Ni-Doped In₂O₃ Photothermal Coupling Catalyzed Boosted Carbon Dioxide Hydrogenation to Methanol

The extensive use of fossil fuels has resulted in large amounts of carbon dioxide being emitted into the air and has led to a number of environmental problems. Given the abundance of both carbon dioxide and sunlight in the earth's atmosphere, converting solar energy into chemical energy by photothermally catalyzing carbon dioxide hydrogenation to produce methanol is a potential strategy. By using the coprecipitation approach, a Ni-doped In2O3 catalyst was created, and its compositional valence, morphology, specific surface area, band gap, and other properties were assessed by XRD, XPS, TEM, BET, H-2-TPR, CO2-TPD, and UV-vis characterization. Methanol production from carbon dioxide hydrogenation is stable and effective under lower pressure (1 MPa) photothermal settings, with an efficiency of 63.4 g(MeOH)h(-1)kg(cat)(-1), which is approximately 120% higher than that of pure In2O3 under the same circumstances.