VERSATILE ASSEMBLY OF MESOPOROUS SILICA MICROPARTICLES VIA SPRAY DRYING
Mesoporous silica is a versatile material with controllable pore size and ease of functionalization,enabling them to be employed in a vast range of applications,such as catalysis,adsorption,and drug delivery.A common method to produce mesoporous silica materials is via a wet chemistry route involving multiple steps,frequently with organic solvents,while producing relatively small amounts of (often polydisperse) nanoparticles.Spray drying offers a faster,easily scalable route of production without waste.The use of a micro-fluidic jet spray dryer developed at Monash University enables the production of monodisperse microparticles in larger quantities compared to wet synthesis methods.Here,a combination of surfactant-templated and evaporation induced self-assembly provides the ability to control the pore size and the particle size of mesoporous microparticles produced.A protocol to assemble these particles was developed with their properties characterized via TEM,SEM,XRD,and nitrogen adsorption.The microparticles demonstrated highly ordered hexagonal mesostructures with high surface areas and pore volumes closely approaching those of mesoporous nanoparticles.The effect of spray drying temperature on particles produced was investigated,demonstrating that even at a relatively low inlet drying temperature of 110 oC,highly ordered,mesoporous particles with high surface areas were produced.The method provided an alternative for low cost and efficient energy processing conditions for the mass production of highly ordered microparticles.
spray drying mesoporous silica scalable synthesis
Kathryn Waldron Winston Duo Wu Wenjie Liu Cordelia Selomulya Dongyuan Zhao X.Dong Chen
Department of Chemical Engineering,Monash University,Wellington Road,Clayton,Victoria,3800,Australia Department of Chemistry and Laboratory of Advanced Materials,Fudan University,Shanghai,200433,P.R.Ch Department of Chemical and Biochemical Engineering,College of Chemistry and Chemical Engineering,Xia
国际会议
The 18th International Drying Symposium Conference(第十八届国际干燥学术大会(IDS2012))
厦门
英文
1-7
2012-01-11（万方平台首次上网日期，不代表论文的发表时间）