The "code" for how to use solar energy efficiently has been deciphered. The latest issue of the International Journal of the Royal Society of Chemistry Review published an important breakthrough in the field of solar thermal fuel. The team of Professor Feng Wei from Tianjin University systematically explained the important role of azobenzene in solar thermal fuel for the first time in the world. Contributing to the subversive technology of efficient utilization of solar energy and other light energy, this research is expected to open a new chapter in the efficient use of solar energy.
Solar energy is "inexhaustible" and can be described as one of the most abundant energy sources in nature. Realizing the efficient use of solar energy is also the key to solving energy problems. At present, there are still many defects in human development and utilization of solar energy, such as low efficiency, scattered radiation, and unstable energy storage. The ideal solar thermal fuel will achieve reversible energy conversion and storage within a single material system, with the advantages of zero emissions, easy transportation, recyclability, reproducibility, and on-demand release in the form of heat. Solar thermal fuel has therefore become an important target for global scientists to "hunt".
The Feng Wei team has long been devoted to the development of solar thermal materials and is one of the earliest international scientific research teams focusing on the research of organic molecular photothermal energy. In their research, they found that the azobenzene-carbon nanotube structure is the basic molecular structure for the realization of light and heat energy. In this structure, azobenzene is expected to become a smart "switch" and "memory" for storing thermal materials and releasing solar energy. The molecular structure of azobenzene has a unique "light-induced reversible structural transition characteristic", which can store energy from solar radiation through optical switch molecular structure conversion and spatial rearrangement, and then release the energy in the form of heat to realize light-heat storage Important potential materials with controlled release. (Reporter Sun Yusong correspondent Jiao Defang)
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