Angelw: academician Yu Jianyong of Donghua University and research team Ding bin have made the latest research results in the field of room temperature nitrogen fixation with fiber-like black phosphorus based double active catalyst

Recently, the research team of nanofibers led by academician Yu Jianyong and researcher Ding bin of the textile science and technology innovation center of Donghua University has made important progress in the research of fiber-like black phosphorus based double active catalyst for room temperature nitrogen fixation "Stable agreement of black phosphorous quantum dots on black tin oxide nanotubes: a robust double active electrocatalyst for high efficiency nitrogen fixation.", Double active electrocatalytic toward efficient nitrogen fixation, DOI: 10.1002/anie.201908415) was published in the famous journal of chemistry, angelw Chem Int ed., DOI: 10.1002/anie.201908415 The first author of this paper is researcher Liu Yitao and the corresponding author is researcher Ding bin The synthesis of ammonia by Haber Bosch method has laid the foundation of modern organic industry However, this method relies on high temperature and high pressure for artificial nitrogen fixation, with high energy consumption and large pollution In this context, electrocatalytic room temperature nitrogen fixation emerged as the times require - it is a new technology of sustainable, pollution-free, economic and safe synthetic ammonia At present, the catalysts for room temperature nitrogen fixation mainly use precious metals The empty d orbital can accept the electrons of n ≡ n triple bond, thus weakening the bond energy of n ≡ n triple bond However, rare resources and expensive prices of precious metals can not meet the needs of industrial ammonia synthesis, so the development of high-performance and low-cost catalysts has become a research hotspot in the world Facing this challenge, Ding Bin's research team reported a new non-metallic catalyst, black phosphorus quantum dots In order to further improve their catalytic performance, they synthesized fiber-like black tin dioxide rich in oxygen vacancy by low-temperature reduction method, and uniformly loaded black phosphorus quantum dots through coordination self-assembly Black tin dioxide has excellent conductivity and catalytic activity, which can be used as an active matrix in the electrocatalytic process In addition, the formation of Sn-P coordination bond is beneficial to the carrier interface transport and the structural stability Due to the synergistic effect between the two, the prepared fiber-like double active catalyst showed significantly increased ammonia yield (48.87 μ g h – 1 mgcat – 1) and Faraday efficiency (14.6%) At the same time, the catalyst still has excellent catalytic activity after 12 hours of continuous electrolysis, which opens a new way for the development of the next generation of room temperature nitrogen fixing catalyst with high performance and low cost The research results have been greatly supported by the National Natural Science Foundation, Shanghai Natural Science Foundation and key laboratory base construction project of the Ministry of education of textile fabrics.