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Effect of Piperazine Functionalization of Mesoporous Silica Type SBA-15 on the Loading Efficiency of 2-Mercaptobenzothiazole Corrosion Inhibitor
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-02-17 , DOI: 10.1021/acs.iecr.9b05261 Misagh Amini 1 , Reza Naderi 1 , Mohammad Mahdavian 2 , Alireza Badiei 3
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-02-17 , DOI: 10.1021/acs.iecr.9b05261 Misagh Amini 1 , Reza Naderi 1 , Mohammad Mahdavian 2 , Alireza Badiei 3
Affiliation
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This work intends to study the effect of functionalization of SBA-15 on the loading and release behaviors of 2-mercaptobenzothiazole (MBT). SBA-15 mesoporous silica was first synthesized and functionalized by a postgrafting method using a piperazine silane coupling agent. Then, SBA-15 was loaded with MBT as a corrosion inhibitor. Various characterizations demonstrated that MBT was successfully encapsulated into the interior nanochannels of nanocontainers. Furthermore, the release study results revealed that the modified sample liberated MBT up to 17 times of the unmodified sample. Assessment of the electrochemical behavior of steel in NaCl solution containing the released inhibiting moieties indicated that the presence of MBT resulted in the formation of a more compact layer of corrosion products with more fine particles. Moreover, the MBT molecules were found to be mixed-type corrosion inhibitors. It was found that functionalizing by piperazine improved the inhibition efficiency of MBT-loaded samples. The trend and magnitude of impedance of specimens coated by the artificially scratched epoxy silicone revealed the role of the inhibitors desorbed from the functionalized SBA-15 in the polymer film active corrosion protection properties.
中文翻译：
SBA-15型中孔二氧化硅的哌嗪功能化对2-巯基苯并噻唑缓蚀剂负载效率的影响
这项工作旨在研究SBA-15的功能化对2-巯基苯并噻唑（MBT）的负载和释放行为的影响。首先使用哌嗪硅烷偶联剂通过后接枝方法合成并官能化SBA-15中孔二氧化硅。然后，在SBA-15中加载MBT作为缓蚀剂。各种表征表明，MBT已成功封装到纳米容器的内部纳米通道中。此外，释放研究结果表明，改性样品释放的MBT高达未改性样品的17倍。对钢在含有释放的抑制部分的NaCl溶液中的电化学行为进行评估表明，MBT的存在导致形成了更致密的腐蚀产物层，并带有更多的细颗粒。此外，发现MBT分子是混合型腐蚀抑制剂。发现哌嗪的官能化提高了MBT负载样品的抑制效率。用人工刮擦的环氧硅氧烷涂覆的样品的阻抗趋势和强度揭示了从官能化SBA-15解吸的抑制剂在聚合物膜活性防腐性能中的作用。
更新日期：2020-02-17
中文翻译：
SBA-15型中孔二氧化硅的哌嗪功能化对2-巯基苯并噻唑缓蚀剂负载效率的影响
这项工作旨在研究SBA-15的功能化对2-巯基苯并噻唑（MBT）的负载和释放行为的影响。首先使用哌嗪硅烷偶联剂通过后接枝方法合成并官能化SBA-15中孔二氧化硅。然后，在SBA-15中加载MBT作为缓蚀剂。各种表征表明，MBT已成功封装到纳米容器的内部纳米通道中。此外，释放研究结果表明，改性样品释放的MBT高达未改性样品的17倍。对钢在含有释放的抑制部分的NaCl溶液中的电化学行为进行评估表明，MBT的存在导致形成了更致密的腐蚀产物层，并带有更多的细颗粒。此外，发现MBT分子是混合型腐蚀抑制剂。发现哌嗪的官能化提高了MBT负载样品的抑制效率。用人工刮擦的环氧硅氧烷涂覆的样品的阻抗趋势和强度揭示了从官能化SBA-15解吸的抑制剂在聚合物膜活性防腐性能中的作用。
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