kaz44Вестник Университета Шакарима. Серия технические наукиBulletin of Shakarim University. Technical Sciences2788-79953006-0524«Шәкәрім университеті» КеАҚ10.53360/2788-7995-2024-2(14)-49kaz44-1034Research ArticleХИМИЧЕСКАЯ ТЕХНОЛОГИЯ (ОРИГИНАЛЬНАЯ СТАТЬЯ)CHEMICAL TECHNOLOGY (ORIGINAL ARTICLE)ЧЕРНАЯ СМОРОДИНА (RIBES NIGRUM) ИЗ ЗАПАДНОГО КАЗАХСТАНА – НОВЫЙ ПРИРОДНЫЙ ЭКОЛОГИЧЕСКИ ЧИСТЫЙ ИНГИБИТОР КОРРОЗИИ УГЛЕРОДИСТОЙ СТАЛИBLACKCURRANT (RIBES NIGRUM) FROM WESTERN KAZAKHSTAN – A NOVEL NATURAL ECO-FREINDLY CORROSION INHIBITOR OF CARBON STEELhttps://orcid.org/0000-0001-9248-2753АкатьевН. В.AkatyevN. V.

Николай Владимирович Акатьев – кандидат химических наук, старший преподаватель

090000, Республика Казахстан, Уральск, проспект Н. Назарбаева, 162 

Nikolay Vladimirovich Akatyev – candidate of chemical sciences, senior lecturer

090000, Republic of Kazakhstan, Uralsk, N. Nazarbayev Ave. 162 

nikolay.akatyev@wku.edu.kzhttps://orcid.org/0009-0009-3540-9475ХапиеваМ. К.KhapiyevaM. K.

Мерует Куанышкызы Хапиева – магистрант

090000, Республика Казахстан, Уральск, проспект Н. Назарбаева, 162 

Meruyet Kuanyshkyzy Khapiyeva – master student

090000, Republic of Kazakhstan, Uralsk, N. Nazarbayev Ave. 162 

missmeruuu@gmail.comhttps://orcid.org/0009-0007-9236-6155КенжегалиеваР. Ж.KenzhegalievaR. Zh.

Роза Жалгасовна Кенжегалиева – магистрант

090000, Республика Казахстан, Уральск, проспект Н. Назарбаева, 162 

Roza Zhalgasovna Kenzhegalieva – master student

090000, Republic of Kazakhstan, Uralsk, N. Nazarbayev Ave. 162 

rozka_k90@mail.ruhttps://orcid.org/0009-0001-2327-5977СейловаТ. Б.SeilovaT. B.

Томирис Бериковна Сейлова – магистрант

090000, Республика Казахстан, Уральск, проспект Н. Назарбаева, 162 

Tomiris Berikovna Seilova – master student

090000, Republic of Kazakhstan, Uralsk, N. Nazarbayev Ave. 162 

tomy27@mail.ruЗападно-Казахстанский университет им. М. УтемисоваКазахстанM. Utemisov West Kazakhstan UniversityKazakhstan20242906202412(14)390401Copyright © Акатьев Н.В., Хапиева М.К., Кенжегалиева Р.Ж., Сейлова Т.Б., 20242024Акатьев Н.В., Хапиева М.К., Кенжегалиева Р.Ж., Сейлова Т.Б.Akatyev N.V., Khapiyeva M.K., Kenzhegalieva R.Z., Seilova T.B.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://tech.vestnik.shakarim.kz/jour/article/view/1034

В настоящем исследовании метод потери массы и электрохимические методы были использованы для изучения ингибирующих свойств водного экстракта листьев Ribes nigrum относительно коррозии углеродистой стали в солянокислой среде. Установлено, что в 1,0 моль·дм-3 HCl эффективность ингибирования экстрактом может достигать 92,66%. Показано, что защитная способность ингибитора возрастает с увеличением его концентрации. Обнаружено, что высокая эффективность ингибирования является результатом самопроизвольной физиосорбции ингибитора (ΔG0abs ˃ -20 кДж·моль-1) на поверхности углеродистой стали, которая подчиняптся модели Ленгмюра. Анализ поляризационных кривых выявил смешанный тип ингибирующего действия исследуемого экстракта, при этом наибольшая эффективность ингибирования достигается при концентрации ингибитора 2,0 г·дм-3. Электрохимические и гравиметрические данные оказались в хорошем согласии. На основании УФ-спектрофотометрического анализа коррозионной среды до и после погружения образца углеродистой стали, сделано предположение о том, что ингибирующее действие экстракта обусловлено адсорбцией фенольных соединений. Водный экстракт листьев R. nigrum был предложен в качестве недорогого, экологически чистого и эффективного ингибитора коррозии.

In the current study, weight loss measurements and electrochemical methods were used to examine the inhibitory characteristics of the aqueous extract of Ribes nigrum leaves on the corrosion of carbon steel in hydrochloric acid medium. It has been determined that in 1.0 mol·dm-3 HCl, the inhibition efficiency of the extract can reach up to 92,66%. Metal protection ability was found to increase with increasing inhibitor concentration. It was observed that high inhibition efficiency is a result of spontaneous physisorption of the inhibitor (ΔG0abs ˃ -20 kJ·mol-1) on the carbon steel surface directly obeys the Langmuir absorption model. The polarization curves analysis revealed the mixed-type inhibition behavior of the studied extract with the highest inhibition efficiency achieved at inhibitor concentration of 2.0 g·dm-3. The electrochemical and gravimetric data were found in great agreement. The assumption that the inhibitory effect of the extract is caused by the adsorption of phenolic compounds was made by the performing of UV-vis spectrophotometric analysis of the corrosive medium before and after the immersion of the carbon steel specimen. Aqueous extract of the R. nigrum leaves was proposed as a low-cost, environmentally friendly and effective corrosion inhibitor.

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The authors declare that there are no conflicts of interest present.