CO2 hydrogenation to methanol is a prospective approach to alleviate both global warming and energy problems. CuO/ZnO is proven to be an efficient catalyst, in which ZnO carriers prepared by different methods directly affect the catalytic activity. Herein, a novel method is used to apply a zeolite imidazolate framework‐8 (ZIF‐8)‐derived ZnO to the carrier of copper‐based catalyst. In the process of thermal transformation from ZIF‐8 to ZnO, the carrier ZnO‐400 is specially modified by carbon inherited from ZIF‐8, and the corresponding CuO/ZnO‐400 catalyst still has special carbon modification, which is confirmed by transmission electron microscopy (TEM), X‐ray photoelectron spectroscopy (XPS), and Raman spectroscopy. Meanwhile, the pyrolysis temperature of ZIF‐8 affects the surface oxygen defects of ZnO and the CuO/ZnO‐400 catalyst has a large oxygen vacancy concentration, which is proven by X‐ray diffraction (XRD) and XPS. Consequently, the CuO/ZnO‐400 catalyst achieves the best CO2 conversion and methanol selectivity due to more oxygen vacancies and carbon modification.
Three-dimensional (3D) printing is regarded as a novel technique to realize the customized production of films. However, the relative lack of printable materials with excellent mechanical properties and tailored functionalities seriously restricts its wide application. Herein, a promising multifunctional 3D printing filament was fabricated by incorporating lignin into the polylactic acid (PLA) matrix and firstly applied to film production. The results indicate that lignin was an excellent mechanical reinforcement of the PLA matrix, especially for toughening. Only 0.5% lignin doping improved the toughness by 81.8%. Additionally, 3D-printed films with 0.5–5% lignin exhibited excellent ultraviolet (UV)-blocking capability of 87.4–99.9% for UVB and 65.6–99.8% for UVA, as well as remarkable antioxidant properties, ranging from 24.0% to 79.0%, and high levels of haze, ranging from 63.5% to 92.5%. Moreover, the prepared PLA/lignin (P/L) films based on 3D printing achieved the customization of film production and have potential applications in the fields of packaging, electronic products, medical care, and so forth. Overall, this work not only enriches the 3D printing composites with tailored multifunctionality but also brings the promising potential for the production of customized films.
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