Dhand Vivek, Prasad J Sarada, Rao M Venkateswara, Bharadwaj S, Anjaneyulu Y, Jain Pawan Kumar
Centre for Knowledge Management of Nanoscience and Technology, 12-5-32/8, Vijayapuri Colony, Tarnaka, Secunderabad-500 017, A.P, India.
Centre for Environment, Institute of Science and Technology, Jawaharlal Nehru Technological University, Kukatpally, Hyderabad 500 085, India.
Mater Sci Eng C Mater Biol Appl. 2013 Mar 1;33(2):758-62. doi: 10.1016/j.msec.2012.10.029. Epub 2012 Nov 7.
Densely agglomerated, high specific surface area carbon nano onions with diameter of 30-40 nm have been synthesized. Liquefied petroleum gas and air mixtures produced carbon nano onions in diffusion flames without catalyst. The optimized oxidant to fuel ratio which produces carbon nano onions has been found to be 0.1 slpm/slpm. The experiment yielded 70% pure carbon nano onions with a rate of 5 g/h. X-ray diffraction, high-resolution electron microscopy and Raman spectrum reveal the densely packed sp(2) hybridized carbon with (002) semi-crystalline hexagonal graphite reflection. The carbon nano onions are thermally stable up to 600 °C.
已合成出直径为30 - 40纳米的密集团聚、高比表面积的碳纳米洋葱。液化石油气与空气的混合物在无催化剂的扩散火焰中生成了碳纳米洋葱。已发现生成碳纳米洋葱的最佳氧化剂与燃料比为0.1 slpm/slpm。该实验以5克/小时的速率产出了纯度为70%的碳纳米洋葱。X射线衍射、高分辨率电子显微镜和拉曼光谱显示出具有(002)半结晶六方石墨反射的紧密堆积的sp(2)杂化碳。碳纳米洋葱在高达600℃时具有热稳定性。
