Factors | Influence | ref |
---|---|---|
Template (CPB etc) | Template with different alkyl chain lengths can adjust the particle size of DFNS; Increasing the amount of template can hinder the nucleation reaction at the initial stage and thus reduce the particle size; The molar ratio of the template and silicon can affect the particle size and the shape of the pore wall, but there is no specific research conclusion on the influence trend. | 31, 33~36 |
Silicon hydrolyzer (urea etc) | Urea is used to hydrolyze silicon reagent, which can be hydrolyzed at room temperature. Before heating reaction, the more urea content, the longer stirring time, the more nucleated particles and the smaller DFNS particle size. | 34 |
Auxiliary organic solvent (pentanol etc) | Increasing the alkyl chain length of the auxiliary organic solvent can increase the fold spacing.Reducing its dosage can increase homogeneity, reduce particle size and fold interval.The use of alcohols of different polarity, such as n-propanol and n-octanol, can regulate particle size. | 34, 37, 38 |
Organic solvent (cyclohexane etc) | As the amount of organic solvent increases, the particle size decreases, the homogeneity of particles and the pore size increase, and the channel form finally becomes folded. As the polarity of solvent increases, the particle size first increases and then decreases. | 33, 34, 37, 39 |
Silicon original reagent (TEOS etc) | As the amount of silicon reagent increases, the fiber density increases, the specific surface area and the particle size decreases. | 36, 39, 40 |
Stir speed during growing period | With the increase of stirring speed, the particle size becomes smaller and the pore size becomes larger. | 41 |
Growth reaction temperature | With the increase of reaction temperature,the homogeneity of particles and the particle size increase, the fiber density, the specific surface area, the pore capacity and the pore diameter decrease. | 34, 41 |
Growth reaction time | With the increase of reaction time, the homogeneity of particles, the particle size, the fiber density and the pore size all decreased. | 34, 37~39 |