标题： 高压铌铁矿相二氧化钛（TiO2）对塑料废物催化光转化及同时产氢（H2）的影响 显示英文标题

标题： Impact of high-pressure columbite phase of titanium dioxide (TiO2) on catalytic photoconversion of plastic waste and Simultaneous hydrogen (H2) production

摘要： 光重整是一种可持续的光催化过程，它在降解塑料废物的同时，还能从水中产生氢气（H2）。 然而，由于能够同时进行塑料降解和H2生产的有效催化剂稀缺，例如二氧化钛（TiO2），这一过程受到的关注有限。 在本研究中，通过使用高压扭转（HPT）方法稳定二氧化钛的高压正交相，即金红石相，开发出一种活性催化剂。 该材料在光照下能有效降解聚对苯二甲酸乙二醇酯（PET）塑料，将其转化为有价值的有机化合物，如甲酸、对苯二甲酸、羟基乙酸和乙酸。 此外，它还能产生大量H2。 研究结果表明，高压正交相，特别是在存在氧空位的情况下，通过增加光吸收、减少电子-空穴复合以及生成羟基自由基，增强了催化产氢和微塑料降解性能。 这些结果突显了改性高压TiO2光催化剂在同时解决塑料废物危机和H2燃料需求方面的巨大潜力。 显示英文摘要

摘要： Photoreforming is a sustainable photocatalytic process that degrades plastic waste while simultaneously producing hydrogen (H2) from water. However, this process has received limited attention due to the scarcity of effective catalysts capable of both plastic degradation and H2 production, such as titanium dioxide (TiO2). In this study, an active catalyst is developed by stabilizing the high-pressure orthorhombic phase of TiO2, known as columbite, using a high pressure torsion (HPT) method. This material effectively degrades polyethylene terephthalate (PET) plastic under light, converting it into valuable organic compounds such as formic acid, terephthalate, glycolic acid, and acetic acid. Additionally, it produces a significant amount of H2. The findings show that the high-pressure orthorhombic phase, especially in the presence of oxygen vacancies, enhances catalytic H2 production and microplastic degradation by increasing light absorption, reducing electron-hole recombination, and generating hydroxyl radicals. These results highlight the substantial potential of modified high-pressure TiO2 photocatalysts in simultaneously addressing the plastic waste crisis and the demand for H2 fuel.