Inorganic Chemicals Industry >

2025 , Vol. 57 >Issue 8: 74 - 81

DOI: https://doi.org/10.19964/j.issn.1006-4990.2024-0477

Research & Development

Study on preparation of NO2- modified hydrotalcite and its corrosion resistance to steel bars

  • WANG Zhigang ,
  • HU Xiaodong ,
  • WANG Hui ,
  • XUE Lianggang ,
  • TIAN Jianqiang
Expand
  • 1.Gansu Mechanization Construction Engineering Co. ，Ltd. ，Lanzhou 730060，China
    2.School of Civil Engineering，Lanzhou Jiaotong University，Lanzhou 730070，China
    3.College of Civil Engineering and Architecture，Zhejiang University，Hangzhou 310058，China

Received date: 2024-08-30

  Online published: 2024-09-12

Fold

Abstract

In this study，NO2- intercalated Zn-Al-LDHs（LDHs-NO2） were innovatively prepared by hydrothermal method to solve the problem of insufficient timeliness and environmental risk of traditional calcium nitrite corrosion inhibitors.The stability of LDHs-NO2 in simulated concrete pore solution（SCP），chloride ion adsorption performance and corrosion resistance of steel bars were systematically investigated by electrochemical impedance spectroscopy and ion chromatography.The results showed that the stability of LDHs-NO2 was significantly pH-dependent.It maintained good stability in the range of pH 7.0~13.0，while it was easy to dissolve in strong alkali（pH>13.0） or acidic（pH<7.0） conditions.In addition，LDHs-NO2 exhibited excellent chloride ion adsorption performance due to its unique interlayer ion exchange mechanism.The theoretical maximum adsorption capacity of LDHs-NO2 was 16.71 mmol/g，which significantly reduced the erosion risk of corrosive chloride ions on steel bars.Electrochemical tests confirmed that when the addition amount of LDHs-NO2 was 0.5% in SCP solution，the critical chloride ion concentration threshold of the steel bar was significantly increased from 0.02 mol/L to 0.10 mol/L.This study not only provided an innovative solution to overcome the technical bottleneck of traditional rust-resistant materials，but also laid a theoretical foundation for the development of environmentally friendly，long-term and stable new rust-resistant materials.It had important scientific value and application prospects for promoting green and sustainable development in the field of civil engineering.

Key words： hydrotalcite; inhibition mechanism; stability; steel corrosion; chloride ion adsorption

Cite this article

WANG Zhigang , HU Xiaodong , WANG Hui , XUE Lianggang , TIAN Jianqiang . Study on preparation of NO2- modified hydrotalcite and its corrosion resistance to steel bars[J]. Inorganic Chemicals Industry, 2025 , 57(8) : 74 -81 . DOI: 10.19964/j.issn.1006-4990.2024-0477

References

[1] 郭群，李晓珍，宋屹林，等.钢筋阻锈剂在碳化钢筋混凝土中的阻锈作用［J］.建筑材料学报，2023，26（1）：21-28.
  GUO Qun， LI Xiaozhen， SONG Yilin，et al.Effect of steel bar corrosion inhibitors in carbonated reinforced concrete［J］.Journal of Building Materials，2023，26（1）：21-28.
[2] LI Chenzhi， JIANG Linhua， LI Shanshan.Effect of limestone powder addition on threshold chloride concentration for steel corrosion in reinforced concrete［J］.Cement and Concrete Research，2020，131：106018.
[3] 李珂珂，薛江伟，王露威，等.镁铝水滑石对高铁低钙硅酸盐水泥性能的影响［J］.无机盐工业，2024，56（4）：57-63.
  LI Keke， XUE Jiangwei， WANG Luwei，et al.Effect of MgAl-layered double hydroxides on properties of high-iron low-calcium Portland cement［J］.Inorganic Chemicals Industry，2024，56（4）：57-63.
[4] ZHANG Yuguo， SUN Congtao， ZHANG Peng，et al.Chloride binding of monosulfate hydrate（AFm） and its effect on steel corrosion in simulated concrete pore solution［J］.Journal of Building Engineering，2023，67：105945.
[5] 左义兵，廖宜顺，叶光.盐耦合侵蚀下碱矿渣水泥相演变的热力学模拟［J］.建筑材料学报，2023，26（1）：7-13.
  ZUO Yibing， LIAO Yishun， YE Guang.Thermodynamic modelling of phase evolution in alkali-activated slag cement upon combined attack of salts［J］.Journal of Building Materials，2023，26（1）：7-13.
[6] CAO Yanhui， DONG Shigang， ZHENG Dajiang，et al.Multifunctional inhibition based on layered double hydroxides to comprehensively control corrosion of carbon steel in concrete［J］.Corrosion Science，2017，126：166-179.
[7] ZUO Jiandong， WU Bo， LUO Chaoyun，et al.Preparation of MgAl layered double hydroxides intercalated with nitrite ions and corrosion protection of steel bars in simulated carbonated concrete pore solution［J］.Corrosion Science，2019，152：120-129.
[8] XU Jinxia， SONG Yingbin， ZHAO Yihan，et al.Chloride removal and corrosion inhibitions of nitrate，nitrite-intercalated MgAl layered double hydroxides on steel in saturated calcium hydroxide solution［J］.Applied Clay Science，2018，163：129-136.
[9] KE Xinyuan， BERNAL S A， PROVIS J L.Uptake of chloride and carbonate by Mg-Al and Ca-Al layered double hydroxides in simulated pore solutions of alkali-activated slag cement［J］.Cement and Concrete Research，2017，100：1-13.
[10] YANG Zhengxian， FISCHER H， POLDER R.Laboratory investigation of the influence of two types of modified hydrotalcites on chloride ingress into cement mortar［J］.Cement and Concrete Composites，2015，58：105-113.
[11] WEI Jiafeng， XU Jinxia， MEI Youjing，et al.Chloride adsorption on aminobenzoate intercalated layered double hydroxides：Kinetic，thermodynamic and equilibrium studies［J］.Applied Clay Science，2020，187：105495.
[12] CHEN Yuxuan， SHUI Zhonghe， CHEN Wei，et al.Chloride binding of synthetic Ca-Al-NO3 LDHs in hardened cement paste［J］.Construction and Building Materials，2015，93：1051-1058.
[13] YANG Zhengxian， FISCHER H， POLDER R.Synthesis and characterization of modified hydrotalcites and their ion exchange characteristics in chloride-rich simulated concrete pore solution［J］.Cement and Concrete Composites，2014，47：87-93.
[14] CAO Yanhui， ZHENG Dajiang， LUO Jingsong，et al.Insight into the fabrication of ZnAl layered double hydroxides intercalated with organic anions and their corrosion protection of steel reinforced concrete［J］.Journal of the Electrochemical Society，2019，166（16）：C617-C623.
[15] TIAN Yuwan， DONG Chaofang， WANG Gui，et al.Zn-Al-NO2 layered double hydroxide as a controlled-release corrosion inhibitor for steel reinforcements［J］.Materials Letters，2019，236：517-520.
[16] CHEN Mengzhu， WU Fang， YU Linwen，et al.Chloride binding capacity of LDHs with various divalent cations and divalent to trivalent cation ratios in different solutions［J］.CrystEngComm，2019，21（44）：6790-6800.
[17] LI Weihua， LIU Ang， TIAN Huiwen，et al.Controlled release of nitrate and molybdate intercalated in Zn-Al-layered double hydroxide nanocontainers towards marine anticorrosion applications>［J］.Colloid and Interface Science Communications，2018，24：18-23.
[18] ALIBAKHSHI E， GHASEMI E， MAHDAVIAN M，et al.Fabrication and characterization of layered double hydroxide/silane nanocomposite coatings for protection of mild steel［J］.Journal of the Taiwan Institute of Chemical Engineers，2017，80：924- 934.
[19] HAYATDAVOUDI H， RAHSEPAR M.Smart inhibition action of layered double hydroxide nanocontainers in zinc-rich epoxy coating for active corrosion protection of carbon steel substrate［J］.Journal of Alloys and Compounds，2017，711：560-567.
[20] BUCHHEIT R G， GUAN Hong， MAHAJANAM S，et al.Active corrosion protection and corrosion sensing in chromate-free organic coatings［J］.Progress in Organic Coatings，2003，47（3-4）：174-182.
[21] WU Yuchen， XU Zhipeng， ZHU Jiangwei，et al.Influence of MgAl-NO2 - LDHs on passivation of reinforcing steel in simulated geopolymer solution［J］.Cement and Concrete Composites，2024，152：105676.
[22] TANG Yongming， ZHANG Fan， HU Shengxiang，et al.Novel benzimidazole derivatives as corrosion inhibitors of mild steel in the acidic media.Part I：Gravimetric，electrochemical，SEM and XPS studies［J］.Corrosion Science，2013，74：271-282.
[23] POZNYAK S K， TEDIM J， RODRIGUES L M，et al.Novel inorganic host layered double hydroxides intercalated with guest organic inhibitors for anticorrosion applications［J］.ACS Applied Materials & Interfaces，2009，1（10）：2353-2362.
[24] XU Zhipeng， WU Yuchen， ZHANG Zhangmin，et al.Insight into ion exchange behavior of LDHs：Asynchronous chloride adsorption and intercalated ions release processes［J］.Cement and Concrete Composites，2024，147：105433.
[25] YANG Lei， CHEN Mingxu， LU Zeyu，et al.Synthesis of CaFeAl layered double hydroxides 2D nanosheets and the adsorption behaviour of chloride in simulated marine concrete［J］.Cement and Concrete Composites，2020，114：103817.
[26] BELLAL Y， BENGHANEM F， KERAGHEL S.A new corrosion inhibitor for steel rebar in concrete：Synthesis，electrochemical and theoretical studies［J］.Journal of Molecular Structure，2021，1225：129257.
[27] CUI Lei， HANG Meiyan， HUANG Huanghuang，et al.Experimental study on multi-component corrosion inhibitor for steel bar in chloride environment［J］.Construction and Building Materials，2021，313：125533.
[28] WANG Penggang， WANG Yuan， ZHAO Tiejun，et al.Effectiveness protection performance of an internal blending organic corrosion inhibitor for carbon steel in chloride contaminated simulated concrete pore solution［J］.Journal of Advanced Concrete Technology，2020，18（3）：116-128.
[29] 刘俊阳，王艳，孙丛涛，等.LDHs-BTA的制备及其对钢筋的阻锈性能［J］.建筑材料学报，2024，27（6）：503-513.
  LIU Junyang， WANG Yan， SUN Congtao，et al.Preparation of LDHs-BTA and its inhibition for corrosion of rebar［J］.Journal of Building Materials，2024，27（6）：503-513.
[30] 刘国建，朱航，张云升，等.混凝土孔溶液中不同侵蚀离子对钢筋的腐蚀行为［J］.硅酸盐学报，2022，50（2）：413-419.
  LIU Guojian， ZHU Hang， ZHANG Yunsheng，et al.Corrosion behavior of steel subjected to different corrosive ions in simulated concrete pore solution［J］.Journal of the Chinese Ceramic Society，2022，50（2）：413-419.
Options
Outlines

/

〈 〉



Copyright © 2021 Editorial Office of Inorganic Chemicals Industry

Add:No.3 Road Dingzigu,Hongqiao District,Tianjin,China

E-mail：book@wjygy.com.cn 违法和不良信息举报电话: 022-26689297