Efficient and eco-friendly preparation of hydrophilic boron nitride nanosheets for enhanced filtration properties.

IF 2.9 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Yongliang Wang, Chao Zhang, Daozhong Du, Yun Wang, Ruitao Li, Zhenqiang Liu, Kaiwen Yang
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引用次数: 0

Abstract

The exceptional properties of boron nitride nanosheets (BNNSs) render them promising for diverse applications. Nevertheless, the obstacles of effectively readying them and their restricted ability to disperse in liquids are current constraints. In this study, a simple and efficient glucose-assisted mechanochemical exfoliation method was developed to achieve simultaneous exfoliation and functionalization of BNNSs. The BNNSs yield reached 87.5%, featuring grafted hydroxyl groups at the edges and well dispersed in water. Furthermore, the prepared BNNSs were dispersed into water and subsequently incorporated into a nanofiltration membrane using vacuum filtration. The vacuum filtration produced the BNNSs nanofiltration membrane with high water flux and flexibility interception rate due to its excellent dispersibility. The optimal interception rate of the BNNSs filter membrane for a 2 mg•ml-1 Congo red (CR) solution was 96.12%, and the optimal flux of the BNNSs filter membrane for pure water was 1312 L•m-2•h-1•bar-1 according to the experiments. Additionally, the adsorption performance of BNNSs with different functionalized groups (e.g., hydroxyl and amino) for CR and heavy metal ions (copper ions) was studied through density functional theory (DFT) theoretical calculations. This study not only present a highly efficient, environmentally friendly, and cost-effective method for preparing hydrophilic BNNSs to enhance their yield, but also investigated and predicted the interception rate and flux of BNNSs nanofiltration membranes functionalized with different functional groups for water contaminated with metal ions and dyes.

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来源期刊
Nanotechnology
Nanotechnology 工程技术-材料科学:综合
CiteScore
7.10
自引率
5.70%
发文量
820
审稿时长
2.5 months
期刊介绍: The journal aims to publish papers at the forefront of nanoscale science and technology and especially those of an interdisciplinary nature. Here, nanotechnology is taken to include the ability to individually address, control, and modify structures, materials and devices with nanometre precision, and the synthesis of such structures into systems of micro- and macroscopic dimensions such as MEMS based devices. It encompasses the understanding of the fundamental physics, chemistry, biology and technology of nanometre-scale objects and how such objects can be used in the areas of computation, sensors, nanostructured materials and nano-biotechnology.
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