Fluorescent starch-based hydrogel with cellulose nanofibrils and carbon dots for simultaneous adsorption and detection of Pb(II)

被引：25

作者：

Zhang, Zhixu ^{[1
,2
]}

Huang, Zhengwu

Qin, Dan ^{[3
]}

Liu, Dongbo ^{[1
,2
]}

Guo, Xin ^{[4
]}

Lin, Haiyan ^{[5
]}

机构：

[1] State Key Lab Subhlth Intervent Technol, Changsha 410128, Hunan, Peoples R China

[2] Hunan Agr Univ, Coll Hort, Changsha 410128, Hunan, Peoples R China

[3] Hunan Agr Univ, Coll Food Sci & Technol, Changsha 410128, Hunan, Peoples R China

[4] Cent South Univ Forestry & Technol, Coll Sci, Changsha 410004, Hunan, Peoples R China

[5] Natl Res Ctr Engn Technol Utilizat Ingredients Bot, Changsha 410128, Hunan, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2024年 / 323卷

关键词：

Starch; Carbon dots; Adsorption; Pb(II); HEAVY-METAL REMOVAL; FIXED-BED PROCESS; HIGHLY EFFICIENT; GRAPHENE OXIDE; ADSORBENT; FABRICATION; NI(II); CU(II);

D O I：

10.1016/j.carbpol.2023.121427

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The adsorption removal of lead (Pb) ions has become a crucial area of research due to the potential health hazards associated with Pb contamination. Developing cost-effective adsorbents for the removal of Pb(II) ions is significantly important. Hence, a novel fluorescent starch-based hydrogel (FSH) using starch (ST), cellulose nanofibrils (CN), and carbon dots (CD) was fabricated for simultaneous adsorption and detection of Pb(II). A comprehensive characterization of FSH, including its morphological features, chemical composition, and fluorescence characteristics, was conducted. Notably, FSH exhibited a maximum theoretical adsorption capacity of 265.9 mg/g, which was 13.0 times higher than that of pure ST. Moreover, FSH was employed as a fluorescent sensor for Pb(II) determination, achieving a limit of detection (LOD) of 0.06 mu g/L. An analysis was further performed to investigate the adsorption and detection mechanisms of Pb(II) utilizing FSH. This study provides valuable insights into the production of a novel cost-effective ST-based adsorbent for the removal of Pb(II) ions.

引用

页数：10