【外文翻譯】iro2╟sio2二元氧化物薄膜：制備，理化特性和它們的電化學(xué)性能.rar
【外文翻譯】iro2–sio2二元氧化物薄膜：制備，理化特性和它們的電化學(xué)性能,【外文翻譯】iro2╟sio2二元氧化物薄膜：制備，理化特性和它們的電化學(xué)性能摘 要混合iro2- sio2系氧化物薄膜是通過溶解在有機溶劑中的氯銥酸(h2ircl6)和正硅酸乙酯(teos)這些混合前驅(qū)體在鈦基上制備。該溶液化學(xué)和混合前驅(qū)體熱分解動力學(xué)性能可分別通過紫外/可見（紫外/可見）光譜和熱重（tga）和差熱分...
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【外文翻譯】IrO2–SiO2二元氧化物薄膜：制備，理化特性和它們的電化學(xué)性能
摘 要
混合IrO2- SiO2系氧化物薄膜是通過溶解在有機溶劑中的氯銥酸(H2IrCl6)和正硅酸乙酯(TEOS)這些混合前驅(qū)體在鈦基上制備。該溶液化學(xué)和混合前驅(qū)體熱分解動力學(xué)性能可分別通過紫外/可見（紫外/可見）光譜和熱重（TGA）和差熱分析（DTA）等進行了研究。由此生成的材料的理化特性可通過X射線衍射儀（XRD），掃描電子顯微鏡（SEM）和電化學(xué)測試進行表征。從紫外/可見光譜可以看出，電子吸收的IrCl6復(fù)合物強度在錄得跌幅的前體TEOS的存在，說明這兩組分之間的相互作用。熱分析顯示H2IrCl6分解反應(yīng)是由正硅酸乙酯在低的溫度范圍被抑制，但在高溫下形成的中間產(chǎn)物進一步氧化反應(yīng)是獨立存在的硅烷組分。物理測量顯示，硅在IrO2結(jié)晶和晶體生長過程約束作用導(dǎo)致形成了細氧化物顆粒和多孔氧化膜的二元形態(tài)。多孔復(fù)合薄膜表現(xiàn)出對析氧反應(yīng)高且明顯電催化活性。此外，在恒電流電解測試下，發(fā)現(xiàn)適量SiO2的摻入可以使Ti支持的銥電極長期穩(wěn)定性明顯改善。
abstract
Mixed IrO2–SiO2 oxide ?lms were prepared on titanium substrate by the thermo-decomposition of
hexachloroiridate (H2IrCl6) and tetraethoxysilane (TEOS) mixed precursors in organic solvents. The
solution chemistry and thermal decomposition kinetics of the mixed precursors were investigated by
ultra violet/visible (UV/vis) spectroscopy and thermogravimetry (TGA) and differential thermal analysis
(DTA), respectively. The physiochemical characterization of the resulting materials was conducted
by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical measurements.
It is shown from the UV/vis spectra that the electronic absorption intensity of IrCl6
2? complexes
in the precursors decreases in the presence of TEOS, indicating the interaction between these two
components. Thermal analysis shows the decomposition reaction of H2IrCl6 is inhibited by TEOS in the
low temperature range, but the further oxidation reaction at high temperatures of formed intermediates
is independent of the presence of silane component. Physical measurements show a restriction effect
of silica on the crystallization and crystal growth processes of IrO2, leading to the formation of ?ner
oxide particles and the porousmorphology of the binary oxide ?lms. The porous composite ?lms exhibit
high apparent electrocatalytic activity toward the oxygen evolution reaction. In addition, the long-term
stability of Ti-supported IrO2 electrodes is found to apparently improve with appropriate amount of
SiO2 incorporation, as tested under galvanostatic electrolysis.
摘 要
混合IrO2- SiO2系氧化物薄膜是通過溶解在有機溶劑中的氯銥酸(H2IrCl6)和正硅酸乙酯(TEOS)這些混合前驅(qū)體在鈦基上制備。該溶液化學(xué)和混合前驅(qū)體熱分解動力學(xué)性能可分別通過紫外/可見（紫外/可見）光譜和熱重（TGA）和差熱分析（DTA）等進行了研究。由此生成的材料的理化特性可通過X射線衍射儀（XRD），掃描電子顯微鏡（SEM）和電化學(xué)測試進行表征。從紫外/可見光譜可以看出，電子吸收的IrCl6復(fù)合物強度在錄得跌幅的前體TEOS的存在，說明這兩組分之間的相互作用。熱分析顯示H2IrCl6分解反應(yīng)是由正硅酸乙酯在低的溫度范圍被抑制，但在高溫下形成的中間產(chǎn)物進一步氧化反應(yīng)是獨立存在的硅烷組分。物理測量顯示，硅在IrO2結(jié)晶和晶體生長過程約束作用導(dǎo)致形成了細氧化物顆粒和多孔氧化膜的二元形態(tài)。多孔復(fù)合薄膜表現(xiàn)出對析氧反應(yīng)高且明顯電催化活性。此外，在恒電流電解測試下，發(fā)現(xiàn)適量SiO2的摻入可以使Ti支持的銥電極長期穩(wěn)定性明顯改善。
abstract
Mixed IrO2–SiO2 oxide ?lms were prepared on titanium substrate by the thermo-decomposition of
hexachloroiridate (H2IrCl6) and tetraethoxysilane (TEOS) mixed precursors in organic solvents. The
solution chemistry and thermal decomposition kinetics of the mixed precursors were investigated by
ultra violet/visible (UV/vis) spectroscopy and thermogravimetry (TGA) and differential thermal analysis
(DTA), respectively. The physiochemical characterization of the resulting materials was conducted
by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical measurements.
It is shown from the UV/vis spectra that the electronic absorption intensity of IrCl6
2? complexes
in the precursors decreases in the presence of TEOS, indicating the interaction between these two
components. Thermal analysis shows the decomposition reaction of H2IrCl6 is inhibited by TEOS in the
low temperature range, but the further oxidation reaction at high temperatures of formed intermediates
is independent of the presence of silane component. Physical measurements show a restriction effect
of silica on the crystallization and crystal growth processes of IrO2, leading to the formation of ?ner
oxide particles and the porousmorphology of the binary oxide ?lms. The porous composite ?lms exhibit
high apparent electrocatalytic activity toward the oxygen evolution reaction. In addition, the long-term
stability of Ti-supported IrO2 electrodes is found to apparently improve with appropriate amount of
SiO2 incorporation, as tested under galvanostatic electrolysis.
