实验技术与管理2026，Vol.43Issue(2)：171-178,8.DOI:10.16791/j.cnki.sjg.2026.02.020
ZIF-67/Zn0.1Cd0.9S复合材料光催化降解盐酸四环素的综合实验设计
Comprehensive experiment design for the photocatalytic degradation of tetracycline hydrochloride by ZIF-67/Zn0.1Cd0.9S composite materials
摘要
Abstract
[Objective]With the ongoing advancement of emerging new engineering disciplines,undergraduate experimental teaching is progressively transitioning from the traditional model of"verification-oriented knowledge transmission"to a new paradigm emphasizing"comprehensive,innovative,and interdisciplinary capability development."To address the demands of engineering education reform and cultivate high-quality engineering talent with interdisciplinary integration capabilities,this study designed and implemented a comprehensive experimental teaching project titled"Preparation of ZIF-67/Zn0.1Cd0.9S composite materials and their photocatalytic degradation of tetracycline hydrochloride(TC-HCl)."The experiment was structured around a complete practical process of"material synthesis—characterization analysis—performance investigation,"aiming to develop students'interdisciplinary knowledge integration and innovative thinking skills,in alignment with the talent development goals of emerging engineering education.[Methods]An S-scheme ZIF-67/Zn0.1Cd0.9S heterojunction photocatalyst was successfully fabricated via an in situ hydrothermal synthesis method.The regulatory mechanisms of solution pH on crystal growth kinetics and of the heterointerface structure on photocatalytic performance were systematically investigated.The phase composition,structural properties,and specific surface area of the composite materials were characterized by X-ray diffraction,Fourier transform infrared spectroscopy,and N2 adsorption-desorption.Morphology was observed using scanning electron microscopy,while optical absorption characteristics and band structures were analyzed using ultraviolet-visible diffuse reflectance spectroscopy and electrochemical methods.[Results]Experimental results indicated that ZIF-67 exhibited a smooth,leaf-like morphology,whereas pure-phase Zn0.1Cd0.9S formed a microsphere structure via nanoparticle self-assembly.In the ZIF-67/Zn0.1Cd0.9S-7 composite material prepared at pH=7,Zn0.1Cd0.9S nanoparticles were uniformly coated on the surface of ZIF-67 nanosheets,with the original microsphere structure of the pure phase disappearing completely.The mesoporous composite exhibited a broader spectral response range and a 59.8%increase in specific surface area compared with pure-phase Zn0.1Cd0.9S.Its photocatalytic degradation rate constant for TC-HCl(0.035 min-¹)was 4.07 times and 2.97 times higher than those of samples synthesized at pH=5(ZIF-67/Zn0.1Cd0.9S-5)and pH=9(ZIF-67/Zn0.1Cd0.9S-9),respectively.Radical trapping experiments and photoelectrochemical measurements revealed that the photocatalytic process primarily followed an S-scheme heterojunction mechanism.[Conclusions]This teaching project consisted of three interconnected teaching modules:experimental design and scheme optimization,material synthesis and characterization,and photocatalytic performance and mechanism investigation.By integrating multiple material characterization and photoelectrochemical testing methods,the experiment systematically illustrated the influence of synthesis conditions on material structure,optical properties,and photocatalytic activity,establishing a comprehensive teaching system covering the entire process from"scheme design—material preparation—performance characterization—mechanism investigation."Teaching practice demonstrated that this experiment helped students master composite material synthesis and characterization techniques.More than 90%of the students independently completed material characterization and data analysis,and more than 80%could construct a systematic analytical framework for the photocatalytic reaction mechanism,thereby considerably enhancing their innovative thinking and complex engineering problem-solving skills.The comprehensive experiment developed in this study epitomizes the new philosophy of engineering talent cultivation:"solid foundation,strong interdisciplinary integration,and practice-oriented education."By deeply integrating research content with experimental teaching,this work provides a valuable reference for advancing the development of high-quality experimental curricula that integrate research into teaching.关键词
ZIF-67/Zn0.1Cd0.9S/复合材料/光催化降解/盐酸四环素/实验教学Key words
ZIF-67/Zn0.1Cd0.9S/composite materials/photocatalytic degradation/tetracycline hydrochloride/experimental teaching分类
化学化工引用本文复制引用
李靖,罗园园,梁东辉,王晓辉,荆凯强,瞿翠玲,陈艳..ZIF-67/Zn0.1Cd0.9S复合材料光催化降解盐酸四环素的综合实验设计[J].实验技术与管理,2026,43(2):171-178,8.基金项目
徐州工程学院教育科学研究重点课题(YGJ2301) （YGJ2301）
国家自然科学基金项目(22208277) （22208277）
2025年江苏省高等教育教改研究重中之重课题(2025JGZZ53) （2025JGZZ53）
