A novel hydrothermal releasing synthesis of modified SiO2 material and its application in phenol removal process

作者：Yang, Xinyu; Liu, Xiaoyao; Tang, Wenjing; Gao, Yajun; Ni, Huijuan; Zhang, Jianbin^*

来源：Korean Journal of Chemical Engineering, 2017, 34(3): 723-733.

DOI：10.1007/s11814-016-0311-3

• MSM
• CO2SM
• Hydrothermal Releasing Method
• Adsorption
• Phenol

A modified SiO2 material (MSM) was successfully synthesized by using Na2SiO3 and a novel CO2SM in the presence of CTAB through an innovative hydrothermal releasing treatment protocol. The MSM was systemically characterized using several techniques, including N-2 adsorption-desorption isotherm, thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The CO2SM as a platform for CO2 capturing and releasing can be reversibly used for multiple cycles without significant loss of capabilities. The optimum conditions for the preparation of MSM were identified as follows: Na(2)SiO3 concentration, 0.2mol/L; hydrothermal temperature, 120 A degrees C; CO2SM dosage, 6 g; CTAB concentration, 24 g/L, reaction time, 12 h. Additionally, the MSM exhibited high efficiency for the removal of phenol from aqueous solution: it showed a phenol adsorption capacity of 91.29mg/g when shaken with the aqueous phenol solution at 180 rpm for 1 h at 25 A degrees C.

• 出版日期2017-3
• 单位内蒙古工业大学