Electrodeposition of Active Platinum on Stainless Steel

采用低毒、较缓和条件下预处理不锈钢基底 ,在电沉积过程中引入超声波振荡技术 ,并筛选出最佳电流密度组合进行电沉积 ,制备出与基底粘结牢固、析氢电催化性能高的不锈钢镀铂电极。从电极的双层电容值可推出电极活性的改善主要归因于表面粗糙度的增加。The substrate of stainless steel was pretreated under low toxic and moderate conditions. Ultrasonic agitation technology was employed in the process of electodeposition. In addition, the optimal combination of current densities was selected. As a result, platinum plated stainless steel electrode which not only was adherent to the substrate but also possessed excellent electrocatalyticproperty for HER was prepared. It can be deduced from the measured values of the double layer capacity of the electrode that the improvement of the electrode activity was mainly due to the increase in surface roughness of the electrode.厦门大学固体表面物理化学国家重点实验室资助!课题 ( 950 1

Study on Synthesizing of 2_Methylbutanoic Acid by Indirect Electrooxidation

以２＿ 甲基＿１＿ 丁 醇为原料 ，四丁基 硫酸氢铵（ Ｔ Ｂ Ａ Ｓ） 或 四丁 基高 氯酸 铵（ Ｔ Ｂ Ａ Ｐ） 为 相转移催化 剂，在硫 酸酸性 Ｃｒ（ Ⅵ） 氧 化媒质中 氧化合成 ２＿ 甲基丁 酸．由 上述 氧化 过程 生成 的 Ｃｒ（ Ⅲ） 可电解再 生为氧 化媒质 Ｃｒ（ Ⅵ） ，在 最佳工艺 条件下 其产率大 于９５ ％ ．The working conditions of synthesizing 2_methylbutanoic acid by oxidizing 2_methyl_1_butanol with tetrabutylammonium hydrosulfate(TBAS) or tetrabutylammonium perchlorate(TBAP) as phase transfer catalyst in sulfuric acid Cr(Ⅵ) oxidation medium was studied. The Cr(Ⅵ) oxidation medium could be electrolytic regenerated from Cr(Ⅲ), during above oxidation reaction.Under the optinum condition,the yield of 2_methylbutanoic acid is more than 95%.作者联系地址：福建师范大学化学系!福州350007,福建师范大学化学系!福州350007Author's Address: Dept.of Chem.Fujian Teachers'Univ.FuZhou 35000

(Ni-W)-WC复合镀层的研究

研究nI-W合金镀液中添加WC微粒制备(nI-W)-WC复合镀层的电沉积过程,表征镀层的结构和形貌,测试镀层在碱性溶液中的电催化析氢析氧性能,探讨镀层的耐蚀性。结果表明:(nI-W)-WC为晶态复合镀层,析氢析氧性能优越,耐蚀性优良。厦门大学固体表面物理化学国家重点实验室资助课

(Ni-Mo)-WC Composite Electrode and Its Electrocatalytic Properties of Evoluting Hydrogen

在两种不同类型镀液中，用复合电沉积技术制备出（nI-MO）-WC复合电极.研究了其镀层形貌、组成和XPS光电子能谱.用这些电极在7MOl/lkOH溶液中作析氢反应电极，结果表明它们对氢的析出反应具有优良电催化活性.文中还对它们的催化性能进行了评价.This paper reports the electrodepositing (Ni-Mo)-WC composite coatings From two diFFerent electro bath.The shape,compose and XPS of the composite coatings was studied.In alkaline solution the electrocatalytic properties of evoluting hydrogen were investigated.The results show that the composite electrodes were provided with superior electrocatalytic activity.The electrocatalytic perFormances were appraised.厦门大学固体表面物理化学国家重点实验室资

High Active Platinum Plated Titanium Electrode

在电沉积过程中采用超声波振荡技术，选择最佳条件可制备牢固高活性钛镀铂电极．超声波振荡技术改善了镀层与基底的粘结力．电极活性与双层电容有关，并归因于表面粗糙度．To prepare the adherent and high active platinum plated titanium electrode, ultrasonic agitation technology and the best conditions of electrodeposition were adopted. Ultrasonic agitation technology can be improved the cohesion between coatings and substrate. The activity of electrode has related to the double layer Capacity of electrode, which was due to the electrode rugosity.作者联系地址：福建师范大学化学系,厦门大学化学系,固体表面物理化学国家重点实验室Author's Address: Department of Chemistry, Fujian Normal University, Fuzhou 350007 Chen Yanzhen Hu Wenyun State Key Laboratory for Physical Chemistry of the Solid Surface Department of Chemistry, Xiamen University, Xiamen 36100

Codeposition and Corrosion Resistance of Nickel-Cerium-Phosphorus Amorphous Alloys

采用恒电位沉积、循环状安等方法研究了在水溶液中电沉积稀土合金的可能性 ,首次在含有CeCl3的弱酸性NaH2 PO2 镀液中获得了不同铈含量的Ni Ce P合金镀层 ,XPS、AES、XRD和SEM等实验技术表征了镀层的组成和结构 ,极化电阻和腐蚀电位的测试数据表明此镀层与Ni P无定形合金相比 ,具有更强的耐腐蚀能力 ,同时 ,讨论了沉积条件与镀层耐蚀性能的关系 ,结论是 :镀层中铈含量越高 ,其耐腐蚀性能越好 ,此外还对Ni Ce P的共沉积机理进行了初步探讨 ,指出在所研究的电沉积条件下 ,Ni Ce P合金共沉积可以用“诱导共沉积理论”合理解释The possibility of electrodeposition of rare earth alloys from aqueous bath was investigated using varous techniques such as linear potential sweeping, cyclic voltammetry, electrodepositon at constant potential etc. The Ni Ce P alloys with different cerium content were electrodeposited from a weakly acidic solution containing CeCl 3, NaH 2PO 2 and so on the crystal structure and component were characterized by XPS, AES, XRD and SEM observation. The codeposits were found to be more highly corrosion resistent than that of Ni P amorphous alloys by measuring polarization resistance and corrosion potential. The effects of codeposition conditions on the corrosion resistance were discussed. The conclusion is that the codeposition of cerium can signficantly improve corrosion resistance of the Ni Ce P alloys, which increases with increasing the cerium content in the coatings. The codeposition mechanism of Ni Ce P was preliminarily explored; under the existing experimental conditions and based on the results obtained, it is suggested that the codeposition of Ni Ce P is likely to occur by an induced codeposition mechanism.作者联系地址：福建师范大学化学系!福建福州350007,华南师范大学化学系!广东广州510631,华南师范大学化学系!广东广州510631,福建师范大学化学系!福建福州350007Author's Address: 1. Dept. of Chem., Fujian Teachers' Univ., Fuzhou 350007,China; 2. Dept. of Chem., South China Normal Univ., Guangzhou 510631, Chin

A Novel Pt(Ir) Plated Stainless Steel Electrode

应用欠电位沉积与锚定效应，研制了一种新型的不锈钢镀Ｐｔ（Ｉｒ）电极．此电极具有优越的电化学特性，可望用于微传感器．A novel Pt(Ir) plated stainless steel electrode have been developed, to be applied underpotential deposition and anchor effect. The electrode is provided with the excellent electrochemical characteristic, lt is possible to use the matter as micro-sensor.作者联系地址：福建师范大学化学系,福建师范大学实验中心,厦门大学化学系固体表面物理化学国家重点实验Author's Address: Dept. of Chem., Fujian Normal Univ., Fuzhou 35007Zheng XiCentre of Expe., Fujian Normal Univ., Fuzhou 35007Chen Yanzhen Hu Wenyun Dept. of Chem.,State Key Lab. for Phys. Chem. of the

Co WC Composite Elecrode

从钴镀液中添加ＷＣ微粒复合电沉积制备Ｃｏ－ＷＣ镀层，ＷＣ微粒的加入，加快了阴极电化学反应．Ｃｏ－ＷＣ复合电极在碱性溶液中具有优越的电催化析氢性能，并经受了长期间断电解的试验，电极性能稳定Electrodepositing Co WC composite coatings from cobalt electro bath including WC particles was studied. WC particles accelerate the cathode reaction of composie electrodeposition. In alkaline solution the electrocatalytic properties of evoluting hydrogen were investigated. The results show that the properties of electrode remain superior and stable in a long term interval electrolyzing experiment.作者联系地址：福建师范大学化学系,厦门大学固体表面物理化学国家重点实验室Author's Address: Fujian Normal Univ., Fuzhou 350007 Chen Yanzhen Hu wenyun The key lab. for phys. chem. of Xiamen Univ., Chem., Xiamen 36100