[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637457, Singapore
[2] Nanyang Technol Univ, Ctr Adv Bionanosyst, Singapore 637457, Singapore
[3] Southwest Univ, Inst Clean Energy & Adv Mat, Chongqing 400715, Peoples R China
[4] Chongqing Key Lab Adv Mat & Technol Clean Elect P, Chongqing 400715, Peoples R China