Photo-induced CO2 reduction by CH4/H2O to fuels over Cu-modified g-C3N4 nanorods under simulated solar energy

A Novel Photo‐thermochemical Approach for Enhanced Carbon Dioxide Reforming of Methane

“…Under light illumination, Pt‐Si‐CeO 2 exhibits the highest production and reaches 90 and 154 mmol g −1 h −1 for H 2 and CO, respectively, at 30 h, which are more than five and two times higher than those in the dark. Note that the CO and H 2 yields obtained at 600 °C in our work are approximately three orders of magnitude larger than those reported for experiments conducted at temperatures lower than 100 °C . This reveals the importance of using concentrated sunlight to raise the reaction temperature so that the photo‐ and thermocatalytic synergy from PTC‐DRM can be maximized.…”

“…Recently, the use of concentrated solar energy to supply nonpolluting and high‐temperature energy for DRM was developed at both the laboratory and pilot scales; however, the photoenergy from the sun is merely converted into thermal heat, so the reaction is essentially the same as thermocatalytic DRM in nature. On the other hand, photocatalytic DRM operated at near‐room temperature or low temperatures by using semiconductor photocatalysts was demonstrated in laboratory‐scale studies . Unfortunately, the efficiency of low‐temperature photocatalytic DRM is extremely low with syngas production at the magnitude of μmol g −1 h −1 .…”

“…On the other hand, photocatalytic DRM operated at near‐room temperature or low temperatures by using semiconductor photocatalysts was demonstrated in laboratory‐scale studies . Unfortunately, the efficiency of low‐temperature photocatalytic DRM is extremely low with syngas production at the magnitude of μmol g −1 h −1 . Therefore, the efficient utilization of solar energy to drive DRM is of great interest.…”

“…On the other hand, photocatalytic DRM operated at near-roomt emperature or low temperaturesb yu sing semiconductor photocatalystsw as demonstrated in laboratoryscale studies. [6][7][8][9][10][11][12] Unfortunately,t he efficiency of low-temperature photocatalytic DRM is extremelyl ow with syngasp roduction at the magnitude of mmol g À1 h À1 . [7][8][9][10][11][12] Therefore, the effi-cient utilization of solar energy to drive DRM is of great interest.Herein, we report an ovel approach integrating photocatalysis and thermocatalysis in one system to drive DRM at ah igh temperature, namely,p hoto-thermochemical DRM (PTC-DRM), by efficientlyu tilizing concentrated solare nergy to supply both high-energyp hotons( UV andn ear-UV)t od rive photocatalysis and thermalenergy (visible and IR) to drive thermocatalysis.…”

Advances in catalytic conversion of methane and carbon dioxide to highly valuable products

“…Comparing with conversional O 2 ‐OCM whose maximum C 2 yield ranges from 16% to 27% with selectivity 72%‐82%, CO 2 ‐OCM exhibits a lower maximum C 2 yield (6%) but comparable selectivity . Furthermore, to achieve higher methane conversion at low temperatures, nonconventional catalytic systems have also been reported, such as catalytic reactions in an electric field, catalytic reactions with discharge, and photocatalytic reactions …”