Raw data for manuscript 'Conversion of polyethylene waste into gaseous hydrocarbons via integrated tandem chemical – photo/electrocatalytic processes'. Includes GC and HPLC data - contains product analysis data for all photo- and electrocatalytic experiments discussed in Figures 1, 2, 3, S4, S16-17 and Tables S1, S3, S4-11, S13-S17 (Excel). Other Characterization - contains UV-Vis, XRD, O2 quantification, Cyclovoltamertry, NMR for Figure S2, S6, S7, S9, S13-15 and Table S12 (Origin, Excel, NMR raw data).