Copper has been deposited on the surface of multiwailed carbon nanombes （MWNTs） and inside MWNTs by electroless deposition. The as-prepared Cu-MWNT composite materials have been characterized by X-ray diffractometer...Copper has been deposited on the surface of multiwailed carbon nanombes （MWNTs） and inside MWNTs by electroless deposition. The as-prepared Cu-MWNT composite materials have been characterized by X-ray diffractometer （XRD）, transmission electron microscopy （TEM）, and electrochemical measurement. XRD analyses showed that Cu was a face-centered cubic （fcc） structure. The average size of Cu was calculated by Scherrer＇s formula from XRD data, and it was 11 nm. TEM revealed that Cu grains on the surface of MWNTs were uniform with the sizes of about 30-60 nm. The electrochemical measurement indicated that Cu-MWNT composite materials possessed fine electron conductivity.展开更多
为改善玻璃纤维织物的导电性,以玻纤布为基底,采用化学镀法制备了Ag/玻纤布导电复合材料。使用扫描电子显微镜(scanning electron microscope,SEM)、X-射线衍射(X-ray diffraction,XRD)和对复合材料体积电阻率的测试,研究了硝酸银和氢...为改善玻璃纤维织物的导电性,以玻纤布为基底,采用化学镀法制备了Ag/玻纤布导电复合材料。使用扫描电子显微镜(scanning electron microscope,SEM)、X-射线衍射(X-ray diffraction,XRD)和对复合材料体积电阻率的测试,研究了硝酸银和氢氧化钠用量对复合材料形貌、结构和导电性的影响。实验结果表明:随着氢氧化钠和硝酸银用量的增加,玻纤布表面的金属镀层逐渐趋于完整,当氢氧化钠和硝酸银过量时,镀层变粗糙;复合材料的体积电阻率随氢氧化钠和硝酸银用量的增加呈先下降、后上升的趋势。当氢氧化钠和硝酸银的用量分别为0.3g和0.8g时,在纤维布表面包覆了1层均匀且致密的面心立方结构的Ag镀层,而且所制备的复合材料具有良好的导电性,其体积电阻率为6.42×10-4Ω·cm。该复合材料具有优异的导电性,在导电填料、电磁屏蔽、医疗等领域具有潜在的应用前景。展开更多
基金This work was financially supported by the Natural Science Foundation of Guangdong Province, China (No. 04300695) and the Starting-up Research Foundation of Jinan University (No 51204022)
文摘Copper has been deposited on the surface of multiwailed carbon nanombes （MWNTs） and inside MWNTs by electroless deposition. The as-prepared Cu-MWNT composite materials have been characterized by X-ray diffractometer （XRD）, transmission electron microscopy （TEM）, and electrochemical measurement. XRD analyses showed that Cu was a face-centered cubic （fcc） structure. The average size of Cu was calculated by Scherrer＇s formula from XRD data, and it was 11 nm. TEM revealed that Cu grains on the surface of MWNTs were uniform with the sizes of about 30-60 nm. The electrochemical measurement indicated that Cu-MWNT composite materials possessed fine electron conductivity.
文摘为改善玻璃纤维织物的导电性,以玻纤布为基底,采用化学镀法制备了Ag/玻纤布导电复合材料。使用扫描电子显微镜(scanning electron microscope,SEM)、X-射线衍射(X-ray diffraction,XRD)和对复合材料体积电阻率的测试,研究了硝酸银和氢氧化钠用量对复合材料形貌、结构和导电性的影响。实验结果表明:随着氢氧化钠和硝酸银用量的增加,玻纤布表面的金属镀层逐渐趋于完整,当氢氧化钠和硝酸银过量时,镀层变粗糙;复合材料的体积电阻率随氢氧化钠和硝酸银用量的增加呈先下降、后上升的趋势。当氢氧化钠和硝酸银的用量分别为0.3g和0.8g时,在纤维布表面包覆了1层均匀且致密的面心立方结构的Ag镀层,而且所制备的复合材料具有良好的导电性,其体积电阻率为6.42×10-4Ω·cm。该复合材料具有优异的导电性,在导电填料、电磁屏蔽、医疗等领域具有潜在的应用前景。
