生物质碳点对<strong>Q235</strong>钢的缓蚀性能研究

doi:10.11902/1005.4537.2023.233

中国腐蚀与防护学报

2024, Vol. 44

Issue (3): 807-814 CSTR: 32134.14.1005.4537.2023.233 DOI: 10.11902/1005.4537.2023.233

研究报告

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生物质碳点对Q235钢的缓蚀性能研究

龙武剑¹^,², 唐杰¹, 罗启灵¹^,², 丘章鸿³, 王海龙³(

)

1.深圳大学土木与交通工程学院深圳 518060
2.广东省滨海土木工程耐久性重点实验室深圳 518060
3.广东裕恒工程检测技术有限责任公司广州 511356

Corrosion Inhibition Performance of Biomass-derived Carbon Dots on Q235 Steel

LONG Wujian¹^,², TANG Jie¹, LUO Qiling¹^,², QIU Zhanghong³, WANG Hailong³(

)

1. College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China
2. Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen 518060, China
3. Guangdong Yuheng Engineering Testing Technology Co., Ltd., Guangzhou 511356, China

引用本文:

龙武剑, 唐杰, 罗启灵, 丘章鸿, 王海龙. 生物质碳点对Q235钢的缓蚀性能研究[J]. 中国腐蚀与防护学报, 2024, 44(3): 807-814.
Wujian LONG, Jie TANG, Qiling LUO, Zhanghong QIU, Hailong WANG. Corrosion Inhibition Performance of Biomass-derived Carbon Dots on Q235 Steel[J]. Journal of Chinese Society for Corrosion and protection, 2024, 44(3): 807-814.

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摘要:

金属腐蚀威胁金属设施的安全性和可靠性，也加剧了环境污染和经济损失问题。然而，使用可持续、可再生且经济的原材料制备绿色缓蚀剂现阶段仍是有挑战性难题。本文以荔枝叶为原料制备了生物质基碳点(CDs)，并采用失重法、电化学阻抗谱和动电位极化曲线系统研究了其在1 mol/L HCl中对Q235钢的缓蚀性能。所获得的生物质基CDs具有丰富的含氧和含氮官能团，这些官能团使CDs在1 mol/L HCl溶液中保持稳定，具有长期有效的缓蚀性能。

关键词 ：碳点, 缓蚀剂, 吸附, 电化学实验

Abstract：

The corrosion of metallic materials poses a threat to the safety and reliability of metallic facility and equipment, as well as exacerbating environmental pollution and economic losses. However, the use of sustainable, renewable and economical raw materials to prepare green corrosion inhibitors is still a challenging issue at this stage. Herein, biomass-based carbon dots (CDs) were prepared with lychee leaves as raw material, and their corrosion inhibition performance on Q235 steel in 1 mol/L HCl was assessed by means of mass loss measurement, electrochemical impedance spectroscope, and potentiodynamic polarization measurement. Results indicate that the obtained biomass-derived CDs contain numerous oxygen and nitrogen functional groups, which enable them to remain stable in 1 mol/L HCl solution and exhibit long-term stable corrosion inhibition performance.

Key words： carbon dots corrosion inhibitor absorption electrochemical measurements

收稿日期: 2023-07-27 32134.14.1005.4537.2023.233

ZTFLH:

TG142.71

基金资助:国家自然科学基金-山东联合基金(U2006223);广东省重点领域研发计划(2019B111107003);广东省基础与应用基础研究基金(2023A1515012136)

通讯作者: 王海龙，E-mail:168680212@qq.com，研究方向为腐蚀与防护技术

Corresponding author: WANG Hailong, E-mail: 168680212@qq.com

作者简介: 龙武剑，男，1977年生，博士，教授

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图1 CDs的TEM图

图2 CDs的FTIR谱

图3 1 mg/mL的CDs水溶液UV-Vis光谱以及用不同激发波长测试得到的PL光谱

图4 Q235钢在含不同浓度CDs的1 mol/L HCl溶液中浸泡不同时间的腐蚀速率和缓蚀率随时间的变化曲线

图5 Q235钢在含不同浓度CDs的1 mol/L HCl中进行电化学测试结果

表1 Q235钢浸泡在不同溶液中的等效电路拟合参数

图6 Q235钢在含不同浓度CDs的1 mol/L HCl中的PDP曲线

表2 PDP测试所得电化学参数

图7 依据电化学测试数据计算所得的Langmuir吸附曲线

图8 Q235钢的SEM和EDS图像

图9 浸泡96 h前后Q235钢表面及CDs材料的FTIR谱

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