In this paper, we explore the application of powdered carbon and 3D-printed carbon monoliths prepared by
carbonization of a tailored photopolymer. We demonstrate the efficiency of the developed carbonaceous samples
in removing paracetamol (PCM) and sulfamethoxazole (SMX), used as model contaminants. Our results
demonstrate that carbon samples are active in CWPO, and their catalytic activity is significantly improved by
applying nitric acid and urea functionalization methods. The characterization results showed the pure carbon
nature of the material (no ashes), their unique structure defects proven by Raman (D/G > 1.8), textural properties
(SBET = 291–884 m2/g) and their surface chemistry, which was addressed by pHPZC (2.5–7.5), acidity
(312–2375 μ mol gcat 1) and basicity (117–653 μ mol gcat 1) determination and XPS of highlighted materials (N1s =
0–3.51 at.%, O1s = 7.1–15.3 at.%). Using desorption assays, our study reveals the adsorption role for pollutant
degradation by CWPO using carbon monolithic samples. At last, we demonstrated the ability of functionalized
3D-printed carbon monoliths to keep degradation of PCM and total organic carbon (TOC) above 85 % and 80 %,
respectively, during 48 h in a continuous flow CWPO system. Sulfamethoxazole degradation in continuous
system was also studied to validate the catalyst versatility, achieving 81 % and 79 % pollutant degradation and
TOC abatement, respectively, during 48 h on stream. The characterization of the recovered catalyst provides
further insights into the absence of structural modifications after the reaction, reinforcing the stability and
reusability characteristic of the 3D-printed carbon catalyst.
