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利用热解聚合反应成功制备了系列环境友好型的氮化碳电极材料,用于检测河湖水样中微量重金属Pb2+和Cd2+.XRD,XPS,SEM和FTIR等表征结果显示,经过超声处理后,该材料展现出明显的无序化结构,暴露出更多的活性N位点,从而改善其对水体中Pb2+和Cd2+的检出限.经过超声处理的氮化碳电极对Pb2+和Cd2+的检出限可达0.06和0.001μmol·L-1,远优于未处理的氮化碳,且在持续7d的检测中维持了良好的稳定性,为河湖水体中重金属离子的检测提供新的思路.
Abstract：A series of environmentally friendly carbon nitride electrode materials was successfully prepared using pyrolytic polymerization reactions for detecting trace amounts of the heavy metals lead and cadmium in rivers and lakes.Characterization results from XRD,XPS,SEM and FTIR revealed that carbon nitride subjected to ultrasound treatment exhibited significant disordered structure,exposed more N-sites,which greatly improved its detection limits for Pb2+ and Cd2+ in water.The detection limits of the ultrasonically treated carbon nitride electrode for Pb2+ and Cd2+ can be as low as 0.06 and 0.001μmol·L-1,significantly surpassing those of untreated carbon nitride.Furthermore,the ultrasound-treated carbon nitride can maintain good stability during a one-week test.This study provides a new avenue for detecting heavy metal ions in river and lake water using carbon nitride materials.
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基本信息:
DOI：10.16783/j.cnki.nwnuz.2025.04.002
中图分类号:O657.1;X832
引用信息:
[1]雷琴,支鸣强,邱赞等.环境友好型氮化碳用于电化学高效检测水体中铅和镉[J].西北师范大学学报(自然科学版),2025,61(04):7-16.DOI:10.16783/j.cnki.nwnuz.2025.04.002.
基金信息:
国家自然科学基金资助项目(22402225); 苏州市领军人才科研资助项目(ZXL2023193)