Graphene Oxide Foam Supported Titanium(IV): Recoverable Heterogeneous Catalyst for Efficient, Selective Oxidation of Arylalkyl Sulfides to Sulfoxides Under Mild Conditions oleh Qinghe Wang, Wenxi Ma, Qiaolin Tong, Guijie Du, Jian Wang, Meng Zhang, Hailun Jiang, Huali Yang, Yongxiang Liu, Maosheng Cheng