TAILIEUCHUNG - Corrosion inhibition of carbon steel by LDH go hybrid intercalated with 2-benzothiazolythiosuccinic acid

The synthesized LDH/GO-BTSA was characterized by FTIR, XRD and SEM. The inhibitive action of LDH/GO-BTSA on carbon steel was evaluated and compared with LDHBTSA by electrochemical measurement. It was shown that the GO and BTSA were intercalated in LDH structure. The obtained results showed that LDH/GO-BTSA is anodic corrosion inhibitors, and the inhibition efficiency was 94 % at concentration of 1 g/l. | Vietnam Journal of Science and Technology 55 (5B) (2017) 119-125 CORROSION INHIBITION OF CARBON STEEL BY LDH/GO HYBRID INTERCALATED WITH 2-BENZOTHIAZOLYTHIOSUCCINIC ACID Nguyen Thuy Dương1, Tran Boi An2, Phan Thanh Thao2, Nguyen Anh Son1, Vu Ke Oanh1, Trinh Anh Truc1, To Thi Xuan Hang1* 1 Institute for Tropical Technology, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam 2 Institute of Chemical Technology, Vietnam Academy of Science and Technology 1 Mac Dinh Chi, District 1, Ho Chi Minh City * Email: ttxhang60@ Received: 30 August 2017; Accepted for publication: 6 October 2017 ABSTRACT Layered double hydroxide/graphene oxide hybrid (LDH/GO) intercalated with corrosion inhibitor 2-benzothiazolylthio-succinic acid (BTSA) was prepared using co-precipitation method. The synthesized LDH/GO-BTSA was characterized by FTIR, XRD and SEM. The inhibitive action of LDH/GO-BTSA on carbon steel was evaluated and compared with LDHBTSA by electrochemical measurement. It was shown that the GO and BTSA were intercalated in LDH structure. The obtained results showed that LDH/GO-BTSA is anodic corrosion inhibitors, and the inhibition efficiency was 94 % at concentration of 1 g/l. Keywords: layered double hydroxide, graphene oxide, corrosion inhibitior, carbon steel. 1. INTRODUCTION Layered double hydroxides (LDHs) are known as anionic clays. They are composed of positively charged hydroxide layers similar to the brucite structure with intercalated anions and water molecules between the layers. LDHs with anion-exchange capability have been investigated as a container of corrosion inhibitors for corrosion protection of metals [1-6]. The corrosion inhibitors can be released from the LDH container by exchange reaction with aggressive anions Cl-. The LDH containers have two roles: absorbing the harmful anions and releasing the inhibiting anions [1, 7]. Graphene oxide is usually synthesized from the oxidation of graphite by strong .

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• Carbon steel by LDH
• 2 benzothiazolythiosuccinic acid
• The inhibition efficiency
• Layered double hydroxide
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