石油与天然气化工2024，Vol.53Issue(3)：98-104,7.DOI:10.3969/j.issn.1007-3426.2024.03.016
烷基化碳量子点表面活性剂的制备及性能
Preparation and properties of alkylated carbon quantum dot surfactants
摘要
Abstract
Objective To study the application of nitrogen-doped carbon quantum dots(CQDs)in oil and gas development through alkylation modification of CQDs prepared by hydrothermal method.Methods Carbon quantum dots CQDs and nitrogen-doped carbon quantum dots N-CQDs were synthesized with citric acid as carbon source and diethylenetriamine as nitrogen source under hydrothermal conditions.An amphiphilic surfactant R-(N-CQDs)was obtained by surface modification of the prepared N-CQDs through an alkylation reaction.Results The particle size distribution of CQDs and N-CQDs was uniform,with the typical particle size characteristics of carbon quantum dots.The fluorescence quantum yields of CQDs and N-CQDs were 10％and 47％,respectively,at the maximum excitation wavelength,and nitrogen doping significantly improved the fluorescence properties of carbon quantum dots.Compared with commonly utilized surfactant SDBS,R-(N-CQDs)could reduce surface tension and improve foam stability and emulsification.Conclusion The modified carbon quantum dots can reduce water surface tension,have excellent emulsification and foam stabilization performance,and have specific application potential in oil and gas development.关键词
碳量子点/氮掺杂/表面改性/烷基化/荧光量子产率Key words
carbon quantum dots/nitrogen doping/surface modification/alkylate/fluorescence quantum yield引用本文复制引用
朱林,刘庆旺,孙勇强,范振忠,王旭,仝其雷..烷基化碳量子点表面活性剂的制备及性能[J].石油与天然气化工,2024,53(3):98-104,7.基金项目
黑龙江省自然科学基金项目"磁性纳米Fe3O4@SiO2-NH2絮凝油田污水方法研究"(LH2020E014) （LH2020E014）
