《电化学方法》

作者联系地址：上海师范大学化学

In Situ Raman Spectroelectrochemical Characterization of the Prussian Blue/Platinum Modified Electrode

采用现场拉曼光谱电化学技术表征了普鲁士蓝膜修饰铂电极的循环伏安过程 .结果显示 ,随着修饰膜的微观结构由普鲁士蓝向普鲁士白或相反过程转化 ,表征两种不同结构的拉曼特征振动谱峰及其强度变化呈现出明显的可逆特征 .Prussian Blue is known to be deposited electrochemically on the electrode surface, producing a dense redox active layer. Since the Prussian Blue modified electrode was first reported by Neff in 1978 [1] , different in situ spectroelectrochemical techniques have been widely used to investigate its electrochemical mechanism [2～4] . But no research work related to the in situ Raman spectroscopic studies on it has been reported. In this paper we try to characterize the nature of thin Prussian Blue films on platinum substrates with in situ Raman spectroelectrochemical technique. A Super LABRAM confocal microscopic Raman spectrometer (Dilor) with a He?Ne laser (632.8 nm) and CHI604A electrochemical Analyzer (USA) were used here. Cyclic voltammetry was used to prepare Prussian Blue film modified platinum electrode. The platinum electrode potential was cycled at a scan rate of 50 mV/s between 0 and 0.5 V (vs. SCE). As shown in figure1, the in situ Raman spectra obtained here characterized two cycles of voltammetric process of the Prussian Blue modified platinum electrode in a potassium chloride solution (1 mol/L) between 0.5 V and -0.1 V (vs.SCE) with a scan rate 1 mV/s. The observed spectra demonstrated the change of intensities and shifts of those characteristic Raman frequencies related to the coordination structures of Prussian Blue and its reduced form, Prussian White. From these spectra, intensity changes of those related characteristic Raman lines characterized the stability and reversibility of the Prussian Blue film obviously. As shown in Fig.2(a), at the beginning of the process, the characteristic Raman frequencies of Prussian Blue remarkably appeared at 2 089 cm -1 , 2 123 cm -1 and 2 154 cm -1 . When the scanning potential arrived at the range 0.20～0.15 V, which is somewhat lower than the reduction potential of Prussian Blue film modified platinum electrode, three peaks can be observed at 2 058 cm -1 , 2 109 cm -1 and 2 140 cm -1 respectively [Fig. 2(b)]. Finally, as shown in Fig. 2(c), at the potential range of -0.10～-0.05 V, characteristic peaks are located at about 2 048 cm -1 , 2 095 cm -1 and 2 130 cm -1 . At this moment, intensities of these peaks decreased to their minimum. These Raman frequencies should be related to the reduced state of Prussian Blue, i.e. Prussian White. Subsequently, with the potential scanning inversely, the intensities and shifts of these characteristic Raman lines changed reversibly.作者联系地址：上海师范大学化学系!上海200234,上海师范大学化学系!上海200234,上海师范大学化学系!上海200234,上海师范大学化学系!上海200234Author's Address: Dept. of Chem., Shanghai Teachers Univ., Shanghai 200234,Chin

Raman Spectroelectrochemical Study on Bioactive Molecules

本文概述了采用电化学现场拉曼光谱技术研究氧化物歧化酶在L 半胱氨酸修饰金电极表面的电子迁移反应以及腺嘌呤共存条件下超氧化物歧化酶在金电极表面的电子迁移反应和不同电位下银电极表面烟酰胺腺嘌呤二核苷酸的吸附等体系的反应吸附特性 .所得结果对于分析和研究生物活性分子电化学过程机理具有重要意义 .Electron?transfer reaction is known to be one of the key reactions for generating biological functions. Mechanism revelation at a molecular level of such kind reactions is to be very helpful for us to understand life essence. In fact, surface enhanced Raman scattering (SERS) is one of the most powerful tools for the study on metal?electrolyte and metal?vacuum interfaces since 1970's. Moreover, Raman spectroscopic study in enzymology has provided attractive results during last twenty?five years. For the study of electron?transfer reaction mechanism of some oxidoreductases and SERS of some other biological macromolecules, an electrochemical in situ Raman spectroscopic technique was established in author's lab and some research works have been done on it in the past two years. A brief review of these works is given in this paper. The electrochemical in situ Raman spectroscopic measurements were carried out using a Super LABRAM Raman spectrometer (Dilor, France) coupled with a CHI604A Electrochemical Analyzer (CH Instr., USA). A Teflon spectroelectrochemical cell with a quartz plate window was designed for the in situ measurements. The working electrode was pretreated with oxidation?reduction cycles for each measurement. The electrolyte solutions were purged with nitrogen prior to all measurements, and all the measurements were carried out under the nitrogen atmosphere. Copper, zinc superoxide dismutase (SOD) is an important oxidoreductase for organism metabolism. The established spectroelectrochemical technique was first used to characterize the cyclic voltammetric process of SOD at L?cysteine modified gold electrode as well as the process of electrochemical modification of L?cysteine molecules on a gold electrode. The obtained Raman spectra reveal that the L?cysteine modified gold electrode improves effectively the reversibility of electron?transfer reactions of SOD. Besides L?cysteine molecules, it was interesting that adenine was also an effective electron?transfer promoter for SOD at gold electrode. A strong peak at 355 cm -1 can be observed in the Raman spectrum of adenine molecules adsorbed on gold electrode. It was inferred that the peak maybe related to the chemical interaction between adenine molecules adsorbed and gold electrode surface. As shown in Fig.1, for the mixture of SOD and adenine at gold electrode under a polarization potential 55 mV (vs. SCE), both the characteristic Raman lines of SOD and adenine molecules appeared. Therefore it was reasonable to conclude that SOD and adenine molecules should be co?adsorbed on gold electrode surface under such a potential, which is slightly lower than the reduction peak potential of SOD on adenine?modified gold electrode. Moreover, two new peaks appeared remarkably at 445 cm -1 and 610 cm -1 are likely to be related to the active site of SOD. It suggests that the co?adsorption mechanism of SOD and adenine molecules on the gold electrode surface results in effective approaching of the active site of SOD to the electrode surface.作者联系地址：上海师范大学化学系!上海200234,上海师范大学化学系!上海200234,上海师范大学化学系!上海200234,上海师范大学化学系!上海200234,上海师范大学化学系!上海200234,上海师范大学化学系!上海200234Author's Address: Dept. of Chem., Shanghai Teachers Univ., Shanghai 200234,Chin

Chemistry: Our Life, Our Future--Celebrate the International year of Chemistry, 2011

<编者按> 在联合国教科文组织和国际纯粹与应用化学会的联合推动下,联合国大会全体会议在2008年12月19日通过决议,将2011年确定为国际化学年,作为实施联合国可持续发展教育计划(2005～2014)的重要措施.中国科学院、中国科学技术协会及中国化学会积极响应并参与组织推动2011年国际化学年在中国的各项活动.为了帮助广大读者了解国际化学年的目标和意义,本刊将分别约请专家学者撰文庆祝国际化学年.本期刊登章宗穰教授大作,文中较详尽地介绍了2011年国际化学年的由来、目标和全球所面临的严峻挑战以及化学工作者的责任.从下期起将陆续刊登电化学各领域科技工作者有关庆祝国际化学年的文章.欢迎读者、作者踊跃参与,惠投佳文.热切希望广大读者积极参与国际化学年的各项活动.作者联系地址：上海师范大学化学

Book Review

作者联系地址：上海师范大学化学系Author's Address: Shanghai Normal University通讯作者E-mail：[email protected]

Collecting Our Wisdom and Working Together, Making the Journal Go Further ---On the 20 Years Anniversary of the Journal of Electrochemistry

2015年春，由中国化学会主办的电化学委员会会刊《电化学》迎来了期刊的第21卷. 创刊20年来，期刊从季刊发展为双月刊，版面也从小16开扩大到大16开. 20年间，期刊共出版86期，合计发表了各类文章近1800篇（据“中国知网”统计数据），其中包括国内外作者投寄的142篇英文稿件. 《电化学》期刊已成为融基础研究与技术应用于一体的电化学专业学术期刊. 编辑部通过电子邮件向1100多位国内外读者及时发送每一期新出版期刊的图示目录（E-mail Alert）. 期刊网站及中国知网也已成为电化学科技人员阅读本刊论文的重要途径. 近五年来，读者通过本刊网站下载论文数累计超过90万篇次，平均每篇论文的下载数高于500次，每天下载的平均数也超过600篇次，下载量最多的单篇论文已高达9400多次. 据统计，下载论文者不限于国内读者，其中还包括近5%的境外读者. 上述统计数字表明，《电化学》期刊已成为中国电化学科技人员进行学术交流的重要园地，展示了我国电化学领域的最新研究成果及实时动态，也是国际同行了解中国电化学发展的主要窗口.On celebrating the 20 years anniversary of the founding of Journal of Electrochemistry (China), the author wishes to make a brief record of its historical events during the past years, and also to pay respect to the entire person who contributed a lot for the development of the journal. Some personal ideas related to the future development of the journal are proposed too.作者联系地址：上海师范大学化学系，上海 200234Author's Address: Department of Chemistry, Shanghai Normal University, Shanghai 200134, Chin

Electrolytes for Lithium and Lithium-Ion Batteries

2014年秋，Springer出版社刊印了《Modern Aspects of Electrochemistry》系列丛书的第58卷，书名为《Electrolytes for Lithium and Lithium-Ion Batteries》（锂电池和锂离子电池中的电解质）. 该书由美国军队研究实验室（U.S. Army Research Laboratory）的三位科学家T. Richard Jow, Kang Xu, Oleg Borodin 及日本三菱化学株式会社（Mitsubishi Chemical Corporation）的Makoto Ue 共同担任本卷编辑. 知名电化学家J. O’M. Bockris和B. E. Conway在上世纪50年代初共同主编了《Modern Aspects of Electrochemistry》的第一卷，并由美国学术出版社（Academic Press）于1954年出版. 2006年之后，Bockris和 Conway二位先驱因年事已高而不再参与丛书编辑工作. 目前的丛书主编为R. E. White和C. G. Vayenas. 《锂电池和锂离子电池中的电解质》一书对锂电池和锂离子电池中所使用的电解质的种类、特性及所涉及的研究方法和理论问题进行了详尽的讨论，不仅引述了相关领域的近几年重要文献，还对此进行了有独特见地的评述，颇有参考价值. 近年来所出版的与锂电池及锂离子电池相关的中英文书籍种类繁多，但专门论述电池中所用电解质的书籍却极为少见. 特此向本刊读者推荐和作一简略评介.This is an up-to-date book published by Springer last year and focuses on the field of the electrolytes for lithium and lithium-ion batteries. A brief introduction and review of this book are given in this paper. The main contents of this book are introduced briefly in the order of ten different chapters along with a short review of recent progress in those fields.作者联系地址：上海师范大学化学系，上海200234Author's Address: Department of Chemistry, Shanghai Normal University, Shanghai 200234通讯作者E-mail：[email protected]

《可植入神经修复器件》两卷集简介

作者联系地址：上海师范大学化学系,上海20023

Study on the Electrochemical Behaviors of Prussian Blue Film Using Electrochemical Quartz Crystal Microbalance

　应用循环伏安法于铂电极上电化学沉积PB膜,并由电化学石英晶体微天平技术(EQCM)原位测量了PB膜电沉积过程的频率响应.研究表明,沉积液中添加邻菲咯啉对PB膜结构有影响.有邻菲咯啉参与沉积的PB Pt/QCM电极对H2O2的电催化还原性能优于不含邻菲咯啉沉积液制备的PB Pt/QCM电极.Prussian blue (PB) films were electrodeposited on the Pt/QCMelectrodes in the solutions with or without Phenanthroline by cyclic voltammetry. The frequencyshift during electrodeposition wasmeasured,and the EQCM behaviors of these two types of PB films in potassium chloridewere also studied. Results show that electrodeposition process of PB film in the solution with phenanthroline wasdifferent from that in the solution without phenanthroline. The PB film modified Pt/QCMelectrodeprepared in the solution with phenanthroline shown an excellent electrocatalytic activity for the reduction process of hydrogen peroxide.作者联系地址：上海师范大学化学系电化学研究室,上海师范大学化学系电化学研究室,上海师范大学化学系电化学研究室 上海200234 ,上海200234 ,上海200234Author's Address: Department Of Chemistry,Shanghai Normal University,Shanghai 200234,Chin