maintaining high catalytic activity at low Pt content. Compared with the traditional supported Pt/MS-CeO2 catalyst, the embedding strategy facilitated precise control over the position, distribution, and uniformity of Pt nanoparticles within the CeO2 mesoporous shell. Additionally, the encapsulation process of Pt nanoparticles played a pivotal role in generating oxygen vacancies and activating surface chemical adsorption of oxygen. Resultantly, the toluene oxidation performances of 1Pt-MS-CeO2-H catalyst showed much lower T90 (171 °C) than 1Pt/MS-CeO2 (311 °C). To elucidate the underlying reasons, in situ diffuse reflectance infrared Fourier transform spectroscopy of toluene oxidation was employed to identify the reaction intermediates and pathways over these catalysts. In summary, the Pt-embedded mesoporous CeO2 hollow nanosphere catalysts were considered as potential candidates when designing high-performance toluene catalytic oxidation catalysts.
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Affiliation(s)
- Yan Cui
- Collaborative Innovation Centre of the Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, 210044 Nanjing, China
- Jiangsu Environmental Engineering Technology Co., Ltd., Nanjing 210004, China
| | - Yusheng Chen
- Academy of Environmental Planning and Design, Co. Ltd. Nanjing University, Nanjing 210024, China
| | - Zhen Cao
- College of Chemical Engineering and Environmental Chemistry, Weifang University, Weifang 261061, China
| | - Leilei Xu
- Collaborative Innovation Centre of the Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, 210044 Nanjing, China
| | - Jing He
- Collaborative Innovation Centre of the Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, 210044 Nanjing, China
| | - Zehui Zhu
- Collaborative Innovation Centre of the Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, 210044 Nanjing, China
| | - Linshui Lian
- Collaborative Innovation Centre of the Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, 210044 Nanjing, China
| | - Xue Luo
- Collaborative Innovation Centre of the Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, 210044 Nanjing, China
| | - Zhenya Yang
- Jiangsu Environmental Engineering Technology Co., Ltd., Nanjing 210004, China
| | - Mindong Chen
- Collaborative Innovation Centre of the Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, 210044 Nanjing, China
- School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230009, China
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Liao Y, He Y, Zhang B, Ma Y, Zhao M, Xu R, Cui H. Preparation of hollow double-layer Pt@CeO 2 nanospheres as oxidase mimetics for the colorimetric-fluorescent-SERS triple-mode detection of glutathione in serum. Talanta 2024; 276:126234. [PMID: 38749161 DOI: 10.1016/j.talanta.2024.126234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 03/06/2024] [Accepted: 05/08/2024] [Indexed: 06/14/2024]
Abstract
Glutathione (GSH) is an essential antioxidant in the human body, but its detection is difficult due to the interference of complex components in serum. Herein, hollow double-layer Pt@CeO2 nanospheres were developed as oxidase mimetics, and the light-assisted oxidase mimetics effects were found. The oxidase activity was enhanced significantly by utilizing the synergistic effect of Schottky junction and the localized surface plasmon resonance (LSPR) of Pt under UV light. A novel GSH colorimetric-fluorescent-SERS sensing platform was established, with the sensing performance notably boosted by using the light-assisted oxidase mimetics effects. This platform boasts an exceptionally low detection limit (LOD) of 0.084 μM, while the detection time was shortened from 10 min to just 2 min. The anti-interference detection with high recovery rate (96.84%-107.4 %) in real serum made it be promising for practical application.
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Affiliation(s)
- Yiquan Liao
- School of Materials Science and Engineering, Ocean University of China, 266100, Qingdao, PR China
| | - Yichang He
- School of Materials Science and Engineering, Ocean University of China, 266100, Qingdao, PR China
| | - Bin Zhang
- School of Materials Science and Engineering, Ocean University of China, 266100, Qingdao, PR China
| | - Ye Ma
- School of Materials Science and Engineering, Ocean University of China, 266100, Qingdao, PR China
| | - Minggang Zhao
- School of Materials Science and Engineering, Ocean University of China, 266100, Qingdao, PR China.
| | - Ruiqi Xu
- School of Materials Science and Engineering, Ocean University of China, 266100, Qingdao, PR China
| | - Hongzhi Cui
- School of Materials Science and Engineering, Ocean University of China, 266100, Qingdao, PR China
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Luo H, Ouyang M, Li H, Nie S, Xu D, Zhao T. Concave Gold Nanocubes Exhibit Growth-Etching Behavior: Unexpected Morphological Transformations. Inorg Chem 2024; 63:13110-13116. [PMID: 38940642 DOI: 10.1021/acs.inorgchem.4c02346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
Chemical equilibrium stands as a fundamental principle governing the dynamics of chemical systems. However, it may become intricate when it refers to nanomaterials because of their unique properties. Here, we invesitigated concave gold nanocubes (CGNs) subjected to an akaline Au3+/H2O2 solution, which exhibit both etching and growth in a monotonic solution. When CGNs were subjected to an increasingly alkaline Au3+/H2O2 solution, their dimensions increased from 107 to 199 nm and then decreased to 125 nm. Transmission electron microscopy (TEM) demonstrated that their morphology undergoes intricate alternations from concave to mutibranch and finally to concave again. Real-time ultraviolet-visible spectroscopy and time-dependent TEM also demonstrated reduction first and then oxidation in one solution. Among the nanomaterials, the obtained carpenterworm-like gold nanoparticles revealed the best catalytic performance in p-nitrophenol reduction by NaBH4, with a chemical rate that continues to increase until the reaction reaches completion. Growth leading to atomic dislocation, distortion, and exposure on nanoparticles and the redox of H2O2 plausibly account for the further etching due to the Ostwald ripening effect. Our study may spur more interest in the tuning of the properties, engineering, investigation, and design of new kinds of nanomaterials.
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Affiliation(s)
- Hongmei Luo
- National Engineering Laboratory for Rice and Byproducts Further Processing, Central South University of Forestry & Technology, Changsha 410004, China
| | - Min Ouyang
- National Engineering Laboratory for Rice and Byproducts Further Processing, Central South University of Forestry & Technology, Changsha 410004, China
| | - Hongchen Li
- National Engineering Laboratory for Rice and Byproducts Further Processing, Central South University of Forestry & Technology, Changsha 410004, China
| | - Saiqun Nie
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
| | - Dong Xu
- National Engineering Laboratory for Rice and Byproducts Further Processing, Central South University of Forestry & Technology, Changsha 410004, China
| | - Tian Zhao
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
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Bai Y, Yang X, Chen J, Shen B. The removal of toluene by thermoscatalytic oxidation using CeO 2-based catalysts:a review. CHEMOSPHERE 2024; 351:141253. [PMID: 38242517 DOI: 10.1016/j.chemosphere.2024.141253] [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: 12/01/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 01/21/2024]
Abstract
Volatile organic compounds (VOCs) pose a serious threat to human health and the ecological environment. Thermal catalytic oxidation based on cerium dioxide based (CeO2-based) catalysts is widely used in the degradation of toluene. However, new problems and challenges such as how to reduce the energy consumption during catalytic oxidation, improve the anti-poisoning performance of catalysts, and enhance the multi-species synergistic catalytic ability of catalysts continue to emerge. On this basis, we systematically summarize the current status of research progress on the thermocatalytic oxidation of toluene based on CeO2-based catalysts. Firstly, we summarized the rules on how to improve the catalytic performance and anti-poisoning performance of CeO2-based catalysts; Secondly, we discussed the effect of light reaction conditions on the thermal coupled catalytic oxidation of toluene; In addition to this, we explored the current status of synergistic multi-pollutant degradation, mainly of toluene; Finally, we summarized the mechanism of catalytic oxidation of toluene by combining theoretical simulation calculations, in-situ infrared analyses, and other means. We present the promising applications of CeO2-based catalysts in the catalytic oxidation of toluene, and hope that these summaries will provide an important reference for the catalytic treatment of VOCs.
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Affiliation(s)
- Yang Bai
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300401, China
| | - Xu Yang
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Jiateng Chen
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300401, China
| | - Boxiong Shen
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300401, China.
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Li G, Zhang M, Chen J, Li Q, Jia H. Combined effects of Pt nanoparticles and oxygen vacancies to promote photothermal catalytic degradation of toluene. JOURNAL OF HAZARDOUS MATERIALS 2023; 449:131041. [PMID: 36821902 DOI: 10.1016/j.jhazmat.2023.131041] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 02/17/2023] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
Pt/Mn-TiO2 photothermal catalysts with abundant oxygen vacancies are prepared by loading Pt onto a composite of MnOx and TiO2 using MIL-125 as precursor (abbreviated as Mn-TiO2) and subsequent hydrogen reduction treatment. Under light irradiation with intensity of 625 mW/cm2, the optimal 0.65Pt/Mn-TiO2 catalyst can achieve toluene conversion of 90.4 % and CO2 yield of 85.6 %, respectively, and maintain stable activity for at least 30 h in the presence of coke and water. The introduction of Pt nanoparticles improves the utilization of solar spectrum and facilitates the generation of more oxygen vacancies. The comparative experiments of photothermal catalysis and thermal catalysis further verify that light not only acts as a heat source but also enhances catalytic reaction through photocatalysis and photoactivation of lattice oxygen. In the follow-up work, catalytic oxidation under natural sunlight is performed on 0.65Pt/Mn-TiO2 to reach 75.0 % of toluene conversion, displaying a good practical application potential.
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Affiliation(s)
- Guanghui Li
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou 350108, China; Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Meng Zhang
- Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jin Chen
- Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qiang Li
- Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hongpeng Jia
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou 350108, China; Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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Zhao X, Wang S, Yang K, Yang X, Liu X. Controlled gold-palladium cores in ceria hollow spheres as nanoreactor for plasmon-enhanced catalysis under visible light irradiation. J Colloid Interface Sci 2023; 633:11-23. [PMID: 36427425 DOI: 10.1016/j.jcis.2022.11.061] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 11/04/2022] [Accepted: 11/12/2022] [Indexed: 11/18/2022]
Abstract
Visible-light-driven organic transformations boosting by localized surface plasmon resonance (LSPR) have been attracting considerable interests. Gold-palladium (Au-Pd) bimetallic nanoparticles (NPs) are considered as ideal plasmonic catalysts realizing efficient light-driven catalysis. Nevertheless, stability and adjustability of plasmonic Au-Pd NPs remain to be a challenging task. Herein, we designed the controlled Au-Pd cores in ceria (CeO2) hollow spheres (Au-Pd@h-CeO2) as nanoreactor for Suzuki cross-coupling reactions. Under visible light irradiation, the Au-Pd@h-CeO2 exhibited remarkable photocatalytic performance with a turnover frequency (TOF) value as high as 797 h-1. More impressively, the coupling reactions of aryl chlorides bearing electron-withdrawing groups proceeded better and afforded the corresponding desired products in good yields. Detailed structural, optical and photoelectrochemical characterizations unraveled that the enhanced photocatalytic efficiency of Au-Pd@h-CeO2 was attributed to the LSPR effect of controllable Au-Pd cores and their synergetic effect of hollow CeO2 shells. The merits of this hollow sphere architecture lied on as followed: (I) Incident light could be reflected and refracted between the inner cores and outer shells, which extended the trapping of incident light, and then enhanced the light harvesting efficiency; (II) the mesoporous architecture of CeO2 hollow spheres provided a huge specific surface area and numerous mesoporous channels, which could enhance the absorption of reactants and provided more active sites; (III) LSPR excitation of Au-Pd NPs and band-gap excitation of CeO2 simultaneously occurred under visible light illumination, inducing a more efficient separation and transfer of charge carriers. Furthermore, due to the confinment effect of CeO2 shells, the Au-Pd@h-CeO2 exhibited an excellent reusability after six cycles without significant deactivation of yield. Our findings provided a facile way to design highly efficient plasmonic-enhanced photocatalysts utilized for catalytic organic reactions.
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Affiliation(s)
- Xiaohua Zhao
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Siyao Wang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Kaixin Yang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xinya Yang
- Zhenjiang Key Laboratory of Functional Chemistry, Institute of Medicine & Chemical Engineering, Zhenjiang College, Zhenjiang 212028, China
| | - Xiang Liu
- Zhenjiang Key Laboratory of Functional Chemistry, Institute of Medicine & Chemical Engineering, Zhenjiang College, Zhenjiang 212028, China.
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