采用低温等离子技术,通过不同的氧等离子处理时间,制备得到不同的炭黑VXC-72。利用场发射扫描电镜对VXC-72研磨前后的表面形貌进行表征,结果表明研磨后的VXC-72团聚更加严重。采用物理化学吸附仪对VXC-72的比表面积和孔体积进行测量,结果发现研磨后的VXC-72比表面积降低了57.76%。然而等离子处理后,不仅VXC-72的比表面积得到一定的改善,其表面的氧含量也得到有效提升。最后利用四探针法对样品的导电性进行分析,发现氧等离子处理时间越长,电阻率越小。
After being grinded,the functionalized VXC-72 was prepared using oxygen plasma treatment technology under different treatment time.The morphology of VXC-72 was characterized by the field emission scanning electron microscopy (SEM) and the results showed that the grinded VXC-72 had serious agglomeration.Nitrogen adsorption and desorption isotherm were measured by surface area and pore size analyzer.The results revealed that the specific surface area of grinded VXC-72 was decreased by 57.76%,while oxygen plasma treatment efficiently improved the specific surface area and the oxygen content of VXC-72.By four-point probe method,the resistivity of VXC-72 increased with the treatment time.
[1] 胡炳环,林金火,黄鹏飞,等.复印墨粉色素炭黑的研究[J].新型炭材料,2002,17(3):56-62.
[2] 吕艳卓,徐岩,陆天虹.碳黑预处理对Pt/C催化剂对甲醇氧化电催化活性的影响[J].化学学报,2007,65(16):1583-1587.
[3] Tran C,Yang X Q,Qu D Y.Investigation of the gas-diffusion-electrode used as lithium/air cathode in non-aqueous electrolyte and the importance of carbon material porosity[J].J Power Sources,2010,195(7):2057-2063.
[4] Park C K,Park S B,Lee S Y,et al.Electrochemical performances of lithium-air cell with carbon materials[J].Bull Korean Chem Soc,2010,31(11):3221-3224.
[5] Su W,Wang W,Li Y,et al.Fabrication of antimony-doped tin oxide/carbon black composite with oxygen plasma treatment for lithium-air batteries[J].Mater Letters,2016,180:203-206.
[6] Cheng H,Scott K.Carbon-supported manganese oxide nanocatalysts for rechargeable lithium-air batteries[J].Journal of Power Sources,2010,195:1370-1374.
[7] Tebbe M J,Jensen C B,Spitzer W A,et al.The effects of antirhino and enteroviral vinylacetylene benzimidazoles on cytochrome P450 function and hepatic porphyrin levels in mice[J].Antiviarl Research,1999,42(1):25-33.
[8] Du H,Wang J,Yao P,et al.Preparation of modified MWCNTs-doped PAN nanorods by oxygen plasma and their ammonia-sensing properties[J].Journal of Materials Science,2013,48(9):3597-3604.
[9] 戴忠玲,毛明,王友年.等离子体刻蚀工艺的物理基础[J].物理,2006,35(8):693-698.
[10] Ding N,Chien S W,Hor T,et al.Influence of carbon pore size on the discharge capacity of Li-O2 batteries[J].J Mater Chem,2014,2(31):12433-12441.
[11] 吴俊,马志斌,沈武林,等.CVD金刚石中的氮对等离子体刻蚀的影响[J].物理学报,2013,62(7):075202.
[12] Yu L H,Wang R,Xu L.Preparation of acylamino copper phthalocyanine modified multiwalled carbon nanotubes thin films with oxygen plasma treatment[J].Mater Letters,2016,164:282-285.
[13] 唐昆.原料炭黑性能对水基墨中自分散性炭黑特性的影响[J].炭黑译丛,2005(1):12-17.
[14] 曹淑华,董志军,沈丽,等.氧等离子体处理炭黑及其在水中分散性[J].东华大学学报,2009,35(2):186-193.
基金资助
国家自然科学基金(51303131);天津市应用基础与前沿技术研究计划重点项目(15JCZDJC38400)
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