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| 1 | SYNTHESIS OF HYDROPHILIC ZnS NANOCRYSTALS AND THEIR APPLICATION IN PHOTOCATALYTIC DEGRADATION OF DYE POLLUTANTS显示文摘Hydrophilic ZnS nanocrystals with narrow size distribution were synthesized via homogeneous precipita- tion using EDTA as stabilizer. The as-synthesized products were characterized with XRD, TEM, HRTEM and UV-Vis spectrum. UV-Vis spectra showed that ZnS nanocrystals exhibited strong quantum-confined effect with a blue shift in the band gap of light absorbance. The photocatalytic activity of these nanocrystals was also investigated for the liquid phase photocatalytic degradation of Basic Violet 5BN (BV5) dye under UV irradiation. It was found that the ZnS nanocrystals had good catalytic activity for photodegradation of BV5. | JunpingLi YaoXu YongLiu DongWu YuhanSun | 2004 | China Particuology2004，2，6： | 5 |
| 2 | Determination of interface layer thickness of a pseudo two—phase system by extension of the Debye equation显示文摘The Debye equation with slit-smeared small angle x-ray scattering(SAXS) data is extended form an ideal two-phase system to a pseudo two-phase system with the presence of the interface layer,and a simple accurate solution is proposed to determine the average thickness of the interface layer in porous materials.This method is tested by experimental SAXS data,which were measured at 25℃,of organo-modified mesoporous silica prepared by condensation of tetraethoxysiland(TEOS) and methyltriethoxysilane(MTES) using non-ionic neutral surfactant as template under neutral condition. | ZhiHongLi YanJunGong MinPu DongWu YuHanSun JunWang YiLiu BaoZh | 2001 | Beijing Synchrotron Radiation Facility2001，，2： | 3 |
| 3 | PREPARATION OF BaSO4 NANOCRYSTALS BY CONTROLLED PRECIPITATION显示文摘 | JunpingLi YaoXu DongWu YuhanSun | 2003 | China Particuology2003，1，3： | 1 |
| 4 | Carbon Dioxide Capture on Amine‐Rich Carbonaceous Materials Derived from Glucose显示文摘 | LiZhao ZoltanBacsik NiklasHedin WeiWei YuhanSun MarkusAntonietti Maria‐MagdalenaTitirici | 2010 | ChemSusChem2010，，7： | 1 |
| 5 | Determination of Average wall Thickness of Mesoporous silica显示文摘Small X-ray Scattering (SAXS) experiment using Synchrotron Radiation as X-ray source was used to determine the average wall thickness of mesoporous silica prepard by condensation of tetraethylorthosilicate(TEOS) using non-ionic alkylpolyethyleneoxide(AEO9) surfactant as templates.The results agreed with that of high-resolution TEM(HRTEM) measurement. | ZhiHongLi YanJunGONG DongWu YuHanSUN JunWANG YiLIU BaoZhongDON | 2001 | Beijing Synchrotron Radiation Facility2001，，2： | 0 |
| 6 | SAXS andalysis of interface in organo—modified mesoporous silica显示文摘A small-angle x-ray scattering(SAXS)technique using synchrotron radiation as the x-ray source has been employed to characterize the microstructure of mesoporous silica prepared by one-pot template-directed synthesis methodology.The scattering of pure silica agreed with Porod’s law.the scattering of organomodified mesoporous silica showed a negative deviation from Porod’s law,suggesting that an interfacial layer exists between the pores and silica matrix.It was the organic groups comprising the interface,as shown by ^29Si cross-polarization magic-angle spinning nuclear magnetic resonance imaging (^29Si cp MAS/NMR) and Fourier transform infrared spectroscopy(FTIR),that caused this negative deviation of SAXS intensity from Porod’s law,and the average thichness of the interfacial layer could be deduced from this negative deviation.Copyright 2001 john Wiley and Sons,Ltd. | ZhiHongLi YanJunGong DongWu YuHanSun JunWang YiLiu BaozhongDon | 2001 | Beijing Synchrotron Radiation Facility2001，，2： | 0 |
| 7 | Correction of negative deviation from Dedye’s theory显示文摘 | ZHIHONGLI YANJUNGONG DONGWU YUHANSUN ZHIHONGLI YANJUNGONG DONG | 2001 | Beijing Synchrotron Radiation Facility2001，，2： | 0 |
| 8 | Fractals of Silica Aggregates显示文摘Silica aggregates were prepared by base-catalyzed hydrolysis and condensation of alkoxides in alcohol.Polyethylene glycol(PEG) was used as organic modifier.The sols were characterized using Small Angle X-ray Scattering (SAXS) with synchrotron radiation as X-ray source.The structure evolution during the sol-gel process was determined and described in terms of the fractal geometry.As-produced silica aggregates were found to be mass fractals.The fractl dimensions spanned the regime 2.1-2.6 corresponding to more branched and compact structures.Both RLCA and Eden models dominated the kinetic growth under base-catalyzed condition. | ZhinhongLi DongWu Yuhansun JunWang YiLiu BaozhongDong Zhinhong | 2001 | Beijing Synchrotron Radiation Facility2001，，2： | 0 |
| 9 | Processing and Sintering of Agglomerate-free CaO-ZrO2 Powder显示文摘Coprecipitation supercritical fluid drying technology has been employed to synthesize calcia-stabilized zirconia ultrafine powder with low-cost inorganic salts as the starting materials. The sintering behaviors of these powders were also investigated. The results showed that supercritical fluid drying could effectively alleviate the hard agglomeration of grains during the gel drying process, and the morphology of the powder retained the network texture of the original gel.The resulting particles were characterized by small particle size (5~20 nm), better monodispersity and high surface area, which gave rise to high activity and sinterability. Consequently, these powders could readily be compacted into the desired shape and their densification could be carried out in shorter time and at lower temperatures. For instance,nanometer-sized powder calcined at 600℃ for 2 h could be cold-pressed into a green body and sintered at 1100° for 0.5 h to attain a dense body with bulk density of 5.9718 g/cm3 and specific pore volume of 0.0008 cm3/g. | LipingLIANG Shu'eDANG DongWU YuhanSUN | 2004 | Journal of Materials Science & Technology2004，20，4： | 0 |
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