期刊
ACS APPLIED MATERIALS & INTERFACES
卷 5, 期 21, 页码 10953-10959出版社
AMER CHEMICAL SOC
DOI: 10.1021/am4031196
关键词
Fusarium graminearum macroconidia; TiON/PdO nanoparticles; photocatalytic disinfection; visible light; fluorescence staining
资金
- National Natural Science Foundation of China [51102246]
- Knowledge Innovation Program of Institute of Metal Research, Chinese Academy of Sciences [Y0N5A111A1]
- Youth Innovation Promotion Association, Chinese Academy of Sciences [Y2N5711171]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry, China
Fusarium graminearum is the pathogen for Fusarium head blight (FHB) on wheat, which could significantly reduce grain quality/yield and produce a variety of mycotoxins posing a potential safety concern to human foods. As an environmentally friendly alternative to the commonly used chemical fugicides, a highly effective photocatalytic disinfection of F. graminearu m macroconidia under visible light illumination was demonstrated on a visible-light-activated palladium-modified nitrogen-doped titanium oxide (TiON/PdO) nanoparticle photocatalyst. Because of the opposite surface charges of the TiON/PdO nanoparticles and the F. graminearum macroconidium, the nanopartides were strongly adsorbed onto the macroconidium surface, which is beneficial to the photocatalytic disinfection of these macroconidia. The photocatalytic disinfection mechanism of TON/ PdO nanoparticles on these macroconidia could be attributed to their cell wall/membrane damage caused by the attack from reactive oxygen species (ROSs) as demonstrated by the fluorescence/phase contrast microscopy observations, while a breakage of their cell structure was not necessary for their loss of viability.
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