文献类型： 外文期刊

作者： Dong, Yangbo ¹ ; Feng, Danyang ² ; Li, Wei ¹ ; Zhang, Rui ¹ ; Dou, Shuzhen ³ ; Wang, Luoqi ¹ ; Yang, Yan ¹ ; Wang, Li ⁴ ; Yang, Yang ⁵ ; Wei, Feng ⁶ ; Qiao, Zhen-An ¹ ;

作者机构： 1.Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Jilin, Peoples R China

2.Northeast Normal Univ, Key Lab Polyoxometalate & Reticular Mat Chem, Minist Educ, Changchun 130024, Jilin, Peoples R China

3.Jiangxi Acad Agr Sci, Nanchang 330000, Jiangxi, Peoples R China

4.Daqing Oilfield Prod Technol Inst, Daqing 163453, Heilongjiang, Peoples R China

5.Jilin Univ, Coll Chem, State Key Lab Supramol Struct & Mat, Changchun 130012, Jilin, Peoples R China

6.First Hosp Jilin Univ, Dept Hepatobiliary & Pancreas Surg, Changchun 130021, Jilin, Peoples R China

期刊名称：NPG ASIA MATERIALS （ 影响因子：9.7； 五年影响因子：10.5 ）

ISSN： 1884-4049

年卷期： 2023 年 15 卷 1 期

页码：

收录情况： SCI

摘要： Gradient porous structures enable the fast capillary-directed mass transport and enhance the chemical reaction rate with optimal efficiency and minimal energy consumption. Rational design and facile synthesis of functional mesoporous materials with sheet structure and gradient mesopores still face challenges of stacked structures and unadjustable pore sizes. Herein, an interfacial co-assembly strategy for gradient mesoporous hollow silica sheets is reported. The modulated oil-water interface allows the assembly of gradient mesoporous silica layers on the water-removable ammonium sulfate crystals. The obtained mesoporous silica layers possess narrow pore size distributions (similar to 2.2 nm and similar to 6.6 nm). Owing to the good mono-dispersity, sheet structure and proper pore size, the designed gradient mesoporous hollow silica sheets can serve as flexible building blocks for fabricating nanoscale molecule filtration device. Experiments reveal that the obtained nanofiltration device shows remarkable gradient rejection rates (range from 23.5 to 99.9%) for molecules with different sizes (range from 1.2 to 4.4 nm).