蒙脱石剥离二维纳米片及其功能化应用

白皓宇; 赵云良; 王伟; 张婷婷; 宋少先

doi:10.13779/j.cnki.issn1001-0076.2019.06.015

蒙脱石剥离二维纳米片及其功能化应用

1.
武汉理工大学矿物资源加工与环境湖北省重点实验室，湖北武汉 430070

2.
武汉理工大学资源与环境工程学院，湖北武汉 430070

基金项目:
国家自然科学基金项目（51874220，51904215）

详细信息

作者简介: 白皓宇(1996-), 男, 硕士研究生, E-mail:bhy@whut.edu.cn

通讯作者: 赵云良(1987-), 男, 副教授, 博士生导师, E-mail:zyl286@whut.edu.cn

中图分类号: TD975⁺.5;TB34

收稿日期: 2019-10-17

刊出日期: 2019-12-25

Exfoliating Preparation of Two-dimensional Montmorillonite Nanosheet and the Functional Applications

1.
Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Wuhan 430070, Hubei, China

2.
School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China

More Information

Corresponding author: ZHAO Yunliang, zyl286@whut.edu.cn

Received Date: 17 October 2019

Publish Date: 25 December 2019

摘要

摘要:
蒙脱石作为一类典型的层状黏土矿物具有优异的物理化学特性，可通过剥离分离出具有二维结构特性的高径厚比片层单体。常用的剥离制备二维蒙脱石纳米片的方法有化学法、机械法和化学-机械法，通过剥离处理可使层间结合较弱的蒙脱石片层分离并均匀分散。剥离制备的二维蒙脱石纳米片可用于环境功能材料、储能材料、阻燃材料、纳米流体通道和智能材料等先进矿物功能材料的制备。本文综述了近年来二维蒙脱石纳米片的剥离制备方法及其功能化应用的研究进展，为层状黏土矿物高值化应用和深化研究提供思路。
- 层状黏土 /
- 蒙脱石 /
- 纳米片 /
- 剥离 /
- 二维材料 /
- 矿物功能材料
Abstract:
As a typical type of layered clay mineral, montmorillonite with excellent physicochemical properties can be separated into high-diameter-thickness lamellar monomers with two-dimensional structural characteristics. Common exfoliation methods can be divided into chemical method, mechanical method and chemical-mechanical method. Through the exfoliation process, the montmorillonite flakes with weak interlayer bonding can be separated and uniformly dispersed. The exfoliated nanosheets can be used for the preparation of advanced functional mineral materials such as environmental function materials, energy storage materials, flame retardant materials, nanofluidic channels and smart materials. In this paper, recent advances in the exfoliating preparation and functional applications of two-dimensional montmorillonite nanosheets are reviewed, thereby providing enlightening ideas for the further application and deepening study of layered clay minerals.
- layered clay /
- montmorillonite /
- nanosheet /
- exfoliation /
- two-dimensional material /
- functional mineral material

HTML全文

图 1 (a) 蒙脱石层状晶体结构示意图(b)蒙脱石晶层硅氧四面体和铝氧八面体俯视示意图

Figure 1.

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图 2 蒙脱石层间阳离子种类对超声法剥离制备蒙脱石二维纳米片的影响^[31]

Figure 2.

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图 3 (a) 超声-冷冻解冻法循环剥离蒙脱石示意图；(b)未剥离蒙脱石和超声-冷冻/解冻循环剥离后的蒙脱石XRD图谱^[32]

Figure 3.

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图 4 (a) 蒙脱石二维纳米片与壳聚糖自组装制备水凝胶机理图及(b，c)水凝胶的三维网状结构^[36]

Figure 4.

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图 5 (a) 铁-壳聚糖/蒙脱石自组装凝胶对亚甲蓝的吸附和降解去除率，pH=3；(b)铁-壳聚糖/蒙脱石自组装凝胶循环性能；(c)铁-壳聚糖/蒙脱石自组装凝胶吸附/光芬顿反应协同降解亚甲基蓝机理图^[40]

Figure 5.

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图 6 (a) PVA/SA/CTS-MMTNS凝胶球；(b)冷冻干燥后的PVA/SA/CTS-MMTNS凝胶球；(c)(d)为凝胶球内部多孔结构的SEM形貌图^[41]；(e)CS-MMTNS中空层状球壳制备过程; (f)CS-MMTNS中空层状球壳SEM测试形貌；(g)CS-MMTNS中空球壳TEM测试形貌^[42]

Figure 6.

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图 7 (a) 二维蒙脱石-硬脂酸相变储能材料制备及结构示意图；(b)MtNs-SA的DSC曲线和(c)引入AgNPs后先变材料的DSC曲线；(d)AgNPs分布位置与对应传热路径示意图^[46-48]

Figure 7.

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图 8 (a) FPU和负载蒙脱石后(b)FPU燃烧以及负载蒙脱石FPU燃烧后的(c)表面与(d)截面图；(e)FPU和(f)负载蒙脱石纳米片后的FPU的SEM形貌图；(g)不同厚度蒙脱石层阻燃机理示意图^[51]

Figure 8.

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图 9 (a) 层状有序排列蒙脱石纳米复合材料制备过程示意图；PVA/MMT薄膜在燃烧实验(b)前(c)后的截面SEM图像；PU燃烧后的(d)主视图和(e)俯视图以及负载PVA/MMT的PU燃烧后(f)主视图和(g)俯视图^[52]

Figure 9.

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图 10 (a) 剥离蒙脱石纳米片TEM测试图；(b)CTAB改性蒙脱石纳米片重组装制备的具有二维通道的柔性薄膜(RMM)；(c)RMM截面层状结构SEM测试图；RMM离子传输特性测试：(d)在不同浓度KCl溶液中的Ⅰ-Ⅴ曲线(e)电解质浓度与质子传导效率间的关系；RMM能量转化测试：(f)不同pH条件下歌浓度梯度产生的扩散电流(g)不同浓度梯度(1，10，100)下的Ⅰ-Ⅴ曲线^[62]

Figure 10.

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图 11 (a) 制备的MMT-polyPCDA-APTES薄膜的热变色性质, (b)热变色机理示意图^[69]；(c)蒙脱石-蛭石双层黏土基薄膜(CCBM)；在不同湿度(d)和不同环境温度(e)中CCBM的形变情况；(f)组分形变差异造成双层异质结构发生弯曲机理示意图^[70]

Figure 11.

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