Polypropylene fiber grafted calcium alginate with mesoporous silica for adsorption of Bisphenol A and Pb2+

被引：17

作者：

Xu, Lijing ^{[1
,2
]}

Bai, Tian ^{[1
,2
]}

Yi, Xinzhun ^{[2
]}

Zhao, Kongyin ^{[1
,2
]}

Shi, Wenxiong ^{[3
]}

Dai, Fengying ^{[1
]}

Wei, Junfu ^{[1
]}

Wang, Jie ^{[1
]}

Shi, Ce ^{[4
]}

机构：

[1] Tiangong Univ, State Key Lab Separat Membranes & Membrane Proc, Tianjin 300387, Peoples R China

[2] Tiangong Univ, Sch Mat Sci & Engn, Tianjin 300387, Peoples R China

[3] Tianjin Univ Technol, Inst New Energy Mat & Low Carbon Technol, Tianjin 300387, Peoples R China

[4] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 300387, Peoples R China

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2023年 / 238卷

基金：

中国国家自然科学基金;

关键词：

Calcium alginate; Mesoporous SiO2; Bisphenol A and Pb2+adsorption; Nanorod structure; Adsorption mechanism; IRON-OXIDE NANOPARTICLES; SELECTIVE ADSORPTION; AQUEOUS-SOLUTIONS; REMOVAL; ADSORBENT; WATER; EFFICIENT; NONYLPHENOLS; LEAD; DYES;

D O I：

10.1016/j.ijbiomac.2023.124131

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：

Polypropylene grafted calcium alginate with mesoporous silica (PP-g-CaAlg@SiO2) for adsorbing Bisphenol A (BPA) and Pb2+ was prepared by calcium chloride (CaCl2) crosslinking and hydrochloric acid solution treatment. The PP-g-CaAlg@SiO2 was characterized by SEM, TEM, BET, XRD, FTIR and TG. PP-g-CaAlg@SiO2 exhibited excellent adsorption capacity for BPA and Pb2+, because the formation of reticulated nanorod structure increased its specific surface area. Subsequently, the adsorption behaviours of BPA and Pb2+, including adsorption iso-therms and adsorption kinetics, were investigated. Afterward, isothermal titration calorimetry (ITC) and mo-lecular dynamics (MD) simulation were performed to explore the adsorption mechanism. The results indicated that hydrogen bonding played the leading role in the adsorption of BPA, while the bonding of Pb2+ to carboxyl group binding sites was the focus of Pb2+ adsorption. In addition, the adsorption capacity of PP-g-CaAlg@SiO2 was stable over 10 cycles.

引用

页数：10

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