排序方式： 共有69条查询结果，搜索用时 15 毫秒
1.
在硫酸介质中以苯胺为单体,用恒电压电化学方法合成了聚苯胺（PANI）,并对其进行了形貌、红外光谱、紫外-可见光谱、电导率和气敏性能的测定.结果表明：合成的样品为一维纳米线结构,表现出了聚苯胺的光谱特性,电导率为0.53 S/cm,对室内甲醛、苯、甲苯和氨气等表现出了较好的气敏性能,合成方法对电化学方法合成聚苯胺的工业化具有借鉴作用. 相似文献
2.
讨论了随着铜电极在ODT溶液中浸泡时间的增长,成膜铜电极的腐蚀电阻、双电层电容的变化规律.结果表明ODT在铜表面30min内即可自组装形成致密、均匀、稳定的单分子膜. 相似文献
3.
研究了H2TBP，H2TP（o-NO2)TBP的Sn(Ⅳ）和Mn(Ⅲ)配合物的电化学性质，并用Nicholson方法测这了上述配合物的非均相电子传递速率常数。 相似文献
4.
采用共混法制备了多壁碳纳米管苯胺复合材料(MWCNT—ANCTC),通过红外光谱分析了该复合材料的可能反应机理;本文还对该复合材料的荧光性质进行了测定,并对影响其荧光强度的因素及原因进行了讨论.另外发现该复合材料膜能促进电子的转移,对Cu2 有特殊的响应,这将使得该复合材料在Cu2 的定性定量检测领域有很好的应用前景和价值. 相似文献
5.
任谦 《牡丹江教育学院学报》2005,(1):66-67
热力学中Gibbs-Helmholts方程,简称G-H方程(△G=△H-T△S)与化学过程的△G=-nEF相结合得出原电池G-H方程:△H=-nEF+nFT(ET)p.其作用体现在:通过简易、准确的电化学测量方法获得若干可靠的热力学函数的变量,但是,该方程的应用具有条件性,该条件可以从G-H方程的热力学推导过程中获得。 相似文献
6.
叙述了蛋白质、酶等生物大分子在室温离子液体中的基本性质，重点介绍了它们在室温离子液体中的电化学研究进展。 相似文献
7.
血红素蛋白质在甲基纤维素膜中的电化学研究 总被引：3，自引：0，他引：3
李业梅 《郧阳师范高等专科学校学报》2003,23(3):33-36,38
利用甲基纤维素(MC)水凝胶将肌红蛋白(Mb)、血红蛋白(Hb)、辣根过氧化物酶（HRP,)和过氧化氢酶(Cat)四种血红素蛋白质固定在裂解石墨电极表面，形成稳定的血红素蛋白质-MC膜修饰电极，在MC膜中，Mb、Hb、HRP和Cat直接与电极之间传递电子，四种血红素蛋白质的式电势都随溶液pH的增加而负移且呈线性关系，表明电子传递过程伴随着质子转移，这种氧化还原玻尔效应反应了蛋白质结构与功能的关系。 相似文献
8.
A Conceptual Change Teaching Strategy to Facilitate High School Students' Understanding of Electrochemistry 总被引：1，自引：0，他引：1
Recent research in chemistry education has shown an increasing interest in the facilitation of conceptual change in student understanding of chemical concepts. Most of the studies have tried to show the difference in student performance on algorithmic and conceptual problems. The objective of this study is to go beyond and design a teaching strategy based on two teaching experiments that could facilitate students' conceptual understanding of electrochemistry. The study is based on two sections (control, n = 29; experimental, n = 28) of 10th grade high school students at a public school in Venezuela. Experimental group participated in two teaching experiments designed to generate situations/experiences in which students are forced to grapple with alternative responses leading to cognitive conflicts/contradictions. Results obtained show that learning electrochemistry involves both algorithmic and conceptual problems. On Posttest 1, 93% of the experimental group students responded correctly, in contrast to 39% of the control group. On Posttest 2, 39% of the experimental group responded correctly, in contrast to 0% of the Control group. The difference in performance on both posttests is statistically significant (p < 0.001). It is concluded that the teaching experiments facilitated students' understanding (progressive transitions) of electrochemistry. 相似文献
9.
金属La部分取代MI（混合稀土）的贮氢合金电极Ml0.8La0.2Ni4.0Mn0.4Co0.4Al0.1（A）容易活化，其充电效率、放电容量、快速放电能力以及荷电保持能力比电极MlNi4.0Mn0.4Co0.4Al0.1（B）分别提高5．5％、7．0％、4．0％和8．2％。电极A放电过电位比电极增大，且循环稳定性下降。 相似文献
10.
The electrodeposition and electrochemical behaviors of rare earths in different ionic liquids are summarized. It is demonstrated that most of the rare earths can be electrodeposited in ionic liquids except cerium. Anion of ionic liquids appears to play a significant role in determining the electrochemical windows, and then deciding whether the corresponding ionic liquids can be used for rare earths electrodeposition. The electrochemical behaviors of the reduction process in ionic liquids are similar to those in high-temperature molten salts. The reduction of RE（III） to RE（II） has different reversibility, but the reaction of rare earths to their zerovalent state is irreversible. 相似文献