Capabilities of Novel Carbon Nano Adsorbents in Evaluating the Extraction of 2-Nitrophenol and Heavy Metal from Aqueous Solutions

Hamza A. Asmaly, N. Kabbashi, M. Al-Khatib, Md Zahangir Alam, Mohamed Abdelgader Ahmed Yassin
{"title":"Capabilities of Novel Carbon Nano Adsorbents in Evaluating the Extraction of 2-Nitrophenol and Heavy Metal from Aqueous Solutions","authors":"Hamza A. Asmaly, N. Kabbashi, M. Al-Khatib, Md Zahangir Alam, Mohamed Abdelgader Ahmed Yassin","doi":"10.51526/kbes.2023.4.3.35-50","DOIUrl":null,"url":null,"abstract":"This study primarily focused on evaluating the efficacy of Metal Oxide-infused Carbon Nano Adsorbents (CNAs), which included both Carbon Nanotubes and Carbon Nanofibers, in removing Cd+2, Cr+3, and 2-NP from water solutions. We synthesized and analyzed four distinct types of CNAs, each impregnated with either Al2O3, TiO2, Fe2O3, or Cu2O3. The metal content in these CNAs was determined by comparing their dry and calcined weights. To investigate their properties, we utilized various techniques such as Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area analysis, Energy-Dispersive X-ray Spectroscopy (EDX), and Thermal Gravimetric Analysis (TGA). These methods helped us understand their morphological traits, surface areas, pore structures, metal oxide distributions, and thermal stabilities, thereby confirming their adsorption effectiveness for pollutants. The findings indicated that CNAs altered with metal oxides showed higher surface areas and adsorption abilities than their unmodified counterparts. Specifically, CNAs/TiO2 exhibited the most significant increase in surface area (140 m2/g) and pore volume (0.460 cm3/g), which resulted in an enhanced adsorption capacity for Cd+3 at 11.4 (mg/g), surpassing the 9.5 (mg/g) capacity of pure CNAs with surface area (90 m2/g) and Pore volume (0.331 cm3/g). Similarly, CNAs/Al2O3 demonstrated an increased surface area of 100 (m2/g), surpassing that of pure CNAs. This enhancement led to a significant improvement in adsorption capacities, elevating the uptake for Cr+3 from 32.2 to 52 (mg/g) and for 2-NP from 24.8 to 49.6 (mg/g). This enhancement in adsorption efficiency is attributed to the increased surface area and improved surface chemistry due to the incorporation of Titania and Alumina, which proved more effective than modifications with copper oxide and Ferric oxide. These insights emphasize the significance of selecting appropriate metal oxides for modifying CNAs, as this can greatly impact their ability to target various contaminants, thus contributing to the development of more advanced water purification methods using CNAs/MO.","PeriodicalId":254108,"journal":{"name":"Knowledge-Based Engineering and Sciences","volume":"101 39","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Knowledge-Based Engineering and Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.51526/kbes.2023.4.3.35-50","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

This study primarily focused on evaluating the efficacy of Metal Oxide-infused Carbon Nano Adsorbents (CNAs), which included both Carbon Nanotubes and Carbon Nanofibers, in removing Cd+2, Cr+3, and 2-NP from water solutions. We synthesized and analyzed four distinct types of CNAs, each impregnated with either Al2O3, TiO2, Fe2O3, or Cu2O3. The metal content in these CNAs was determined by comparing their dry and calcined weights. To investigate their properties, we utilized various techniques such as Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area analysis, Energy-Dispersive X-ray Spectroscopy (EDX), and Thermal Gravimetric Analysis (TGA). These methods helped us understand their morphological traits, surface areas, pore structures, metal oxide distributions, and thermal stabilities, thereby confirming their adsorption effectiveness for pollutants. The findings indicated that CNAs altered with metal oxides showed higher surface areas and adsorption abilities than their unmodified counterparts. Specifically, CNAs/TiO2 exhibited the most significant increase in surface area (140 m2/g) and pore volume (0.460 cm3/g), which resulted in an enhanced adsorption capacity for Cd+3 at 11.4 (mg/g), surpassing the 9.5 (mg/g) capacity of pure CNAs with surface area (90 m2/g) and Pore volume (0.331 cm3/g). Similarly, CNAs/Al2O3 demonstrated an increased surface area of 100 (m2/g), surpassing that of pure CNAs. This enhancement led to a significant improvement in adsorption capacities, elevating the uptake for Cr+3 from 32.2 to 52 (mg/g) and for 2-NP from 24.8 to 49.6 (mg/g). This enhancement in adsorption efficiency is attributed to the increased surface area and improved surface chemistry due to the incorporation of Titania and Alumina, which proved more effective than modifications with copper oxide and Ferric oxide. These insights emphasize the significance of selecting appropriate metal oxides for modifying CNAs, as this can greatly impact their ability to target various contaminants, thus contributing to the development of more advanced water purification methods using CNAs/MO.
新型碳纳米吸附剂在评估从水溶液中萃取 2-硝基苯酚和重金属方面的能力
本研究主要侧重于评估注入金属氧化物的碳纳米吸附剂(CNA)(包括碳纳米管和碳纳米纤维)在去除水溶液中的镉+2、铬+3 和 2-NP 方面的功效。我们合成并分析了四种不同类型的 CNA,每种都浸渍了 Al2O3、TiO2、Fe2O3 或 Cu2O3。这些 CNA 中的金属含量是通过比较其干燥重量和煅烧重量确定的。为了研究它们的特性,我们采用了各种技术,如扫描电子显微镜(SEM)、X 射线衍射(XRD)、布鲁诺-艾美特-泰勒(BET)表面积分析、能量色散 X 射线光谱(EDX)和热重力分析(TGA)。这些方法有助于我们了解它们的形态特征、表面积、孔隙结构、金属氧化物分布和热稳定性,从而确认它们对污染物的吸附效果。研究结果表明,使用金属氧化物改性的 CNA 比未改性的 CNA 具有更高的表面积和吸附能力。具体而言,CNAs/TiO2 的比表面积(140 m2/g)和孔体积(0.460 cm3/g)的增加最为显著,从而提高了对 Cd+3 的吸附能力,达到 11.4(mg/g),超过了比表面积(90 m2/g)和孔体积(0.331 cm3/g)均为 9.5(mg/g)的纯 CNAs。同样,CNAs/Al2O3 的表面积增加到 100(m2/g),超过了纯 CNAs。这种增强显著提高了吸附能力,对 Cr+3 的吸附从 32.2 毫克/克提高到 52 毫克/克,对 2-NP 的吸附从 24.8 毫克/克提高到 49.6 毫克/克。吸附效率的提高归因于二氧化钛和氧化铝的加入增加了表面积并改善了表面化学性质,这比氧化铜和氧化铁的改性更为有效。这些见解强调了选择适当的金属氧化物对 CNA 进行改性的重要性,因为这会极大地影响它们针对各种污染物的能力,从而有助于开发使用 CNA/MO 的更先进的水净化方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信