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首页> 外文期刊>Applied Surface Science >One-step Synthesis Of Nitrogen-doped Zno Nanocrystallites And Their Properties
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One-step Synthesis Of Nitrogen-doped Zno Nanocrystallites And Their Properties

机译：氮掺杂Zno纳米晶体的一步合成及其性能

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Nitrogen-doped ZnO nanocrystallites with primary diameter in the range of 30-50 nm were synthesized rapidly by self-assembly combustion technique using urea and citric acid as fuels, zinc nitrate as oxidant. The variation of adiabatic flame temperature with the various fuel compounds was calculated theoretically according to the thermodynamic concept. XRD, SEM and XPS were used to characterize the as-synthesized products. The anti-ultraviolet and anti-bacterium ability of the products were estimated by testing the UPF index and repressing-bacterium circle diameter of the cotton fabrics, which were treated using the as-synthesized products. The results show that a small quantity of citric acid has excellent coordinated action with urea and accelerates the nitrogen doping reaction course, obtaining perfect nitrogen-doped ZnO nanocrystallites with uniform color and particles size. The analysis of XPS spectrum shows that the nitrogen incorporation produces an N-0 bonding region. The incorporation of nitrogen greatly improves the anti-ultraviolet and anti-bacterium properties of ZnO nanocrystallites, which can be attributed to the change of surface properties of nitrogen-doped ZnO, such as O vacancies and crystal deficiency.
机译：以尿素和柠檬酸为燃料，硝酸锌为氧化剂，通过自组装燃烧技术快速合成了主直径在30-50 nm范围内的氮掺杂ZnO纳米微晶。理论上根据热力学概念计算了绝热火焰温度随各种燃料化合物的变化。 XRD，SEM和XPS用来表征合成后的产品。通过测试棉织物的UPF指数和抑菌圈直径，评估了产品的抗紫外线和抗菌能力，这些织物是用合成后的产品进行处理的。结果表明，少量柠檬酸与尿素具有优异的配位作用，加速了氮掺杂反应过程，得到了色泽均匀，粒径均匀的氮掺杂ZnO纳米微晶。 XPS光谱分析表明，氮的结合产生了N-0键合区。氮的掺入极大地改善了ZnO纳米微晶的抗紫外线和抗菌性能，这可以归因于氮掺杂ZnO的表面性能的变化，例如O空位和晶体缺陷。

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