A novel strategy to construct supported Pd nanocomposites with synergistically enhanced catalytic performances
- 171 Downloads
We report a facile protocol for the one-pot preparation of monodisperse Pd nanoparticles (NPs) supported on ultrathin NiCl2 nanosheets (NSs). The effective protocol can be described as in situ reduction–oxidation–assembly to create Pd/NiCl2 nanocomposites and is applicable for the development of stable yet highly active Pd-based heterogeneous catalysts for organic transformations. The Pd/NiCl2 composite displayed synergistically enhanced catalytic activity, high stability, and good recyclability for the tested model oxidation reaction. The in situ nucleation and growth of NiCl2 NS around Pd NPs guaranteed a clean metal–support interface and greatly facilitated the catalytic reaction. This work provides a novel synthesis method for supported Pd nanocomposites suitable for many important applications.
KeywordsPd nanocomposites one-pot synthesis activity stability
Unable to display preview. Download preview PDF.
We acknowledge the National Key Research and Development Program from the Ministry of Science and Technology of China (No. 2016YFC0207102), the National Natural Science Foundation of China (NSFC) (Nos. 21501034, 21503053 and 21573050) and Chinese Academy of Sciences (No. XDA09030303) for the funding support. This work made use of the resources of the Beijing National Center for Electron Microscopy at Tsinghua University. We thank Dr. Haijun Yang and Xixi Liang from Analysis Center of Department of Chemistry at Tsinghua University for helping with ESR study.
- Pélisson, C. H.; Nakanishi, T.; Zhu, Y.; Morisato, K.; Kamei, T.; Maeno, A.; Kaji, H.; Muroyama, S.; Tafu, M.; Kanamori, K. et al. Grafted polymethylhydrosiloxane on hierarchically porous silica monoliths: A new path to monolith-supported palladium nanoparticles for continuous flow catalysis applications. ACS Appl. Mater. Interfaces 2017, 9, 406–412.CrossRefGoogle Scholar
- Yuwen, L. H.; Xu, F.; Xue, B.; Luo, Z. M.; Zhang, Q.; Bao, B. Q.; Su, S.; Weng, L. X.; Huang, W.; Wang, L. H. General synthesis of noble metal (Au, Ag, Pd, Pt) nanocrystal modified MoS2 nanosheets and the enhanced catalytic activity of Pd-MoS2 for methanol oxidation. Nanoscale 2014, 6, 5762–5769.CrossRefGoogle Scholar
- Lee, J. H.; Ryu, J.; Kim, J. Y.; Nam, S. W.; Han, J. H.; Lim, T.-H.; Gautam, S.; Chae, K. H.; Yoon, C. W. Carbon dioxide mediated, reversible chemical hydrogen storage using a Pd nanocatalyst supported on mesoporous graphitic carbon nitride. J. Mater. Chem. A 2014, 2, 9490–9495.CrossRefGoogle Scholar
- Tao, Y.; Lin, Y. H.; Huang, Z. Z.; Ren, J. S.; Qu, X. G. Incorporating graphene oxide and gold nanoclusters: A synergistic catalyst with surprisingly high peroxidase-like activity over a broad pH range and its application for cancer cell detection. Adv. Mater. 2013, 25, 2594–2599.CrossRefGoogle Scholar
- Tian, J. Q.; Liu, Q.; Asiri, A. M.; Qusti, A. H.; Al-Youbi, A. O.; Sun, X. P. Ultrathin graphitic carbon nitride nanosheets: A novel peroxidase mimetic, Fe doping-mediated catalytic performance enhancement and application to rapid, highly sensitive optical detection of glucose. Nanoscale 2013, 5, 11604–11609.CrossRefGoogle Scholar