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A Derivative of ZnIn2S4 Nanosheet Supported Pd Boosts Selective CO2 Hydrogenation |
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| Authors: | Kuncan Wang Yuanmin Zhu Meng Gu Zhiwei Hu Yu-Chung Chang Chih-Wen Pao Yong Xu Xiaoqing Huang |
| Affiliation: | 1. Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, Collaborative Innovation Center of Advanced Energy Materials, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006 P. R. China
State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 P. R. China;2. Research Institute of Interdisciplinary Science & School of Materials Science and Engineering, Dongguan University of Technology, Dongguan, 523808 P. R. China Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055 P. R. China;3. Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055 P. R. China;4. Max Planck Institute for Chemical Physics of Solids, Nothnitzer Strasse 40, 01187 Dresden, Germany;5. National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu, 30076 Taiwan;6. Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, Collaborative Innovation Center of Advanced Energy Materials, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006 P. R. China;7. State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 P. R. China |
| Abstract: | CO2 hydrogenation to value-added chemicals has been considered as a promising way to reduce CO2 emission and alleviate energy crisis. However, the high-efficiency CO2 hydrogenation process is driven by the current drawbacks of low activity and/or selectivity. Herein, it is demonstrated that 2D S-doped ZnInOx, which evolves from the calcination of ZnIn2S4 nanosheets (ZIS NSs), can serve as a functional support for Pd nanoparticles (NPs) to promote the selective CO2 hydrogenation to CH3OH. Detailed investigations show that ZnIn2S4 will evolve into In2O3 and amorphous S-doped ZnO, on which Pd NPs are preferentially located due to the strong electrophilicity of S. Consequently, the strong interaction between Pd NPs and amorphous S-doped ZnO prevents Pd NPs from sintering and facilitates the selective CO2 hydrogenation to produce CH3OH. The optimal catalyst shows a CO2 conversion of 12.7% with a CH3OH selectivity of 87.4% at 280 °C. This study provides a facile route to regulate catalytic supports and controllably load active species, which may attract great research interests in the fields of heterogeneous catalysis. |
| Keywords: | anti-sintering CO 2 hydrogenation In 2O 3 S doped support ZnIn 2S 4 nanosheets |