Natarajan and Hamelin studied the chemical oxidation of carbon nanotubes with 1:1 proportion of 7.5 M H2SO4 and 15 M HNO3 solutions.

• 纳塔拉和哈梅林研究了化学氧化碳纳米管的1:1比例的7.；5米H2SO4和15米硝酸的解决办法。