查询词典 electrode potential

In order to improve the electro-catalytic activity of platinum based catalyst to methanol oxidation, in this thesis, firstly prepare heteropoly acid modified Pt/GC electrode with different concentration by cyclic voltammetry method, and then test the cyclic voltammetry curves individually in vitriolic and methanol solution. The study shows the best concentration for both phosphomolybdic acid and phosphotungstic acid is 1×10~(-3)mol/L. And find the more heteropoly acid modified on electrode, the lower peak-up potential towards methanol because of the existence of oxygenous species.

为了改善铂基催化剂氧化甲醇的催化活性，本论文首先通过循环伏安扫描法制备了不同浓度磷钼酸和磷钨酸修饰的Pt/GC电极，通过研究Pt/GC电极在修饰前后在硫酸溶液中及含甲醇的硫酸溶液中的循环伏安行为发现，磷钼酸和磷钨酸均能在PtRu/C电极上发生氧化还原反应，而且杂多酸修饰浓度对Pt/GC电极氧化甲醇的催化活性有很大影响。

Experiment shows that for coated wire calcium ion-selective electrodes with copper matrix,there is a linear dependence of the electrode potential on logarithm calcium ion activities over a range of 10'(-1)-2x10~(-5) mol/L,the limit of detection is 8x10~(-6) mol/L,the electrode pote...

结果表明，铜基涂丝钙离子选择电极线性范围为10~(-1)-2×10~(-5) mol/LCa~(2+)，检测极限达8×10~(-6) mol/L，斜率为30±2mV，适用 pH 范围为4。 5-11。 0，响应时间少于15s，内阻低，选择性和稳定性好，使用寿命一般为三个月左右，并成功的用于水质分析及钙离子的有关络合物稳定常数的测定。

In the second part, potential-modulated electroreflectance spectroscopy was employed to investigate the electrochemical behaviors of electroactive species on the electrode surface.Redox behaviors of heptylviologen was studied by using ER at a silver electrode. The reoxidation behavior of heptylviologen cation radical deposited film was investigated by dc, ac and ER voltammograms.

本文用ER研究了银电极上heptylviologen的氧还行为，用直流、交流和ER伏安法研究了heptylviologen 阳离子基沉积膜的重新氧化行为，并用ER光谱和ER伏安法研究了heptylviologen阳离子基在沉积膜中的存在方式。

However, the highly conductive electrode material on the surface of the body coerces the contact surface underneath the electrode to be changed into an equal potential This reduces the current density at the interior of the body and affects the distribution of the sens ing field.

但是，导电材料的电极将其下的被测生物体表面强制为等电势，从而降低生物体内的电流分布密度，影响场域内部的电场分布。

Measured positive and negative electrode potential must rely on the reference electrode, to determine its relative value.

前言 Foreword 测量正、负极电极电位要借助参比电极，来确定其相对值。

In this paper ,the anodic differential pulse voltammetry has been applied to the research of the electrochemical behaviour of biotin,with gold electrode as working electrode.In solution of HAc NaAc(pH 3.59),the peak potential of biotin is 0.46V.The calibration curve is linear over the concentration range of 1.0×10 -6 ～2 0×10 -5 mol/L.

用微分脉冲阳极伏安法研究了生物素的电化学行为，用金电极作工作电极，在pH3.59的HAc－NaAc介质中，生物素的峰电位为0.46V，生物素浓度在1.0×10－6～2.0×10－5mol／L范围内与峰高呈线性关系。

There are some methods used commonly to immobilize POM on electrode surface, for example, electrodeposition of POMs on the electrode surface from a polyoxometalates solution under constant potential, self-assembly and layer-by-layer deposition, entrapment POM into polymers matrics and sol-gel method. There are some drawbacks using above methods.

杂多酸化学修饰电极主要有以下几个方法：恒电势下，多酸阴离子在电极表面的电沉积；多酸阴离子在电极表面的自吸附；聚电解质和多酸阴离子在电极表面的交替沉积；把多金属氧酸盐包埋在各种聚合物中；溶胶－凝胶法。

When the redox electrode is immersed in a solution containing a reversible chemical reaction system, a migration of electrons is established between the electrode and the system. This electron flow can be construed as an exchange current density and is of paramount importance for accurate, fast and reproducible redox potential measurement.

当氧化还原电极浸入具有逆转化学反应系统的溶液中时，会有电子在电极与溶液间移动，这些电子的流动被转绎成交换电流密度，这是准确性高，快速和再现性佳的 ORP测量技术最重要的参数。

The film electrode shows a Nernst potential response for pH3—12 and electrode coefficient 57mV/pH.

该膜电极在pH3～12范围内对pH呈Nernst响应，电极系数为57mV/pH，对Li~+，Na~+，K~+三种离子具有较高的抗干扰性。

We fit the anisotropic interaction potential based on the Murrell-Sorbie potential function for He-HCl system by applying the interaction energy data, which are calculated at the theoretical level of the single and double excitation coupled-cluster method with noniteractive perturbation treatment of triple excitation CCSD. The new potential model is compared with other potential models. The differential scattering cross sections for collisions between He atoms and HCl molecules are calculated by using CC (Close-Coupling) method. Furthermore, the changing regularity of the inelastic differential scattering cross sections is summed up.

根据在CCSD/aug-cc-pVQZ理论水平下计算的He-HCl相互作用能数据，作者采用Murrell-Sorbie势函数形式拟合了He原子与HCl分子相互作用的各向异性势，并与其它势模型进行了比较；然后采用公认的精确度较高的CC近似方法计算了He-HCl碰撞体系的微分散射截面，总结了非弹性微分散射截面的变化规律。

Panorama Many people are dancing in a large sitting room.

在一个大客厅里，许多人在跳舞。

We fully understand how a microwave oven cooks food, it is first necessary to talk ...

我们充分理解一个微波炉煮的食物，这是首先要谈。。。