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Xu S, Jiang L, Huang X, Ju W, Liang Y, Tao Z, Yang Y, Zhu B, Wei G. Efficient formaldehyde sensor based on PtPd nanoparticles-loaded nafion-modified electrodes. NANOTECHNOLOGY 2023; 35:025704. [PMID: 37804824 DOI: 10.1088/1361-6528/ad0124] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 10/06/2023] [Indexed: 10/09/2023]
Abstract
The noble metal-based electrochemical sensor design for efficient and stable formaldehyde(FA) detection is important ongoing research. In this paper, PtPd/Nafion/GCE is prepared by electrochemical cyclic voltammetry deposition method based on electrodepositing nanostructured platinum (Pt)-palladium (Pd) nanoparticles in Nafion film-coated glassy carbon electrode (GCE). The influence of deposition parameters and chemical composition (atomic ratio of Pt and Pd) on the electrochemical behaviour of PtPd/Nafion/GCE has been investigated. PtPd/Nafion/GCE displays a remarked electrocatalytic activity for the oxidation of FA and exhibits a linear relationship in the range of 10-5000μM, with a detection limit of 3.3μM in 0.1 M H2SO4solution. It is proved that the detection performance of PtPd/Nafion/GCE electrode is valuable for further application with low detection limit, wide linear range, favourable selectivity and high response.
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Affiliation(s)
- Shuting Xu
- College of Materials and Chemistry, China Jiliang University, Hangzhou, 310018, People's Republic of China
| | - Li Jiang
- College of Materials and Chemistry, China Jiliang University, Hangzhou, 310018, People's Republic of China
| | - Xiaowei Huang
- College of Materials and Chemistry, China Jiliang University, Hangzhou, 310018, People's Republic of China
| | - Wentao Ju
- College of Materials and Chemistry, China Jiliang University, Hangzhou, 310018, People's Republic of China
| | - Yanxia Liang
- College of Materials and Chemistry, China Jiliang University, Hangzhou, 310018, People's Republic of China
| | - Zhu Tao
- College of Materials and Chemistry, China Jiliang University, Hangzhou, 310018, People's Republic of China
| | - Yumeng Yang
- College of Materials and Chemistry, China Jiliang University, Hangzhou, 310018, People's Republic of China
| | - Benfeng Zhu
- College of Materials and Chemistry, China Jiliang University, Hangzhou, 310018, People's Republic of China
| | - Guoying Wei
- College of Materials and Chemistry, China Jiliang University, Hangzhou, 310018, People's Republic of China
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2
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Wang C, Zhang X, Li J, Qi X, Guo Z, Wei H, Chu H. Gold Nanoparticles on Nanosheets Derived from Layered Rare-Earth Hydroxides for Catalytic Glycerol-to-Lactic Acid Conversion. ACS APPLIED MATERIALS & INTERFACES 2021; 13:522-530. [PMID: 33393772 DOI: 10.1021/acsami.0c17732] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Layered rare-earth hydroxides (LREHs), as a series of special lamellar compounds having a similar structure to layered double hydroxides (LDHs), are becoming a new type of catalyst materials. In this study, we have prepared a series of uniform LREH (RE = Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, and Tm) nanosheets through a reverse-microemulsion method. After deposition-precipitation of HAuCl4 and calcination, supported Au catalysts (denoted as Au/LREO) were subsequently obtained. The catalytic properties of all the derived Au/LREO catalysts were evaluated by aerobic conversion of glycerol to lactic acid under mild conditions (90 °C, 1 atm). Among these catalysts, Au/LPrO displays the best performances, including the highest glycerol conversion, lactic acid, and C3 product selectivity. Both the catalytic activities and the characterizations of the structure of Au/LREO indicate that the kind of rare-earth ions plays a key role in determining the Au particle size and its valence state and reducibility, which are the important factors correlated with the catalytic activities in glycerol conversion. In fact, the three features of gold particles, the extra-small size (∼3 nm), high content of Au0 species, and high reducibility, are the essential prerequisites for achieving the superior catalytic performance of Au/LPrO.
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Affiliation(s)
- Congying Wang
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Xueqiong Zhang
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Jiefei Li
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Xingyue Qi
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Ziyang Guo
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Hang Wei
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Haibin Chu
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
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Qian J, Gao X, Pan B. Nanoconfinement-Mediated Water Treatment: From Fundamental to Application. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:8509-8526. [PMID: 32511915 DOI: 10.1021/acs.est.0c01065] [Citation(s) in RCA: 107] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Safe and clean water is of pivotal importance to all living species and the ecosystem on earth. However, the accelerating economy and industrialization of mankind generate water pollutants with much larger quantity and higher complexity than ever before, challenging the efficacy of traditional water treatment technologies. The flourishing researches on nanomaterials and nanotechnologies in the past decade have generated new understandings on many fundamental processes and brought revolutionary upgrades to various traditional technologies in almost all areas, including water treatment. An indispensable step toward the real application of nanomaterials in water treatment is to confine them in large processable substrate to address various inherent issues, such as spontaneous aggregation, difficult operation and potential environmental risks. Strikingly, when the size of the spatial restriction provided by the substrate is on the order of only one or several nanometers, referred to as nanoconfinement, the phase behavior of matter and the energy diagram of a chemical reaction could be utterly changed. Nevertheless, the relationship between such changes under nanoconfinement and their implications for water treatment is rarely elucidated systematically. In this Critical Review, we will briefly summarize the current state-of-the-art of the nanomaterials, as well as the nanoconfined analogues (i.e., nanocomposites) developed for water treatment. Afterward, we will put emphasis on the effects of nanoconfinement from three aspects, that is, on the structure and behavior of water molecules, on the formation (e.g., crystallization) of confined nanomaterials, and on the nanoenabled chemical reactions. For each aspect, we will build the correlation between the nanoconfinement effects and the current studies for water treatment. More importantly, we will make proposals for future studies based on the missing links between some of the nanoconfinement effects and the water treatment technologies. Through this Critical Review, we aim to raise the research attention on using nanoconfinement as a fundamental guide or even tool to advance water treatment technologies.
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Affiliation(s)
- Jieshu Qian
- Research Center for Environmental Nanotechnology (ReCENT), School of Environment, Nanjing University, Nanjing 210023 China
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Xiao Ling Wei 200, Nanjing 210094 China
| | - Xiang Gao
- Research Center for Environmental Nanotechnology (ReCENT), School of Environment, Nanjing University, Nanjing 210023 China
| | - Bingcai Pan
- Research Center for Environmental Nanotechnology (ReCENT), School of Environment, Nanjing University, Nanjing 210023 China
- State Key Laboratory of Pollution Control and Resources Reuse, Nanjing University, Nanjing 210023 China
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Murata K, Ogura K, Ohyama J, Sawabe K, Yamamoto Y, Arai S, Satsuma A. Selective Hydrogenation of Cinnamaldehyde over the Stepped and Plane Surface of Pd Nanoparticles with Controlled Morphologies by CO Chemisorption. ACS APPLIED MATERIALS & INTERFACES 2020; 12:26002-26012. [PMID: 32429665 DOI: 10.1021/acsami.0c05938] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Carbon monoxide (CO) molecules are attracting attention as capping agents that control the structure of metal nanoparticles. In this study, we aimed to control the shape and surface structure of Pd particles by reducing the supported Pd precursor with CO. The reduction of Pd nanoparticles with CO promoted the exposure of step sites and generated spherical and concave-tetrahedral Pd particles on carbon and SiO2 supports. On the other hand, conventional H2-reduced Pd particles show a flattened shape. The preferential exposure of the step sites by the adsorbed CO molecules was supported by the density functional theory-calculated surface energy and the Wulff construction. Morphology- and surface-controlled Pd nanoparticles were used to study the surface structure and morphology effects of Pd nanoparticles on cinnamaldehyde (CAL) hydrogenation. With an increase in the fraction of step sites on Pd nanoparticles, the hydrogenation activity and selectivity of hydrocinnamaldehyde (HCAL) increased. On step sites, the adsorption of the C═C bond of CAL proceeded preferentially, and HCAL was efficiently and selectively generated.
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Affiliation(s)
- Kazumasa Murata
- Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Keiji Ogura
- Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Junya Ohyama
- Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
| | - Kyoichi Sawabe
- Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Yuta Yamamoto
- Institute of Materials and Systems for Sustainability, Nagoya University, Nagoya 464-8603, Japan
| | - Shigeo Arai
- Institute of Materials and Systems for Sustainability, Nagoya University, Nagoya 464-8603, Japan
| | - Atsushi Satsuma
- Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
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Chen P, Murugappan K, Castell MR. Shapes of epitaxial gold nanocrystals on SrTiO3 substrates. Phys Chem Chem Phys 2020; 22:4416-4428. [DOI: 10.1039/c9cp06801e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Morphological control of gold nanocrystals is important as their catalytic and optical properties are highly shape dependent.
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Affiliation(s)
- Peiyu Chen
- Department of Materials
- University of Oxford
- Parks Road
- Oxford
- UK
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6
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van Deelen TW, Hernández Mejía C, de Jong KP. Control of metal-support interactions in heterogeneous catalysts to enhance activity and selectivity. Nat Catal 2019. [DOI: 10.1038/s41929-019-0364-x] [Citation(s) in RCA: 652] [Impact Index Per Article: 130.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ahmadi M, Timoshenko J, Behafarid F, Roldan Cuenya B. Tuning the Structure of Pt Nanoparticles through Support Interactions: An in Situ Polarized X-ray Absorption Study Coupled with Atomistic Simulations. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2019; 123:10666-10676. [PMID: 31049123 PMCID: PMC6487391 DOI: 10.1021/acs.jpcc.9b00945] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/25/2019] [Indexed: 05/31/2023]
Abstract
Interactions of nanoparticles (NPs) with their environment may have a pronounced effect on their structure and shape as well as on their functionality in applications such as catalysis. It is therefore crucial to disentangle the particle-adsorbate and particle-support interaction effects on the particle shape, its local structure, atomic dynamics, and its possible anisotropies. In order to gain insight into the support effect, we carried out an X-ray absorption fine-structure spectroscopy (XAFS) investigation of adsorbate- and ligand-free size-selected Pt NPs deposited on two different supports in ultrahigh vacuum. Polarization-dependent XAFS measurements, neural network-based analysis of X-ray absorption near-edge structure data, and reverse Monte Carlo (RMC) simulations of extended X-ray absorption fine structure (EXAFS) were used to resolve the 3D shape of the NPs and details of their local structure. A synergetic combination of advanced in situ XAFS analysis with atomic force microscopy and scanning tunneling microscopy (STM) imaging provides uniquely detailed information about the particle-support interactions and the NP/support buried interface, not accessible to any experimental technique, when considered alone. In particular, our combined approach reveals differences in the structure of Pt NPs deposited on TiO2(110) and SiO2/Si(111). Pt NPs on SiO2 assume a spherical-like 3D shape and weakly interact with the support. In contrast, the effective shape of analogously synthesized Pt NPs on TiO2(110) after annealing at 600 °C is found to be a truncated octahedron with (100) top and interfacial facets that are encapsulated by the TiO2 support. Modeling disorder effects in these NPs using an RMC approach reveals differences in bond-length distributions for NPs on different supports and allows us to analyze their anisotropy, which may be crucial for the interpretation of support-dependent atomic dynamics and can have an impact on the understanding of the catalytic properties of these NPs.
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Affiliation(s)
- M. Ahmadi
- Department
of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - J. Timoshenko
- Department
of Interface Science, Fritz-Haber-Institute
of the Max Planck Society, 14195 Berlin, Germany
| | - F. Behafarid
- Department
of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - B. Roldan Cuenya
- Department
of Physics, University of Central Florida, Orlando, Florida 32816, United States
- Department
of Interface Science, Fritz-Haber-Institute
of the Max Planck Society, 14195 Berlin, Germany
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Nguyen NT, Nelayah J, Alloyeau D, Wang G, Piccolo L, Afanasiev P, Ricolleau C. Thermodynamics of faceted palladium(-gold) nanoparticles supported on rutile titania nanorods studied using transmission electron microscopy. Phys Chem Chem Phys 2018; 20:13030-13037. [PMID: 29708561 DOI: 10.1039/c8cp00737c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Many physical properties of nanoparticles (NPs) are driven by their equilibrium shape (ES). Thus, knowing the kinetic and thermodynamic parameters that affect the particle morphology is key for the rational design of NPs with targeted properties. Here, we report on the thermodynamic ES of supported monometallic palladium and bimetallic palladium-gold (Pd-Au) single-crystalline truncated nano-octahedra (TOs) studied using aberration-corrected transmission electron microscopy (TEM). Monometallic palladium and bimetallic Pd62Au38 and Pd43Au57 TOs were grown by pulsed laser deposition on rutile titania (r-TiO2) nanorods exposing mainly (110) facets. Particle structure and dimension were first obtained from aberration-corrected high resolution TEM (HRTEM) images acquired parallel to the metal-oxide interface. By fitting an extended Wulff-Kaishev rule to the HRTEM data of the truncated octahedral thermodynamic ES in the size range of 2 to 5 nm, we secondly determined the interface and excess line energies associated with the particle-oxide-vacuum triple phase junction in Pd and Pd43Au57 TOs in the epitaxial relationship Pd(-Au)(111)101‖r-TiO2(110)[1-1-1] and in Pd62Au38 TOs in the epitaxial relationship Pd62Au38(100)101‖r-TiO2(110)[1-10]. Our results show a decrease in particle adhesion to the oxide support upon alloying Pd with Au. The loss in adhesion is tentatively attributed to an increase of the lattice strain induced at the metal-oxide interface as gold atoms are added to the palladium lattice.
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Affiliation(s)
- Nhat Tai Nguyen
- Université Paris Diderot, Sorbonne Paris Cité, CNRS, Laboratoire Matériaux et Phénomènes Quantiques, UMR 7162, 75013, Paris, France.
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Gatin AK, Grishin MV, Sarvadii SY, Slutskii VG, Kharitonov VA, Shub BR, Kulak AI. Physicochemical Properties of Nanoparticles: Interaction of Supported Platinum Nanoparticles with Gaseous Reactants. KINETICS AND CATALYSIS 2018. [DOI: 10.1134/s0023158418020088] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Kareem H, Shan S, Wu ZP, Velasco L, Moseman K, O'Brien CP, Tran DT, Lee IC, Maswadeh Y, Yang L, Mott D, Luo J, Petkov V, Zhong CJ. Catalytic oxidation of propane over palladium alloyed with gold: an assessment of the chemical and intermediate species. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01704b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The surface intermediate species for catalytic oxidation of propane depend strongly on the catalyst composition.
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Ahmadi M, Mistry H, Roldan Cuenya B. Tailoring the Catalytic Properties of Metal Nanoparticles via Support Interactions. J Phys Chem Lett 2016; 7:3519-33. [PMID: 27530730 DOI: 10.1021/acs.jpclett.6b01198] [Citation(s) in RCA: 130] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The development of new catalysts for energy technology and environmental remediation requires a thorough knowledge of how the physical and chemical properties of a catalyst affect its reactivity. For supported metal nanoparticles (NPs), such properties can include the particle size, shape, composition, and chemical state, but a critical parameter which must not be overlooked is the role of the NP support. Here, we highlight the key mechanisms behind support-induced enhancement in the catalytic properties of metal NPs. These include support-induced changes in the NP morphology, stability, electronic structure, and chemical state, as well as changes in the support due to the NPs. Utilizing the support-dependent phenomena described in this Perspective may allow significant breakthroughs in the design and tailoring of the catalytic activity and selectivity of metal nanoparticles.
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Affiliation(s)
- M Ahmadi
- Department of Physics, University of Central Florida , Orlando, Florida 32816, United States
| | - H Mistry
- Department of Physics, University of Central Florida , Orlando, Florida 32816, United States
- Department of Physics, Ruhr-University Bochum , 44801 Bochum, Germany
| | - B Roldan Cuenya
- Department of Physics, Ruhr-University Bochum , 44801 Bochum, Germany
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