1
|
Xiao B, Wu G, Wang T, Wei Z, Xie Z, Sui Y, Qi J, Wei F, Zhang X, Tang LB, Zheng JC. Enhanced Li-Ion Diffusion and Cycling Stability of Ni-Free High-Entropy Spinel Oxide Anodes with High-Concentration Oxygen Vacancies. ACS APPLIED MATERIALS & INTERFACES 2023; 15:2792-2803. [PMID: 36606677 DOI: 10.1021/acsami.2c12374] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
High-entropy oxide (HEO) is an emerging type of anode material for lithium-ion batteries with excellent properties, where high-concentration oxygen vacancies can effectively enhance the diffusion coefficient of lithium ions. In this study, Ni-free spinel-type HEOs ((FeCoCrMnZn)3O4 and (FeCoCrMnMg)3O4) were prepared via ball milling, and the effects of zinc and magnesium on the concentration of oxygen vacancy (OV), lithium-ion diffusion coefficient (DLi+), and electrochemical performance of HEOs were investigated. Ab initio calculations show that the addition of zinc narrows down the band gap and thus improves the electrical conductivity. X-ray photoelectron spectroscopy (XPS) results show that (FeCoCrMnZn)3O4 (42.7%) and (FeCoCrMnMg)3O4 (42.5%) have high OV concentration. During charge/discharge, the OV concentration of (FeCoCrMnZn)3O4 is higher than that of (FeCoCrMnMg)3O4. The galvanostatic intermittent titration technique (GITT) results show that the DLi+ value of (FeCoCrMnZn)3O4 is higher than that of (FeCoCrMnMg)3O4 during charge and discharge. All of that can improve its specific discharge capacity and enhance its cycle stability. (FeCoCrMnZn)3O4 achieved a discharge capacity of 828.6 mAh g-1 at 2.0 A g-1 after 2000 cycles. This work provides a deep understanding of the structure and performance of HEO.
Collapse
Affiliation(s)
- Bin Xiao
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou221116, P. R. China
| | - Gang Wu
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou221116, P. R. China
| | - Tongde Wang
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou221116, P. R. China
| | - Zhengang Wei
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou221116, P. R. China
| | - Zelin Xie
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou221116, P. R. China
| | - Yanwei Sui
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou221116, P. R. China
| | - Jiqiu Qi
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou221116, P. R. China
| | - Fuxiang Wei
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou221116, P. R. China
| | - Xiahui Zhang
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington99164, United States
| | - Lin-Bo Tang
- School of Metallurgy and Environment, Central South University, Changsha410083, P. R. China
| | - Jun-Chao Zheng
- School of Metallurgy and Environment, Central South University, Changsha410083, P. R. China
| |
Collapse
|
2
|
Chen W, Zou R, Wang X. Toward an Atomic-Level Understanding of the Catalytic Mechanism of Selective Catalytic Reduction of NO x with NH 3. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Weibin Chen
- School of Materials Science and Engineering, Peking University, Beijing100871, People’s Republic of China
| | - Ruqiang Zou
- School of Materials Science and Engineering, Peking University, Beijing100871, People’s Republic of China
| | - Xidong Wang
- School of Materials Science and Engineering, Peking University, Beijing100871, People’s Republic of China
| |
Collapse
|
3
|
Chen Y, Yao K, Zhang X, Shen B, Smith RL, Guo H. Siloxane-modified MnO x catalyst for oxidation of coal-related o-xylene in presence of water vapor. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129109. [PMID: 35594674 DOI: 10.1016/j.jhazmat.2022.129109] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/02/2022] [Accepted: 05/06/2022] [Indexed: 06/15/2023]
Abstract
In coal-combustion energy production, presence of water vapor in flue gas causes catalyst deactivation and leads to the release of large quantities of volatile organic compounds (VOCs). In this study, design of a low-temperature, hydrophobic catalyst for flue gas purification was achieved by modifying support material with inorganic siloxane. Introduction of 5% water vapor into simulated flue gas at 300 °C reduced oxidation efficiency for o-xylene removal by 26% with unmodified MnOx/γ-Al2O3 catalyst, whereas with modified catalyst MnOx-Si0.9/γ-Al2O3 oxidation efficiency was reduced by only 5%. MnOx-Si0.9/γ-Al2O3 exhibited stable catalytic efficiency for o-xylene gas oxidation containing water vapor for over 200 min. Water-resistance of the catalyst was effective for removal of multi-coal combustion pollutants (Hg0 and NO) and moreover, hydrophobicity of the catalyst led to a reduction in surface sulfate deposition, thereby lowering toxicity of SO2 from simulated flue gas. DRIFTS analysis showed that the hydrophobic catalyst surface not only reduces water adsorption, but also promotes water volatilization. Based on molecular adsorption energies, catalyst support modification with siloxane inhibits water adsorption and promotes organic adsorption and thus provides a new strategy for preparing water-resistant catalysts for flue gas purification.
Collapse
Affiliation(s)
- Yingjian Chen
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, China; Tianjin Key Laboratory of Clean Energy and Pollution Control, Hebei University of Technology, Tianjin, China
| | - Kening Yao
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, China; Tianjin Key Laboratory of Clean Energy and Pollution Control, Hebei University of Technology, Tianjin, China
| | - Xiao Zhang
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, China; Tianjin Key Laboratory of Clean Energy and Pollution Control, Hebei University of Technology, Tianjin, China.
| | - Boxiong Shen
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, China; Tianjin Key Laboratory of Clean Energy and Pollution Control, Hebei University of Technology, Tianjin, China.
| | - Richard Lee Smith
- Graduate School of Environmental Studies, Tohoku University, Aramaki Aza Aoba 6-6-11, Aoba, Sendai 980-8579, Japan
| | - Haixin Guo
- Graduate School of Environmental Studies, Tohoku University, Aramaki Aza Aoba 6-6-11, Aoba, Sendai 980-8579, Japan
| |
Collapse
|
4
|
Wang Y, Wang Y, Kong Z, Kang Y, Zhan L. Manganese oxide nanorod catalysts for low-temperature selective catalytic reduction of NO with NH 3. RSC Adv 2022; 12:17182-17189. [PMID: 35755592 PMCID: PMC9180140 DOI: 10.1039/d1ra06758c] [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: 09/08/2021] [Accepted: 03/31/2022] [Indexed: 12/04/2022] Open
Abstract
MnOx nanorod catalysts were successfully synthesized by two different preparation methods using porous SiO2 nanorods as the template and investigated for the low-temperature selective catalytic reduction (SCR) of NO with NH3. The catalysts were characterized by scanning electron microscopy, transmission electron microscopy, nitrogen adsorption, X-ray diffraction, X-ray photoelectron spectroscopy, and NH3 temperature-programmed desorption. The results show that the obtained MnOx-P nanorod catalyst prepared by redox precipitation method exhibits higher NO removal activity than that prepared by the solvent evaporation method in the low temperature range of 100–180 °C, where about 98% NO conversion is achieved over MnOx(0.36)-P nanorods. The reason is mainly attributed to MnOx(0.36)-P nanorods possessing unique flower-like morphology and mesoporous structures with high pore volume, which facilitates the exposure of more active sites of MnOx and the adsorption of reactant gas molecules. Furthermore, there is a lower crystallinity of MnOx, higher percentage of Mn4+ species and a large amount of strong acid sites on the surface. These factors contribute to the excellent low-temperature SCR activity of MnOx(0.36)-P nanorods. Compared with MnOx(0.36)-E nanorods, MnOx(0.36)-P nanorods possess unique flower-like morphology and mesoporous structures with high pore volume, contributing to the excellent low-temperature SCR activity of MnOx(0.36)-P nanorods.![]()
Collapse
Affiliation(s)
- Yifan Wang
- State Key Laboratory of Chemical Engineering, Key Laboratory for Specially Functional Polymers and Related Technology of Ministry of Education, Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology Shanghai 200237 China +86 21 64252914 +86 21 64252924
| | - Yanli Wang
- State Key Laboratory of Chemical Engineering, Key Laboratory for Specially Functional Polymers and Related Technology of Ministry of Education, Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology Shanghai 200237 China +86 21 64252914 +86 21 64252924
| | - Zhenkai Kong
- State Key Laboratory of Chemical Engineering, Key Laboratory for Specially Functional Polymers and Related Technology of Ministry of Education, Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology Shanghai 200237 China +86 21 64252914 +86 21 64252924
| | - Ying Kang
- State Key Laboratory of Chemical Engineering, Key Laboratory for Specially Functional Polymers and Related Technology of Ministry of Education, Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology Shanghai 200237 China +86 21 64252914 +86 21 64252924
| | - Liang Zhan
- State Key Laboratory of Chemical Engineering, Key Laboratory for Specially Functional Polymers and Related Technology of Ministry of Education, Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology Shanghai 200237 China +86 21 64252914 +86 21 64252924
| |
Collapse
|
5
|
Ternary Nanohybrid of Ni3S2/CoMoS4/MnO2 on Nickel Foam for Aqueous and Solid-State High-Performance Supercapacitors. NANOMATERIALS 2022; 12:nano12111945. [PMID: 35683798 PMCID: PMC9182481 DOI: 10.3390/nano12111945] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/21/2022] [Accepted: 05/26/2022] [Indexed: 02/01/2023]
Abstract
To overcome the issues related to supercapacitor (SC) electrodes, such as high cost, low specific capacitance (Cs), low energy density (ED), requirements for expensive binder, etc., binderless electrodes are highly desirable. Here, a new ternary nanohybrid is presented as a binder-free SC electrode based on Ni3S2, CoMoS4, and MnO2. A facile two-step hydrothermal route, followed by a short thermal annealing process, is developed to grow amorphous polyhedral structured CoMoS4 and further wrap MnO2 nanowires on Ni foam. This rationally designed binder-free electrode exhibited the highest Cs of 2021 F g−1 (specific capacity of 883.8 C g−1 or 245.5 mAh g−1) at a current density of 1 A g−1 in 1 M KOH electrolyte with a highly porous surface morphology. This electrode material exhibited excellent cycling stability (90% capacitance retention after 4000 cycles) due to the synergistic contribution of individual components and advanced surface properties. Furthermore, an aqueous binder-free asymmetric SC based on this ternary composite exhibited an ED of 20.7 Wh kg−1, whereas a solid-state asymmetric SC achieved an ED of 13.8 Wh kg−1. This nanohybrid can be considered a promising binder-free electrode for both aqueous and solid-state asymmetric SCs with these remarkable electrochemical properties.
Collapse
|
6
|
Elgazzar E, Attala K, Abdel-Atty S, Abdel-Raoof AM. A screen printed methodology optimized by molecular dynamics simulation and Lean Six Sigma for the determination of xylometazoline in the presence of benzalkonium chloride in nasal drops. Talanta 2022; 242:123321. [PMID: 35183980 DOI: 10.1016/j.talanta.2022.123321] [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: 07/06/2021] [Revised: 12/06/2021] [Accepted: 02/13/2022] [Indexed: 11/30/2022]
Abstract
A new chemically disposable screen-printed modified electrode with yttrium doped manganese oxide (Mn2O3/Y2O3) nanocomposite at screen printed electrode was mainly constructed to quantify xylometazoline hydrochloride (XMZ). The crystallographic parameters were estimated from the XRD spectrum, suggesting that Mn2O3 of cubic phase with average grain size ∼ 77 nm. The SEM images revealed that Y3+ dopants had improved the surface topology. The findings indicate that morphological features play a vital role in improving the electronic properties of the fabricated electrode. Augmentation of Six Sigma (SS) with molecular dynamics simulation (MD) as a theoretical study was widely adopted to improve the current process as a quality management methodology by measuring the process capability to determine if the process meets the desired specification limits. Process capability is determined through measuring the variability in the process output and comparing these variations with the desired specifications. Also, it assures a robust method specification at a high level of targeted performance and statistical confidence. A greenness assessment procedure utilizing the eco-scale algorism was conducted to prove the greenness of the proposed methodology. Additionally, the proposed sensor presented a high sensitivity over the concentration range (1x10-6-1x10-2 mol L-1) of a detection limit 3.93 × 10-7 mol L-1 with the Nernstian cationic slope of 58.18 ± 0.76 mV decade-1 at 25 ± 1 °C.
Collapse
Affiliation(s)
- Elsayed Elgazzar
- Department of Physics, Faculty of Science, Suez Canal University, Ismailia, Egypt
| | - Khaled Attala
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Egyptian Russian University, Cairo, Egypt
| | - Shimaa Abdel-Atty
- Pharmaceutical Chemistry Department, National Organization for Drug Control and Research (NODCAR), Giza, Egypt
| | - Ahmed M Abdel-Raoof
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy (Boys), Al-Azhar University, 11751, Nasr City, Cairo, Egypt.
| |
Collapse
|
7
|
Drdova S, Zhao S, Giannakou M, Sivaraman D, Guerrero‐Alburquerque N, Bonnin A, Pauer R, Pan Z, Billeter E, Siqueira G, Zeng Z, Koebel MM, Malfait WJ, Wang J. Biomimetic Light-Driven Aerogel Passive Pump for Volatile Organic Pollutant Removal. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2105819. [PMID: 35195354 PMCID: PMC9008417 DOI: 10.1002/advs.202105819] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Indexed: 06/14/2023]
Abstract
Inspired by the solar-light-driven oxygen transportation in aquatic plants, a biomimetic sustainable light-driven aerogel pump with a surface layer containing black manganese oxide (MnO2 ) as an optical absorber is developed. The flow intensity of the pumped air is controlled by the pore structure of nanofilbrillated cellulose, urea-modified chitosan, or polymethylsilsesquioxane (PMSQ) aerogels. The MnO2 -induced photothermal conversion drives both the passive gas flow and the catalytic degradation of volatile organic pollutants. All investigated aerogels demonstrate superior pumping compared to benchmarked Knudsen pump systems, but the inorganic PMSQ aerogels provide the highest flexibility in terms of the input power and photothermal degradation activity. Aerogel light-driven multifunctional gas pumps offer a broad future application potential for gas-sensing devices, air-quality mapping, and air quality control systems.
Collapse
Affiliation(s)
- Sarka Drdova
- Institute of Environmental EngineeringETH ZurichStefano‐Franscini‐Platz 3Zürich8093Switzerland
- Laboratory for Advanced Analytical TechnologiesSwiss Federal Laboratories for Materials Science and TechnologyEmpa, Überlandstrasse 129Dübendorf8600Switzerland
| | - Shanyu Zhao
- Laboratory for Building Energy Materials and ComponentsSwiss Federal Laboratories for Materials Science and TechnologyEmpa, Überlandstrasse 129Dübendorf8600Switzerland
| | - Marianna Giannakou
- Institute of Environmental EngineeringETH ZurichStefano‐Franscini‐Platz 3Zürich8093Switzerland
- Laboratory for Advanced Analytical TechnologiesSwiss Federal Laboratories for Materials Science and TechnologyEmpa, Überlandstrasse 129Dübendorf8600Switzerland
| | - Deeptanshu Sivaraman
- Laboratory for Building Energy Materials and ComponentsSwiss Federal Laboratories for Materials Science and TechnologyEmpa, Überlandstrasse 129Dübendorf8600Switzerland
- Department of ChemistryUniversity of FribourgChemin du Musée 9FribourgCH‐1700Switzerland
| | - Natalia Guerrero‐Alburquerque
- Laboratory for Building Energy Materials and ComponentsSwiss Federal Laboratories for Materials Science and TechnologyEmpa, Überlandstrasse 129Dübendorf8600Switzerland
- Department of ChemistryUniversity of FribourgChemin du Musée 9FribourgCH‐1700Switzerland
| | - Anne Bonnin
- Swiss Light SourcePaul Scherrer InstituteVilligenCH‐5232Switzerland
| | - Robin Pauer
- Electron Microscopy CenterSwiss Federal Laboratories for Materials Science and TechnologyEmpa; Überlandstrasse 129DübendorfCH‐8600Switzerland
| | - Zhengyuan Pan
- State Key Laboratory of Pulp and Paper EngineeringSouth China University of TechnologyGuangzhou510640China
| | - Emanuel Billeter
- Laboratory for Advanced Analytical TechnologiesSwiss Federal Laboratories for Materials Science and TechnologyEmpa, Überlandstrasse 129Dübendorf8600Switzerland
- Department of ChemistryUniversity of ZurichWinterthurerstrasse 190ZürichCH‐8057Switzerland
| | - Gilberto Siqueira
- Cellulose and Wood Materials LaboratorySwiss Federal Laboratories for Materials Science and TechnologyEmpa, Überlandstrasse 129Dübendorf8600Switzerland
| | - Zhihui Zeng
- School of Materials Science and EngineeringShandong UniversityJinan250061China
| | - Matthias M. Koebel
- Laboratory for Building Energy Materials and ComponentsSwiss Federal Laboratories for Materials Science and TechnologyEmpa, Überlandstrasse 129Dübendorf8600Switzerland
| | - Wim J. Malfait
- Laboratory for Building Energy Materials and ComponentsSwiss Federal Laboratories for Materials Science and TechnologyEmpa, Überlandstrasse 129Dübendorf8600Switzerland
| | - Jing Wang
- Institute of Environmental EngineeringETH ZurichStefano‐Franscini‐Platz 3Zürich8093Switzerland
- Laboratory for Advanced Analytical TechnologiesSwiss Federal Laboratories for Materials Science and TechnologyEmpa, Überlandstrasse 129Dübendorf8600Switzerland
| |
Collapse
|
8
|
Mukri BD. A Noble-Metal-Free Ce0.90Co0.10O2 – δ Catalyst with Enhanced Three-Way Catalytic Performance. KINETICS AND CATALYSIS 2022. [DOI: 10.1134/s0023158421060136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
9
|
Bonelli B, Tammaro O, Martinovic F, Nasi R, Dell’Agli G, Rivolo P, Giorgis F, Ditaranto N, Deorsola FA, Esposito S. Reverse Micelle Strategy for the Synthesis of MnO x -TiO 2 Active Catalysts for NH 3-Selective Catalytic Reduction of NO x at Both Low Temperature and Low Mn Content. ACS OMEGA 2021; 6:24562-24574. [PMID: 34604638 PMCID: PMC8482467 DOI: 10.1021/acsomega.1c03153] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 08/06/2021] [Indexed: 06/02/2023]
Abstract
MnO x -TiO2 catalysts (0, 1, 5, and 10 wt % Mn nominal content) for NH3-SCR (selective catalytic reduction) of NO x have been synthesized by the reverse micelle-assisted sol-gel procedure, with the aim of improving the dispersion of the active phase, usually poor when obtained by other synthesis methods (e.g., impregnation) and thereby lowering its amount. For comparison, a sample at nominal 10 wt % Mn was obtained by impregnation of the (undoped) TiO2 sample. The catalysts were characterized by using an integrated multitechnique approach, encompassing X-ray diffraction followed by Rietveld refinement, micro-Raman spectroscopy, N2 isotherm measurement at -196 °C, energy-dispersive X-ray analysis, diffuse reflectance UV-vis spectroscopy, temperature-programmed reduction technique, and X-ray photoelectron spectroscopy. The obtained results prove that the reverse micelle sol-gel approach allowed for enhancing the catalytic activity, in that the catalysts were active in a broad temperature range at a substantially low Mn loading, as compared to the impregnated catalyst. Particularly, the 5 wt % Mn catalyst showed the best NH3-SCR activity in terms of both NO x conversion (ca. 90%) and the amount of produced N2O (ca. 50 ppm) in the 200-250 °C temperature range.
Collapse
Affiliation(s)
- Barbara Bonelli
- Dipartimento di
Scienza Applicata e Tecnologia (DISAT) and INSTM Unit of Torino-Politecnico, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy
| | - Olimpia Tammaro
- Dipartimento di
Scienza Applicata e Tecnologia (DISAT) and INSTM Unit of Torino-Politecnico, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy
| | - Ferenc Martinovic
- Dipartimento di
Scienza Applicata e Tecnologia (DISAT) and INSTM Unit of Torino-Politecnico, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy
| | - Roberto Nasi
- Dipartimento di
Scienza Applicata e Tecnologia (DISAT) and INSTM Unit of Torino-Politecnico, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy
| | - Gianfranco Dell’Agli
- Dipartimento di Ingegneria Civile e Meccanica, Università degli Studi di Cassino e del Lazio Meridionale, Via G. Di Biasio 43, 03043 Cassino, Frosinone, Italy
| | - Paola Rivolo
- Dipartimento di
Scienza Applicata e Tecnologia (DISAT) and INSTM Unit of Torino-Politecnico, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy
| | - Fabrizio Giorgis
- Dipartimento di
Scienza Applicata e Tecnologia (DISAT) and INSTM Unit of Torino-Politecnico, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy
| | - Nicoletta Ditaranto
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy
| | - Fabio Alessandro Deorsola
- Dipartimento di
Scienza Applicata e Tecnologia (DISAT) and INSTM Unit of Torino-Politecnico, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy
| | - Serena Esposito
- Dipartimento di
Scienza Applicata e Tecnologia (DISAT) and INSTM Unit of Torino-Politecnico, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy
| |
Collapse
|
10
|
Thaheem I, Joh DW, Noh T, Im HN, Lee KT. Physico-electrochemical properties and long-term stability of Mn1.45-0.5xCo1.45-0.5xCuxY0.1O4 spinel protective coatings on commercial metallic interconnects for solid oxide fuel cells. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.01.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
11
|
Li M, Guo Y, Yang J. Spatially Nanoconfined Architectures: A Promising Design for Selective Catalytic Reduction of NO
x. ChemCatChem 2020. [DOI: 10.1002/cctc.202001024] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Minhan Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 P. R. China
| | - Yangyang Guo
- Beijing Engineering Research Centre of Process Pollution Control National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Jianping Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 P. R. China
| |
Collapse
|
12
|
Wang Y, Zhang L, Zhang C, Xu X, Xie Y, Chen W, Wang J, Zhang R. Promoting the Generation of Active Oxygen over Ag-Modified Nanoflower-like α-MnO2 for Soot Oxidation: Experimental and DFT Studies. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01308] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuhang Wang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Longzhu Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Changsen Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Xingmin Xu
- School of Forensic Medicine, Henan University of Technology, Luoyang 471000, Henan, China
| | - Yunyun Xie
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Wenjun Chen
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Jie Wang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Ruiqin Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
| |
Collapse
|
13
|
Graphitic Carbon Nitride Doped Copper-Manganese Alloy as High-Performance Electrode Material in Supercapacitor for Energy Storage. NANOMATERIALS 2019; 10:nano10010002. [PMID: 31861281 PMCID: PMC7023178 DOI: 10.3390/nano10010002] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 12/14/2019] [Accepted: 12/16/2019] [Indexed: 11/17/2022]
Abstract
Here, we report the synthesis of copper-manganese alloy (CuMnO2) using graphitic carbon nitride (gCN) as a novel support material. The successful formation of CuMnO2-gCN was confirmed through spectroscopic, optical, and other characterization techniques. We have applied this catalyst as the energy storage material in the alkaline media and it has shown good catalytic behavior in supercapacitor applications. The CuMnO2-gCN demonstrates outstanding electrocapacitive performance, having high capacitance (817.85 A·g-1) and well-cycling stability (1000 cycles) when used as a working electrode material for supercapacitor applications. For comparison, we have also used the gCN and Cu2O-gCN for supercapacitor applications. This study proposes a simple path for the extensive construction of self-attaining double metal alloy with control size and uniformity in high-performance energy-storing materials.
Collapse
|
14
|
Begum H, Ahmed MS, Lee DW, Kim YB. Carbon nanotubes-based PdM bimetallic catalysts through N 4-system for efficient ethanol oxidation and hydrogen evolution reaction. Sci Rep 2019; 9:11051. [PMID: 31363157 PMCID: PMC6667450 DOI: 10.1038/s41598-019-47575-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 07/12/2019] [Indexed: 11/27/2022] Open
Abstract
Transitional metal-nitrogen-carbon system is a promising candidate to replace the Pt-based electrocatalyst due to its superior activity, durability and cost effectiveness. In this study, we have designed a simple strategy to fabricate carbon nanotubes-supported binary-nitrogen-carbon catalyst via wet-chemical method. Palladium and transitional metals (M, i.e. manganese cobalt and copper) nanoparticles are anchored through four-nitrogen system onto carbon nanotubes (denoted as PdM-N4/CNTs). This material has been used as bifunctional electrocatalyst for electrochemical ethanol oxidation reaction and hydrogen evolution reaction for the first time. The N4-linked nanoparticles onto carbon nanotubes plays a crucial role in intrinsic catalytic activity for both reactions in 1 M KOH electrolyte. Among three PdM-N4/CNTs catalysts, the PdMn-N4/CNTs catalyst exhibits higher catalytic activity in terms of current density, mass activity and stability compared to the benchmark Pt/C. The robust electrocatalysis are inherited from the better attachment of PdMn through N4-system onto carbon nanotubes, comparatively smaller particles formation with better dispersion and higher electrical conductivity.
Collapse
Affiliation(s)
- Halima Begum
- Department of Mechanical Engineering, Chonnam National University, Gwangju, Republic of Korea
| | | | - Dong-Weon Lee
- Department of Mechanical Engineering, Chonnam National University, Gwangju, Republic of Korea
| | - Young-Bae Kim
- Department of Mechanical Engineering, Chonnam National University, Gwangju, Republic of Korea.
| |
Collapse
|
15
|
Jiang L, Zhang G, Li D, Liu C, Xing S. One-pot achievement of MnO2/Fe2O3 nanocomposites for the oxygen reduction reaction with enhanced catalytic activity. NEW J CHEM 2019. [DOI: 10.1039/c9nj04317a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
MnO2/Fe2O3 nanocomposites were achieved in one-pot followed by high-temperature treatment, which presented excellent electrocatalytic activity for the oxygen reduction reaction.
Collapse
Affiliation(s)
- Lingling Jiang
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Guodong Zhang
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Dehua Li
- Engineering Research Center of Forensic Sciences
- Department of Forensic Sciences
- Jilin Police College
- Changchun
- P. R. China
| | - Chengzhan Liu
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Shuangxi Xing
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| |
Collapse
|
16
|
Lian Z, Shan W, Zhang Y, Wang M, He H. Morphology-Dependent Catalytic Performance of NbOx/CeO2 Catalysts for Selective Catalytic Reduction of NOx with NH3. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02553] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Zhihua Lian
- Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Wenpo Shan
- Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Yan Zhang
- Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Meng Wang
- Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Hong He
- Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
17
|
2D, 3D mesostructured silicas templated mesoporous manganese dioxide for selective catalytic reduction of NOx with NH3. J Colloid Interface Sci 2018; 516:254-262. [DOI: 10.1016/j.jcis.2018.01.048] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 01/08/2018] [Accepted: 01/12/2018] [Indexed: 11/24/2022]
|
18
|
Liu J, Wei Y, Li PZ, Zhang P, Su W, Sun Y, Zou R, Zhao Y. Experimental and Theoretical Investigation of Mesoporous MnO2 Nanosheets with Oxygen Vacancies for High-Efficiency Catalytic DeNOx. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00267] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jia Liu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Yajuan Wei
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
- High Pressure Adsorption Laboratory, Department of Chemistry, School of Science, Tianjin University, Tianjin 300350, People’s Republic of China
| | - Pei-Zhou Li
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Peipei Zhang
- High Pressure Adsorption Laboratory, Department of Chemistry, School of Science, Tianjin University, Tianjin 300350, People’s Republic of China
| | - Wei Su
- School of Chemical Engineering and Technology, Tianjin Key Laboratory of Membrane and Desalination Technology, Tianjin University, Tianjin 300350, People’s Republic of China
| | - Yan Sun
- High Pressure Adsorption Laboratory, Department of Chemistry, School of Science, Tianjin University, Tianjin 300350, People’s Republic of China
| | - Ruqiang Zou
- Beijing Key Lab of Theory and Technology for Advanced Battery Materials, Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Yanli Zhao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| |
Collapse
|
19
|
Study of Fe-doped V2O5/TiO2 catalyst for an enhanced NH3-SCR in diesel exhaust aftertreatment. CHEMICAL PAPERS 2018. [DOI: 10.1007/s11696-018-0437-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
20
|
Effect of proton irradiation on the structural and electrochemical properties of MnO2 nanosheets. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.01.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
21
|
Zhang P, Pan WG, Guo RT, Liu SM, Li MY, Qin L, Pan XQ, Ye XF. A study on simultaneous catalytic ozonation of Hg0 and NO using Mn–TiO2 catalyst at low flue gas temperatures. CHEMICAL PAPERS 2018. [DOI: 10.1007/s11696-018-0388-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
22
|
Villa K, Parmar J, Vilela D, Sánchez S. Core–shell microspheres for the ultrafast degradation of estrogen hormone at neutral pH. RSC Adv 2018; 8:5840-5847. [PMID: 35539604 PMCID: PMC9078169 DOI: 10.1039/c7ra11705a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 01/28/2018] [Indexed: 01/08/2023] Open
Abstract
In the past few years there has been growing concern about human exposure to endocrine disrupting chemicals. This kind of pollutants can bioaccumulate in aquatic organisms and lead to serious health problems, especially affecting child development. Many efforts have been devoted to achieving the efficient removal of such refractory organics. In this regard, a novel catalyst based on the combination of α-FeOOH and MnO2@MnCO3 catalysts has been developed by up-scalable techniques from cheap precursors and tested in the photo-Fenton-like degradation of an endocrine disruptor. Almost total degradation of 17α-ethynylestradiol hormone was achieved after only 2 min of simulated solar irradiation at neutral pH. The outstanding performance of FeOOH@MnO2@MnCO3 microspheres was mainly attributed to a larger generation of hydroxyl radicals, which are the primary mediators of the total oxidation for this hormone. This work contributes to the development of more cost-effective systems for the rapid and efficient removal of persistent organic pollutants present in sewage plant effluents under direct solar light. Ultrafast photo-Fenton degradation of 17α-ethynylestradiol under simulated solar irradiation.![]()
Collapse
Affiliation(s)
- Katherine Villa
- Institute for Bioengineering of Catalonia (IBEC)
- The Barcelona Institute of Science and Technology
- 08028 Barcelona
- Spain
| | - Jemish Parmar
- Institute for Bioengineering of Catalonia (IBEC)
- The Barcelona Institute of Science and Technology
- 08028 Barcelona
- Spain
- Max Planck Institute for Intelligent Systems Institution
| | - Diana Vilela
- Institute for Bioengineering of Catalonia (IBEC)
- The Barcelona Institute of Science and Technology
- 08028 Barcelona
- Spain
- Max Planck Institute for Intelligent Systems Institution
| | - Samuel Sánchez
- Institute for Bioengineering of Catalonia (IBEC)
- The Barcelona Institute of Science and Technology
- 08028 Barcelona
- Spain
- Max Planck Institute for Intelligent Systems Institution
| |
Collapse
|
23
|
Synthesis and bio-physical characterization of Silver nanoparticle and Ag-mesoporous MnO2 nanocomposite for anti-microbial and anti-cancer activity. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.08.037] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
24
|
Jampaiah D, Velisoju VK, Venkataswamy P, Coyle VE, Nafady A, Reddy BM, Bhargava SK. Nanowire Morphology of Mono- and Bidoped α-MnO 2 Catalysts for Remarkable Enhancement in Soot Oxidation. ACS APPLIED MATERIALS & INTERFACES 2017; 9:32652-32666. [PMID: 28862428 DOI: 10.1021/acsami.7b07656] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In the present work, nanowire morphologies of α-MnO2, cobalt monodoped α-MnO2, Cu and Co bidoped α-MnO2, and Ni and Co bidoped α-MnO2 samples were prepared by a facile hydrothermal synthesis. The structural, morphological, surface, and redox properties of all the as-prepared samples were investigated by various characterization techniques, namely, scanning electron microscopy (SEM), transmission and high resolution electron microscopy (TEM and HR-TEM), powder X-ray diffraction (XRD), N2 sorption surface area measurements, X-ray photoelectron spectroscopy (XPS), hydrogen-temperature-programmed reduction (H2-TPR), and oxygen-temperature-programmed desorption (O2-TPD). The soot oxidation performance was found to be significantly improved via metal mono- and bidoping. In particular, Cu and Co bidoped α-MnO2 nanowires showed a remarkable improvement in soot oxidation performance, with its T50 (50% soot conversion) values of 279 and 431 °C under tight and loose contact conditions, respectively. The soot combustion activation energy for the Cu and Co bidoped MnO2 nanowires is 121 kJ/mol. The increased oxygen vacancies, greater number of active sites, facile redox behavior, and strong synergistic interaction were the key factors for the excellent catalytic activity. The longevity of Cu and Co bidoped α-MnO2 nanowires was analyzed, and it was found that the Cu/Co bidoped α-MnO2 nanowires were highly stable after five successive cycles and showed an insignificant decrease in soot oxidation activity. Furthermore, the HR-TEM analysis of a spent catalyst after five cycles indicated that the (310) crystal plane of α-MnO2 interacts with the soot particles; therefore, we can assume that more-reactive exposed surfaces positively affect the reaction of soot oxidation. Thus, the Cu and Co bidoped α-MnO2 nanowires provide promise as a highly effective alternative to precious metal based automotive catalysts.
Collapse
Affiliation(s)
- Deshetti Jampaiah
- Centre for Advanced Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University , GPO BOX 2476, Melbourne, Victoria 3001, Australia
| | - Vijay Kumar Velisoju
- Centre for Advanced Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University , GPO BOX 2476, Melbourne, Victoria 3001, Australia
- Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology , Uppal Road, Hyderabad 500 007, India
| | | | - Victoria E Coyle
- Centre for Advanced Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University , GPO BOX 2476, Melbourne, Victoria 3001, Australia
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University , Riyadh 11451, Saudi Arabia
| | - Benjaram M Reddy
- Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology , Uppal Road, Hyderabad 500 007, India
| | - Suresh K Bhargava
- Centre for Advanced Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University , GPO BOX 2476, Melbourne, Victoria 3001, Australia
| |
Collapse
|
25
|
Soot Oxidation Activity of Redox and Non-Redox Metal Oxides Synthesised by EDTA–Citrate Method. Catal Letters 2017. [DOI: 10.1007/s10562-017-2181-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
26
|
The CeOX and MnOX Nanocrystals Supported on TiO2–Graphene Oxide Catalysts and Their Selective Catalytic Reduction Properties at Low Temperature. CRYSTALS 2017. [DOI: 10.3390/cryst7060159] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
27
|
Zong L, Dong F, Zhang G, Han W, Tang Z, Zhang J. Highly Efficient Mesoporous V2O5/WO3–TiO2 Catalyst for Selective Catalytic Reduction of NOx: Effect of the Valence of V on the Catalytic Performance. CATALYSIS SURVEYS FROM ASIA 2017. [DOI: 10.1007/s10563-017-9229-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
28
|
Novel nanoporous MnOx (x=∼1.75) sorbent for the removal of SO2 and NH3 made from MnC2O4·2H2O. J Colloid Interface Sci 2016; 465:323-32. [PMID: 26692496 DOI: 10.1016/j.jcis.2015.11.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 11/19/2015] [Accepted: 11/20/2015] [Indexed: 11/21/2022]
Abstract
In this work, nanoporous manganese oxides (MnOx) were prepared by thermal decomposition of MnC2O4·2H2O at 225°C for 6h in air. The manganese oxalate dihydrate precipitate was made from manganese sulfate and ammonium oxalate during ultrasonication and stirring. The physical properties of the oxalate precursors and the resulting MnOx samples were characterized with SEM, TGA-DSC, FTIR and powder XRD. The specific surface areas and porosity of MnOx were studied by single-point BET and multi-point N2 adsorption-desorption measurements. The amorphous MnOx from oxalate prepared by sonication showed a specific surface area as large as 499.7m(2)/g. Dynamic SO2 and NH3 flow tests indicated that the adsorption capacity of MnOx, especially for SO2, can be increased by increased surface area. Compared to the best Mn3O4-impregnated activated carbon adsorbent, nanoporous MnOx could remove approximately three times as much SO2 and a comparable amount of NH3 per gram of adsorbent. This could lead to respirators of lower weight and smaller size which will be attractive to users.
Collapse
|
29
|
Guo Z, Liang QH, Yang Z, Liu S, Huang ZH, Kang F. Modifying porous carbon nanofibers with MnOx–CeO2–Al2O3 mixed oxides for NO catalytic oxidation at room temperature. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01617g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
MnOx–CeO2–Al2O3 mixed oxides dispersed in CNFs to form a composite which displays remarkable activity for NO oxidation at room temperature.
Collapse
Affiliation(s)
- Zeyu Guo
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Qing-Hua Liang
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Zhiyu Yang
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Shuang Liu
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Zheng-Hong Huang
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Feiyu Kang
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
| |
Collapse
|
30
|
Chen Q, Qian M, Jia C, Lin J, Jiang G, Guan B. Formation of mesoporous calcium sulfate microspheres through phase conversion in controlled calcination. RSC Adv 2016. [DOI: 10.1039/c6ra17425f] [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] Open
Abstract
Mesoporous calcium sulfate microspheres with uniform size distribution and suitable loading capacity were prepared by controlled phase conversion for drug loading.
Collapse
Affiliation(s)
- Qiaoshan Chen
- Department of Environmental Engineering
- Zhejiang University
- Hangzhou 310058
- China
| | - Mengqian Qian
- Department of Environmental Engineering
- Zhejiang University
- Hangzhou 310058
- China
| | - Caiyun Jia
- Department of Environmental Engineering
- Zhejiang University
- Hangzhou 310058
- China
| | - Junming Lin
- Department of Environmental Engineering
- Zhejiang University
- Hangzhou 310058
- China
| | - Guangming Jiang
- Engineering Research Center for Waste Oil Recovery Technology and Equipment
- Chongqing Technology and Business University
- Chongqing 400067
- China
| | - Baohong Guan
- Department of Environmental Engineering
- Zhejiang University
- Hangzhou 310058
- China
| |
Collapse
|