Surface modification of activated carbon from sago waste

IF 0.7 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of metals, materials and minerals Pub Date : 2023-03-28 DOI:10.55713/jmmm.v33i1.1616
O. Togibasa, K. Dahlan, Y. Ansanay, Alda Filadelfi Runggaweri, Marlifon Merani
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Abstract

In this paper, we analyzed the effect of surface modification on the surface properties of the active carbon from sago waste using varied oxidizers, namely H2O2, HNO3, and H2SO4. The ordinary active carbon has an initial surface area of ​​546.6 m2∙g-1, with a phenol and carboxylic functional group. The porosity, functional groups and morphological surface, together with the chemical composition of activated carbon were examined using a nitrogen adsorption-desorption through the Brunauer Emmett Teller (BET) method and the calculation of Barret-Joyner-Hall (BJH), a Fourier-transformed infrared spectroscopy, and a scanning electron microscopy with energy dispersive spectroscopy. The results found that the modified activated carbon significantly increased surface area and total pore volume. Activated carbon modified using H2SO4 oxidizers has the highest surface area value of 853.6 m2∙g-1 and a total pore volume value of 0.585 cm3∙g-1. In addition, the surface modification has changed carbon's porosity from micropore to mesopore, altered the surface functional group from phenol to ether. The surface modification has improved its adsorption capacity and potentially further its application. In conclusion, modifying the surface could make the properties closer to the standards for commercial activated carbon.
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西米废活性炭的表面改性研究
研究了不同氧化剂H2O2、HNO3和H2SO4对西米废活性炭表面改性的影响。普通活性炭的初始表面积为546.6 m2∙g-1,具有一个苯酚-羧基官能团。采用Brunauer Emmett Teller (BET)法、barrett - joyner - hall (BJH)法、傅里叶变换红外光谱和扫描电镜能谱仪对活性炭的孔隙度、官能团和形态面进行了表征,并对活性炭的化学成分进行了表征。结果表明,改性后的活性炭显著增加了活性炭的比表面积和总孔隙体积。H2SO4氧化剂改性活性炭的比表面积最高,为853.6 m2∙g-1,总孔体积为0.585 cm3∙g-1。此外,表面改性使碳的孔隙率由微孔变为中孔,表面官能团由苯酚变为醚。表面改性提高了其吸附能力,具有进一步推广应用的潜力。综上所述,对活性炭表面进行改性可以使其性能更接近于商用活性炭的标准。
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来源期刊
Journal of metals, materials and minerals
Journal of metals, materials and minerals MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
1.40
自引率
11.10%
发文量
0
期刊介绍: Journal of Metals, Materials and Minerals (JMMM) is a double-blind peer-reviewed international journal published 4 issues per year (starting from 2019), in March, June, September, and December, aims at disseminating advanced knowledge in the fields to academia, professionals and industrialists. JMMM publishes original research articles as well as review articles related to research and development in science, technology and engineering of metals, materials and minerals, including composite & hybrid materials, concrete and cement-based systems, ceramics, glass, refractory, semiconductors, polymeric & polymer-based materials, conventional & technical textiles, nanomaterials, thin films, biomaterials, and functional materials.
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