Fabrication and Application of Photocatalytic Composites and Water Treatment Facility Based on 3D Printing Technology

Polymers

Zhirui Mai¹  Xianming Dong¹  Dongsong Lin¹  Wuyi Zhou¹  Di Liu¹  Wenxu Zheng¹  Ziyao Chen¹  Qiongzhi Gao² 

[1] Biomass 3D Printing Materials Research Center, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China;Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangzhou 510642, China;

关键词: 3D printing;    water treatment equipment;    polylactic acid;    titanium dioxide;    composites;    photocurable coating;   

DOI  :  10.3390/polym13132196

来源: DOAJ

【 摘 要 】

Currently, the degradation of organic pollutants in wastewater by photocatalytic technology has attracted great attention. In this study, a new type of 3D printing material with photocatalytic activity was first prepared to print a water treatment equipment, and then a layer of silver-loaded TiO₂ was coated on the equipment to further improve the catalytic degradation performance. The composite filaments with a diameter of 1.75 ± 0.05 mm were prepared by a melt blending method, which contained 10 wt% of modified TiO₂ and 90 wt% of PLA. The silver-loaded TiO₂ was uniformly coated on the equipment through a UV-curing method. The final results showed that those modified particles were uniformly dispersed in the PLA matrix. The stable printing composite filaments could be produced when 10 wt% TiO₂ was added to the PLA matrix. Moreover, the photocatalytic degradation performance could be effectively improved after 5 wt% of silver loading was added. This novel facility showed good degradability of organic compounds in wastewater and bactericidal effect, which had potential applications for the drinking water treatment in the future.

【 授权许可】

Unknown