A one‐step technique for the deposition of superhydrophilic TiO₂@carbon nanocomposites is described in this study. The nanocomposites are synthesized by injecting TiO₂ nanoparticles suspended in isopropanol into a dielectric barrier discharge operating at atmospheric pressure (AP‐DBD) generated in an N₂/N₂O gas mixture. The influence of the voltage (3–8 kV) applied to a 2‐kHz‐operated AP‐DBD on the wettability of the as‐deposited TiO₂@C nanocomposites is examined. The water contact angle is drastically reduced from 93° for the reference TiO₂ powder to <5° for the deposited nanocomposite. This superhydrophilicity is not caused by the increase of the surface roughness determined by atomic force microscopy measurement but rather by the higher density of graphitic compounds at the surface, as confirmed by X‐ray photoelectron spectroscopy measurements.

中文翻译：

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大气等离子体介电势垒放电：生产超亲水性TiO2 @碳纳米结构的简单途径

在这项研究中描述了一步沉积超亲水性TiO ₂ @碳纳米复合材料的技术。通过将悬浮在异丙醇中的TiO ₂纳米颗粒注入到在N ₂ / N ₂ O气体混合物中产生的大气压下（AP-DBD）的介电势垒放电中，可以合成纳米复合材料。研究了施加在2 kHz的AP-DBD上的电压（3-8 kV）对沉积的TiO ₂ @C纳米复合材料润湿性的影响。参比TiO ₂的水接触角从93°大大降低对于沉积的纳米复合材料，粉末应<5°。这种超亲水性不是由原子力显微镜测量确定的表面粗糙度增加引起的，而是由X射线光电子能谱测量证实的，表面上石墨化合物的较高密度引起的。