Heterocyclic selenium compounds were synthesized and their selfassembled monolayers (SAMs)on gold surface were reported.The heterocyclic selenium compounds are 4,5benzopiazselenole (BP) and anthra selenadiazol6...Heterocyclic selenium compounds were synthesized and their selfassembled monolayers (SAMs)on gold surface were reported.The heterocyclic selenium compounds are 4,5benzopiazselenole (BP) and anthra selenadiazol6,11dione (AS).The cyclic voltammetry results showed that the peaks of the oxidation and reduction of Fe(CN)3/46 almost disappeared after the Au electrode was covered by a monolayer of BP due to forming of SAMs,but AS did not.The reduction peak potentials of the BP and AS were 663mV and 659mV,respectively,in the Na2B4O7 solution with the modified gold electrode,while the reduction peaks potential of the BP and AS were 633mV and 704mV,respectively,with bare gold scanning in Na2B4O7ethanol solution,and the course was cortrolled by adsorption.展开更多
The self-assembly monolayers （SAMs） of n-dodecyltriethoxysilane （DTES） and 1 H, 1 H, 2H, 2H-perflu- orodecyltriethoxysilane （PFDS） on the surface of the 430 stainless steel （430SS） were prepared and their corr...The self-assembly monolayers （SAMs） of n-dodecyltriethoxysilane （DTES） and 1 H, 1 H, 2H, 2H-perflu- orodecyltriethoxysilane （PFDS） on the surface of the 430 stainless steel （430SS） were prepared and their corrosion protection performance was investigated by potentiodynamic polarization, Fourier transform infrared spectroscopy （FTIR） -attenuated total reflection （ATR）, static contact angle and atomic force microscopy （AFM）. The results showed that the alkali pretreatment and the water added into the self-assembly solution could generate more hydrox- yls on the 430SS surface, and then enhanced the adsorption of the SAMs. A suitable temperature of the self-assem- bly solution is important for the formation of the SAMs. The silane SAMs were chemically adsorbed on the 430SS substrates by Fe-O-Si bonds. In all cases tested, PFDS has a better inhibition effect compared with DTES, and the difference in inhibition effect is most marked at the lowest concentration of 1 mmol/L.展开更多
文摘Heterocyclic selenium compounds were synthesized and their selfassembled monolayers (SAMs)on gold surface were reported.The heterocyclic selenium compounds are 4,5benzopiazselenole (BP) and anthra selenadiazol6,11dione (AS).The cyclic voltammetry results showed that the peaks of the oxidation and reduction of Fe(CN)3/46 almost disappeared after the Au electrode was covered by a monolayer of BP due to forming of SAMs,but AS did not.The reduction peak potentials of the BP and AS were 663mV and 659mV,respectively,in the Na2B4O7 solution with the modified gold electrode,while the reduction peaks potential of the BP and AS were 633mV and 704mV,respectively,with bare gold scanning in Na2B4O7ethanol solution,and the course was cortrolled by adsorption.
文摘The self-assembly monolayers （SAMs） of n-dodecyltriethoxysilane （DTES） and 1 H, 1 H, 2H, 2H-perflu- orodecyltriethoxysilane （PFDS） on the surface of the 430 stainless steel （430SS） were prepared and their corrosion protection performance was investigated by potentiodynamic polarization, Fourier transform infrared spectroscopy （FTIR） -attenuated total reflection （ATR）, static contact angle and atomic force microscopy （AFM）. The results showed that the alkali pretreatment and the water added into the self-assembly solution could generate more hydrox- yls on the 430SS surface, and then enhanced the adsorption of the SAMs. A suitable temperature of the self-assem- bly solution is important for the formation of the SAMs. The silane SAMs were chemically adsorbed on the 430SS substrates by Fe-O-Si bonds. In all cases tested, PFDS has a better inhibition effect compared with DTES, and the difference in inhibition effect is most marked at the lowest concentration of 1 mmol/L.
