Adsorbate-Induced Segregation in the Ni{111}/Au/(R,R)-Tartaric Acid System

Timothy E. Jones; Timothy C. Q. Noakes; Paul Bailey; Christopher J. Baddeley

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Adsorbate-Induced Segregation in the Ni{111}/Au/(R,R)-Tartaric Acid System

机译：Ni {111} / Au /（R，R）-酒石酸体系中吸附剂诱导的偏析

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The adsorption of the catalytically important chiral modifier, (R,R)-tartaric acid, was investigated on bimetallic Ni/Au surfaces created by annealing thin Au films on Ni{111}. Reflection adsorption infrared spectroscopy measurements revealed that the adsorption mode of (R,R)-tartaric acid depends very strongly on the surface composition. Deprotonation to produce an adsorbed bitartrate species was achieved only when small Ni clusters became available in the bimetallic surface. Medium-energy ion-scattering studies showed that, once the bitartrate species was able to be produced, significant adsorbate-induced Ni segregation was observed. Scanning tunneling microscopy (STM) investigations suggest that segregation is particularly facile in the proximity of step edges. In addition, STM revealed that the ordered (9 × 9) structure previously reported by Jacobsen et al. is stable even with relatively high concentrations of Ni in the surface layer.

机译：研究了具有重要催化作用的手性改性剂（R，R）-酒石酸在Ni {111}上的Au薄膜退火后形成的双金属Ni / Au表面上的吸附。反射吸附红外光谱法测量表明，（R，R）-酒石酸的吸附模式非常强烈地依赖于表面组成。仅当在双金属表面有小的Ni团簇时，才能实现去质子化以产生吸附的酒石酸氢盐。中能离子散射研究表明，一旦能够产生酒石酸氢盐物种，就会观察到明显的被吸附物诱导的镍偏析。扫描隧道显微镜（STM）研究表明，台阶边缘附近的隔离特别容易。此外，STM揭示了先前由Jacobsen等报道的有序（9×9）结构。即使表面层中的镍含量相对较高，它也是稳定的。

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《The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical》 |2004年第15期|共8页
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Timothy E. Jones; Timothy C. Q. Noakes; Paul Bailey; Christopher J. Baddeley;
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1. Adsorbate-Induced Segregation in the Ni{111}/Au/(R,R)-Tartaric Acid System [J] . Timothy E. Jones, Timothy C. Q. Noakes, Paul Bailey, The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical . 2004,第15期

机译：Ni {111} / Au /（R，R）-酒石酸体系中吸附剂诱导的偏析
2. Adsorbate-Induced Segregation in the Ni{lll}/Au/(R,R)-Tartaric Acid System [J] . Timothy E.Jones, Timothy C.Q.Noakes, Paul Bailey, The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical . 2004,第15期

机译：Ni {III} / Au /（R，R）-酒石酸体系中吸附剂诱导的偏析
3. Adsorbate-Induced Segregation in the Ni{lll}/Au/(R,R)-Tartaric Acid System [J] . Timothy E.Jones, Timothy C.Q.Noakes, Paul Bailey, The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical . 2004,第15期

机译：Ni {III} / Au /（R，R）-酒石酸体系中吸附剂诱导的偏析
4. Bimetallic Alloys in Action: Adsorbate-induced surface segregation and ensemble formation in Pt3Ni and Au4Pd nanoparticles (PPT) [C] . Jonathan E. Mueller AIChE Annual Meeting . 2014

机译：双金属合金的作用：PT3NI和Au4PD纳米粒子（PPT）中吸附诱导的表面偏析和集合形成
5. Stereochemical effects on the organizational and electronic structure of the tartaric acid/silver(111) system. [D] . Santagata, Nancy M. 2009

机译：立体化学对酒石酸/银（111）系统的组织和电子结构的影响。
6. Green Synthesis of Ni@PEDOT and Ni@PEDOT/Au (Core@Shell) Inverse Opals for Simultaneous Detection of Ascorbic Acid Dopamine and Uric Acid [O] . Pei-Sung Hung, Guang-Ren Wang, Wei-An Chung, 2020

机译：Ni @ pedot和Ni @ pedot / au（核心@ shell）逆蛋白的绿色合成用于同时检测抗坏血酸多巴胺和尿酸
7. Gas adsorbate-induced Au atomic segregation and clustering from Cu(Au) [O] . Lifeng Zhang, Zejian Dong, Shuangbao Wang, 2020

机译：气体吸附诱导的Au原子偏析和Cu（Au）的聚类
8. The Scattering of He, Ne, AR, and Xe from the (111) Plane of Ni; Comparison with Ag (111) and au (111) [R] . Smith, J. N., Saltsburg, H., Palmer, R. L. 1968

机译：从Ni的（111）面分散He，Ne，aR和Xe;与ag（111）和au（111）的比较

Adsorbate-Induced Segregation in the Ni{111}/Au/(R,R)-Tartaric Acid System

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