羧酸盐
化学
吸附
氢氧化铵
水热碳化
核化学
吸附
丙烯酸
打赌理论
碳化
解吸
Zeta电位
无机化学
催化作用
亚甲蓝
有机化学
化学工程
纳米颗粒
聚合物
单体
工程类
光催化
作者
Bowen Lv,Huailiang Xu,Jian-Zhong Guo,Liqun Bai,Bing Li
标识
DOI:10.1016/j.jhazmat.2021.126741
摘要
Hydrochar (AAHC) with rich carboxylate groups was prepared by one-step hydrothermal carbonization (HTC) of bamboo and acrylic acid with the presence of ammonium persulphate, and then activated by a sodium hydroxide solution. AAHC was featured by elemental analysis, SEM, XPS, FTIR, Zeta potential analysis and N2 adsorption-desorption isotherms, and applied to test adsorptive ability of methylene blue (MB) by batch sorption experiments. Despite a small Brunauer-Emmett-Teller (BET) surface area of 5.03 m2·g-1, AAHC has excellent MB adsorbing capacity owing to the richness of carboxylate groups. Compared with hydrochar produced without adding ammonium persulphate, AAHC exhibits larger BET surface, pore volume and carboxylate groups, indicating a small amount of ammonium persulfate plays an important role in HTC in addition to the free radical initiator. This work provides a facile and cheap method combining HTC and polymerization for preparation of carboxylate-rich hydrochar.
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