...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Science >On the investigation of acid and surfactant modification of natural clay for photocatalytic water remediation
【24h】

On the investigation of acid and surfactant modification of natural clay for photocatalytic water remediation

机译：对天然粘土的酸性和表面活性剂改性进行光催化水修复研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this study, a series of mineral and organic acids are introduced to natural clay modification. Several analytical techniques are employed to identify the physical and chemical changes in clay. The effect of surfactants on these properties is also investigated. The samples are prepared using simple acid treatment without filtration. The alteration in surface morphology is proportional to the acid strength as evident from SEM and XRD analyses. Therefore, the treatment with mineral acid and organic acid /HNO3 results in the formation of new layers by surface modification as depicted in SEM images, and a higher degree of suppression in characteristic XRD reflections of clay is noticed. However, the treatment with organic acids modifies the existing interlayer spacing of clay, and therefore, the XRD characteristic reflections of clay are less affected. These observations are also supported by FT-IR analysis. The surface area of modified clay is dependent on the acid strength, composition and size of counter-anion of acid. An increase in surface area and porosity is noticed after surfactant modification of HNO3-treated clay, where the change is more prominent at the concentration higher than their respective critical micelle concentration. Thermal stability is dependent on the chemical composition and surface area of clay materials. A relatively higher absorbance is observed for modified clay materials compared with untreated clay during DRS analysis. The catalytic efficiency of modified clay materials in Eriochrome Black T degradation has been demonstrated.
机译：在该研究中，将一系列矿物质和有机酸引入天然粘土改性。采用几种分析技术鉴定粘土的物理和化学变化。还研究了表面活性剂对这些性质的影响。使用简单的酸处理制备样品而无滤。表面形态的变化与SEM和XRD分析中明显的酸性强度成比例。因此，含有无机酸和有机酸/ HNO3的处理导致通过SEM图像所示的表面改性形成新层，并注意到粘土的特征XRD反射的抑制程度较高。然而，用有机酸的处理改变了粘土的现有层间间距，因此，粘土的XRD特征反射较小。 FT-IR分析也支持这些观察结果。改性粘土的表面积取决于酸的酸强度，组成和酸的反酸的尺寸。在HNO3处理过的粘土的表面活性剂改性后，注意到表面积和孔隙率的增加，其中变化在浓度高于它们各自的临界胶束浓度的浓度更加突出。热稳定性取决于粘土材料的化学成分和表面积。在DRS分析期间，与未处理的粘土相比，对改性粘土材料观察到相对较高的吸光度。已经证明了Eriochrome黑色T降解中改性粘土材料的催化效率。

著录项

  • 来源
    《Journal of Materials Science》 |2018年第14期|共16页
  • 作者

    Soni Vineet Kumar; Roy Toran; Dhara Suman; Choudhary Ganpat; Sharma Pragati R.; Sharma Rakesh K.;

  • 作者单位

    Indian Inst Technol Jodhpur Dept Chem NH-65 Nagaur Rd Jodhpur 342037 Rajasthan India;

    Indian Inst Technol Jodhpur Dept Chem NH-65 Nagaur Rd Jodhpur 342037 Rajasthan India;

    Indian Inst Technol Jodhpur Dept Chem NH-65 Nagaur Rd Jodhpur 342037 Rajasthan India;

    Indian Inst Technol Jodhpur Dept Chem NH-65 Nagaur Rd Jodhpur 342037 Rajasthan India;

    Indian Inst Technol Jodhpur Dept Chem NH-65 Nagaur Rd Jodhpur 342037 Rajasthan India;

    Indian Inst Technol Jodhpur Dept Chem NH-65 Nagaur Rd Jodhpur 342037 Rajasthan India;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号