石墨烯／醋酸掺杂态聚苯胺的制备及其防腐性能

doi:10.11901/1005.3093.2020.247

材料研究学报

2021, Vol. 35

Issue (5): 357-363 DOI: 10.11901/1005.3093.2020.247

研究论文

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石墨烯／醋酸掺杂态聚苯胺的制备及其防腐性能

杨小刚¹, 崔世宏¹, 李斌²(

), 王传洁¹, 韩捷佳¹

^1.青岛科技大学环境与安全工程学院青岛 266042
^2.青岛科技大学材料科学与工程学院青岛 266042

Preparation and Corrosion Resistance of Graphene/Acetic Acid Doped Polyaniline

YANG Xiaogang¹, CUI Shihong¹, LI Bin²(

), WANG Chuanjie¹, HAN Jiejia¹

^1.College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
^2.College of Material Science Engineering, Qingdao University of Science and Technology, Qingdao 266042, China

引用本文:

杨小刚, 崔世宏, 李斌, 王传洁, 韩捷佳. 石墨烯／醋酸掺杂态聚苯胺的制备及其防腐性能[J]. 材料研究学报, 2021, 35(5): 357-363.
Xiaogang YANG, Shihong CUI, Bin LI, Chuanjie WANG, Jiejia HAN. Preparation and Corrosion Resistance of Graphene/Acetic Acid Doped Polyaniline[J]. Chinese Journal of Materials Research, 2021, 35(5): 357-363.

全文: PDF(6403 KB) HTML

摘要:

在醋酸体系中用原位聚合法将石墨烯(RGO)与不同比例的苯胺(ANI)合成RGO/PANI一次掺杂态产物，用氨水解掺杂后再掺杂醋酸制备出RGO/PANI二次掺杂态产物。使用红外光谱、紫外光谱和扫描电镜等手段表征产物的结构和形貌并用电化学技术测试其防腐性能。结果表明，RGO与ANI质量比为1:10时生成的一次掺杂态产物形貌最好，防腐效果最佳；RGO表面生长的聚苯胺长度为300~650 nm,直径为70~100 nm，产物的缓蚀效率可达73.19%；RGO/PANI二次掺杂态产物为石墨烯／醋酸掺杂态聚苯胺；醋酸掺杂可明显改善产物的结构和形貌并提高其缓蚀效率，缓蚀效率可达到80.21%，防腐性能优异。

关键词 ：复合材料, 石墨烯, 聚苯胺, 醋酸, 二次掺杂, 防腐

Abstract：

The primary doped products of RGO/PANI were synthesized via in situ polymerization method in acetic acid with graphene (RGO) and different proportions aniline (ANI) as raw materials, and then the secondary doped products of RGO/PANI were obtained via de-doping with ammonia and afterwards re-doping with acetic acid. The structure and morphology of the prepared products were characterized by IR, UV and SEM. Their anticorrosion performance was assessed by electrochemical workstation. The results show that the primary doped products with the mass ratio 1:10 of RGO to ANI had the best morphology and anti-corrosion property. The polyaniline grown on the surface of graphene is about 300~650 nm in length and 70~100 nm in diameter, and the corrosion inhibition efficiency was up to 73.19%. The products obtained by secondary doping of acetic acid had better morphology, higher corrosion inhibition efficiency and excellent corrosion resistance performance. The corrosion inhibition efficiency is up to 80.21%.

Key words： composite graphene polyaniline acetic acid secondary doping anti-corrosion

收稿日期: 2020-06-22

ZTFLH:

TB332

基金资助:国家自然科学基金(41106070);重油加工国家重点实验室项目(SKLOP201603003)

作者简介: 杨小刚，男，1977年生，博士生，副教授

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https://www.cjmr.org/CN/10.11901/1005.3093.2020.247 或 https://www.cjmr.org/CN/Y2021/V35/I5/357

图1 一次掺杂态PANI、二次掺杂态、RGO/ANI为1:5时、RGO/ANI为1:10时、RGO/ANI为1:15时、RGO/ANI为1:20时、RGO/ANI为1:25时以及RGO/二次掺杂态PANI的形貌

图2 一次掺杂产物和二次掺杂产物的红外光谱图

图3 一次掺杂产物和二次掺杂产物的紫外光谱图

图4 一次掺杂产物和二次掺杂产物的极化曲线图

表1 极化曲线的拟合结果

图5 一次掺杂产物和二次掺杂产物的电化学阻抗谱

图6 阻抗谱等效电路

表2 电化学阻抗谱的拟合结果

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