氮掺杂对碳纳米颗粒缓蚀性能的影响  

Effect of Nitrogen Doping on Corrosion Inhibition Performance of Carbon Nanoparticles

作　　者：王晶 王斯琰[1] 张崇 王文涛 曹星 樊宁 徐宏妍[1] WANG Jing;WANG Siyan;ZHANG Chong;WANG Wentao;CAO Xing;FAN Ning;XU Hongyan(School of Materials Science and Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学材料科学与工程学院,太原030051

出　　处：《中国腐蚀与防护学报》2022年第1期85-92,共8页Journal of Chinese Society For Corrosion and Protection

基　　金：山西省自然科学基金(201901D111175)。

摘　　要：通过热分解方法,以柠檬酸为碳源制备出无氮碳纳米颗粒(CNPs);以柠檬酸为碳源、尿素为氮源制备出氮掺杂碳纳米颗粒(N-CNPs)。采用原子力显微镜、红外光谱和Raman光谱表征碳纳米颗粒的结构,利用失重实验、电化学测试、激光共聚焦扫描显微镜观察等研究碳纳米颗粒在1 mol/L HCl溶液中对Q235钢缓蚀性能。结果表明:两种碳纳米颗粒均属于混合型缓蚀剂,50 mg/L CNPs的缓蚀效率为37.6%;而N-CNPs的缓蚀效率明显提高,达到90.96%。Nitrogen-free carbon nanoparticles(CNPs) were prepared by thermal decomposition method with citric acid as carbon source. While nitrogen-doped carbon nanoparticles(N-CNPs) were prepared by thermal decomposition method with citric acid as carbon source and urea as nitrogen source.The above nano-particles were characterized by means of atomic force microscope, infrared spectroscope and Raman spectroscope, and their corrosion inhibition performance for Q235 steel in 1 mol/L HCl solution was comparatively studied by mass loss method, electrochemical means and laser confocal scanning microscope. The results showed that the two carbon nanoparticles belonged to mixed-type corrosion inhibitors, the corrosion inhibition efficiency of N-free carbon nanoparticles was 37.5%, and the corrosion inhibition efficiency of the carbon nanoparticles was significantly improved after being doped with N. The corrosion inhibition efficiency of N-CNPs reached 90.96%.

关 键 词：碳纳米颗粒 缓蚀剂 电化学 Q235钢 

分 类 号：TG174.42[金属学及工艺—金属表面处理]