Facile and controllable synthesis of molybdenum disulfide quantum dots for highly sensitive and selective sensing of copper ions
Li Xue, He Da-Wei †, Wang Yong-Sheng, Hu Yin, Zhao Xuan, Fu Chen, Wu Jing-Yan
       

(color online) (a) TEM image of MoS2 QDs. (b) Size distribution histogram of MoS2 QDs. (c) XPS Mo 3d state. (d) XPS S 2p state.