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cyclic voltammetry cv
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     Cyclic voltammetry (CV) was also used for the comparison.
     同时也将该结果与循环伏安法 (CV)结果作了比较 .
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     Cyclic voltammetry(CV) was used to investigate the electrochemical characteristics of the sensor.
     采用循环伏安法考察了传感器的电化学性质,并研究了该修饰电极对NADH的电催化作用。
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     methanofullerenes have been investigated using cyclic voltammetry(CV)systematically and comparatively.
     考虑到在生物、新型材料等方面的应用,采用循环伏安(CV)的方法,系统研究了11个C60螺亚甲基衍生物的电化学性质.
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     The Determination of Diuretics by Cyclic Voltammetry
     利尿剂的循环伏安法检测
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     cv.
     cv.
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  cyclic voltammetry cv
The electrochemical assay of bromide and iodide ions at boron-doped diamond (BDD) electrode was investigated by cyclic voltammetry (CV) and chronoamperometry (CA).
      
A large increase in the peak currents was observed in cyclic voltammetry (CV) and differential pulse voltammetry (DPV) of OF, NF, GF, and LF at CDMCPE compared with a bare carbon-paste electrode (CPE).
      
Electrochemical behavior of modified electrode is investigated by electrochemical impedance spectroscopy (EIS), different pulse voltammetry (DPV), and cyclic voltammetry (CV).
      
Polypyrrole (PPy) and polypyrrole-tungstate (PPy-WO42-) coatings were electrodeposited on mild steel (MS) electrodes by cyclic voltammetry (CV) technique.
      
The effect of Sn content on properties of anodic film formed on PbSn alloys in sulfuric acid solution was investigated using linear sweeping voltage (LSV), cyclic voltammetry (CV), and a.c.
      
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The electro-polymerization process of cobalt protoporphyrin dimethyl ester (CoPP) at glassy carbon electrode has been investigated via cyclic voltammetry (CV). The mechanism of CoPP film formation is suggested to be a radical-cation-initiated vinyl polymerization. A transitional macrocyclic conjugation system in the presence of central cobalt ions dromotes the electro-chemical oxidation of vinyl groups linked to the porphyrin ring and thus results in the formation of radical-cation-vinyl. The...

The electro-polymerization process of cobalt protoporphyrin dimethyl ester (CoPP) at glassy carbon electrode has been investigated via cyclic voltammetry (CV). The mechanism of CoPP film formation is suggested to be a radical-cation-initiated vinyl polymerization. A transitional macrocyclic conjugation system in the presence of central cobalt ions dromotes the electro-chemical oxidation of vinyl groups linked to the porphyrin ring and thus results in the formation of radical-cation-vinyl. The UV-vis spectra of the polymeric film formed on transparent SnO2 electrode show a shift of several nm to red and become broader as compared with original one. An analysis of ESCA spectra reveals that central cobalt ions stay still in polymeric film and certain groups on porphyrin ring are displaced by oxo-groups. The modified electrode prepared via electro-chemical polymerization of CoPP molecules on glassy carbon surface(polyCoPP/GC) shows high catalytic activity and stability for dioxygen reduction. No change of the catalytic peak current for dioxygen reduction is observed through 400 cycles of potential scans (100mV/s) in oxygen saturated 0.05 mol/l H2SO4 solution. The catalytic reduction of dioxygen at polyCoPP/GC electrode belongs to 2-electron irreversible process to hydrogen peroxide.

用循环伏安法(CV)研究了钴原卟琳二甲酯(CoPP)在玻碳(GC)电极表面的电化学聚合过程,为阳离子聚合机理,中心钴离子促进乙烯基电化学氧化成为阳离子自由基而发生聚合反应。聚钴卟啉的紫外可见光谱较单体钴卟琳的光谱向长波方向移动,ESCA分析表明,聚合后钴离子仍存在于卟啉环上,有部分基团为氧取代,聚 CoPP薄膜修饰玻碳〔聚(CoPP)/GC〕电极具有催化还原氧的高稳定性,在O饱和的0.05mol/HSO_4溶液中经CV扫描400次(100mV/s),其催化峰电流不变,聚(CoPP)/GC电极主要催化O二电子还原为HO。

The chemical reactions coupled with the phase transfer of Co(Ⅱ) catalyzed by 2,2′ -bipyridine across the water/nitrobenzene interface have been observed by using cyclic voltammetry (CV). Coupled chemical reactions both in the organic phase or in the aqueus phase influence the CV behavior of successive complex phase transfer obviously and an irreversible phenomenon similar to that existed at the metal electrode/electrolyte solution interface was observed. For different complexes, the phase...

The chemical reactions coupled with the phase transfer of Co(Ⅱ) catalyzed by 2,2′ -bipyridine across the water/nitrobenzene interface have been observed by using cyclic voltammetry (CV). Coupled chemical reactions both in the organic phase or in the aqueus phase influence the CV behavior of successive complex phase transfer obviously and an irreversible phenomenon similar to that existed at the metal electrode/electrolyte solution interface was observed. For different complexes, the phase transfer mechanism is different

循环伏安法研究表明2,2′-联吡啶催化Co(Ⅱ)通过水/硝基苯界面的相转移伴有化学反应发生。水相或有机相的伴随化学反应直接影响Co(Ⅱ)与2,2′-联吡啶逐级配合物的相转移的循环伏安行为,并观察到类似于金属电极/电解质溶液界面出现的不可逆渡,不同的配合物,相转移机制不同。

The Electrochemical stability of poly(3-methylthiophene) (PMT) thin film modified glassy carbon electrodes was investigated experimentally with successive cyclic voltammetry (CV) The effects of electrolyte solutions on the stability were studted. In the presence of small hydrated anions (≤3.5nm) in the solution, the electroactivlty of PMT films decreased with the characteristies of second order kinetics. In a solution with large hydrated anions (≥4nm), PMT films have good stabtlity. PMT/GC...

The Electrochemical stability of poly(3-methylthiophene) (PMT) thin film modified glassy carbon electrodes was investigated experimentally with successive cyclic voltammetry (CV) The effects of electrolyte solutions on the stability were studted. In the presence of small hydrated anions (≤3.5nm) in the solution, the electroactivlty of PMT films decreased with the characteristies of second order kinetics. In a solution with large hydrated anions (≥4nm), PMT films have good stabtlity. PMT/GC electrode can electrocatalyse the oxidation of Br~- and Cl~- anions, and loses its electroactivity rapidly. X-ray photoelectron spectra(XPS) have demonstrated that chlorine has bonded covalently onto the PMT structure after CV cycles in NaCl solutions.

用连续循环伏安法研究了电化学法制备的聚(3-甲基噻吩)(PMT)薄膜修饰玻璃碳电极在不同支持电解质溶液中的电化学稳定性。在易嵌入PMT的阴离子存在下,PMT电活性随扫描次数按表观二级反应降低;在难嵌入PMT的离子存在下,PMT具有良好稳定性;在含有氯、溴离子的水溶液中,PMT可将卤离子电催化氧化,并引起PMT电活性迅速下降。光电子能谱分析表明氯已键合到PMT结构上。

 
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