Recently, the team of Professor Feng Wei of Tianjin University successfully synthesized a new type of two-dimensional layered germanium silane material with adjustable band gap. This new material can be used as a photocatalyst with excellent performance. Under normal temperature illumination, hydrogen can be efficiently prepared and carbon dioxide can be efficiently reduced to carbon monoxide. Relevant research results have been published online in the international authoritative journal Nature · communication. With the development of industrial society, "greenhouse effect" has become a major environmental challenge facing mankind. As we all know, the carbon dioxide emitted by fossil fuel combustion is the main cause of "greenhouse effect". With the increasing concentration of carbon dioxide in the atmosphere, the global temperature is warming gradually, and the disastrous weather is increasing year by year. How to make hydrogen and other green energy efficiently and how to realize the transformation and utilization of carbon dioxide have become the focus of global scientists. Because of its stable, efficient and clean characteristics, "photocatalytic technology" is being highly concerned and recognized by the academic community. This is an environment-friendly purification technology. Its principle is based on the oxidation-reduction ability of photocatalyst under light conditions, so as to purify pollutants, synthesize and transform substances. Among them, the performance of photocatalyst is the core of photocatalysis technology. The efficiency of this performance determines the efficiency of catalytic reaction. On the basis of theoretical calculation and structural design, Professor Feng Wei's team of Tianjin University realized band gap regulation of binary two-dimensional germanium and silicon-based materials for the first time by accurately controlling the content of germanium and silicon elements, and obtained a new material, two-dimensional layered germanosilane with adjustable band gap. This novel two-dimensional material has excellent photocatalytic performance due to its suitable band gap structure, wide spectral absorption, high specific surface area and surface chemical activity. The experimental results show that the material can be used as photocatalyst to produce hydrogen efficiently under normal temperature, and the efficiency of reducing carbon monoxide can reach tens or even hundreds of times of the current mainstream photocatalyst materials. "This new material shows the characteristics of high efficiency, green and environmental protection." According to Professor Feng Wei, the material is also an ideal material for the preparation of high-performance nano energy converters and nano optoelectronic devices, which is expected to provide material basis and technical support for the electronic structure regulation and optoelectronic performance improvement of new semiconductor materials in the future, "with broad application prospects in many fields." Source: Tianjin University, reprinted for reference only. In case of infringement, please contact to delete. Article link: https://www.nature.com/articles/s41467-020-15262-4 welcome people in the industry to join the "group of Asian chemical CCUs and CO2 chemicals", please add the following "group administrator" wechat (please provide the name of the unit when adding, please provide the work card after adding), and add into the group after being approved by the group manager.
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