This V2 dataset is an updated and corrected version of the old V1 dataset (https://doi.org/10.17863/CAM.114082). The dataset contains raw data supporting the article “Direct air capture of CO2 for solar fuels production in flow”. A gas-phase dual bed flow reactor has been developed for the capture and conversion of CO2 from air into synthesis gas using sunlight. The dataset is divided into four key parts: i) CO2 Utilisation: Contains all CO2 photoreduction data, ii) Direct Air Capture: Contains all CO2 capture from air data, iii) Integrated Capture and Utilisation: contains all CO2 capture and photoconversion data, and iv) Material Characterisation: contains BET, PXRD, STEM, EDS, TGA, UV-VIS-IR, and XPS data. For more details about experimental procedure, instrumentation, and data collection, see the manuscript.