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首页> 外文期刊>RSC Advances >A nanocomposite paper comprising calcium silicate hydrate nanosheets and cellulose nanofibers for high-performance water purification
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A nanocomposite paper comprising calcium silicate hydrate nanosheets and cellulose nanofibers for high-performance water purification

机译：一种纳米复合纸，其包含硅酸钙水合物纳米片和纤维素纳米纤维，用于高性能水净化

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Removal of soluble organic and inorganic contaminants from wastewater to produce clean water has received much attention recently. However, the simultaneous enhancement of water permeability and removal efficiency is still a challenge for filtration membranes. Here, we present a new kind of nanocomposite paper (CSH/CNF) consisting of calcium silicate hydrate (CSH) nanosheets and cellulose nanofibers (CNFs), and demonstrate the rapid water filtration and highly efficient contaminant ( e.g. , dyes, proteins, and metal ions) adsorption properties. The CNFs can serve as the bridging material to connect the CSH nanosheets to form a porous network structure and vital channels in the CSH/CNF paper for rapid water transportation. The weight ratio of CSH nanosheets in the paper is up to 75–85%. The weight ratio of CSH nanosheets has a significant effect on the water permeability and removal efficiency. The water permeability of the CSH/CNF paper with 82.5 wt% CSH nanosheets reaches as high as 312.7 L m ~(?2) h ~(?1) bar ~(?1) , which is about 14.7 times that of the CSH/CNF paper with 75 wt% CSH nanosheets. Because of the high specific surface area and abundant adsorption sites of CSH nanosheets, the CSH/CNF paper with 82.5 wt% CSH nanosheets exhibits high adsorption capacities and removal efficiencies for methyl blue (242.6 mg g ~(?1) , 97.3%), bovine serum albumin (289.2 mg g ~(?1) , 98.5%) and Pb ~(2+) ions (366.2 mg g ~(?1) , 98.2%). The CSH/CNF nanocomposite paper holds great potential for application in environmental wastewater purification.
机译：从废水中除去可溶性有机和无机污染物以产生清洁水最近受到了很多关注。然而，同时增强水渗透性和去除效率仍然是过滤膜的挑战。在这里，我们介绍了一种由硅酸钙水合物（CSH）纳米片和纤维素纳米纤维（CNF）组成的新种类纳米复合材料纸（CSH / CNF），并证明了快速的水过滤和高效污染物（例如，染料，蛋白质和金属离子）吸附性能。 CNFS可以用作连接CSH纳米片的桥接材料，以在CSH / CNF纸中形成多孔网络结构和重要通道，用于快速水运输。纸张中CSH纳米片的重量比高达75-85％。 CSH纳米片的重量比对水渗透性和去除效率具有显着影响。 CSH / CNF纸的水渗透率为82.5wt％CSH纳米片达到312.7 L m〜（Δ2）H〜（？1）条〜（？1），这是CSH /的约14.7倍）。用75wt％CSH纳米片的CNF纸。由于高比表面积和CSH纳米片的丰富吸附位点，具有82.5wt％CSH纳米片的CSH / CNF纸具有高吸附能力和用于甲基蓝的去除效率（242.6mg g〜（α1），97.3％），牛血清白蛋白（289.2mg g〜（α1），98.5％）和Pb〜（2+）离子（366.2mg g〜（α1），98.2％）。 CSH / CNF纳米复合材料纸具有巨大的应用在环境废水净化中的潜力。

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