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Zhang WP, Li JR, Li YY, Zhao J, Wu K, Xiao H, He C. Acetone Efficient Degradation under Simulated Humid Conditions by Mn-O-Pt Interaction Taming-Triggered Water Dissociation Intensification. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:20962-20973. [PMID: 38008907 DOI: 10.1021/acs.est.3c07194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2023]
Abstract
As a generally existing component in industrial streams, H2O usually inhibits the catalytic degradation efficiency of volatile organic compounds (VOCs) greatly. Here, we propose a novel strategy that accelerates the H2O dissociation and facilitates positive feedbacks during VOC oxidation by fabricating citric acid (CA)-assisted Pt(K)-Mn2O3/SiO2 (Pt-Mn/KS-xCA). Results reveal that the complexation of carboxyl groups of citric acid with Mn cations leads to the formation of small Mn2O3 (4.1 ± 0.2 nm) and further enhances the Mn-O-Pt interaction (strengthened by the Si-O-Mn interaction), which can transfer more electrons from Pt-Mn/KS-6CA to H2O, thus facilitating its breaking of covalent bonds. It subsequently produces abundant surface hydroxyl groups, improving the adsorption and activation abilities of acetone reactant and ethanol intermediate. Attributing to these, the acetone turnover frequency value of Pt-Mn/KS-6CA is 1.8 times higher than that of Pt-Mn/KS at 160 °C, and this multiple changes to 6.3 times in the presence of H2O. Remarkably, acetone conversion over Pt-Mn/KS-6CA increases by up to 14% in the presence of H2O; but it decreases by up to 26% for Pt-Mn/KS due to its weak dissociation ability and high adsorption capacity toward H2O. This work sheds new insights into the design of highly efficient catalytic materials for VOC degradation under humid conditions.
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Affiliation(s)
- Wan-Peng Zhang
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China
- Ningbo (Beilun) Zhongke Haixi Industrial Technology Innovation Center, Ningbo 315021, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jian-Rong Li
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China
- Ningbo (Beilun) Zhongke Haixi Industrial Technology Innovation Center, Ningbo 315021, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Ying-Ying Li
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China
- Ningbo (Beilun) Zhongke Haixi Industrial Technology Innovation Center, Ningbo 315021, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Junyi Zhao
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China
- Ningbo (Beilun) Zhongke Haixi Industrial Technology Innovation Center, Ningbo 315021, P. R. China
| | - Kun Wu
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China
- Ningbo (Beilun) Zhongke Haixi Industrial Technology Innovation Center, Ningbo 315021, P. R. China
| | - Hang Xiao
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China
- Ningbo (Beilun) Zhongke Haixi Industrial Technology Innovation Center, Ningbo 315021, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Chi He
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, P. R. China
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Mares-Briones F, Higareda A, Lopez-Miranda JL, Mendoza-Cruz R, Esparza R. Bimetallic AgPt Nanoalloys as an Electrocatalyst for Ethanol Oxidation Reaction: Synthesis, Structural Analysis, and Electro-Catalytic Activity. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1396. [PMID: 37110981 PMCID: PMC10145194 DOI: 10.3390/nano13081396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 06/19/2023]
Abstract
In the present work, the chemical synthesis of AgPt nanoalloys is reported by the polyol method using polyvinylpyrrolidone (PVP) as a surfactant and a heterogeneous nucleation approach. Nanoparticles with different atomic compositions of the Ag and Pt elements (1:1 and 1:3) were synthesized by adjusting the molar ratios of the precursors. The physicochemical and microstructural characterization was initially performed using the UV-Vis technique to determine the presence of nanoparticles in suspension. Then, the morphology, size, and atomic structure were determined using XRD, SEM, and HAADF-STEM techniques, confirming the formation of a well-defined crystalline structure and homogeneous nanoalloy with an average particle size of less than 10 nm. Finally, the cyclic voltammetry technique evaluated the electrochemical activity of bimetallic AgPt nanoparticles supported on Vulcan XC-72 carbon for the ethanol oxidation reaction in an alkaline medium. Chronoamperometry and accelerated electrochemical degradation tests were performed to determine their stability and long-term durability. The synthesized AgPt (1:3)/C electrocatalyst presented significative catalytic activity and superior durability due to the introduction of Ag that weakens the chemisorption of the carbonaceous species. Thus, it could be an attractive candidate for cost-effective ethanol oxidation compared to commercial Pt/C.
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Affiliation(s)
- Fabian Mares-Briones
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Santiago de Querétaro 76230, Qro., Mexico; (F.M.-B.); (J.L.L.-M.)
| | - América Higareda
- Unidad de Energía Renovable, Centro de Investigación Científica de Yucatán A.C., Carretera Sierra Papacal-Chuburná Puerto, Km 5, Sierra Papacal, Mérida 97302, Yuc., Mexico;
| | - Jose Luis Lopez-Miranda
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Santiago de Querétaro 76230, Qro., Mexico; (F.M.-B.); (J.L.L.-M.)
| | - Rubén Mendoza-Cruz
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Circuito de la Investigación Científica, C.U., Ciudad de México 04510, CDMX, Mexico;
| | - Rodrigo Esparza
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Santiago de Querétaro 76230, Qro., Mexico; (F.M.-B.); (J.L.L.-M.)
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Filatov E, Smirnov P, Potemkin D, Pishchur D, Kryuchkova N, Plyusnin P, Korenev S. Formation of Catalytically Active Nanoparticles under Thermolysis of Silver Chloroplatinate(II) and Chloroplatinate(IV). Molecules 2022; 27:molecules27041173. [PMID: 35208959 PMCID: PMC8875358 DOI: 10.3390/molecules27041173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/29/2022] [Accepted: 02/08/2022] [Indexed: 12/10/2022] Open
Abstract
The thermal behaviour of Ag2[PtCl4] and Ag2[PtCl6] complex salts in inert and reducing atmospheres has been studied. The thermolysis of compounds in a helium atmosphere is shown to occur in two stages. At the first stage, the complexes decompose in the temperature range of 350–500 °C with the formation of platinum and silver chloride and the release of chlorine gas. At the second stage, silver chloride is sublimated in the temperature range of 700–900 °C, while metallic platinum remains in the solid phase. In contrast to the thermolysis of Ag2[PtCl6], the thermal decomposition of Ag2[PtCl4] at 350 °C is accompanied by significant heat release, which is associated with disproportionation of the initial salt to Ag2[PtCl6], silver chloride, and platinum metal. It is confirmed by DSC measurements, DFT calculations of a suggested reaction, and XRD. The thermolysis of Ag2[PtCl4] and Ag2[PtCl6] compounds is shown to occur in a hydrogen atmosphere in two poorly separable steps. The compounds are decomposed within 170–350 °C, and silver and platinum are reduced to a metallic state, while a metastable single-phase solid solution of Ag0.67Pt0.33 is formed. The catalytic activity of the resulting nanoalloy Ag0.67Pt0.33 is studied in the reaction of CO total (TOX) and preferential (PROX) oxidation. Ag0.67Pt0.33 enhanced Pt nano-powder activity in CO TOX, but was not selective in CO PROX.
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Affiliation(s)
- Evgeny Filatov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (P.S.); (D.P.); (N.K.); (P.P.); (S.K.)
- Correspondence:
| | - Pavel Smirnov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (P.S.); (D.P.); (N.K.); (P.P.); (S.K.)
- Department of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russia;
| | - Dmitry Potemkin
- Department of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russia;
- Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Denis Pishchur
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (P.S.); (D.P.); (N.K.); (P.P.); (S.K.)
| | - Natalya Kryuchkova
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (P.S.); (D.P.); (N.K.); (P.P.); (S.K.)
| | - Pavel Plyusnin
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (P.S.); (D.P.); (N.K.); (P.P.); (S.K.)
| | - Sergey Korenev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (P.S.); (D.P.); (N.K.); (P.P.); (S.K.)
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Annas D, Lee HK, Hira SA, Park JC, Park KH. A new synthesis of highly active Rh–Co alloy nanoparticles supported on N-doped porous carbon for catalytic C–Se cross-coupling and p-nitrophenol hydrogenation reactions. NEW J CHEM 2021. [DOI: 10.1039/d1nj00586c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New Rh–Co/NPC synthesized through a one-pot thermal reduction synthesis has a high catalytic activity for organic chemistry reactions.
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Affiliation(s)
- Dicky Annas
- Department of Chemistry
- Pusan National University
- Busan
- South Korea
| | - Hack-Keun Lee
- Clean Fuel Laboratory
- Korea Institute of Energy Research
- 152 Gajeong-Ro
- Daejeon 34129
- Korea
| | | | - Ji Chan Park
- Clean Fuel Laboratory
- Korea Institute of Energy Research
- 152 Gajeong-Ro
- Daejeon 34129
- Korea
| | - Kang Hyun Park
- Department of Chemistry
- Pusan National University
- Busan
- South Korea
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Wisniewska J, Sobczak I, Ziolek M. The effect of the calcium dopant on the activity and selectivity of gold catalysts supported on SBA-15 and Nb-containing SBA-15 in methanol oxidation. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02135k] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gold catalysts based on SBA-15, NbSBA-15 (Nb introduced in one pot synthesis) and Nb2O5/SBA-15 (prepared by impregnation of SBA-15) were doped with calcium species introduced before Au loading and were tested in gas-phase methanol oxidation.
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Affiliation(s)
- Joanna Wisniewska
- Faculty of Chemistry
- Adam Mickiewicz University, Poznań
- 61-614 Poznań
- Poland
| | - Izabela Sobczak
- Faculty of Chemistry
- Adam Mickiewicz University, Poznań
- 61-614 Poznań
- Poland
| | - Maria Ziolek
- Faculty of Chemistry
- Adam Mickiewicz University, Poznań
- 61-614 Poznań
- Poland
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Wisniewska J, Grzelak K, Huang SP, Sobczak I, Yang CM, Ziolek M. The influence of Zr presence in short channel SBA-15 on state and activity of metallic modifiers (Ag, Au, Cu, Fe). Catal Today 2020. [DOI: 10.1016/j.cattod.2019.05.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kaskow I, Wojtaszek-Gurdak A, Sobczak I. Methanol oxidation on AuAg-Zn/MCM-36 – The effect of catalyst components and pretreatment. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.04.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wisniewska J, Dziedzic I, Ziolek M. A platinum promoted Ag/SBA-15 catalyst effective in selective oxidation of methanol - design and surface characterization. RSC Adv 2020; 10:14570-14580. [PMID: 35497122 PMCID: PMC9051898 DOI: 10.1039/d0ra01562h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 04/02/2020] [Indexed: 02/04/2023] Open
Abstract
The aim of this study was better understanding of surface properties of bimetallic (silver-platinum) catalysts and to verify if a very small addition of platinum (ca. 0.05 wt%) to silver (ca. 2.0 wt%) loaded on ordered mesoporous silica, SBA-15, would improve the catalytic properties of bimetallic Ag-Pt materials in selective oxidation of methanol to methyl formate. Ag-Pt catalysts were prepared by one-step and step-by-step procedures and the final Ag/Pt molar ratio in the respective samples was equal to 86 and 63. The catalysts were characterized after calcination and different activation treatments (in Ar and O2). X-ray diffraction, UV-vis and XP spectroscopy confirmed the lack of Ag-Pt alloy crystallites in the samples and also evidenced a higher resistance of silver oxide species to reduction upon activation in Ar flow in the presence of platinum promoter interacting with silver species. Methanol oxidation over the samples activated in Ar flow and in oxidizing flow (O2 + Ar) helped identify the role of each component in the bimetallic Ag-Pt catalyst in terms of activity and selectivity in the oxidation of methanol to methyl formate. A highly active bimetallic Pt/Ag/SBA-15 catalyst, selective to methyl formate and stable in methanol oxidation was constructed.
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Affiliation(s)
- Joanna Wisniewska
- Faculty of Chemistry, Adam Mickiewicz University in Poznań Uniwersytetu Poznańskiego 8 61-614 Poznań Poland +48 61 8291794
| | - Izabela Dziedzic
- Faculty of Chemistry, Adam Mickiewicz University in Poznań Uniwersytetu Poznańskiego 8 61-614 Poznań Poland +48 61 8291794
| | - Maria Ziolek
- Faculty of Chemistry, Adam Mickiewicz University in Poznań Uniwersytetu Poznańskiego 8 61-614 Poznań Poland +48 61 8291794
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Wisniewska J, Yang CM, Ziolek M. Changes in bimetallic silver – platinum catalysts during activation and oxidation of methanol and propene. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.03.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Metal nanoparticle–carbon nanotubes hybrid catalysts immobilized in a polymeric membrane for the reduction of 4-nitrophenol. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0357-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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11
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He C, Jiang Z, Ma M, Zhang X, Douthwaite M, Shi JW, Hao Z. Understanding the Promotional Effect of Mn2O3 on Micro-/Mesoporous Hybrid Silica Nanocubic-Supported Pt Catalysts for the Low-Temperature Destruction of Methyl Ethyl Ketone: An Experimental and Theoretical Study. ACS Catal 2018. [DOI: 10.1021/acscatal.7b04461] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chi He
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, People’s Republic of China
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Zeyu Jiang
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, People’s Republic of China
| | - Mudi Ma
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, People’s Republic of China
| | - Xiaodong Zhang
- Department of Environmental Science and Engineering, School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, People’s Republic of China
| | - Mark Douthwaite
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Jian-Wen Shi
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, People’s Republic of China
| | - Zhengping Hao
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, People’s Republic of China
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