丙烯酸-益母草药渣复合碳点荧光型阻垢剂的设计及性能研究

doi:10.11902/1005.4537.2024.167

中国腐蚀与防护学报

2025, Vol. 45

Issue (3): 812-820 CSTR: 32134.14.1005.4537.2024.167 DOI: 10.11902/1005.4537.2024.167

研究报告

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丙烯酸-益母草药渣复合碳点荧光型阻垢剂的设计及性能研究

张洪江¹(

), 陈佳起², 谢微微², 刘仲轩², 董社英²

^1.华北电力科学研究院有限责任公司北京 100045
^2.西安建筑科技大学化学与化工学院西安 710311

Design and Performance of Acrylic Acid-motherwort Dregs Composite Carbon Dots for Fluorescent Scale Inhibitor

ZHANG Hongjiang¹(

), CHEN Jiaqi², XIE Weiwei², LIU Zhongxuan², DONG Sheying²

^1.North China Electric Power Research Institute Co., Ltd., Beijing 100045, China
^2.School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an 710311, China

引用本文:

张洪江, 陈佳起, 谢微微, 刘仲轩, 董社英. 丙烯酸-益母草药渣复合碳点荧光型阻垢剂的设计及性能研究[J]. 中国腐蚀与防护学报, 2025, 45(3): 812-820.
Hongjiang ZHANG, Jiaqi CHEN, Weiwei XIE, Zhongxuan LIU, Sheying DONG. Design and Performance of Acrylic Acid-motherwort Dregs Composite Carbon Dots for Fluorescent Scale Inhibitor[J]. Journal of Chinese Society for Corrosion and protection, 2025, 45(3): 812-820.

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摘要:

荧光型阻垢剂是保障阻垢剂浓度在线荧光检测的关键一环，高效环保的荧光型阻垢剂研发因此具有重要意义。本文使用一步水热法合成了丙烯酸与益母草药渣的复合碳点(AA-CD_M)，并通过红外光谱与X射线光电子能谱证实其复合过程。阻垢测试结果表明，丙烯酸的引入有效地提高了益母草药渣碳点的阻垢性能，AA-CD_M在低投加量时(5 mg·L^-1)阻CaSO₄垢效率接近100%，该荧光阻垢剂具有螯合增溶与抑制CaSO₄垢正常生长等阻垢机理。在测试时间45 h后，AA-CD_M仍保有95%以上的阻垢率。此外，在AA-CD_M浓度范围为1~50 mg·L^-1时，其荧光强度与浓度呈现线性相关(R² = 0.999)，有利于实现其浓度在线检测。

关键词 ：丙烯酸, 益母草药渣, 复合碳点, 荧光阻垢剂设计, 阻垢性能, 抑制机理

Abstract：

In recent years, the fluorescence detection technology has become the main methods of on-line detection for scale inhibitors. Then, fluorescence-type scale inhibitors play a key role in the above inspection, and its research work is need urgently. Herein, novel composite carbon dots (AA-CD_M) of acrylic acid-motherwort dregs, which was synthesized using a one-step hydrothermal method with motherwort dregs and acrylic acid as raw materials. Then, the rationality of AA-CD_M synthesis process was confirmed by infrared spectrum and X-ray photoelectron spectroscopy. In the anti-scaling aspect, the results of scale inhibition test showed that the AA-CD_M presents remarkably enhanced scale inhibition efficiency, which is attributed to the introduction of acrylic acid into the motherwort-dregs-based. The inhibition efficiency of AA-CD_M in low concentration (5 mg·L^-1) for CaSO₄-type scale was close to 100%, and what is more, which may be retained above 95% origin level, even in 45 h after the first use. Besides, the relevant anti-scaling mechanism of AA-CD_M was analyzed, the outcomes of XRD, XPS, and ultraviolet differential spectroscopy exhibit that AA-CD_M has the chelating solubilization ability, which can inhibit the normal growth of CaSO₄ scale. Meanwhile, the fluorescence intensity of AA-CD_M showed a linear correlation with its concentration (R² = 0.999), and the material presents has also good in thermal stability of fluorescence. Overall, the AA-CD_M is suitable for most circulating water systems, and remains design method to get a novel fluorescent scale inhibitor.

Key words： acrylic acid motherwort dregs composite carbon dots fluorescent scale inhibitor design scale inhibition performance mechanism of inhibition

收稿日期: 2024-05-28 32134.14.1005.4537.2024.167

ZTFLH:

X703

基金资助:华北电科院化学环保所项目(20230744)

通讯作者: 张洪江，E-mail：416228638@qq.com，研究方向为火电厂水工况优化及热力系统化学技术

Corresponding author: ZHANG Hongjiang, E-mail: 416228638@qq.com

作者简介: 张洪江，男，1985年生，硕士，高级工程师

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图1 所制备碳点的红外谱图，CDM和AA-CDM在高分辨率下C 1s的XPS谱图及TEM图

图2 AA-CDM浓度对其荧光发射光谱的影响

图3 测试温度对AA-CDM发射光谱的影响及AA-CDM热重曲线图

图4 不同材料的阻垢性能对比图

图5 测试温度、时间和pH对AA-CDM阻CaSO4垢的影响，以及AA-CDM含量对其阻CaCO3垢的影响

图6 AA-CDM与其它阻垢剂的阻垢效果比较[12,21~27]

图7 添加3 mg·L-1 AA-CDM前后CaSO4的SEM图及添加不同浓度AA-CDM后CaSO4的XRD谱

图8 差分紫外光谱及高分辨率下O 1s和N 1s的XPS谱

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