Enhanced sieving of cellulosic microfiber membranes via tuning of interlayer spacing,Environmental Science: Nano

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Enhanced sieving of cellulosic microfiber membranes via tuning of interlayer spacing
Environmental Science: Nano ( IF 5.8 ) Pub Date : 2020-08-13 , DOI: 10.1039/d0en00613k
Zoheb Karim _{1,

2,

3,

4,

5} , Susanna Monti _{6,

7,

8} , Giovanni Barcaro _{7,

8,

9} , Anna Svedberg _{1,

2,

3} , Mohd Ayub Ansari _{10,

11,

12,

13} , Sadaf Afrin _{10,

13,

14,

15,

16}

Affiliation

MoRe Research Örnsköldsvik AB
Örnsköldsvik
Sweden
Institute of Architecture and Civil Engineering
South Ural State University
CNR-ICCOM–Institute of Chemistry of Organometallic Compounds
56124 Pisa
Italy
CNR-IPCF–Institute for Chemical and Physical Processes
Department of Chemistry
Bipin Bihari College
Jhansi
India
Faculty of Chemical Sciences
Aligarh Muslim University
Aligarh 202002

Functionally active membranes made of cellulosic microfibers (CMFs) have emerged as promising sorbents for the removal of nano-sized pollutants from water. The adsorption efficiency of these membranes has been increased through surface functionalization of pristine-CMFs using various chemistries. Still, until now, the produced materials consist of highly dense 2D networks that make the membranes inadequate as filters because of the very short interlayer spacing. Here, we report on novel tuned CMF functionalization procedures, namely carboxylation, phosphorylation, and methylation, that can overcome this problem by modulating the interlayer separation in the 2D membranes. To test our approach, fabricated nanolaminate membranes with grafted functional groups were subjected for the separation of metal ions, a dye and two drugs, and their separation efficiencies are being correlated with the degree of functionalization and tuned intercapillary spacing.

中文翻译：

通过调节层间间距增强纤维素微纤维膜的筛分

由纤维素微纤维（CMF）制成的功能性活性膜已成为一种有望从水中去除纳米级污染物的吸附剂。这些膜的吸附效率已通过使用各种化学方法对原始CMF进行表面功能化而得到了提高。尽管如此，直到现在，所生产的材料仍由高密度的2D网络组成，由于极短的层间间距，使得该膜不足以用作过滤器。在这里，我们报告了新型的调谐CMF功能化程序，即羧化，磷酸化和甲基化，可以通过调节2D膜的层间分离来克服此问题。为了测试我们的方法，对带有接枝官能团的纳米层压膜进行了分离，以分离金属离子，染料和两种药物，

更新日期：2020-10-17

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