Three-dimensional lignin-based polyporous carbon@polypyrrole for efficient removal of reactive blue 19: A synergistic effect of the N and O groups

被引：10

作者：

Liang, Hongxu ^{[1
]}

Zhao, Xinkun ^{[2
]}

Li, Ning ^{[3
]}

Zhang, Hongwei ^{[1
]}

Geng, Zengchao ^{[1
]}

She, Diao ^{[4
,5
]}

机构：

[1] Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Peoples R China

[2] Shandong Normal Univ, Coll Geog & Environm, Jinan 250300, Peoples R China

[3] Guodian Yinhe Water Co LTD, Qingdao 266071, Peoples R China

[4] Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess Pl, Yangling 712100, Peoples R China

[5] CAS & MWR, Inst Soil & Water Conservat, Yangling 712100, Peoples R China

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2023年 / 239卷

关键词：

Reactive blue 19; Polypyrrole; Adsorption; AQUEOUS-SOLUTION; METHYLENE-BLUE; ACTIVE-SITES; ADSORPTION; WASTE; EQUILIBRIUM; DYES; ISOTHERM; PERFORMANCE; ADSORBENT;

D O I：

10.1016/j.ijbiomac.2023.124220

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Reactive blue 19 is one of the abundant carcinogens commonly used in industrial applications. This study transformed industrial lignin into a lignin-based polyporous carbon@polypyrrole (LPC@PPy) by a hydrothermal-activation-in situ polymerization strategy for removal of reactive blue 19. The hydrothermal reaction and pol-ypyrrole polymerization provide abundant O and N groups, and the pore-making process promotes the even distribution of O and N groups in the 3D pore of LPC@PPy, which is favorable for the adsorption of reactive blue 19. The adsorption capacity of LPC@PPy for reactive blue 19 is 537.52 mg g(-1), which is 2.04 times the per-formance of LPC (only hydrothermal and activation process, only have O groups) and 3.36 times that of LC (direct lignin activation, lack of O and N groups). After 8 cycles, LPC@PPy still maintained a high adsorption capacity of 92.14 % for reactive blue 19. In addition, this study found that N and O groups in the material played an important role in adsorption, mainly pyridinic-N, C-OH, -COOR, -C-O- and C--C. This work provides a new strategy for the removal of reactive blue 19 and determines the groups that mainly interact with reactive blue 19, which provides a new reference for adsorption, catalysis and related fields.

引用

页数：9