Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Yunnan, 650500, P. R. China.
School of Chemistry and Environment, Yunnan Minzu University, Yunnan, 650500, P. R. China.
Small. 2023 Jul;19(28):e2301169. doi: 10.1002/smll.202301169. Epub 2023 Apr 3.
With the widespread application of lithium iron phosphate batteries, the production capacity of the yellow phosphorus industry has increased sharply, and the treatment of the highly toxic by-product PH is facing severe challenges. In this study, a 3D copper-based catalyst (3DCuO/C) that can efficiently decompose PH at low temperatures and low oxygen concentrations is synthesized. The PH capacity is up to 181.41 mg g , which is superior to that previously reported in the literature. Further studies indicated that the special 3D structure of 3DCuO/C induces oxygen vacancies on the surface of CuO, which is beneficial to the activation of O , and then promotes the adsorption and dissociation of PH . The doping of P after dissociation determines the formation of Cu-P, and the eventual conversion to Cu P leads to the deactivation of CuO active sites. More strikingly, due to the appearance of Cu P, the deactivated De-3DCuO/C (Cu P/C) exhibited significant activity in the photocatalytic degradation of rhodamine B and photocatalytic oxidation of Hg (gas) and can also be a candidate as an anode material for Li batteries after modification, which will provide a more thorough and economical treatment scheme for deactivated catalysts.
随着磷酸铁锂电池的广泛应用，黄磷产业的产能急剧增加，高毒性副产物 PH 的处理面临严峻挑战。本研究合成了一种可在低温、低氧浓度下高效分解 PH 的三维铜基催化剂（3DCuO/C）。该催化剂对 PH 的容量高达 181.41mg/g，优于文献中之前报道的容量。进一步的研究表明，3DCuO/C 的特殊 3D 结构在 CuO 表面诱导形成氧空位，有利于 O 的活化，进而促进 PH 的吸附和解离。解离后的 P 掺杂决定了 Cu-P 的形成，最终转化为 Cu P 导致 CuO 活性位失活。更引人注目的是，由于 Cu P 的出现，失活的 De-3DCuO/C（Cu P/C）在罗丹明 B 的光催化降解和 Hg（气体）的光催化氧化中表现出显著的活性，并且经过修饰后也可以作为锂电池的阳极材料，为失活催化剂提供了更彻底、更经济的处理方案。
