1
|
Joshi H, Wilde N, Asche TS, Wolf D. Developing Catalysts via Structure‐Property Relations Discovered by Machine Learning: An Industrial Perspective. CHEM-ING-TECH 2022. [DOI: 10.1002/cite.202200071] [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)
- Hrishikesh Joshi
- Evonik Operations GmbH Rodenbacher Chaussee 4 63457 Hanau Germany
| | - Nicole Wilde
- Evonik Operations GmbH Rodenbacher Chaussee 4 63457 Hanau Germany
| | - Thomas S. Asche
- Evonik Operations GmbH Paul-Baumann-Straße 1 45772 Marl Germany
| | - Dorit Wolf
- Evonik Operations GmbH Rodenbacher Chaussee 4 63457 Hanau Germany
| |
Collapse
|
2
|
Thang HV, Chen HYT. Do stoichiometric or nonstoichiometric models of a polar surface affect their structural, energetic and electronic structure properties? A DFT case study of Ru/MgO(111). JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:214007. [PMID: 35189606 DOI: 10.1088/1361-648x/ac5704] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
The structural, energetic and electronic structure properties of stoichiometric and nonstoichiometric slab models of bare MgO(111) and Ru/MgO(111) with different coverages of 1 monolayer (ML), 1/4 ML and 1/16 ML have been investigated using spin-polarized density functional theory. Calculated results show that the structural, energetic properties and charge transfer of both bare MgO(111) and Ru/MgO(111) are independent of the stoichiometric and nonstoichiometric models. In contrast, their density of state (DOS) profiles demonstrate metal and half-metal characters for the stoichiometric and nonstoichiometric bare MgO(111) surfaces, respectively. The Ru-O orbital coupling characters of these two types of Ru/MgO(111) models are also different. This work indicates that for a polar surface model, the calculated features and trends of the structural and energetic properties, charge distributions and magnetic structures might not be affected by their stoichiometric and nonstoichiometric models; however, the detailed features of their DOS features would strongly depend on the models constructed.
Collapse
Affiliation(s)
- Ho Viet Thang
- The University of Danang, University of Science and Technology, 54 Nguyen Luong Bang, Danang 550000, Vietnam
| | - Hsin-Yi Tiffany Chen
- Department of Engineering and System Science, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Road, Hsinchu 300044, Taiwan
| |
Collapse
|
3
|
Musib D, Ramu V, Raza MK, Upadhyay A, Pal M, Kunwar A, Roy M. La(iii)–curcumin-functionalized gold nanocomposite as a red light-activatable mitochondria-targeting PDT agent. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01045j] [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
Functionalization of La(iii)–curcumin to gold nanoparticles resulted in remarkable red-shifted UV-visible absorption and exhibited remarkable differential photodynamic ability towards cancer cells upon red-light activation.
Collapse
Affiliation(s)
- Dulal Musib
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal West, 795004, Manipur, India
| | - Vanitha Ramu
- Department of Inorganic and Physical Chemistry, Indian Institute of Science Bangalore, Bangalore-560012, India
| | - Md Kausar Raza
- Department of Inorganic and Physical Chemistry, Indian Institute of Science Bangalore, Bangalore-560012, India
| | - Aarti Upadhyay
- Department of Inorganic and Physical Chemistry, Indian Institute of Science Bangalore, Bangalore-560012, India
| | - Maynak Pal
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal West, 795004, Manipur, India
| | - Amit Kunwar
- Radiation and Photochemistry Division, Bhaba Atomic Research Centre, Anushaktinagar, Mumbai-400094, India
| | - Mithun Roy
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal West, 795004, Manipur, India
| |
Collapse
|
4
|
Hermawan A, Hanindriyo AT, Ramadhan ER, Asakura Y, Hasegawa T, Hongo K, Inada M, Maezono R, Yin S. Octahedral morphology of NiO with (111) facet synthesized from the transformation of NiOHCl for the NOx detection and degradation: experiment and DFT calculation. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00682c] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
NiO with polar (111) facets was successfully synthesized from the transformation of a layered NiOHCl, exhibiting excellent NOx detection and degradation activity.
Collapse
Affiliation(s)
- Angga Hermawan
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM)
- Tohoku University 2-1-1 Katahira
- Sendai
- Japan
| | | | | | - Yusuke Asakura
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM)
- Tohoku University 2-1-1 Katahira
- Sendai
- Japan
| | - Takuya Hasegawa
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM)
- Tohoku University 2-1-1 Katahira
- Sendai
- Japan
| | - Kenta Hongo
- School of Information Science
- JAIST
- Nomi
- Japan
- Research Center for Advanced Computing Infrastructure
| | - Miki Inada
- Center of Advanced Instrumental Analysis
- Kyushu University
- Kasuga-Shi
- Japan
| | | | - Shu Yin
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM)
- Tohoku University 2-1-1 Katahira
- Sendai
- Japan
| |
Collapse
|
5
|
Albero J, Mateo D, García H. Graphene-Based Materials as Efficient Photocatalysts for Water Splitting. Molecules 2019; 24:E906. [PMID: 30841539 PMCID: PMC6429481 DOI: 10.3390/molecules24050906] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 02/26/2019] [Accepted: 02/28/2019] [Indexed: 01/20/2023] Open
Abstract
Photocatalysis has been proposed as one of the most promising approaches for solar fuel production. Among the photocatalysts studied for water splitting, graphene and related materials have recently emerged as attractive candidates due to their striking properties and sustainable production when obtained from biomass wastes. In most of the cases reported so far, graphene has been typically used as additive to enhance its photocatalytic activity of semiconductor materials as consequence of the improved charge separation and visible light harvesting. However, graphene-based materials have demonstrated also intrinsic photocatalytic activity towards solar fuels production, and more specifically for water splitting. The photocatalytic activity of graphene derives from defects generated during synthesis or their introduction through post-synthetic treatments. In this short review, we aim to summarize the most representative examples of graphene based photocatalysts and the different approaches carried out in order to improve the photocatalytic activity towards water splitting. It will be presented that the introduction of defects in the graphenic lattice as well as the incorporation of small amounts of metal or metal oxide nanoparticles on the graphene surface improve the photocatalytic activity of graphene. What is more, a simple one-step preparation method has demonstrated to provide crystal orientation to the nanoparticles strongly grafted on graphene resulting in remarkable photocatalytic properties. These two features, crystal orientation and strong grafting, have been identified as a general methodology to further enhance the photocatalytic activity in graphenebased materials for water splitting. Finally, future prospects in this filed will be also commented.
Collapse
Affiliation(s)
- Josep Albero
- Instituto Universitario de Tecnología Química CSIC-UPV (ITQ), Avda. de los Naranjos s/n, 46022 Valencia, Spain.
| | - Diego Mateo
- Instituto Universitario de Tecnología Química CSIC-UPV (ITQ), Avda. de los Naranjos s/n, 46022 Valencia, Spain.
| | - Hermenegildo García
- Instituto Universitario de Tecnología Química CSIC-UPV (ITQ), Avda. de los Naranjos s/n, 46022 Valencia, Spain.
| |
Collapse
|
6
|
LI SY, LÜ S, ZHANG YH, LI JL, LIU ZN, WANG L. Syngas-derived olefins over iron-based catalysts: Effects of basic properties of MgO nanocrystals. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/s1872-5813(18)30054-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
7
|
Towards the geometric structure of small supported Au 9 clusters on Si. Sci Rep 2018; 8:12371. [PMID: 30120308 PMCID: PMC6098063 DOI: 10.1038/s41598-018-30750-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 08/03/2018] [Indexed: 11/08/2022] Open
Abstract
Ultra-small clusters containing few atoms are of high interest in both fundamental research and applications due to their specific functional, magnetic or chemical properties which depend on size and composition. The experimental results of the morphology of the size-selected clusters, consisting of few atoms can be an ideal benchmark for sophisticated theoretical models. With this motivation we have investigated the geometrical structure of mass-selected Au9 clusters deposited on a silicon substrate prepared by soft-landing conditions. We present results obtained experimentally by Grazing-Incidence Small-Angle X-ray Scattering (GISAXS). Considering the ultra-small size of the clusters and small quantities of material on the surface, we combined advanced techniques which allowed us to investigate the surface structure of the sample. The resulting structural sizes are in concordance with cluster theory. Using a model-based approach, the advanced X-ray techniques allow for understanding how to resolve the possible cluster structure, identify optimal experimental conditions and obtain the probable morphological information which is challenging to be obtained otherwise.
Collapse
|
8
|
CO Oxidation at 20 °C on Au Catalysts Supported on Mesoporous Silica: Effects of Support Structural Properties and Modifiers. MATERIALS 2018; 11:ma11060948. [PMID: 29867061 PMCID: PMC6025171 DOI: 10.3390/ma11060948] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 05/28/2018] [Accepted: 06/01/2018] [Indexed: 11/17/2022]
Abstract
In this work we report the effects of support structural properties and its modification with some metal oxides modifiers on the catalytic behavior of Au catalysts in the total CO oxidation at 20 °C. Au catalysts were supported on mesoporous silica materials (MSM) having different structural properties: Channel-like (SBA-15), cage-like (SBA-16), hexagonal (HMS), and disordered (DMS-1) structures. The effect of the modifier was evaluated by comparison of the catalytic response of the SBA-15-based catalysts modified with MgO, Fe₂O₃, TiO₂, and CeO₂. The chemical, structural, and electronic properties of the catalysts were investigated by a variety of techniques (metal content analysis by ICP-OES, N₂ physisorption, XRD, UV-vis DRS, DRIFTS of adsorbed CO and OH regions, oxygen storage capacity (OSC), HR-TEM, and XPS). The activity of calcined catalysts in the CO oxidation reaction were evaluated at steady state conditions, at 20 °C, atmospheric pressure, and when using, as feed, a 1%CO/1%O₂/98% gas mixture. The work clearly demonstrated that all Au catalysts supported on the mesoporous silicas modified with metal oxides were more active than the Au/SBA-15 and Au/MgO reference ones. The support structural properties and type of dopant were important factors influencing on the catalyst behavior. Concerning the support textural properties, it was found that the HMS substrate with the wormhole-structure offers better porosity and specific surface area than their silica counterparts having channel-like (SBA-15), cage-like (SBA-16), and disordered (DMS-1) mesoporous structures. Concerning the effect of modifier, the best catalytic response was achieved with the catalysts modified with MgO. After activation by calcination at 200 °C for 4 h, the Au/MgO/HMS catalyst exhibited the best catalytic performance, which was ascribed to the combined effects of the best structural properties, a large support oxygen storage capacity and homogeneous distribution of gold particles on the support (external and inner). Implications of the type of active sites (Au1+ or Au⁰), support structural properties and role of modifier on the catalytic activity are discussed.
Collapse
|
9
|
Xin W, Severino J, De Rosa IM, Yu D, Mckay J, Ye P, Yin X, Yang JM, Carlson L, Kodambaka S. One-Step Synthesis of Tunable-Size Gold Nanoplates on Graphene Multilayers. NANO LETTERS 2018; 18:1875-1881. [PMID: 29406754 DOI: 10.1021/acs.nanolett.7b05173] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Au nanoplates (quasi-two-dimensional single crystals) are most commonly synthesized using a mixture of Au precursors via approaches involving multiple processing steps and the use of seed crystals. Here, we report the synthesis of truncated-hexagonal {111}-oriented micrometer-scale Au nanoplates on graphene multilayers using only potassium tetrabromoaurate (KAuBr4) as the precursor. We demonstrate that the nanoplate sizes can be controllably varied from tens of nanometers up to a few micrometers by introducing desired concentrations of chloroauric acid (HAuCl4) to KAuBr4 and their thicknesses from ∼13 to ∼46 nm with the synthesis time. Through a series of experiments carried out as a function of synthesis time and precursor composition [mixtures of HAuCl4 and KAuBr4, KBr, or ionic liquid 1-butyl-3-methylimidazolium bromide ([Bmim]Br)], we identify the optimal HAuCl4 and KAuBr4 concentrations and synthesis times that yield the largest and the thinnest size nanoplates. We show that the nanoplates are kinetically limited morphologies resulting from preferential growth of {111} facets facilitated by bromide ions in KAuBr4 solutions; we suggest that the presence of chloride ions enhances the rate of Au deposition and the relative concentration of chloride and bromide ions determines the shape anisotropy of resulting crystals. Our results provide new insights into the kinetics of nanoplate formation and show that a single precursor containing both Au and Br is sufficient to crystallize nanoplates on graphitic layers, which serve as reducing agent while enabling the nucleation and growth of Au nanoplates. We suggest that a similar approach may be used for the synthesis of nanoplates of other metals on weakly interacting van der Waals layers for, potentially, a variety of new applications.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Xunqian Yin
- School of Materials Science and Engineering , Shandong University of Science and Technology , 579 Qianwangang Road, Economic & Technological Development Zones , Qingdao , Shandong 26650 , China
| | | | | | | |
Collapse
|
10
|
Cadi-Essadek A, Roldan A, de Leeuw NH. Stability and mobility of supported Nin (n = 1–10) clusters on ZrO2(111) and YSZ(111) surfaces: a density functional theory study. Faraday Discuss 2018; 208:87-104. [DOI: 10.1039/c7fd00217c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We have used spin polarized density functional theory (DFT) to evaluate the geometrical resilience of Ni clusters on ZrO2(111) and YSZ(111).
Collapse
|
11
|
Hemmingson SL, Feeley GM, Miyake NJ, Campbell CT. Energetics of 2D and 3D Gold Nanoparticles on MgO(100): Influence of Particle Size and Defects on Gold Adsorption and Adhesion Energies. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03173] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Stephanie L. Hemmingson
- Department of Chemistry, University of Washington, Campus Box
351700 Seattle, Washington 98189-1700, United States
| | - Gabriel M. Feeley
- Department of Chemistry, University of Washington, Campus Box
351700 Seattle, Washington 98189-1700, United States
| | - Naomi J. Miyake
- Department of Chemistry, University of Washington, Campus Box
351700 Seattle, Washington 98189-1700, United States
| | - Charles T. Campbell
- Department of Chemistry, University of Washington, Campus Box
351700 Seattle, Washington 98189-1700, United States
| |
Collapse
|
12
|
Pichugina DA, Kuz'menko NE, Shestakov AF. Ligand-protected gold clusters: the structure, synthesis and applications. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4493] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
13
|
High catalytic activity of oriented 2.0.0 copper(I) oxide grown on graphene film. Nat Commun 2015; 6:8561. [PMID: 26509224 PMCID: PMC4634216 DOI: 10.1038/ncomms9561] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 09/04/2015] [Indexed: 11/09/2022] Open
Abstract
Metal oxide nanoparticles supported on graphene exhibit high catalytic activity for oxidation, reduction and coupling reactions. Here we show that pyrolysis at 900 °C under inert atmosphere of copper(II) nitrate embedded in chitosan films affords 1.1.1 facet-oriented copper nanoplatelets supported on few-layered graphene. Oriented (1.1.1) copper nanoplatelets on graphene undergo spontaneous oxidation to render oriented (2.0.0) copper(I) oxide nanoplatelets on few-layered graphene. These films containing oriented copper(I) oxide exhibit as catalyst turnover numbers that can be three orders of magnitude higher for the Ullmann-type coupling, dehydrogenative coupling of dimethylphenylsilane with n-butanol and C–N cross-coupling than those of analogous unoriented graphene-supported copper(I) oxide nanoplatelets. Supported metal nanoparticles have been widely used as heterogeneous catalysts. Here, the authors report the synthesis of (1.1.1) copper on few layer graphene which oxidize to orientated (2.0.0) copper(I) oxide nanoplatelets which display high catalytic activity for a number of organic coupling reactions.
Collapse
|
14
|
Wang Z, Xu C, Wang H. A Facile Preparation of Highly Active Au/MgO Catalysts for Aerobic Oxidation of Benzyl Alcohol. Catal Letters 2014. [DOI: 10.1007/s10562-014-1344-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
15
|
Li Z, Ji Y, Cadigan C, Richards RM. Thermally stable gold/alumina aerogel catalysts prepared by a simultaneous synthesis process for solvent-free aerobic benzyl alcohol oxidation. Catal Sci Technol 2014. [DOI: 10.1039/c3cy01064c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gold nanoparticles physically trapped in the framework of alumina aerogel exhibit excellent thermal stability and catalytic activity at high temperature.
Collapse
Affiliation(s)
- Z. Li
- Department of Chemistry and Geochemistry
- Colorado School of Mines
- , USA
- Chemical and Materials Engineering
- University of Alberta
| | - Y. Ji
- Department of Chemistry and Geochemistry
- Colorado School of Mines
- , USA
| | - C. Cadigan
- Department of Chemistry and Geochemistry
- Colorado School of Mines
- , USA
| | - R. M. Richards
- Department of Chemistry and Geochemistry
- Colorado School of Mines
- , USA
| |
Collapse
|
16
|
|
17
|
Cadigan CA, Corpuz AR, Lin F, Caskey CM, Finch KBH, Wang X, Richards RM. Nanoscale (111) faceted rock-salt metal oxides in catalysis. Catal Sci Technol 2013. [DOI: 10.1039/c2cy20373a] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
18
|
Tsukamoto D, Shiro A, Shiraishi Y, Sugano Y, Ichikawa S, Tanaka S, Hirai T. Photocatalytic H2O2 Production from Ethanol/O2 System Using TiO2 Loaded with Au–Ag Bimetallic Alloy Nanoparticles. ACS Catal 2012. [DOI: 10.1021/cs2006873] [Citation(s) in RCA: 293] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daijiro Tsukamoto
- Research Center for Solar Energy
Chemistry, and Division of Chemical Engineering, Graduate School of
Engineering Science, Osaka University,
Toyonaka 560-8531, Japan
| | - Akimitsu Shiro
- Research Center for Solar Energy
Chemistry, and Division of Chemical Engineering, Graduate School of
Engineering Science, Osaka University,
Toyonaka 560-8531, Japan
| | - Yasuhiro Shiraishi
- Research Center for Solar Energy
Chemistry, and Division of Chemical Engineering, Graduate School of
Engineering Science, Osaka University,
Toyonaka 560-8531, Japan
| | - Yoshitsune Sugano
- Research Center for Solar Energy
Chemistry, and Division of Chemical Engineering, Graduate School of
Engineering Science, Osaka University,
Toyonaka 560-8531, Japan
| | - Satoshi Ichikawa
- Institute for NanoScience Design, Osaka University, Toyonaka 560-8531, Japan
| | - Shunsuke Tanaka
- Department of Chemical, Energy and Environmental Engineering, Kansai University, Suita 564-8680, Japan
| | - Takayuki Hirai
- Research Center for Solar Energy
Chemistry, and Division of Chemical Engineering, Graduate School of
Engineering Science, Osaka University,
Toyonaka 560-8531, Japan
| |
Collapse
|