共查询到20条相似文献，搜索用时 421 毫秒
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采用电化学方法首次在导电基体玻碳电极上研制出磷钼杂多酸-聚吡咯薄膜修饰电极，其制备过程简便、快速，膜电极性能稳定、经久耐用；对膜电极的电化学性能进行了表征；探讨了电解质溶液、溶剂、pH值、扫速等因素对膜修饰电极伏安行为的影响；研究了膜修饰电极对氯酸根、漠酸根、碘酸根、三价铁离子、亚硝酸根、过氧化氢等物质的电催化还原作用． 相似文献
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通过电导率、循环伏安法和紫外吸收可见光谱法对由N，N-二乙基二硫代甲酸根（简称dtc）与稀土元素钛、过渡元素钼形成的八配位离子对配合物进行了表征，同时用薄层光谱电化学法对其电极过程的电化学特性进行了进一步的研究． 相似文献
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杨水金 《商丘师范学院学报》1994,(Z2)
本工作合成了一系列混合碱土金属钨酸盐，用粉末Ｘ射线衍射和电子衍射法表征了其晶体结构，并对钨酸钙钡单晶进行了Ｘ射线能谱成份分析．所合成的化合物均属四方晶系，Ｉ４１／ａ空间群．钙和锶，锶和钡的钨酸盐能以任意比例互溶，而钙和钡的钨酸盐则以两相存在，并探讨了碱土金属钨酸盐溶混性的成因 相似文献
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采用正交设计等实验设计方法研究Cr12MoV模具钢的电化学特性．利用Tafel曲线等常用电化学分析方法分析和讨论Cr12MoV模具钢的腐蚀速度和钝化等电化学腐蚀特性，为Cr12MoV模具钢耐蚀性的进一步研究打下一定的基础．高电位阳极极化曲线发现Cr12MoV模具钢在硫酸腐蚀介质中，当腐蚀电位处于30-35V之间时有一个稳态腐蚀区，在这个区域内进行抛光时电流相对稳定，可以获得比较理想的抛光效果． 相似文献
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王升富 《黄冈师范学院学报》1995,(3)
采用电化学方法首次在导电基体玻碳电极上研制出磷钼杂多酸－聚吡咯薄膜修饰电极，其制备过程简便、快速，膜电极性能稳定、经久耐用；对膜电极的电化学性能进行了表征；探讨了电解质溶液、溶剂、pH值、扫速等因素对膜修饰电极伏安行为的影响；研究了膜修饰电极对氨酸根、溴酸根、碘酸根、三价铁离子、亚硝酸根、过氧化氢等物质的电催化还原作用． 相似文献
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聚吡咯的制备及其电化学行为分析 总被引：1，自引：0，他引：1
建立了聚吡咯（ppy)的电化学制备方法，研究了阳离子对薄膜性质的影响，介绍了电极电位对薄膜中Li^ 含量的影响，在0.8V(vs.SCE)时电解各的乙腈溶液，可在Pt片电极表面获得聚吡咯薄膜，金属离子在薄膜上可以发生嵌入和脱嵌现象，在电极电位为－0.8V时，Li^ 的嵌入量最大，探讨了阴离子对薄膜的电化学行为的影响。 相似文献
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陈远强 《福建工程学院学报》2013,11(3)
采用化学聚合和电化学聚合两步法制作聚吡咯铝电解电容器,研究了电化学聚合电量对聚吡咯的微观形貌及聚吡咯铝电解电容器的电容量和等效串联电阻的影响.结果表明:随着电化学聚合电量增加,电容器的电容量增大,等效串联电阻减小.在聚合电量为0.54C时电容器的电性能最好,其电容量最大为18.4 μF、Res最小为26.7 mΩ.并且在此聚合条件下制备的聚吡咯致密性高,颗粒大小均匀程度高. 相似文献
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电化学是历年高考的重要考点，分析2007年各地高考试题不难发现，电化学类试题在试卷中所占比重相对稳定，每一份试题中都有1～2道电化学类试题．现将2007年高考电化学试题分类如下．[第一段] 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
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RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献
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Rajesh Kanoi 《海外英语》2007,(1):52
Today, Sunday morning, I sit thinking and typing at my computer. My thoughts are in my homeland, India and my body is in China. The body is here and mind there for a good reason. Mr. Hu is president and I am resident and both are in each other's countries (what a difference the absence of one small letter makes!). Mr. Hu will return in a few days and I will stay on longer. 相似文献
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正A One day a pig went to the stable(马棚)to see his good friend,an oldhorse,and was going to stay there forthenight.Night came and it was time forsleep.The pig went into the straw heap(稻草堆)and lay comfortably.A longtime passed,but the horse was stillstanding there and did not move.Thepig asked the horse why he did not go tosleep."Standing like this is the begin-ning ofsleeping,"answered the horse. 相似文献
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《今日中学生》2014,(9)
正1.Any fool can count the seeds in an apple.Only God can count all the apples in one seed.2.Happy families are all alike;every unhappy family is unhappy in its own way.3.Memories are the key not to the past,but to the future.4.Sometimes in the dark you see what you want to see.5.There is a great difference between 相似文献
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《重庆大学学报(英文版)》2014,(2)
正Scope and Policy The Journal of Chongqing University-English Edition(JCQU-E)is a peerreviewed journal publishing research articles in multiple disciplines of science and technology,covering civil and environmental engineering,chemical engineering,biotechnology,mechanical and electrical engineering,computer and data processing,mining,metallurgy,materials science,and interdisciplines thereof. 相似文献