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Structure and properties of Ni(110) surface coadsorbing chlorine and oxygen

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Science China Chemistry 1996年第5期39卷 553-560页

作者：庄叔贤季明荣吴建新屠兢方文秀俞爽英 Klaus Wandelt Department of Chemical Physics and Structure Research Laboratory University of Science and Technology Institute of Physical Chemistry University of Bonn Wegelerstr. 12 D-53115 Bonn F. R. Germany

The coadsorption of chlorine with oxygen on Ni(110) surface has been investigated by XPS, UPS, AES and work function measurements. The chlorine preadsorption drastically inhibits the further uptake of oxygen. On the contrary, precovered oxygen has hardly any influence on the additional adsorption of chlorine due to the incorporation of precovered oxygen into the subsurface driven by the chlorine coadsorption. ARXPS measurements provide the evidence for this coadsorption model. The thermal desorption of chlorine and oxygen from the coadsorption surface is very similar to that of both individual adsorbates under the same heating conditions, but the desorption temperature of both the adsorbates apparently decreases on the coadsorption surface. The coadsorption and thermodesorption mechanisms are also discussed in detail.

关键词： coadsorption of chlorine with oxygen Ni(110) surface photoelectron spectroscopy.

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Synergistic co-removal of zinc(Ⅱ) and cefazolin by a Fe/amine-modified chitosan composite

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Chinese Chemical Letters 2019年第12期30卷 2196-2200页

作者： Chen Ling Yixuan Zhao Zixi Ren Jiangang Han Changqing Zhu Fu-Qiang Liu College of Biology and the Environment Nanjing Forestry UniversityNanjing 210037China State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China

A novel Fe/amine modified chitosan composite(Fe/N-CS) was facilely synthesized and showed higher affinity to both Zn(Ⅱ) and cefazolin(CEF) than its *** co-adsorption of them by Fe/NCS was observed in varied *** adsorption amount maximally increased by 100.1% for Zn and68.2% for CEF in bi-solute *** initial adsorption rate of Zn(Ⅱ) also improved with *** increasing temperature facilitated *** results of the preloading tests,FTIR/XPS characterizations and DFT calculations suggested that(1) both polyamines and Fe sites participated in the adsorption of Zn(Ⅱ) and CEF,(2) Zn(Ⅱ) could serve as a new efficient site for CEF,forming [amineZn-CEF]/[FeOH-Zn-CEF] ternary complexes,and(3) the co-presence of CEF shielded the electrostatic repulsion between protonated amines and Zn(Ⅱ),contributing to the enhancement of Zn(Ⅱ) ***,the ion strength exerted positive and negative influences on the adsorption of Zn(Ⅱ) and CEF,***,CEF and Zn(Ⅱ) were successively recovered by 0.1 mol/L NaOH followed by2 mmol/L ***/N-CS could be stably reused five *** findings imply that Fe/N-CS is promising for the highly efficient co-removal of concurrent heavy metals and antibiotics.

关键词： coadsorption Heavy metal ions Antibiotics Biomass Bridging effect Polyamine Hydrous ferric oxide

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Effect of deoxycholic acid on performance of dye-sensitized solar cell based on black dye

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Frontiers of Optoelectronics 2011年第1期4卷 80-86页

作者： Quanyou FENG Hong WANG Gang ZHOU Zhong-Sheng WANG Department of Chemistry Laboratory of Advanced Materials Fudan University

The effect of coadsorption with deoxycholic acid（DCA） on the performance of dye-sensitized solar cell（DSSC） based on [（C4H9）4N]3[Ru（Htcterpy）(NCS)3]（tcterpy = 4,4′,4″-tricarboxy-2,2′:6′,2″-terpyridine）, a socalled black dye, had been investigated. Results showed that the coadsorption of DCA with the black dye results in significant improvement in the photocurrent and mild increase in the photovoltage, which leads to an enhancement of overall power conversion efficiency by 9%. The enhancement of photocurrent was attributed to the increased efficiency of charge collection and/or electron injection. The coadsorption with DCA suppressed charge recombination and thus improved open-circuit photovoltage.

关键词： dye-sensitized solar cell (DSSC) coadsorption black dye

Adsorption of Gold on Iridium

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Journal of Applied Mathematics and Physics 2018年第6期6卷 1324-1331页

作者： Khalil Ismaiel Hashim Physics Department Faculty of Science Benghazi University Benghazi Libya

The work described in this paper is a study of gold adsorption on the whole tip surface of iridium field emitter. The study has been carried out using field emission microscope. Changes in electron work function of the iridium substrate which are produced by vapor of deposition of submonolayers of gold in ultra high vacuum have been measured by noting the changes in the slope of Fowler-Nordheim plots. The same procedure for studying the adsorption of copper on iridium?[1] was followed to study the adsorption of gold on iridium. Adsorption of gold was examined on the iridium surface containing the (100) ring which could not be removed thermally.

关键词： Field Emission Microscope Electron Work Function Fowler-Nordheim Plots coadsorption Pulsed Temperature-Field (T-F) Emission Microscopy Low Energy Electron Diffraction (LEED) Auger Electron Spectroscopy (AES) Field Ion Microscopy (FIM)