中国化学工程学报（英文版）
中國化學工程學報（英文版）
중국화학공정학보（영문판）
CHINESE JOURNAL OF CHEMICAL ENGINEERING
2007年
4期
507-511
,共5页
周丽绘%胡军%谢颂海%刘洪来
週麗繪%鬍軍%謝頌海%劉洪來
주려회%호군%사송해%류홍래
SBA-15%Au-SBA-15%Au nanoparticles%deposition-precipitation%chemical modification
Chemical modification (CM) and deposition-precipitation (DP) methods were used for the dispersion of active Au nanoparticles on mesoporous silica materials in this work. XRD, TEM, N2 adsorption isotherms and UV-Vis absorption spectra were used to characterize in detail Au-SBA-15 materials prepared by the two methods.The analysis results showed that high loading (1.7%, by mass) and uniform Au nanoparticles (approximately 3 nm)were dispersed in the channels of mesoporous SBA-15 by the CM method. While for the DP method, most of Au nanoparticles with the size of 10-15 nm were aggregated outside of the channels of SBA-15 and the actual loading of Au was only 0.38% (by mass).
