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  

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

作　　者：张洪江[1] 陈佳起 谢微微 刘仲轩 董社英[2] ZHANG Hongjiang;CHEN Jiaqi;XIE Weiwei;LIU Zhongxuan;DONG Sheying(North China Electric Power Research Institute Co.,Ltd.,Beijing 100045,China;School of Chemistry and Chemical Engineering,Xi'an University of Architecture and Technology,Xi'an 710311,China)

机构地区：[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

出　　处：《中国腐蚀与防护学报》2025年第3期812-820,共9页Journal of Chinese Society For Corrosion and Protection

基　　金：华北电科院化学环保所项目(20230744)。

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-CDM),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-CDM在低投加量时(5 mg·L^(-1))阻CaSO_(4)垢效率接近100%,该荧光阻垢剂具有螯合增溶与抑制CaSO_(4)垢正常生长等阻垢机理。在测试时间45 h后,AA-CDM仍保有95%以上的阻垢率。此外,在AA-CDM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。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-CDM)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-CDM 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-CDM 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-CDM in low concentration(5 mg·L^(-1))for CaSO_(4)-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-CDM was analyzed,the outcomes of XRD,XPS,and ultraviolet differential spectroscopy exhibit that AA-CDM has the chelating solubilization ability,which can inhibit the normal growth of CaSO_(4) scale.Meanwhile,the fluorescence intensity of AA-CDM 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-CDM is suitable for most circulating water systems,and remains design method to get a novel fluorescent scale inhibitor.

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 

分 类 号：X703[环境科学与工程—环境工程]