Preparation of moso bamboo columnar activated carbon with high adsorption property via polyacrylamide@asphalt adhesives and steam activation

IF 5.5 3区 材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY Carbon Letters Pub Date : 2024-04-10 DOI:10.1007/s42823-024-00723-3
Huan Liu, Yu Miao, Huayu Tian, Yishan Chen, Enfu Wang, Jingda Huang, Wenbiao Zhang
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Abstract

Moso bamboo, as a kind of renewable functional material, exhibits outstanding development potential. It is promising to prepare activated carbon with good mechanical strength and high specific surface area using moso bamboo as raw material. In this work, we employed a hydraulic extruder to extrude the bamboo charcoal and the adhesive to obtain the moso bamboo activated carbon, and improved the specific surface area of the columnar activated carbon through high-temperature water vapor activation. Through the catalytic role of the water vapor activation process, the formation and expansion of the pores were promoted and the internal pores were greatly increased. The obtained columnar activated carbon shows excellent mechanical strength (93%) and high specific surface area (791.54 m2/g). Polyacrylamide@asphalt is one of the most effective adhesives in the high-temperature water vapor activation. The average pore size (22.99 nm) and pore volume (0.36 cm3/g) of the prepared columnar activated carbon showed a high mesoporous ratio (83%). Based on the excellent pore structure brought by the activation process, the adsorption capacity of iodine (1135.75 mg/g), methylene blue (230 mg/g) and carbon tetrachloride (64.03 mg/g) were greatly improved. The resultant moso bamboo columnar activated carbon with high specific surface area, excellent mechanical properties, and outstanding adsorption capacity possesses a wide range of industrial applications and environmental protection potential.

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通过聚丙烯酰胺@沥青粘合剂和蒸汽活化制备具有高吸附性能的毛竹柱状活性炭
毛竹作为一种可再生功能材料,具有突出的发展潜力。以毛竹为原料制备机械强度高、比表面积大的活性炭具有广阔的前景。在这项工作中,我们采用液压挤压机挤压竹炭和粘合剂,得到了毛竹活性炭,并通过高温水蒸气活化提高了柱状活性炭的比表面积。通过水蒸气活化过程的催化作用,促进了孔隙的形成和扩张,内部孔隙大大增加。得到的柱状活性炭具有优异的机械强度(93%)和高比表面积(791.54 m2/g)。聚丙烯酰胺@沥青是高温水蒸气活化中最有效的粘合剂之一。制备的柱状活性炭的平均孔径(22.99 nm)和孔体积(0.36 cm3/g)显示出较高的介孔率(83%)。基于活化过程带来的优异孔隙结构,碘(1135.75 mg/g)、亚甲基蓝(230 mg/g)和四氯化碳(64.03 mg/g)的吸附容量得到了极大的提高。所制备的毛竹柱状活性炭具有高比表面积、优异的机械性能和出色的吸附能力,具有广泛的工业应用和环保潜力。
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来源期刊
Carbon Letters
Carbon Letters CHEMISTRY, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
7.30
自引率
20.00%
发文量
118
期刊介绍: Carbon Letters aims to be a comprehensive journal with complete coverage of carbon materials and carbon-rich molecules. These materials range from, but are not limited to, diamond and graphite through chars, semicokes, mesophase substances, carbon fibers, carbon nanotubes, graphenes, carbon blacks, activated carbons, pyrolytic carbons, glass-like carbons, etc. Papers on the secondary production of new carbon and composite materials from the above mentioned various carbons are within the scope of the journal. Papers on organic substances, including coals, will be considered only if the research has close relation to the resulting carbon materials. Carbon Letters also seeks to keep abreast of new developments in their specialist fields and to unite in finding alternative energy solutions to current issues such as the greenhouse effect and the depletion of the ozone layer. The renewable energy basics, energy storage and conversion, solar energy, wind energy, water energy, nuclear energy, biomass energy, hydrogen production technology, and other clean energy technologies are also within the scope of the journal. Carbon Letters invites original reports of fundamental research in all branches of the theory and practice of carbon science and technology.
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