Mesoporous single crystals have unique potential in catalysis,but remain unexplored owing to the enormous synthetic challenge that they pose.Herein,we report a facile soft-template method to prepare palladium(Pd)and P...Mesoporous single crystals have unique potential in catalysis,but remain unexplored owing to the enormous synthetic challenge that they pose.Herein,we report a facile soft-template method to prepare palladium(Pd)and Pd alloy nanocubes with single-crystallinity and abundant mesoporosity.The successful formation of these exotic nanostructures essentially relies on the cointroduction of cetyltrimethylammonium chloride as the surfactant template and extra Cl^(−) ions as the facet-selective capping agent under well controlled experimental conditions.Thanks to their large surface areas and penetrating mesoporous channels,our products exhibit a great performance for electrochemical CO_(2) reduction.The best sample from alloying palladium with copper enables the efficient formate production with high selectivity(90∼100%)over a broad potential range,and great stability even under the working potential as cathodic as −0.5 V versus a reversible hydrogen electrode.These performance metrics are far superior to previous Pd-based materials,and underscore the structural advantages of our products.展开更多
基金the Natural Science Foundation of Jiangsu Province(no.BK20180723)the Open Project of State Key Laboratory of Supramolecular Structure and Materials(no.sklssm2021011)+3 种基金the program of Jiangsu Province Innovation Team for financial supportthe Collaborative Innovation Center of Suzhou Nano Science and Technology for their supportthe Natural Science Foundation of Jiangsu Province(no.BK20191366)for its supportthe National Natural Science Foundation of China(no.21902114)for its support.
文摘Mesoporous single crystals have unique potential in catalysis,but remain unexplored owing to the enormous synthetic challenge that they pose.Herein,we report a facile soft-template method to prepare palladium(Pd)and Pd alloy nanocubes with single-crystallinity and abundant mesoporosity.The successful formation of these exotic nanostructures essentially relies on the cointroduction of cetyltrimethylammonium chloride as the surfactant template and extra Cl^(−) ions as the facet-selective capping agent under well controlled experimental conditions.Thanks to their large surface areas and penetrating mesoporous channels,our products exhibit a great performance for electrochemical CO_(2) reduction.The best sample from alloying palladium with copper enables the efficient formate production with high selectivity(90∼100%)over a broad potential range,and great stability even under the working potential as cathodic as −0.5 V versus a reversible hydrogen electrode.These performance metrics are far superior to previous Pd-based materials,and underscore the structural advantages of our products.
