Preparation and Corrosive Anion-curing Capability of Layered Double Hydroxide (LDH)/Montmorillonite Composites

被引：2

作者：

Wu, Limei ^{[1
]}

Sun, Mingxi ^{[1
]}

Wang, Xiaolong ^{[2
]}

Lu, Yushen ^{[3
]}

Tang, Ning ^{[1
]}

Gao, Lili ^{[1
]}

Wang, Qing ^{[1
]}

Hu, Ling ^{[4
]}

机构：

[1] Shenyang Jianzhu Univ, Sch Mat Sci & Engn, Shenyang 110168, Peoples R China

[2] Shenyang Jianzhu Univ, Sch Mech Engn, Shenyang 110168, Peoples R China

[3] Chinese Acad Sci, Ctr Ecomat & Green Chem, Key Lab Clay Mineral Appl Res Gansu Prov, Lanzhou Inst Chem Phys, Lanzhou 730000, Peoples R China

[4] Shenyang Jianzhu Univ, Planning & Finance Div, Shenyang 110168, Peoples R China

来源：

CLAYS AND CLAY MINERALS | 2023年 / 71卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Corrosion protection; Inhibitor; Layer double hydroxides; LDH/Mnt composite; Nitrate ions; AQUEOUS-SOLUTION; RAMAN-SPECTROSCOPY; MILD-STEEL; MG-AL; ADSORPTION; HYDROTALCITE; INHIBITOR; NACL; MONTMORILLONITE; SURFACTANTS;

D O I：

10.1007/s42860-023-00252-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The passive film of reinforcing steel in marine concrete is damaged by the infiltration of chloride and sulfate ions. Layered double hydroxide (LDH) can adsorb anions and release interlayer ions to form passive films due to its ion exchange property. A Mg-Al-NO3 layered double hydroxide/montmorillonite (LDH/Mnt) composite inhibitor was prepared by layer-by-layer self-assembly (LBL) of LDH and Mnt. The structure and morphology of the LDH/Mnt composites were characterized by X-ray diffraction (XRD), laser Raman spectroscopy, N2-adsorption/desorption measurements, and transmission electron microscopy (TEM). The LDH/Mnt composites, as inhibitors of chloride ions and sulfate ions, exhibited high slow-release efficiency. The mass ratio of LDH and Mnt affected the curing capacity of the synthesized composites, and the optimum mass ratio was LDH/Mnt = 1:1 for which slow-release efficiency reached 94.16%.

引用

页码：461 / 477

页数：17

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