Increasing efforts have been devoted to cellulose-based multifunctional biomaterials for environmental applications. In this study, solvothermal method combined with impregnation reduction process of Cu2+ has been developed to create versatile Cu2O/H2Ti3O7/CP (cellulose paper) biocomposite films that demonstrates efficacy in treating wastewater from organic compounds, disinfecting it from microbes and also purifying the air from volatile organic compounds (VOCs). H2Ti3O7 nanosheets decorated with Cu2O nanoparticles exhibit an excellent visible-light responsibility. Furthermore, the Cu2O/H2Ti3O7/CP biocomposite film demonstrated enhanced efficacy in removing aniline in the liquid phase and 1-propanol in the gaseous phase compared to the H2Ti3O7/CP. This enhanced photocatalytic activity is primarily due to the synergistic effect between Cu2O and H2Ti3O7, which suppresses the recombination of charge carriers and improves their mobility. Reuse tests confirm the stability of the prepared hybrid photocatalyst. Moreover, the biocomposite exhibits good antimicrobial properties, which contributed to the effective inactivation of Escherichia coli. This proves its versatility as a photocatalyst for a broad range of biological and environmental applications.

中文翻译：

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Cu2O/H2Ti3O7/纤维素生物杂交薄膜，在太阳能驱动的环境净化中具有高效的光催化和抗菌活性


人们越来越多地致力于用于环境应用的纤维素基多功能生物材料。在这项研究中，溶剂热法与 Cu2+ 的浸渍还原工艺相结合，创造了多功能的 Cu2O/H2Ti3O7/CP（纤维素纸）生物复合膜，该薄膜在处理有机化合物废水、消毒微生物以及净化空气中挥发性有机化合物 （VOC） 方面表现出功效。用 Cu2O 纳米颗粒装饰的 H2Ti3O7 纳米片表现出优异的可见光性能。此外，与 H2Ti3O7/CP 相比，Cu2O/H2Ti3O7/CP 生物复合膜在去除液相中的苯胺和气相中的 1-丙醇方面表现出更强的功效。这种增强的光催化活性主要是由于 Cu2O 和 H2Ti3O7 之间的协同作用，它抑制了载流子的复合并提高了它们的迁移率。再利用测试证实了制备的杂化光催化剂的稳定性。此外，该生物复合材料表现出良好的抗菌性能，有助于有效灭活大肠杆菌。这证明了它作为光催化剂的多功能性，适用于广泛的生物和环境应用。