It appears you don't have support to open PDFs in this web browser. To view this file, Open with your PDF reader
Abstract
H2O dissociation plays a crucial role in solar-driven catalytic CO2 methanation, demanding high temperature even for solar-to-chemical conversion efficiencies <1% with modest product selectivity. Herein, we report an oxygen-vacancy (Vo) rich CeO2 catalyst with single-atom Ni anchored around its surface Vo sites by replacing Ce atoms to promote H2O dissociation and achieve effective photothermal CO2 reduction under concentrated light irradiation. The high photon flux reduces the apparent activation energy for CH4 production and prevents Vo from depletion. The defects coordinated with single-atom Ni, significantly promote the capture of charges and local phonons at the Ni d-impurity orbitals, thereby inducing more effective H2O activation. The catalyst presents a CH4 yield of 192.75 µmol/cm2/h, with a solar-to-chemical efficiency of 1.14% and a selectivity ~100%. The mechanistic insights uncovered in this study should help further the development of H2O-activating catalysts for CO2 reduction and thereby expedite the practical utilization of solar-to-chemical technologies.
This work reports a single-atom Ni incorporated CeO2 catalyst that boosts the efficiency of solar CO2 reduction under concentrated light irradiation.
You have requested "on-the-fly" machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Show full disclaimer
Neither ProQuest nor its licensors make any representations or warranties with respect to the translations. The translations are automatically generated "AS IS" and "AS AVAILABLE" and are not retained in our systems. PROQUEST AND ITS LICENSORS SPECIFICALLY DISCLAIM ANY AND ALL EXPRESS OR IMPLIED WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES FOR AVAILABILITY, ACCURACY, TIMELINESS, COMPLETENESS, NON-INFRINGMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Your use of the translations is subject to all use restrictions contained in your Electronic Products License Agreement and by using the translation functionality you agree to forgo any and all claims against ProQuest or its licensors for your use of the translation functionality and any output derived there from. Hide full disclaimer
Details




1 Southeast University, School of Chemistry and Chemical Engineering, Nanjing, PR China (GRID:grid.263826.b) (ISNI:0000 0004 1761 0489)
2 Xi’an Jiaotong University, International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an, PR China (GRID:grid.43169.39) (ISNI:0000 0001 0599 1243)
3 School of Energy and Environment, Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Nanjing, PR China (GRID:grid.263826.b)
4 Northeast Forestry University, Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Harbin, PR China (GRID:grid.412246.7) (ISNI:0000 0004 1789 9091)
5 School of Energy and Environment, Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Nanjing, PR China (GRID:grid.412246.7)