The dataset contains raw data supporting the article "Photoelectrochemical comproportionation of pre-treated PET plastics and CO2 to formate".

This work introduces a PEC tandem device constructed from earth-abundant light absorbers and catalysts, featuring a semi-artificial organic photocathode and an all-solution-processed hematite photoanode. The photocathode features a hierarchically structured TiO2 layer to host CO2 converting enzymes, while the photoanode is homogeneously coated with a nickel-based nanosheet co-catalyst. The device achieves the first solar comproportionation of PET plastics and CO2 for the sustainable production of formate, a versatile chemical feedstock with significant applications in a net zero economy. Operating under one sun irradiation without external voltage input, the integrated device produces formate at both electrodes with a high selectivity and partial photocurrent density. This solar-to-chemical technology converts two abundant waste streams into a clean energy carrier and highlights a promising pathway toward advancing a circular economy.

Manuscript - contains Fig1–4: schematics, SEM, TEM, XPS, EDX, LSV, OCP, IPCE, 1H NMR spectra, CPE, formate yield, formate FE, and photo (as PNG, XLSX files)

Supporting Information (SI) - contains FigS1–S27: photo, energy level diagram, OPV characteristics, Mott−Schottky plots, Nyquist plot, UV−vis spectra, SEM, TEM, EDX, XRD, LSV, 1H NMR spectra, CPE, GC, DSC, reaction pathway, and HPLC (as EPS, PDF, JPG, PNG, XLSX files)

For more details about the experimental procedure, instrumentation, and data collection, see the manuscript and also the txt file OPV_Hem_open_data/Readme.txt