中文摘要：水溶性脱氧雪腐镰刀菌烯醇（DON）是水环境质量潜在的有机污染物，对水质构成重大威胁。DON是由镰刀菌属霉菌产生的有毒次生代谢物，是谷物商品中最重要的霉菌毒素之一，在湿法处理受脱氧雪腐镰刀菌烯醇污染的粮食的过程中富集。本研究中，通过简单的一步水热法制备了石墨烯/ZnO杂化材料，在紫外光照射下具有优越的光催化降解DON的活性。总之，本研究提供了制备高性能光催化剂石墨烯/ZnO杂化材料的方法及促进其在霉菌毒素解毒和环境保护中的应用的新见解。
外文摘要：Water-soluble deoxynivalenol (DON) pose a major threat as a potential organic pollutant to water environmental quality. DON is a toxic secondary metabolite produced by molds of the Fusarium genus and one of the most important mycotoxins in cereal commodities, which can be enriched from the contaminated grain by deoxynivalenol in the process of wet processing. In this work, graphene/ZnO hybrids has been successfully prepared via a simple one-step hydrothermal method and exhibited superior photocatalytic activity for the photodegradation of DON under the irradiation of UV light. The UV light photocatalytic activity of graphene/ZnO hybrid GZ0.3 was 3.1 times than pure ZnO and about 99% of DON (15 ppm) could be photodegraded within 30 min totally while there were three peaks of intermediate products appeared. The ESI/MS analysis confirmed the presence of DON and degradation product with the secondary mass spectrogram in the positive ESI mode. Overall, this work could provide new insights into the fabrication of graphene/ZnO hybrids composite as high performance photocatalysts and facilitate their application in the mycotoxin detoxification and environmental protection issues.
外文关键词：Photocatalysis；ZnO；Graphene；Hybridization；Deoxynivalenol
作者：Bai, XJ；Sun, CP；Liu, D；Luo, XH；Li, D；Wang, J；Wang, NX；Chang, XJ；Zong, RL；Zhu, YF
作者单位：Acad State Adm Grain PRC
期刊名称：APPLIED CATALYSIS B-ENVIRONMENTAL
期刊影响因子：8.328
出版年份：2017
出版刊次：5
点击下载：在水悬液中用石墨烯/ZnO杂化材料光催化脱氧雪腐镰刀菌烯醇降解