Cu-graphene(Gr)composite thin films were prepared by electrodeposition route using in-house synthesized Gr sheets.The Gr sheets were synthesized by the electrochemical exfoliation route using 1 M HClO4 acid as electro...Cu-graphene(Gr)composite thin films were prepared by electrodeposition route using in-house synthesized Gr sheets.The Gr sheets were synthesized by the electrochemical exfoliation route using 1 M HClO4 acid as electrolyte.The Gr sheets were confirmed by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR),field-emission scanning electron microscopy(FESEM),and transmission electron microscopy(TEM).The(002)plane of Gr sheets was observed at 2θof 25.66°.The(002)plane confirmed the crystal structure of car-bon peaks.The stretching vibration of C=C bond at a wavelength of 1577 cm^(−1) and other functional groups of carboxyl and epoxide groups were observed from FTIR.TEM confirmed the transparent structure of Gr sheets.The prepared Gr sheets were used as reinforcement at con-centrations of 0.1 and 0.3 g/L with a copper matrix to synthesize the Cu-Gr composite.The prepared composite thin films were characterized by XRD,SEM,and energy-dispersion spectrometry(EDS)for morphological and analytical studies.The presence of Gr sheets in Cu-Gr com-posite was confirmed by EDS analysis.The prepared Cu-Gr nanocomposite thin film showed higher corrosion resistance compared with pure copper thin films in 3.5wt%NaCl,as confirmed by Tafel plots.Electrochemical impedance spectroscopy complimented the above results and showed that 0.3 g/L composite film achieved the highest film resistance.展开更多
基金The authors gratefully acknowledge the partial financial support of this work by the Department of Science and Technology(DST)India via grant number EEQ/2018/001452 and National Institute of Technology,Rourkela,India for the financial and infrastructure support.
文摘Cu-graphene(Gr)composite thin films were prepared by electrodeposition route using in-house synthesized Gr sheets.The Gr sheets were synthesized by the electrochemical exfoliation route using 1 M HClO4 acid as electrolyte.The Gr sheets were confirmed by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR),field-emission scanning electron microscopy(FESEM),and transmission electron microscopy(TEM).The(002)plane of Gr sheets was observed at 2θof 25.66°.The(002)plane confirmed the crystal structure of car-bon peaks.The stretching vibration of C=C bond at a wavelength of 1577 cm^(−1) and other functional groups of carboxyl and epoxide groups were observed from FTIR.TEM confirmed the transparent structure of Gr sheets.The prepared Gr sheets were used as reinforcement at con-centrations of 0.1 and 0.3 g/L with a copper matrix to synthesize the Cu-Gr composite.The prepared composite thin films were characterized by XRD,SEM,and energy-dispersion spectrometry(EDS)for morphological and analytical studies.The presence of Gr sheets in Cu-Gr com-posite was confirmed by EDS analysis.The prepared Cu-Gr nanocomposite thin film showed higher corrosion resistance compared with pure copper thin films in 3.5wt%NaCl,as confirmed by Tafel plots.Electrochemical impedance spectroscopy complimented the above results and showed that 0.3 g/L composite film achieved the highest film resistance.
