Electrochemical polarization measurement and electrochemical impedance spectroscopy(EIS) were used to study the corrosion inhibition effect of 1-dodecanethiol on copper in 3% NaCl solution.The results showed 1-dodecan...Electrochemical polarization measurement and electrochemical impedance spectroscopy(EIS) were used to study the corrosion inhibition effect of 1-dodecanethiol on copper in 3% NaCl solution.The results showed 1-dodecanethiol had better corrosion inhibition effect on copper.The corrosion inhibition ability of 1-dodecanethiol was decreased with the adding of benzotrizole, while the same degree of corrosion happened without benzotrizole when pH value of the media decreased to about 1.0.The above corrosion inhibition behavior was supported by SEM.展开更多
The effects of chitosan inhibitor on the corrosion behavior of 2205 duplex stainless steel were studied by electrochemical measurements, immersion tests, and stereology microscopy. The influences of immersion time, te...The effects of chitosan inhibitor on the corrosion behavior of 2205 duplex stainless steel were studied by electrochemical measurements, immersion tests, and stereology microscopy. The influences of immersion time, temperature, and chitosan concentration on the corrosion inhibition performance of chitosan were investigated. The optimum parameters of water-soluble chitosan on the corrosion inhibition performance of 2205 duplex stainless steel were also determined. The water-soluble chitosan showed excellent corrosion inhibition performance on the 2205 duplex stainless steel. Polarization curves demonstrated that chitosan acted as a mixed-type inhibitor. When the stainless steel specimen was immersed in the 0.2 g/L chitosan solution for 4 h, a dense and uniform adsorption film covered the sample surface and the inhibition efficiency(IE) reached its maximum value. Moreover, temperature was found to strongly influence the corrosion inhibition of chitosan; the inhibition efficiency gradually decreased with increasing temperature. The 2205 duplex stainless steel specimen immersed in 0.4 g/L water-soluble chitosan at 30°C displayed the best corrosion inhibition among the investigated specimens. Moreover, chitosan decreased the corrosion rate of the 2205 duplex stainless steel in an FeCl_3 solution.展开更多
This paper reviews the recent progress in the electron transfer and interfacial behavior of redox proteins. Significant achievements in the relevant fields are summarized including the direct electron transfer between...This paper reviews the recent progress in the electron transfer and interfacial behavior of redox proteins. Significant achievements in the relevant fields are summarized including the direct electron transfer between proteins and electrodes, the thermodynamic and kinetic properties, catalytic activities and activity regulation of the redox proteins. It has been demonstrated that the electrochemical technique is an effective tool for protein studies, especially for probing into the electron transfer and interfacial behavior of redox proteins.展开更多
文摘Electrochemical polarization measurement and electrochemical impedance spectroscopy(EIS) were used to study the corrosion inhibition effect of 1-dodecanethiol on copper in 3% NaCl solution.The results showed 1-dodecanethiol had better corrosion inhibition effect on copper.The corrosion inhibition ability of 1-dodecanethiol was decreased with the adding of benzotrizole, while the same degree of corrosion happened without benzotrizole when pH value of the media decreased to about 1.0.The above corrosion inhibition behavior was supported by SEM.
基金financially supported by the National Natural Science Foundation of China (No. 81371183)
文摘The effects of chitosan inhibitor on the corrosion behavior of 2205 duplex stainless steel were studied by electrochemical measurements, immersion tests, and stereology microscopy. The influences of immersion time, temperature, and chitosan concentration on the corrosion inhibition performance of chitosan were investigated. The optimum parameters of water-soluble chitosan on the corrosion inhibition performance of 2205 duplex stainless steel were also determined. The water-soluble chitosan showed excellent corrosion inhibition performance on the 2205 duplex stainless steel. Polarization curves demonstrated that chitosan acted as a mixed-type inhibitor. When the stainless steel specimen was immersed in the 0.2 g/L chitosan solution for 4 h, a dense and uniform adsorption film covered the sample surface and the inhibition efficiency(IE) reached its maximum value. Moreover, temperature was found to strongly influence the corrosion inhibition of chitosan; the inhibition efficiency gradually decreased with increasing temperature. The 2205 duplex stainless steel specimen immersed in 0.4 g/L water-soluble chitosan at 30°C displayed the best corrosion inhibition among the investigated specimens. Moreover, chitosan decreased the corrosion rate of the 2205 duplex stainless steel in an FeCl_3 solution.
基金support from the National Natural Science Foundation of China (Grant Nos. 90406005 & 20575028) the Program for New Century Excellent Talents in University,the Chinese Ministry of Education (Grant No. NCET-04-0452)
文摘This paper reviews the recent progress in the electron transfer and interfacial behavior of redox proteins. Significant achievements in the relevant fields are summarized including the direct electron transfer between proteins and electrodes, the thermodynamic and kinetic properties, catalytic activities and activity regulation of the redox proteins. It has been demonstrated that the electrochemical technique is an effective tool for protein studies, especially for probing into the electron transfer and interfacial behavior of redox proteins.
