Abstract Based on the nanostructured surface model that the (platinum, Pt) nanocones grow out symmetrically from a plane substrate, the local electric field near the conical nanoparticle surface is computed and discussed. On the basis of these results, the adsorbed CO molecules are modelled as dipoles, and three kinds of interactions, i.e. interactions between dipoles and local electric field, between dipoles and dipoles, as well as between dipoles and nanostructured substrate, are taken into account. The spatial configuration of CO molecules adsorbed on the nanocone surface is then given by Monte-Carlo simulation. Our results show that the CO molecules adsorbed on the nanocone surface cause local agglomeration under the action of an external electric field, and this agglomeration becomes more compact with decreasing conical angle, which results in a stronger interaction among molecules. These results serve as a basis for explaining abnormal phenomena such as the abnormal infrared effect (AIRE), which was found when CO molecules were adsorbed on the nanostructured transition-metal surface.
Received: 13 December 2008
Revised: 25 December 2008
Accepted manuscript online:
PACS:
68.43.-h
(Chemisorption/physisorption: adsorbates on surfaces)
Fund: Project supported
by the Natural Science Foundation of Fujian
Province of China (Grant Nos C0710036 and T0750008).
Cite this article:
You Rong-Yi(游荣义) and Huang Xiao-Jing(黄晓菁) Local electric field and configuration of CO molecules adsorbed on a nanostructured surface with nanocones 2009 Chin. Phys. B 18 3970
Formation and photoluminescence properties of boron nanocones Wang Xing-Jun(王兴军), Tian Ji-Fa(田继发), Bao Li-Hong(鲍丽宏), Yang Tian-Zhong(杨天中), Hui Chao(惠超), Liu Fei(刘飞), Shen Cheng-Min(申承民), Xu Ning-Sheng(许宁生), and Gao Hong-Jun(高鸿钧). Chin. Phys. B, 2008, 17(10): 3827-3835.
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
