1. Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy, Southwest University, Chongqing 400715, P. R. China; Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Chongqing 400715, P. R. China
2. Research Institute for New Materials Technology, Chongqing University of Arts and Sciences, Chongqing 400715, P. R. China