3%NaCl溶液中铜缓蚀剂TTA的光电化学和表面电子能谱研究

本文采用测开路光电压（Ｖｏｐｈ）的方法，检测铜在３％ＮａＣｌ溶液中的腐蚀行为及加入缓蚀剂ＴＴＡ的缓蚀效果的浓度效应，并辅之以表面电子能谱进行研究。结果表明当ＴＴＡ浓度小于１．５×１０＾－５ｗｔ％时，反而加速Ｃｌ＾－侵蚀；当ＴＴＡ浓度大于１．５×１０＾－５ｗｔ％时，ＴＴＡ才起到缓蚀作用。随ＴＴＡ浓度继续增加，ＴＴＡ保护膜变得更致密和更厚；当ＴＴＡ浓度大于５×１０＾－５ｗｔ％时，膜厚不再增加。     

BIOTRANSFORMATION OF 2α，5α，10β，14β－TETRA－ACETOXY－4（20），11－TAXADIENE BY THE FUNGIJS CUNNINGHAMELLA ECHINULATA

ＢＩＯＴＲＡＮＳＦＯＲＭＡＴＩＯＮＯＦ２α，５α，１０β，１４β－ＴＥＴＲＡ－ＡＣＥＴＯＸＹ－４（２０），１１－ＴＡＸＡＤＩＥＮＥ　ＢＹ　ＴＨＥ　ＦＵＮＧＩＪＳ　ＣＵＮＮＩＮＧＨＡＭＥＬＬＡ　ＥＣＨＩＮＵＬＡＴＡＳｈａｎｇＨｕｔＨＵ；ＸｕＦａｎｇＴＩ...     

GRAFT COPOLYMERIZATION OF BUTYL ACRYLATE ONTO CASEIN INITIA BY POTASSIUM DIPERIODATOARGENTATE

ＧＲＡＦＴＣＯＰＯＬＹＭＥＲＩＺＡＴＩＯＮＯＦＢＵＴＹＬＡＣＲＹＬＡＴＥＯＮＴＯＣＡＳＥＩＮＩＮＩＴＩＡＢＹＰＯＴＡＳＳＩＵＭＤＩＰＥＲＩＯＤＡＴＯＡＲＧＥＮＴＡＴＥ￥ＷｅｉＨｏｎｇＬＩＵ；ＹｉｕｇＨａｔＬＩＵ；ＹａＪｕａｎＳＨＡＮＧ，ＭｉｎｇＪｕｎ...     

阴离子X~-(F~-、Cl~-、Br~-)对中孔分子筛MCM-41合成与性质的影响

在凝胶体系ＮａＸ（Ｆ、Ｃｌ、Ｂｒ）Ｎａ２ＯＡｌ２Ｏ３ＳｉＯ２ＣＴＡＢ（十六烷基三甲基溴化铵）Ｈ２Ｏ中，研究了水热合成中孔ＭＣＭ４１的合成条件。实验证明，在３９８Ｋ下晶化８～１６ｄ，ＮａＸ／ＳｉＯ２介于０．０１～０．０５时，均可合成出ＭＣＭ４１分子筛；ＮａＦ的加入，可以加快ＭＣＭ４１分子筛的晶化速度；ＮａＢｒ的加入，对形成ＭＣＭ４１分子筛有阻碍作用。采用ＸＲＤ、ＳＥＭ、ＴＧＤＴＡ和Ｎ２吸附对合成样品加以表征，证明合成样品具有介孔分子筛特性。     

PHOTOOXIDATION OF SOME ORGANIC COMPOUNDS CATALYZED BY DECATUNGSTATES

ＰＨＯＴＯＯＸＩＤＡＴＩＯＮ ＯＦ ＳＯＭＥ ＯＲＧＡＮＩＣ ＣＯＭＰＯＵＮＤＳ ＣＡＴＡＬＹＺＥＤ ＢＹ ＤＥＣＡＴＵＮＧＳＴＡＴＥＳ￥ＢｉｎＹＵＥ；ＳｉＳａｎＺＨＵ；ＧａｏＹａｎｇＸＩＥ；ＹｉＤｏｎｇＧＵ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒ...     

SYNTHESIS AND CATALYTIC PROPERTIES OF LAYERED DOUBLE HYDROXIDES PILLARED BY HETEROPOLYOXOMETALATE

ＳＹＮＴＨＥＳＩＳＡＮＤＣＡＴＡＬＹＴＩＣＰＲＯＰＥＲＴＩＥＳＯＦＬＡＹＥＲＥＤＤＯＵＢＬＥＨＹＤＲＯＸＩＤＥＳＰＩＬＬＡＲＥＤＢＹＨＥＴＥＲＯＰＯＬＹＯＸＯＭＥＴＡＬＡＴＥ￥ＺｈｅｎｇＸＵ；ＨｅＭｉｎｇＨＥ；ＤｏｎｇＭｅｉＺＨＯＵ；ＬｉｎｇＳｈｅｎ...     

OXIDATIVE METHYLATION OF TOLUENE WITH METHANE OVER BASIC ZEOLITE CATALYSTS PROMOTED WITH ALKALI METAL OXIDES

ＯＸＩＤＡＴＩＶＥＭＥＴＨＹＬＡＴＩＯＮＯＦＴＯＬＵＥＮＥＷＩＴＨＭＥＴＨＡＮＥＯＶＥＲＢＡＳＩＣＺＥＯＬＩＴＥＣＡＴＡＬＹＳＴＳＰＲＯＭＯＴＥＤＷＩＴＨＡＬＫＡＬＩＭＥＴＡＬＯＸＩＤＥＳ￥ＬｉｎｇＰｉｎｇＺＨＯＵ；ＫｅＹｉＴＡＯ；ＷｅｉＬＩ；Ｍｉｎ...     

水合溴化镧的脱水动力学及与二甲基亚砜配合物的合成和热分析…

合成了水合溴化镧和溴化镧与二甲基亚砜的配合物，经化学分析和红外光谱确定基组成分别为ＬａＢｒ．３７Ｈ２Ｏ和ＬａＢｒ３．７ＤＭＳＯ．应用ＴＧ－ＤＴＡ－ＤＴＧ联用技术研究了水合盐的脱水过程；由ＤＴＡ法测得脱水焓值。依据ＴＧ、ＤＴＡ数据进行了动力学分析。求出了第一、第二阶段脱水反应的活化能并推断出脱水反应机理。用相同的技术研究了ＬａＢｒ３．７ＤＭＳＯ的热分解过程。     

STUDIES OF POLYMER IMMOBILIZED Pd－Cu CLUSTER CATALYSTS PREPARED BY METAL ATOM SYNTHESIS（MVS）

ＳＴＵＤＩＥＳＯＦＰＯＬＹＭＥＲＩＭＭＯＢＩＬＩＺＥＤＰｄ－ＣｕＣＬＵＳＴＥＲＣＡＴＡＬＹＳＴＳＰＲＥＰＡＲＥＤＢＹＭＥＴＡＬＡＴＯＭＳＹＮＴＨＥＳＩＳ（ＭＶＳ）ＳｈｉＨｕａｗｕ；ＣｈａｎｇＹｉｎｇＺＨＵ；ＪｉＬｉａｎｇＺＨＵａｎｄＸｉＳｈｅｎｇＳＨ...     

水合溴化镧的脱水动力学及与二甲基亚砜配合物的合成和热分析研究

合成了水合演化镧和演化镧与二甲基亚砜（ＤＭＳＯ）的配合物，经化学分析和红外光谱确定其组成分别为ＬａＢｒ３．７Ｈ２Ｏ和ＬａＢｒ３·７ＤＭＳＯ。应用ＴＧ－ＤＴＡ－ＤＴＧ联用技术研究了水合盐的脱水过程；由ＤＴＡ法测得脱水焓值。依据ＴＧ、ＤＴＡ数据进行了动力学分析。求出了第一、第二阶段脱水反应的活化能并推断出脱水反应机理。用相同的技术研究了ＬａＢｒ３·７ＤＭＳＯ的热分解过程。     

苯并三氮唑及其衍生物在NaCl溶液中对铜缓蚀作用的表面增强拉曼光谱

铜电极;苯并三氮唑及其衍生物在NaCl溶液中对铜缓蚀作用的表面增强拉曼光谱     

2-十二烷基二硫代-4-苯基-1,3,4-噻二唑-5-硫酮的合成及其对铜的缓蚀性能

合成了2-十二烷基二硫代-4-苯基-1,3,4-噻二唑-5-硫酮(DPTT),用元素分析、IR1、H NMR等技术对化合物进行了结构表征.采用动态旋转挂片法考察了DPTT和苯并三唑(BTA)复配时对铜的缓蚀作用.结果表明,单一DPTT在浓度为3.0 mg/L时缓蚀效果最佳;DPTT与BTA复配使用时显示出较好的协同效应,1.0 mg/L DPTT和1.0 mg/L BTA复配时缓蚀效果最好.     

Investigation of molybdate–benzotriazole surface treatment against copper tarnishing

The synergistic effect of benzotriazole (BTAH) and molybdate on the inhibition of copper tarnish was studied in this paper. The antitarnish treatment of copper was conducted with BTAH solution containing molybdate. The surface morphology observation and composition analysis were investigated by SEM with energy dispersive X‐ray (EDX) spectroscopy. The addition of molybdate improved the protection of BTAH significantly. The BTAH + molybdate treated copper specimen has higher N concentration in its surface. The structure of the protective film was studied by XPS and AES measurements. It was characterized to be a complex of Cu(I)BTA. The antitarnish effect is certified by the formation of the protective Cu(I)BTA film. Molybdate does not participate in the formation of the protective film. The presence of molybdate promotes the passivation of copper. This facilitates the stabilization of the cuprous oxide film, and strengthens the adsorption of BTAH. Copyright © 2008 John Wiley & Sons, Ltd.     

Corrosion inhibition by benzotriazole derivatives and sodium dodecyl sulphate as corrosion inhibitors for copper in ground water at different temperatures

1‐(2‐Pyrrole carbonyl) benzotriazole (PBTA) and 1‐(2‐thienyl carbonyl)‐benzotriazole (TBTA) were synthesized. Different concentrations of PBTA, TBTA, sodium dodecyl sulphate (SDS), and molybdate (Mo) were evaluated as corrosion inhibitors for copper in ground water medium at different temperatures. The obtained results were compared with the effect of benzotriazole (BTA) on the inhibition of copper corrosion at the same condition. The study was performed using potentiodynamic polarization, electrochemical impedance spectroscopy, cyclic voltammetry, and scanning electron microscopy investigations. A good inhibition is ensured at elevated temperatures. All measurements indicated that PBTA, TBTA, and BTA act as good corrosion inhibitors and their inhibition efficiency (IE%) increased with combining them with optimum concentration of SDS and Mo. Furthermore, the best performance was recorded for the compound PBTA + SDS + Mo, which was found to offer increased IE% in a synergistic manner, thereby acting as a good corrosion inhibitor for copper in ground water medium. Copyright © 2015 John Wiley & Sons, Ltd.     

Novel inorganic-organic hybrids constructed from multinuclear copper cluster and Keggin polyanions: from 1D wave-like chain to 2D network

Two novel inorganic-organic hybrids constructed from Keggin-type polyanions and multinuclear copper clusters based on 1-H-1,2,3-benzotriazole (HBTA), [Cu(I)(8)(BTA)(4)(HBTA)(8)(SiMo(12)O(40))]·2H(2)O (1) and [Cu(II)(6)(OH)(4)(BTA)(4)(SiW(12)O(40))(H(2)O)(6)]·6H(2)O (2), have been hydrothermally synthesized and structurally characterized by single crystal X-ray diffraction, elemental analyses, IR spectra and thermogravimetric (TG) analyses. In compound 1, eight Cu(I) ions were linked by twelve HBTA/BTA ligands to form an octanuclear Cu(I) cluster, which is connected by SiMo(12)O(40)(4-) anion with two bridging O atoms and two terminal O atoms to construct a one-dimensional (1D) wave-like chain. The octanuclear copper unit represents the maximum subunit linked just by amine ligands in the POMs system. In 2, four BTA ligands linked five Cu(II) ions constructing a pentanuclear "porphyrin-like" subunit, which is connected by another Cu(II) ion to form a 1D metal-organic band. The SiW(12)O(40)(4-) polyanions as tetradentate inorganic linkages extend the 1D band into a two-dimensional (2D) network with (8(3))(2)(8(5)·10) topology. To the best of our knowledge, compounds 1 and 2 represent the first examples of inorganic-organic hybrids based on metal-HBTA multinuclear subunits and polyoxometalates. The photocatalysis and electrochemical properties have been investigated in this paper.     

复方钨酸盐对铜缓蚀协同作用的光电化学和SERS 研究

主要采用光电化学方法和表面增强拉曼光谱技术对具有环境友好性的钨酸盐与BTA复配使用对铜的缓蚀协同效应和作用机理进行了研究。实验表明Na2WO4对铜的缓蚀作用机理与BTA不同,在电位正向扫描过程中,光电流并不发生转型,其大小变化也不大;但在电位负向扫描过程中产生的阴极光电流峰值明显增大,缓蚀剂浓度越大,光电流越大,缓蚀效果越好,而Na2WO4与BTA复配使用时具有较好的协同效应,光电化学和SERS结果都说明其协同机理为两者都能对铜的缓蚀产生作用,前暑能促使电极表面产生的铜的氧化物增多;后者能与铜(Ⅰ)生成聚合物膜。     

Real‐Time Control of the Enantioselectivity of a Supramolecular Catalyst Allows Selecting the Configuration of Consecutively Formed Stereogenic Centers

The enantiomeric state of a supramolecular copper catalyst can be switched in situ in ca. five seconds. The dynamic property of the catalyst is provided by the non‐covalent nature of the helical assemblies supporting the copper centers. These assemblies are formed by mixing an achiral benzene‐1,3,5‐tricarboxamide (BTA) phosphine ligand (for copper coordination) and both enantiomers of a chiral phosphine‐free BTA co‐monomer (for chirality amplification). The enantioselectivity of the hydrosilylation reaction is fixed by the BTA enantiomer in excess, which can be altered by simple BTA addition. As a result of the complete and fast stereochemical switch, any combination of the enantiomers was obtained during the conversion of a mixture of two substrates.     

The Effect of Magnetic Field on Corrosion Inhibitor of Copper in 0.5 M HCl Solution

Corrosion of metals within magnetic field (MF) had been actively studied for better understanding of the corrosion mechanism when the magnetic sources are presented. However, findings regarding the effect of MF on metals are inconclusive, and there is a lack of studies of MF interaction with various corrosion control techniques, such as corrosion inhibitor. In this paper, the effect of MF on the corrosion of copper in 0.5 M hydrochloric acid (HCl) solution, with or without corrosion inhibitor were studied. Benzotriazole (BTA), a common copper inhibitor, was chosen as the inhibitor for this study. To determine the effect of MF, a MF of 13 mT, generated using a pair of permanent neodymium magnet, was applied during weight loss and electrochemical tests. The results showed that corrosion inhibition efficiency of BTA decreased when it is under an applied MF. A decrease from 47% to 60% in inhibition efficiency had been observed for all samples in an applied MF. By using Tafel extrapolation technique on the polarization curves, it revealed that MF had increased the corrosion current of copper in HCl, causing a decrease in the inhibition efficiency.     

PCB酸性蚀刻液中缓蚀剂对厚铜线路制作的影响

以2-巯基苯并噻唑(2-MBT)、 苯并三氮唑(BTA)和苯氧基乙醇(MSDS)作为缓蚀剂, 研究了其加入在酸性蚀刻液后对PCB厚铜线路的缓蚀效果。通过接触角测试、电化学测试和蚀刻因子得出缓蚀状态,并结合扫描电子显微镜观察铜表面形貌。通过分子动力学计算和量子化学模拟分析缓蚀剂在铜表面的吸附机理。结果表明,2-MBT + MSDS与BTA + MSDS的分子结构可有效地平行吸附在铜表面,且吸附能高于单一缓蚀剂。加入了2-MBT + MSDS的蚀刻液,对厚度约为33 μm铜线路进行刻蚀,铜线路的蚀刻因子提高到6.59,可有效应用于PCB厚铜线路制作。     

A study of FTIR and XPS analysis of alkaline-based cleaning agent for removing Cu-BTA residue on Cu wafer

This study is to focus on the benzotriazole (BTA) residue problem in the postchemical mechanical planarization (post-CMP) cleaning process. The adsorption of BTA on copper surface was studied by analyzing the FTIR spectra; it indicates that the oxidation of the copper surface could affect the adsorption of BTA on the wafer surface. It used an alkaline-based chelating agent, ethylenediamine tetra acetic acid with four equivalents of 3,4-diaminobutane-1,1,2,2-tetraol, to deal with Cu-BTA film, compared with the tetraethyl ammonium hydroxide at the same pH of 10.3, and used X-ray photoelectron spectroscopy (XPS) analysis to characterize the BTA residue on Cu wafer. The results show that the alkaline-based chelating agent is very effective in removing the Cu-BTA from the Cu surface and leaving the cuprous species to passivate the Cu surface.