Exploring facile fabrication methods for stable, ordered-structure photocatalysts with high performance is critical to realize their practical applications. In this work, a ZnO-based photocatalyst was deposited using a solution-processing ink-jet printing technique. Novel water-based inks were developed with pure ZnO and Mg-doped ZnO nanoparticles, which were synthesized by the polyacrylamide gel method and then modified by polyethylene glycol. The influence of organic solvents, surfactants, and polymers on the surface tension and viscosity of the inks was investigated using an orthogonal experimental design. The printed films annealed at low temperatures exhibited low resistance and high photocatalytic performance for the degradation of methylene blue. These results indicated that ink-jet printed Mg-doped ZnO photocatalyst thin film is promising as a feasible candidate for treating organic pollutants in waste water.

中文翻译：

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喷墨印刷固定化增强纳米结构氧化锌基光催化剂降解亚甲蓝

探索稳定、有序结构的高性能光催化剂的简便制造方法对于实现其实际应用至关重要。在这项工作中，使用溶液处理喷墨印刷技术沉积了 ZnO 基光催化剂。采用聚丙烯酰胺凝胶法合成纯ZnO和Mg掺杂的ZnO纳米颗粒，然后用聚乙二醇改性，开发了新型水性油墨。使用正交实验设计研究了有机溶剂、表面活性剂和聚合物对油墨表面张力和粘度的影响。低温退火的印刷薄膜对亚甲基蓝的降解表现出低电阻和高光催化性能。