Abstract
The heavy-metal-free photocatalytic system, in which carbon nitride is coated on polylactic acid (PLA) as biodegradable plastic through a simple dip coating method, was used for dye decomposition under visible light irradiation. Solvent selection, solvent concentration, and the number of coatings for dip coating were investigated to optimize the conditions for loading carbon nitride on PLA. Carbon nitride cannot be coated on PLA in water, but it can be strongly coated by decomposing the surface of PLA with ethanol or chlorobenzene to promote physical adsorption and activate surface. The number of dip coatings also affected the photocatalytic decomposition ability. The photocatalytic system was able to decompose the dye continuously in the flow method, and dye (rhodamine B) was decomposed by about 50% at a residence time of 12 min (flow rate 0.350 mL/min) for 30 h.
Highlights
Photocatalytic Rhodamine B (RhB) DecompositionSunlight is semi-permanent and clean energy, so it has been studied in fields such as power generation [1], interfacial evaporation [2], and photocatalysis [3]
This study provides a photocatalytic flow system for decomposing organic materials that do not use heavy metals for both polylactic acid (PLA) as a substrate and nanotube C3 N4 as a photocatalyst to emphasize environmental friendliness (Supplementary Table S1)
In order to compare the differences between the prepared photocatalytic systems, we changed the experimental conditions to Table 2 and conducted RhB degradation experiments
Summary
Sunlight is semi-permanent and clean energy, so it has been studied in fields such as power generation [1], interfacial evaporation [2], and photocatalysis [3]. Most the synthesized photocatalysts are powders, and they are industrially disadvantageous because they are difficult to recover after performing the photocatalytic activity in water To solve this problem, methods of photocatalytic coating on various substrates were investigated [11,12]. PLA’s excellent thermal stability and mechanical properties allow it to be processed on standard plastic molding equipment to yield molded parts, films, or fibers. It is used as a green chemical plastic to replace conventional petrochemical-based polymers for industrial applications. This study provides a photocatalytic flow system for decomposing organic materials that do not use heavy metals for both PLA as a substrate and nanotube C3 N4 as a photocatalyst to emphasize environmental friendliness (Supplementary Table S1)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
