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Graphene-oxide loading on natural zeolite particles for enhancement of adsorption properties

机译:用于增强吸附性质的天然沸石颗粒上的石墨烯氧化物负载

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摘要

Multiple methods of grafting graphene oxide (GO) nanosheets to natural clinoptilolite-rich zeolite particles were developed in our laboratory. In this study, we have systematically characterized the GO coated particles prepared by various methods to select the most promising method for further research efforts. This study revealed that the most promising coating method was the clean-acid-treated zeolite particles followed by deposition of GO nanosheets onto the zeolite surface and mild thermal treatment of the particles. GO and its synergistic interaction in zeolite was attributed to electrostatic interactions, hydrophobic interactions and hydrogen bonds. Hydrophobic interactions are enhanced both due to dealumination of zeolite caused by the cleaning method followed by acid treatment and due to partial thermal deoxygenation of GO. This method provided a ten times larger surface area (from 10.55 m(2) g(-1) to 117.96 m(2) g(-1)) and three times smaller pore diameter (from 81.91 angstrom to 30.68 angstrom), providing great particles for a variety of applications as adsorbents or catalysts.
机译:在我们的实验室中开发了多种嫁接石墨烯氧化物(GO)富含富含血硫石沸石颗粒的方法。在这项研究中,我们系统地表征了通过各种方法制备的去涂层颗粒,以选择最有希望的方法,以便进一步研究努力。该研究表明,最有前途的涂布方法是清洁酸处理的沸石颗粒,然后沉积Go纳米片沉积到沸石表面上并对颗粒的温和热处理。沸石中的协同相互作用归因于静电相互作用,疏水相互作用和氢键。由于由清洁方法引起的沸石的洪水,并且由于酸处理而导致的沸石渗透,并且由于部分热脱氧而导致疏水相互作用。该方法提供了10倍的表面积(从10.55M(2)G(-1)至117.96μm(2)g(-1))和孔径三倍(从81.91埃至30.68埃),提供了伟大的用于各种应用作为吸附剂或催化剂的颗粒。

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  • 来源
    《RSC Advances》 |2020年第8期|共9页
  • 作者单位

    Univ Wisconsin Water Technol Accelerator WaTA 247 W Freshwater Way Milwaukee WI 53204 USA;

    Univ Wisconsin Water Technol Accelerator WaTA 247 W Freshwater Way Milwaukee WI 53204 USA;

    Univ Wisconsin Dept Phys Mitchell Hall 251 Milwaukee WI 53201 USA;

    Univ Wisconsin Dept Phys Mitchell Hall 251 Milwaukee WI 53201 USA;

    Univ Wisconsin Water Technol Accelerator WaTA 247 W Freshwater Way Milwaukee WI 53204 USA;

    Univ Wisconsin Water Technol Accelerator WaTA 247 W Freshwater Way Milwaukee WI 53204 USA;

    Univ Wisconsin Water Technol Accelerator WaTA 247 W Freshwater Way Milwaukee WI 53204 USA;

    Univ Wisconsin Water Technol Accelerator WaTA 247 W Freshwater Way Milwaukee WI 53204 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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