Functionalized hollow siliceous spheres for VOCs removal with high efficiency and stability.
Functionalized hollow siliceous spheres (HSSs) have been prepared by surface modification with trimethylchlorosilane (TMCS) for the removal of volatile organic compounds (VOCs). The resultant HSSs-TMCS possesses a uniform and well-dispersed hollow spherical structure, high surface area, large total pore volume, high VOCs adsorption capacity, and small water vapor adsorption capacity. The adsorption and desorption performance of HSSs-TMCS under static (n-hexane and 93# gasoline) and dynamic (n-hexane) conditions was investigated. Compared with commercial silica gel (SG) and activated carbon (AC), HSSs-TMCS show higher capacity of adsorbing n-hexane and 93# gasoline with good stability and low water vapor adsorption capacity under static adsorption conditions, higher dynamic adsorption capacity and stable breakthrough time under dynamic adsorption conditions. The high efficiency and stability of functionalized HSSs are associated with their unique hollow morphology and structure parameters. The designed HSSs-TMCS with high VOCs removal capacity and recyclability are promising candidates for the treatment of air pollution.
School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, 1 Gehu Road, Changzhou, Jiangsu 213164, PR China.
Hongning
H
Wang
School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, 1 Gehu Road, Changzhou, Jiangsu 213164, PR China.
Mei
M
Tang
School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, 1 Gehu Road, Changzhou, Jiangsu 213164, PR China.
Ke
K
Zhang
Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University, Xingyuan Road, Changzhou, Jiangsu 213016, PR China.
Daofei
D
Cai
Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University, Xingyuan Road, Changzhou, Jiangsu 213016, PR China.
Weiqiu
W
Huang
School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, 1 Gehu Road, Changzhou, Jiangsu 213164, PR China. Electronic address: cxdcry@163.com.
Ruoyu
R
Chen
Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia.
Chengzhong
C
Yu
D000327:Adsorption; D000393:Air Pollutants / Q000302:isolation & purification*; D057927:Hydrophobic and Hydrophilic Interactions; D046529:Microscopy, Electron, Transmission; D008863:Microspheres; D010316:Particle Size; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties; D014297:Trimethylsilyl Compounds / Q000737:chemistry; D055549:Volatile Organic Compounds / Q000302:isolation & purification*
D000393:Air Pollutants; D014297:Trimethylsilyl Compounds; D055549:Volatile Organic Compounds; C039293:trimethylchlorosilane; D012822:Silicon Dioxide
Hollow siliceous spheres; Hydrophobic modification; VOCs adsorption; Water vapor adsorption