Electrochemical Assessment of Rhus typhina L. Leaf Extract as a Novel Green Corrosion Inhibitor for OL37 in 1 M HCl Medium.

IF 4.6 2区化学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY

Molecules Pub Date : 2025-06-19 DOI:10.3390/molecules30122660

Denisa-Ioana Răuță Gheorghe, Florina Brânzoi, Roxana-Doina Truşcă, Sorin-Marius Avramescu, Ecaterina Matei

{"title":"Electrochemical Assessment of Rhus typhina L. Leaf Extract as a Novel Green Corrosion Inhibitor for OL37 in 1 M HCl Medium.","authors":"Denisa-Ioana Răuță Gheorghe, Florina Brânzoi, Roxana-Doina Truşcă, Sorin-Marius Avramescu, Ecaterina Matei","doi":"10.3390/molecules30122660","DOIUrl":null,"url":null,"abstract":"This study evaluates the corrosion-inhibiting effects of the methanolic (P1) and the hydroalcoholic (P2) extracts of the Rhus typhina L. leaves on carbon steel (OL37) in 1 M HCl. Extracts were prepared with microwave-assisted extraction and characterized using HPLC and LC-MS. Electrochemical methods (OCP, EIS, PDP) and surface analyses (SEM, EDX) assessed the performance of both extracts. The results showed that the P1 and P2 extracts significantly reduced corrosion rates by forming protective layers on the metal surface, with inhibition efficiencies exceeding 90%, at 1000 ppm concentration, for P1 (93%), for P2 at 800 ppm (91%) and 1000 ppm (94%). The P2 extract demonstrated superior long-term performance, maintaining protection after 96 h of immersion. The extracts function as mixed-type inhibitors, affecting both anodic and cathodic reactions, with physicochemical adsorption demonstrated by the Langmuir isotherm. Overall, the Rhus typhina leaf extracts, particularly the P2 extract, offer a promising, eco-friendly approach to corrosion prevention in acidic environments.","PeriodicalId":19041,"journal":{"name":"Molecules","volume":"30 12","pages":""},"PeriodicalIF":4.6000,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12196263/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Molecules","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.3390/molecules30122660","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

This study evaluates the corrosion-inhibiting effects of the methanolic (P₁) and the hydroalcoholic (P₂) extracts of the Rhus typhina L. leaves on carbon steel (OL37) in 1 M HCl. Extracts were prepared with microwave-assisted extraction and characterized using HPLC and LC-MS. Electrochemical methods (OCP, EIS, PDP) and surface analyses (SEM, EDX) assessed the performance of both extracts. The results showed that the P₁ and P₂ extracts significantly reduced corrosion rates by forming protective layers on the metal surface, with inhibition efficiencies exceeding 90%, at 1000 ppm concentration, for P₁ (93%), for P₂ at 800 ppm (91%) and 1000 ppm (94%). The P₂ extract demonstrated superior long-term performance, maintaining protection after 96 h of immersion. The extracts function as mixed-type inhibitors, affecting both anodic and cathodic reactions, with physicochemical adsorption demonstrated by the Langmuir isotherm. Overall, the Rhus typhina leaf extracts, particularly the P₂ extract, offer a promising, eco-friendly approach to corrosion prevention in acidic environments.

查看原文本刊更多论文

1 M HCl介质中新型绿色OL37缓蚀剂斑竹叶提取物的电化学评价

在1 M HCl溶液中，研究了红豆杉叶片甲醇（P1）和水醇（P2）提取物对碳钢（OL37）的缓蚀作用。采用微波辅助提取法提取提取物，并采用HPLC和LC-MS对其进行表征。电化学方法（OCP， EIS， PDP）和表面分析（SEM， EDX）评估了两种提取物的性能。结果表明，P1和P2提取物通过在金属表面形成保护层，显著降低了腐蚀速率，在1000 ppm浓度下，P1（93%）、P2 （800 ppm）和1000 ppm（94%）的缓蚀效率均超过90%。P2提取物表现出优异的长期性能，在浸泡96小时后仍能保持保护作用。该提取物作为混合型抑制剂，同时影响阳极和阴极反应，具有Langmuir等温线的物理化学吸附。总的来说，红树叶提取物，特别是P2提取物，在酸性环境中提供了一种有前途的、环保的防腐方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Molecules 化学-有机化学

CiteScore

7.40

自引率

8.70%

发文量

7524

审稿时长

1.4 months

期刊介绍： Molecules (ISSN 1420-3049, CODEN: MOLEFW) is an open access journal of synthetic organic chemistry and natural product chemistry. All articles are peer-reviewed and published continously upon acceptance. Molecules is published by MDPI, Basel, Switzerland. Our aim is to encourage chemists to publish as much as possible their experimental detail, particularly synthetic procedures and characterization information. There is no restriction on the length of the experimental section. In addition, availability of compound samples is published and considered as important information. Authors are encouraged to register or deposit their chemical samples through the non-profit international organization Molecular Diversity Preservation International (MDPI). Molecules has been launched in 1996 to preserve and exploit molecular diversity of both, chemical information and chemical substances.