Facile preparation of oxygen-rich activated carbon from petroleum coke for enhancing methylene blue adsorption
Facile preparation of oxygen-rich activated carbon from petroleum coke for enhancing methylene blue adsorption
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石油焦简易制备富氧活性炭增强亚甲基蓝吸附
DOI：
10.1007/s42823-020-00134-0
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发表时间：
2020-03
期刊：
影响因子：
4.5
通讯作者：
Xuanke Li
中科院分区：
文献类型：
--
作者：
Wei Wu;Xiaxiang Zhang;Jianxiao Yang;Jun Li;Xuanke Li
以石油焦为原料，采用KOH快速活化法制备富氧活性炭。研究了不同升温速率下制备的活性炭的孔隙率和表面化学性质，并考察了其对亚甲基蓝的吸附性能。结果表明，升温速率为5 °C min− 1时制得的活性炭5比活性炭10、活性炭15和活性炭20具有最大的比表面积，升温速率为20 °C min− 1时制得的活性炭20比其他活性炭氧含量最高，-OH官能团最多。这表明快速升温不利于多孔结构的形成，但有利于含氧官能团的生成。对于MB吸附，AC 15由于2803 m2 g − 1的高表面积和23.27%的高氧含量而表现出884 mg g− 1的MB最大吸附容量。此外，尽管事实上AC 20具有比AC 5低得多的表面积，但AC 20显示出比AC 5更高的MB吸附容量。这是因为AC 20具有最高含量的-OH，这是对MB吸附的积极推动。因此，快速升温是制备富氧活性炭提高亚甲基蓝吸附性能的有效途径。
The oxygen-rich activated carbon (AC) was facilely developed using petroleum coke as a raw material by KOH activation under the rapid heating rate. The porosity and surface chemistry of ACs prepared under different heating rates were characterized and their adsorption properties for methylene blue (MB) were investigated. The results showed that the AC5 prepared under the heating rate of 5 °C min−1had the highest surface area compared with the AC10, AC15 or AC20, while the AC20 prepared under the heating rate of 20 °C min−1consisted of the highest oxygen content and most –OH functional group compares with the other ACs. These indicated that rapid heating rate was against the formation of more developed porosity, however, it was beneficial to producing more oxygen functional groups. As to MB adsorption, AC15 exhibited the maximum adsorption capacity for MB of 884 mg g−1due to high surface area of 2803 m2g−1and high oxygen content of 23.27%. Moreover, despite the fact that AC20 had much lower surface area than the AC5, the AC20 showed higher MB adsorption capacity than the AC5. This was because the AC20 has the highest content of –OH, which was a positive impetus for MB adsorption. Therefore, rapid heating rate was an effective and simple approach to preparing the oxygen-rich ACs for improving the adsorption capacity of MB.
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影响因子：
10.9
作者：
Lu, CL;Xu, SP;Liu, CH
通讯作者：
Liu, CH
影响因子：
6.1
作者：
S. B. Hartono;S. Ismadji;Y. Sudaryanto;W. Irawaty
通讯作者：
S. B. Hartono;S. Ismadji;Y. Sudaryanto;W. Irawaty
影响因子：
3.1
作者：
Li, Min;Li, Wei;Liu, Shouxin
通讯作者：
Liu, Shouxin
羧酸羟基对TiO2吸附酸性红G和亚甲蓝的影响
影响因子：
15.1
作者：
Feng, Jiangtao;Zhu, Jinwei;Yan, Wei
通讯作者：
Yan, Wei
DOI：
10.1021/i160018a011
发表时间：
1966-01-01
期刊：
INDUSTRIAL & ENGINEERING CHEMISTRY FUNDAMENTALS
影响因子：
--
作者：
HALL, KR;EAGLETON, LC;VERMEULEN, T
通讯作者：
VERMEULEN, T