Results 121 to 130 of about 1,599,637 (163)

A carbon single crystal electrode for an electrochemical quartz crystal microbalance study

Journal of Electroanalytical Chemistry, 1996
A highly ordered single crystal carbon material, highly oriented pyrolytic graphite (HOPG) has been successfully employed as a working electrode in an electrochemical quartz crystal microbalance study. RTV silicone rubber is selected to adhere the HOPG film onto the quartz crystal surface.
Erkang Wang, Jingdong Zhang
exaly   +2 more sources

Quartz Crystal Microbalance Investigation of Electrochemical Calcium Carbonate Scaling

Journal of The Electrochemical Society, 1998
Electrochemical calcareous scaling was investigated by using a quartz microbalance in order to devise an accelerated scaling test. The chronoamperometric and the chronoelectrogravimetric curves were simultaneously recorded during scaling in carbonically pure waters.
Gabrielli, Claude, Keddam, Michel, Khalil, A., Maurin, Georges, Perrot, Hubert, Rosset, Robert, Zidoune, M.   +6 more
openaire   +3 more sources

Calibration of the Electrochemical Quartz Crystal Microbalance

Journal of The Electrochemical Society, 1991
The quartz crystal microbalance seems to be a very useful tool in electrochemical studies, but, up to now, no attempts have been made to calibrate the microbalance under electrochemical conditions. The aim of this paper is to determine not only the average sensitivity for different active areas but also the differential sensitivity as a function of the
Gabrielli, Claude, Keddam, Michel, Torresi, Roberto   +2 more
openaire   +1 more source

Time-resolved electrochemical quartz crystal microbalance

Journal of Electroanalytical Chemistry, 1994
Abstract A time-resolved electrochemical quartz crystal microbalance is described for the first time. In this equipment the frequency of the signal obtained equals the difference between the frequency of the working crystal resonator and the fixed frequency of a reference resonator.
Wu Bing-Liang, Lei Han-Wei, Cha Chuan-Sin   +2 more
openaire   +1 more source

Performances and Limits of a Parallel Oscillator for Electrochemical Quartz Crystal Microbalances

Analytical Chemistry, 2002
This paper describes a driving circuit for an electrochemical quartz crystal microbalance (EQCM) adapted to a wide range of applications. The oscillator is a Miller-type parallel oscillator using an operational transconductance amplifier (OTA). A theoretical study of the oscillating circuit led to the analytical expression of the microbalance frequency
Ehahoun, Hervé, Gabrielli, Claude, Keddam, Michel, Perrot, Hubert, Rousseau, Philippe   +4 more
openaire   +3 more sources

Electrochemical study of methylalkylviologens using an electrochemical quartz crystal microbalance

Journal of Electroanalytical Chemistry, 1999
Abstract The electrochemical behavior of various 1-methyl-1′-alkylviologens (C 1 C n V 2+ : n =1, 7, 8, 9, 10, 12, 14, 16 and 18) was studied using an electrochemical quartz crystal microbalance (EQCM). Three different types of the frequency change-potential (Δ f – E ) curves were observed depending on the length of alkyl substituent during the ...
Chongmok Lee, Youn Kyung Lee, Youngmi Lee, Il Cheol Jeon   +3 more
openaire   +1 more source

Determination of the electromechanical parameters of the electrochemical quartz crystal microbalance

Electrochimica Acta, 1998
Abstract In this work we present a simple mechanical/electrical model for the electrochemical quartz crystal microbalance (EQCM). It consists of a harmonic oscillator (effective mass equal to one half of the crystal mass) coupled to an elastic element and in contact with a viscous fluid.
Soares, D., Tenan, M., Wasle, S.
openaire   +2 more sources

Novel Applications of the Electrochemical Quartz Crystal Microbalance

ECS Meeting Abstracts, 2006
Abstract not Available.
openaire   +1 more source

Electrochemical Studies of Rose Bengal Using the Electrochemical Quartz Crystal Microbalance

ECS Meeting Abstracts, 2006
Abstract not Available.
Fabrice P. Andrieux, Colin Boxall
openaire   +1 more source

An electrochemical quartz crystal microbalance study of the etching of gold surfaces in the presence of tetramethylthiourea

Journal of Colloid and Interface Science, 2004
The oxidation of tetramethylthiourea (TMTU) at gold electrodes in acetonitrile, leading to dissolution of the electrode, has been studied by electrochemical methods and by an electrochemical quartz crystal microbalance (EQCM). TMTU in acetonitrile readily adsorbs at gold electrodes and an estimated coverage of 5.5 x 10(-10) mol cm(-2) (30 A2 per ...
Larsen, A.G., Johannsen, K., Gothelf, Kurt Vesterager   +2 more
openaire   +3 more sources