Preparation of atomically dispersed Cu species on a TiO2 (110) surface premodified with an organic compound

Chun, Wang‐Jae; Koike, Yuichiro; Ijima, Kaoru; Fujikawa, Keisuke; Ashima, Hidenori; Nomura, Masaharu; Iwasawa, Yasuhiro; Asakura, Kiyotaka

doi:10.1016/j.cplett.2006.11.080

Cited by 29 publications

(27 citation statements)

References 33 publications

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“…TCA was deposited on the Au surface as reported previously. 13 PTRF-XAFS experiments were carried out at BL9A 75 of the Photon Factory at the Institute of Material Structure Science (KEK-IMSS-PF). X-rays were monochromatized with a Si (111) double-crystal and focused using a pair of bent conical mirrors.…”

Section: Methodsmentioning

confidence: 99%

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Preparation and structure of a single Au atom on the TiO2(110) surface: control of the Au–metal oxide surface interaction

et al. 2013

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Section: Methodsmentioning

confidence: 99%

“…We used thiophene carboxylic acid (TCA) to modify the surface. 13 Because the carboxylic acid stably adsorbed on the restricted by the presence of acetate B and/or the oxygen defect. Finally, the Cu atoms were trapped by the nearby acetate and became fixed on the surface through bonds with two oxygen atoms: the acetate B carbonyl and the bridging oxygen atoms.…”

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Preparation and structure of a single Au atom on the TiO2(110) surface: control of the Au–metal oxide surface interaction

et al. 2013

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“…This suggests that two bonds are necessary to stabilize the atomically dispersed Ni species. This is demonstrated by Cu species deposited on a thiophene carbonic acid-modified TiO 2 (110) surface, where monoatomically dispersed Cu is stabilized on the surface by two covalent bonds of Cu-O and Cu-S, 30) while Cu is easily aggregated otherwise. Atomically dispersed Ni is scarcely obtained on this surface because no stable adsorption site exists on the terrace site and the number of step edges is small.…”

Section: Ni On Tio 2 (110)mentioning

confidence: 99%

What is the Interaction between Atomically Dispersed Ni and Oxide Surfaces?

et al. 2009

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Metal-oxide surface interaction is important in catalysis. We have studied Ni on TiO 2 (110) and Al 2 O 3 (0001) by means of polarizationdependent total-reflection fluorescence extended X-ray absorption fine structure (PTRF-EXAFS) observations to elucidate the origin of metaloxide interactions. Ni atoms interact with the dangling bond of the oxygen atoms. The Ni atoms are positively charged and bonded with more than two oxygen atoms.

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“…Spatial dispersion of a noble metal, in this case Cu, on TiO2(110) was recently demonstrated by Chun et al 19) These authors used an organic, 3-thiophene carboxylic acid (TCA), to effectively disperse Cu.…”

Section: )mentioning

confidence: 99%

“…The International Workshop on Oxide Surfaces (IWOX) series continues to be a leading forum for the presentation and dissemination of new research in the field. IWOX-VI will be held January [18][19][20][21][22][23]2009 …”

Section: ．Summarymentioning

confidence: 99%

Advances in the Surface Science of TiO2-A Global Perspective-

Chambers

2007

Journal of The Surface Science Society of Japan

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TiO2 rutile single-crystal surfaces have served as useful prototypical, well-defined specimens for fundamental investigations of oxide surface science for many years. As a result of both experimental and theoretical efforts, we have gained considerable insight into the structural, electronic, thermochemical and photochemical properties of pristine as well as defective surfaces. In this brief review, I summarize some of the recent advances that have been made in the laboratories of participants of the International Workshop on Oxide Surfaces (IWOX) series, principally on TiO2(110).KEYWORDS : TiO2, surface defects, adsorbates, epitaxial films, metal overlayers 1．IntroductionThe surface science of metal oxides has experienced explosive growth over the past 15 years as research groups from every continent have gotten involved. Metal oxides represent a very important class of materials. Oxides are unique in the breadth of their properties. This range of properties results not only in fascinating fundamental science issues, but also in potential importance for current and future technologies. No other class of materials exhibits such a wide range of behavior : band gaps spanning the visible and UV ; electronic properties ranging from superconducting to metallic to semiconducting to insulating ; magnetic properties ranging from ferromagnetic to antiferromagnetic ; and dielectric properties ranging from low-k to ferroelectric and piezoelectric. The technologies of the 21st century will require new materials systems encompassing these properties that are fabricated with a high degree of control. For example, it is clear that UV-based optoelectronics, magnetic tunnel junction, ferroelectric and resistive nonvolatile memory, spintronic devices, and highly effective photocatalytic materials will be of great importance in information, medical, and environmental applications. The rich optical, electronic, magnetic and surface chemical behavior of metal oxides, along with superior chemical and thermal stabilities, uniquely suit these materials for a number of applications for which conventional semiconductors cannot be used. The richness in properties of metal oxides is derived from the inherent chemical and physical complexities of these materials. These complexities include multiple charge states, complex phase diagrams, and vastly different properties among isostructural oxides.The surfaces of oxides are of paramount importance because surfaces determine how these materials interact with the outside world, and are key to forming interfaces with other materials. Oxide surface and interface properties are critical in determining thermal and photochemical response, as well as interface formation to metals, semiconductors, and other oxides. Technological applications are numerous, and include such diverse areas as self cleaning glass, dye sensitization for light harvesting, field effect transistor operation, light emitting diodes for solid state lighting, magnetic exchange bias in magnetoresistive random access memory, and ther...

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Preparation of atomically dispersed Cu species on a TiO2 (110) surface premodified with an organic compound

Abstract: (pictogram)On a bare TiO 2 (110) surface Cu easily aggregates to Cu particles by vacuum evaporation while on the TiO 2 (110) surface premodified with 3-thiophene carboxylic acid provide monoatomically dispersed Cu species which will lead to small nanocluster with less than 1 nm in size.

Cited by 29 publications

References 33 publications

Preparation and structure of a single Au atom on the TiO2(110) surface: control of the Au–metal oxide surface interaction

Preparation and structure of a single Au atom on the TiO2(110) surface: control of the Au–metal oxide surface interaction

What is the Interaction between Atomically Dispersed Ni and Oxide Surfaces?

Advances in the Surface Science of TiO2-A Global Perspective-

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