1
|
Small palladium clusters and their adducts with atomic oxygen. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
2
|
Restuccia P, Ahmad EA, Harrison NM. A transferable prediction model of molecular adsorption on metals based on adsorbate and substrate properties. Phys Chem Chem Phys 2022; 24:16545-16555. [PMID: 35766802 DOI: 10.1039/d2cp01572b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Surface adsorption is one of the fundamental processes in numerous fields, including catalysis, the environment, energy and medicine. The development of an adsorption model which provides an effective prediction of binding energy in minutes has been a long term goal in surface and interface science. The solution has been elusive as identifying the intrinsic determinants of the adsorption energy for various compositions, structures and environments is non-trivial. We introduce a new and flexible model for predicting adsorption energies to metal substrates. The model is based on easily computed, intrinsic properties of the substrate and adsorbate, which are the same for all the considered systems. It is parameterised using machine learning based on first-principles calculations of probe molecules (e.g., H2O, CO2, O2, N2) adsorbed to a range of pure metal substrates. The model predicts the computed dissociative adsorption energy to metal surfaces with a correlation coefficient of 0.93 and a mean absolute error of 0.77 eV for the large database of molecular adsorption energies provided by Catalysis-Hub.org which have a range of 15 eV. As the model is based on pre-computed quantities it provides near-instantaneous estimates of adsorption energies and it is sufficiently accurate to eliminate around 90% of candidates in screening study of new adsorbates. The model, therefore, significantly enhances current efforts to identify new molecular coatings in many applied research fields.
Collapse
Affiliation(s)
- Paolo Restuccia
- Department of Chemistry, Imperial College London, 82 Wood Lane, London, W12 0BZ, UK.
| | - Ehsan A Ahmad
- Department of Chemistry, Imperial College London, 82 Wood Lane, London, W12 0BZ, UK.
| | - Nicholas M Harrison
- Department of Chemistry, Imperial College London, 82 Wood Lane, London, W12 0BZ, UK.
| |
Collapse
|
3
|
Pangh A, Esrafili MD, Nejad MR. A DFT investigation of CO and NO adsorption on Cu5Sc and Cu6Sc+ metallic clusters. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
4
|
Arakawa M, Horioka M, Minamikawa K, Kawano T, Terasaki A. Reaction of nitric oxide molecules on transition-metal-doped silver cluster cations: size- and dopant-dependent reaction pathways. Phys Chem Chem Phys 2021; 23:22947-22956. [PMID: 34622905 DOI: 10.1039/d1cp02882k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report size- and dopant-dependent reaction pathways as well as reactivity of gas-phase free AgnM+ (M = Sc-Ni) clusters interacting with NO. The reactivity of AgnM+, except for M = Cr and Mn, exhibits a minimum at a specific size, where the cluster cation possesses 18 or 20 valence electrons consisting of Ag 5s and dopant's 3d and 4s. The product ions range from NO adducts, AgnM(NO)m+, and oxygen adducts, AgnMOm+, to NO2 adducts, AgnM(NO2)m+. At small sizes, AgnMOm+ are the major products for M = Sc-V, whereas AgnM(NO)m+ dominate the products for M = Cr-Ni in striking contrast. In both cases, these reaction products are reminiscent of those from an atomic transition metal. However, the reaction pathways are different at least for M = Sc and Ti; kinetics measurements reveal that the present oxygen adducts are formed via NO adducts, while, for example, Ti+ is known to produce TiO+ directly by reaction with a single NO molecule. At larger sizes, on the other hand, AgnM(NO2)m+ are dominantly produced regardless of the dopant element because the dopant atom is encapsulated by the Ag host; the NO2 formation on the cluster is similar to that reported for undoped Agn+.
Collapse
Affiliation(s)
- Masashi Arakawa
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Masataka Horioka
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Kento Minamikawa
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Tomoki Kawano
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Akira Terasaki
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| |
Collapse
|
5
|
Hyper-Cross-Linked Polystyrene as a Stabilizing Medium for Small Metal Clusters. Molecules 2021; 26:molecules26175294. [PMID: 34500727 PMCID: PMC8433677 DOI: 10.3390/molecules26175294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/25/2021] [Accepted: 08/30/2021] [Indexed: 11/17/2022] Open
Abstract
Among different polymers nanostructured cross-linked aromatics have the greatest potential as catalytic supports due to their exceptional thermal and chemical stability and preservation of the active phase morphology. This work studies the ability of hyper-cross-linked polystyrene (HPS) to stabilize small Pdn and Ptn (n = 4 or 9) clusters. Unrestricted DFT calculations were carried out for benzene (BZ) adsorption at the BP level of theory using triple-zeta basis sets. The adsorption of BZ rings (stepwise from one to four) was found to result in noticeable gain in energy and stabilization of resulting adsorption complexes. Moreover, the interaction of metal clusters with HPS micropores was also addressed. For the first time, the incorporation of small clusters in the HPS structure was shown to influences its geometry resulting in the stabilization of polymer due to its partial relaxation.
Collapse
|
6
|
Wang J, Hao W, Ma LJ, Jia J, Wu HS. The structures, stabilities and electronic properties of PdnB (n = 1–10) clusters. COMPUT THEOR CHEM 2019. [DOI: 10.1016/j.comptc.2019.112554] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
7
|
Aal SA. Adsorption of NO on Pd and Pd2 supported at the regular and defective CdO (0 0 1) surfaces: Density functional theory study. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2018. [DOI: 10.1016/j.jtusci.2013.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Safa A. Aal
- Department of Chemistry, Faculty of Science and Arts, Qassim University, PO Box 6666, Qassim, Buraidah, Saudi Arabia
- Department of Chemistry, Faculty of Science, Benha University, PO Box 13518, Benha, Egypt
| |
Collapse
|
8
|
Cortese R, Schimmenti R, Prestianni A, Duca D. DFT calculations on subnanometric metal catalysts: a short review on new supported materials. Theor Chem Acc 2018. [DOI: 10.1007/s00214-018-2236-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
9
|
Salazar-Villanueva M, Bautista Hernandez A, Flores Mendez J, Peláez Cid AA, Valdez S. Adsorption of CO and NO molecules onto pentagonal clusters of aluminum: a DFT study. J Mol Model 2017; 23:332. [PMID: 29105031 DOI: 10.1007/s00894-017-3497-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 10/09/2017] [Indexed: 10/18/2022]
Abstract
DFT calculations were carried out in order to determine the electronic and structural properties of pentagonal Al n (I h and D 5d symmetries), Al n -CO, and Al n -NO clusters, where n = 7, 13, 19, 43, or 55 atoms. As n was increased, the bare clusters were found to exhibit a transition in electronic behavior (from semiconductor to conductor) at n = 43 atoms. Clusters with a bound CO or NO molecule also showed this behavior, although their HOMO-LUMO energy gaps were smaller than those for the corresponding bare clusters. As the size of the Al n -CO or Al n -NO cluster increased, the presence of extra p electrons improved the capacity of the cluster to adsorb a CO or NO molecule and resulted in an increase in the electronic charge directed from the aluminum atom at the adsorption site to the adsorbed species (CO or NO), thus strengthening the Al-CO or Al-NO bond. Furthermore, the Al n CO and Al n NO clusters with n = 43 and 55 exhibited chemisorption, as did the Al13-NO cluster; the other clusters presented physisorption, based on their adsorption energies. The tendency to adsorb either CO or NO increased with the size of the aluminum cluster. Graphical Abstract Adsorption of CO and NO molecules onto pentagonal clusters of aluminum: a DFT study.
Collapse
Affiliation(s)
- M Salazar-Villanueva
- Facultad de Ingeniería, Universidad Autónoma de Puebla, Apartado Postal J-39, CP 72570, Puebla, Mexico.
| | - A Bautista Hernandez
- Facultad de Ingeniería, Universidad Autónoma de Puebla, Apartado Postal J-39, CP 72570, Puebla, Mexico
| | - J Flores Mendez
- Facultad de Ingeniería, Universidad Autónoma de Puebla, Apartado Postal J-39, CP 72570, Puebla, Mexico.,Instituto Tecnológico de Puebla-División de Estudios de Posgrado e Investigación, Av. Tecnológico No. 420, Maravillas, CP 72220, Puebla, Pue, Mexico
| | - A A Peláez Cid
- Facultad de Ingeniería, Universidad Autónoma de Puebla, Apartado Postal J-39, CP 72570, Puebla, Mexico
| | - S Valdez
- Instituto de Ciencias Físicas-UNAM, Av. Universidad S/N, Col. Chamilpa, ZC 062210, Cuernavaca, Morelos, Mexico
| |
Collapse
|
10
|
Begum P, Deka RC. A Comparative DFT Study on the Catalytic Oxidation of Nitric Oxide by Pd2 and PdM (M = Cu, Rh, Ag, Au, Pt). Catal Letters 2016. [DOI: 10.1007/s10562-016-1933-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
11
|
Kalita B. Tuning the Adsorption of Elemental Mercury by Small Gas-Phase Palladium Clusters: First-Principles Study. J Phys Chem A 2016; 120:7714-7731. [DOI: 10.1021/acs.jpca.6b06910] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bulumoni Kalita
- Department of Physics, Dibrugarh University, Dibrugarh, Assam 786004, India
| |
Collapse
|
12
|
Li L, Wang W, Wang X, Zhang L. Investigating the mechanism of the selective hydrogenation reaction of cinnamaldehyde catalyzed by Ptn clusters. J Mol Model 2016; 22:186. [DOI: 10.1007/s00894-016-3039-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 06/17/2016] [Indexed: 11/29/2022]
|
13
|
|
14
|
Li JN, Pu M, Ma CC, Tian Y, He J, Evans DG. The effect of palladium clusters (Pdn, n=2–8) on mechanisms of acetylene hydrogenation: A DFT study. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcata.2012.03.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|