The reporter learned from the University of Science and Technology of China on the 15th that the school's Hefei National Research Center for Microscale Materials Science and the Faculty of Chemistry and Materials Science had a research group led by Professor Zeng Jie. With the composition of adjustable cadmium sulphoanisole alloy nanorods as a catalyst, Efficient reduction of carbon dioxide to syngas, which is a catalyst for nanosize sulfur-selenide alloy nanorods, shows high activity and high stability in carbon dioxide reduction and regulates the composition ratio of syngas over a wide range. The results recently published in the internationally renowned "Advanced Materials" magazine.
Syngas, a mixture of carbon monoxide and hydrogen, is an important synthetic feedstock for petrochemicals, and the optimal compositional ratio of syngas is also different for different chemical processes.Traditional methods of preparing syngas include gasification of coal and In contrast, the use of carbon dioxide and water as feedstock to electrically reduce carbon dioxide in aqueous solution is an ideal method for the sustainable production of syngas, however, it is very difficult to present a catalyst for the electricity reduction of carbon dioxide While ensuring a high current density, the composition of the syngas is controlled over a wide range.
In response to this problem, researchers using liquid phase synthesis technology, the recent design and synthesis of components adjustable CdS alloy nanorods catalyst researchers found that the higher the selenium content in the catalyst, the middle of the reaction of hydrogen The more the body, the higher the proportion of hydrogen components in the syngas product.The study shows that the ratio of carbon monoxide to hydrogen in the product syngas can be freely between 4: 1 and 1: 4 at overpotential of -1.2 V Adjustment.
In addition, in the stability test of continuously using the catalyst for 10 hours, the current density remained basically stable, and the composition ratio of the product syngas remained substantially unchanged.
