Controlled growth of uniform two-dimensional ZnO overlayers on Au(111) and surface hydroxylation

Wu, Hao; Fu, Qiang; Li, Yifan; Cui, Yi; Wang, Rui; Su, Nan; Lin, Le; Dong, Aiyi; Ning, Yanxiao; Yang, Fan; Bao, Xinhe

doi:10.1007/s12274-019-2373-0

Cited by 37 publications

(24 citation statements)

References 55 publications

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“…However, the structural complexity of the practical heterogeneous catalysts has made the direct studies of active sites and corresponding catalytic mechanism challenging, in particular for oxide catalysts under reaction conditions. Model catalytic systems built in an ultrahigh-vacuum (UHV) environment and characterized by means of surface science techniques can provide an opportunity to understand the detailed reaction mechanism. − …”

Section: Introductionmentioning

confidence: 99%

Dynamic Structural Evolution of Mn–Au Alloy and MnO_x Nanostructures on Au(111) under Different Atmospheres

et al. 2021

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Construction of inverse oxide/metal model catalyst with specific chemical composition and interfacial structure is essential for clarifying their structure−performance relationship. This work describes the structural evolution of Mn−Au surface alloy and two-dimensional manganese oxide (MnO x ) islands on Au(111) surface under different treatment conditions. By employing near-ambient pressure scanning tunneling microscopy and Xray photoelectron spectroscopy, we can obtain four different MnO x structures. Among them, double-layer square lattice Mn 3 O 4 (001) and monolayer parallelogram-shaped Mn 3 O 4 are prepared by postannealing Mn−Au surface alloy in "oxygen-poor" and "oxygenrich" regimes, respectively. Annealing the monolayer parallelogram-shaped Mn 3 O 4 in vacuum to 700 K produces a double-layer structure consisting of Mn 3 O 4 top layer and MnO(111) bottom layer, while double-layer MnO(111) is formed after annealing in vacuum to 800 K. Our study lays the foundation for exploring the catalytic properties of inverse manganese oxide/metal model catalysts.

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Section: Introductionmentioning

confidence: 99%

Dynamic Structural Evolution of Mn–Au Alloy and MnO_x Nanostructures on Au(111) under Different Atmospheres

et al. 2021

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“…12 Similar to the FeO(111)/Pt(111) system, FeO/Pd(111) can also promote hydrogenation/dehydrogenation reactions and CO oxidation. 31−33 Such SOMIs have been applied to a variety of oxide/metal inverse catalysts, such as ZnO/Au(111), 34 MgO/ Au(111), MgO/Ag(100), 14 TiO 2 /Au(111), 35 CeO 2 /Cu(111), 36 and CeO 2 /Ru(0001). 37 Among these, Au(111) has always been considered to be an ideal model for the growth of ultrathin FeO films due to its excellent reactivity and stability in the inverse catalysis process.…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Iron Oxide on Au(111): Growth Mechanism and Interfacial Properties

Jiang

Zhou

et al. 2021

J. Phys. Chem. C

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The strong oxide−metal interaction makes inverse oxide−metal configurations more active than conventional bulk systems. An atomic-scale understanding of the growth mechanism and structural properties of these metal oxides on noble metal substrates is essential for the design and improvement of inverse catalysts. Here, using two-dimensional iron oxide (FeO) thin films on the Au( 111) surface as a model system, we investigated the growth mechanism of the first and second layer FeO on Au(111) by highresolution scanning tunneling microscopy. Fe atoms embed in the subsurface of Au(111) at low coverage and squeeze out the surrounding Au atoms. Assisted by oxidation to generate FeO, the islands move to the surface and finally cover the Au(111) surface to form a Moirésuperstructure. Density functional theory calculations reveal the formation of the strong interfacial Fe−Au bonds and remarkable charge transfer. The second layer of FeO exhibits a modulated ellipsoidal Moirépattern because of the strong Fe−Fe bonds along with the variation of interlayer distance at different sites. This study on the growth mechanism and surface structures of mono-and bilayer FeO on Au(111) promotes future research on the metal oxide−substrate interactions in the field of catalysis.

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“…The discovery of free standing single layer graphene in 2004 1,2 has led to the design and synthesis of the new 2D materials with diverse electro-magnetic, thermo-electric, and topological characteristics. [3][4][5][6][7][8] The successfully synthesized 2D materials include, but not limited to, hexagonal Boron nitride (white graphene), [9][10][11] transition metal dichalcogenides (TMDCs) like MoS 2 , and WSe 2 , [12][13][14] ZnO, 15 silicene, 16 germanene, 17 stanene, 18 black phosphorus, 19 and many others are awaiting to be synthesized. The exciting 2D materials like graphene, silicene, stanene, and TMDCs have a myriad of potential applications in optoelectronics, nanoelectronics, and spintronics.…”

Section: Introductionmentioning

confidence: 99%

First principle investigations of the structural, electronic, and phase stability in 2D layered ZnSb

Thapa¹,

Song²,

Dixit³

et al. 2021

Preprint

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Recently, the two dimensional (2D) materials have become a potential candidates for various technological applications in spintronics and optoelectronics soon after the discovery of graphene from the mechanical exfoliation of graphite. In the present study, the structural, electronic, and phase stability of layered quasi-2D ZnSb compounds have been tuned using the first principle calculations based on density functional theory

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Controlled growth of uniform two-dimensional ZnO overlayers on Au(111) and surface hydroxylation

Cited by 37 publications

References 55 publications

Dynamic Structural Evolution of Mn–Au Alloy and MnO_x Nanostructures on Au(111) under Different Atmospheres

Dynamic Structural Evolution of Mn–Au Alloy and MnO_x Nanostructures on Au(111) under Different Atmospheres

Two-Dimensional Iron Oxide on Au(111): Growth Mechanism and Interfacial Properties

First principle investigations of the structural, electronic, and phase stability in 2D layered ZnSb

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Controlled growth of uniform two-dimensional ZnO overlayers on Au(111) and surface hydroxylation

Cited by 37 publications

References 55 publications

Dynamic Structural Evolution of Mn–Au Alloy and MnOx Nanostructures on Au(111) under Different Atmospheres

Dynamic Structural Evolution of Mn–Au Alloy and MnOx Nanostructures on Au(111) under Different Atmospheres

Two-Dimensional Iron Oxide on Au(111): Growth Mechanism and Interfacial Properties

First principle investigations of the structural, electronic, and phase stability in 2D layered ZnSb

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Product

Resources

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Dynamic Structural Evolution of Mn–Au Alloy and MnO_x Nanostructures on Au(111) under Different Atmospheres

Dynamic Structural Evolution of Mn–Au Alloy and MnO_x Nanostructures on Au(111) under Different Atmospheres