石墨相氮化碳在玉米赤霉烯酮降解中的应用  

Application of Graphitic Carbon Nitride in Zearalenone Degradation

作　　者：和肖营 朱延光 王平东 陈晋莹 HE Xiao-ying;ZHU Yan-guang;WANG Ping-dong;CHEN Jin-ying(Hangzhou Branch of China National Grain and Cereals Storage and Quality Inspection Center(Jiangsu)Co.,Ltd,Hangzhou,Zhejiang 310000,China;Sinograin Chengdu Storage Research Institute Co.Ltd,Chengdu,Sichuan 610000,China;China National Grain and Cereals Storage and Quality Inspection Center(Jiangsu)Co.,Ltd,Nanjing,Jiangsu 210000,China)

机构地区：[1]中储粮江苏质检中心有限公司杭州分公司,浙江杭州310000 [2]中储粮成都储藏研究院有限公司,四川成都610000 [3]中储粮江苏质检中心有限公司,江苏南京210000

出　　处：《粮油食品科技》2024年第3期162-169,共8页Science and Technology of Cereals,Oils and Foods

基　　金：“十四五”国家重点研发计划项目(2022YFE0137500-04)。

摘　　要：采用传统的热裂解法合成了光催化材料——石墨相氮化碳(g-C3N4),研究了其对玉米赤霉烯酮(ZEN)的降解效率。通过X射线衍射(XRD)、傅里叶变换红外(FTIR)、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)和透射电镜(TEM)对g-C3N4结构进行了解析。光催化降解实验表明,在紫外光(254 nm,包括185 nm)下,g-C3N4可诱导光催化效应,释放活性氧自由基,降解ZEN。对ZEN光催化降解的实验条件进行了探索。结果表明,当光催化材料的质量为20mg,紫外灯的波长为254nm(功率为50W),初始浓度为0.5μg/mL,照射时间为60 min时,ZEN的降解率为96.0%。同时,对ZEN粉末样品的光催化降解实验条件进行了优化。结果表明,当光催化材料的质量为800mg、紫外灯的波长为254 nm(功率为50 W)、照射时间为50 min时,ZEN的降解率为80.0%。该结果为光催化降解ZEN提供了理论参考和实践依据。A semiconductor nanomaterial was prepared and its degradation efficiency on zearalenone(ZEN)was investigated.The photocatalytic material,graphitic carbon nitride(g-C3N4),was synthesized by the conventional thermal cracking method,and its structure was analyzed by(X-ray diffraction)XRD,Fourier transform infrared(FTIR),X-ray photoelectron spectroscopy(XPS),scanning electron microscopy(SEM)and transmission electron microscopy(TEM).The photocatalytic degradation experiments showed that g-C3N4 induced photocatalytic effects under ultraviolet light(254 nm,including 185 nm),releasing reactive oxygen radicals to degrade ZEN.The experimental conditions for the photocatalytic degradation of ZEN were explored.The results showed that the degradation rate of ZEN was 96.0%when the mass of the photocatalytic material,the wavelength of the UV lamp,the initial concentration and the irradiation time were 20 mg,254 nm(50 W),0.5μg/mL and 60 min,respectively.Meanwhile,the experimental conditions for the photocatalytic degradation of ZEN powder samples were optimized.The results showed that the degradation rate of ZEN was 80.0%when the mass of the photocatalytic material,the wavelength of the UV lamp,and the irradiation time were 800 mg,254 nm(50 W)and 50 min,respectively.The results could provide a theoretical reference and practical basis for the photocatalytic degradation of ZEN.

关 键 词：玉米赤霉烯酮 石墨相氮化碳 光催化降解 热裂解法 光催化材料 

分 类 号：TS201.3[轻工技术与工程—食品科学]