A TiO 2 nanocomposite hydrogel for Hydroponic plants in efficient water improvement

A TiO 2 nanocomposite hydrogel for Hydroponic plants in efficient water improvement
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用于水培植物的 TiO 2 纳米复合水凝胶可有效改善水质

DOI:
10.1016/j.matchemphys.2018.05.042
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发表时间:
2018-08
影响因子:
4.6
通讯作者:
王晟
王晟
中科院分区:
材料科学3区
文献类型:
--
作者:
王騊;代志鹏;王晟

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二氧化钛纳米颗粒(TiO2NPs)在广泛领域的使用日益增加,引起了人们对其潜在环境影响的关注。在这项工作中,选择了防污材料丙烯酰胺(AM)和丙烯酸(AA)来构建TiO2NPs的载体,通过简单的单锅紫外线诱导自由基聚合形成功能纳米复合水凝胶。所构建的机械强度强的纳米复合水凝胶具有综合光催化、抗菌和自愈功能。最后,以水培植物绿豆(Epipremnumaureum)为研究对象,研究了纳米复合凝胶对日光照射(室内,无阳光直射)后水质的影响。与参考样品体系的快速劣化相反,光催化处理体系中TOC浓度较低表明tio2光催化氧化效率高,从而降低了无土体系对环境的影响。具有综合功能的高强度水凝胶有望作为一种太阳光照下的水处理策略得到广泛应用。
The increasing use of titanium dioxide nanoparticles (TiO2NPs) in a wide range of fields raises concerns about their potential environmental impact. In this work, the antifouling materials acrylamide (AM) and acrylic acid (AA) were selected to construct a support for TiO2NPs to form a functional nanocomposite hydrogel through simple one-pot UV-induced free-radical polymerisation. The constructed mechanically strong nanocomposite hydrogel showed integrated photocatalytic, antibacterial, and self-healing functions. Finally, pothos (Epipremnumaureum) was used as a model hydroponic plant to investigate the effect of the nanocomposite gels on the water quality after irradiation with solar light (indoor, no direct sunlight). In contrast to the rapid deterioration of the reference sample system, the lower TOC concentration in the photocatalytically treated system shows that the efficient oxidation of TiO2photocatalysis, which lowers the environmental impact of soil-less system. The high strength hydrogel with integrated functions is expected to be applied readily as a water treatment strategy under solar light irradiation.
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