2.2. Preparation of GPTMS modified GO (GPTMS-GO)
Typically, 200 mg of GO powders was firstly dispersed into
180 mL ethanol/deionized water (4/5, v/v) solution with sonication to get well-dispersed GO suspension, then 0.2 mL GPTMS was added into the suspension followed by sonication for 15 min. The mixture was constantly stirred under nitrogen atmosphere and