Carboxyl Group Functionalization of Mesoporous Carbon Nanocage through Reaction with Ammonium Persulfate - Ariga Katsuhiko; Srinivasu Pavuluri; Balasubramanian Veerappan Vaithilingam; Kumaresan Loganathan; Sawant Dhanashri Prakash; Jin Xin; Alam Sher; Mori Toshiyuki; Vinu Ajayan (2007)