Magnetic g-C3N4/NiFe2O4 composite with enhanced activity on photocatalytic disinfection of Aspergillus flavus
Magnetic g-C3N4/NiFe2O4 composite with enhanced activity on photocatalytic disinfection of Aspergillus flavus
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磁性g-C3N4/NiFe2O4复合材料对黄曲霉菌光催化消毒活性增强
DOI：
10.1016/j.cej.2021.129417
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发表时间：
2021-03
影响因子：
15.1
通讯作者：
Li Peiwu
中科院分区：
文献类型：
--
作者：
Sun Di;Mao Jin;Cheng Ling;Yang Xianglong;Li Hui;Zhang Liangxiao;Zhang Wen;Zhang Qi;Li Peiwu
黄曲霉可造成农作物损失，并产生真菌毒素，对人类健康造成严重威胁。化学农药或杀菌剂的大量使用可能会造成环境问题和真菌耐药性。因此，开发一种新型、低抗性、环保型的方法来防治和减少该真菌的侵染具有重要意义。在本论文中，我们展示了一种高效、环境友好的光催化杀灭黄曲霉的方法。复合材料由菱形NiFe2O4纳米薄片和g-C3N4纳米薄片组成，0.2 g-C3N4/NiFe2O4(质量比)在90min可见光照射下具有良好的杀菌活性，杀菌率可达90%以上。有效的杀菌活性归因于良好的电荷分离、良好的光电性能和合适的能带结构。结果表明，·O2、−和·OH是光催化消毒中的主要活性自由基物种。孢子荧光染色、生物扫描电子显微镜及胞外蛋白质和DNA的检测表明，这些菌种的侵袭可导致真菌细胞结构的破坏和胞内内容物的泄漏。此外，该复合材料对花生黄曲霉也表现出较高的光催化杀菌活性，可将黄曲霉毒素B1从315.21µg/kg−1降至18.50µg/kg−1。这一有效的方法可被认为是控制黄曲霉污染的一种潜在途径，也可为今后其他病原真菌的缓解提供参考。
Aspergillus flavuscan cause crop loss and produce mycotoxin that bring serious threats to human health. The large usage of chemical pesticides or fungicides might cause environmental problems and fungal resistance. Therefore, developing the novel, low possibility of resistance and pro-environment way to control and reduce this fungi is meaningful. Herein, an efficient, environmental-friendly and photocatalytic method to disinfectAspergillus flavuswas demonstrated on magnetic and Z-schematic composites. The composites were composed of rhombic NiFe2O4nanosheets and g-C3N4nanosized sheets, and 0.2 g-C3N4/NiFe2O4(mass ratio) showed the excellent activity with above 90% disinfection rate under 90 min visible light irradiation. The efficient disinfection activities were ascribed to the favorable charges separation, well photoelectric properties and suitable band structure. It was found that the •O2−and •OH were the main active radical species in photocatalytic disinfection. The attack of these species could cause the destruction of fungal cell structure and the leakage of intracellular contents as proved by the fluorescence staining of spores, biological scanning electron microscope and the detection of extracellular protein and DNA. Moreover, the composites also showed high photocatalytic disinfection activity ofAspergillus flavuson peanuts, which can reduce aflatoxin B1from 315.21 µg kg−1to 18.50 µg kg−1. This efficient method might be considered as a potential way to control the contamination ofAspergillus flavus, and as a reference to the mitigation of other pathogenic fungi in future.
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DOI：
10.1146/annurev-pathol-052016-100342
发表时间：
2017-01-24
期刊：
Annual review of pathology
影响因子：
--
作者：
Wheeler ML;Limon JJ;Underhill DM
通讯作者：
Underhill DM
影响因子：
9.5
作者：
Jingtao Zhang;Yang Liu;Qi Li;Xiaoping Zhang;J. Shang
通讯作者：
Jingtao Zhang;Yang Liu;Qi Li;Xiaoping Zhang;J. Shang
影响因子：
64.8
作者：
Felicia Wu
通讯作者：
Felicia Wu
致密均匀的TiO2@g-C3N4核壳量子异质结用于光催化降解四环素抗生素
影响因子：
22.1
作者：
Wang, Wei;Fang, Jiaojiao;Lu, Chunhua
通讯作者：
Lu, Chunhua
影响因子：
10.9
作者：
Hang Ngoc Nguyen;Chaves-Lopez, Clemencia;Rodrigues, Debora E.
通讯作者：
Rodrigues, Debora E.