| Optical microscopy, exterior and interior surfaces, 0, 0.25, 0.75, and 1.00 % Ti(OEt)4 | The exterior side had more TiO2 deposition than the interior side; deposition increased on both sides with increasing precursor concentration |
|---|---|
| SEM, uncoated cellulose | Rough texture and a three-dimensional structure with cellulosic bridges between fibres |
| SEM, cellulose loaded with 0.75 % Ti(OEt)4 | TiO2-coated fibres, crevasses where TiO2 formed on cellulose bridges, globular TiO2 aggregates, and a consistent but heterogeneous TiO2 coating |
| Methylene-blue-adsorption surface area, 0.75 % Ti(OEt)4 | 333 ± 63 cm² of TiO2 per cm² of cellulose |
| UV transmittance, 0.75 % Ti(OEt)4, dry | 2.92 % |
| UV transmittance, 0.75 % Ti(OEt)4, wet with 20.00 µL/cm² water | 18.6 % |
| EDS atomic composition, fibre (%) | C K 74.35, O K 24.81, Au L not reported, Ti K 0.83 |
| EDS atomic composition, aggregate (%) | C K not reported, O K 73.28, Au L 0.79, Ti K 25.92 |
| EDS atomic composition, crevasse (%) | C K not reported, O K 40.52, Au L 2.13, Ti K 57.36 |
| EDS gold peaks | Attributed to sputtering |
Jordan Chong, Muhammad Shamim Al Mamun, M. Rashed Khan. “Photocatalyst-loaded cellulose paper strip to analyze PFAS.” ChemRxiv (). https://doi.org/10.26434/chemrxiv.15007477/v1
Supporting information is appended to the main paper