Wang Wenbin, Qiang Wei, Chen Chuntao, Sun Dongping
Institute of Chemicobiology and Functional Materials, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Guizhou Panjiang Civil Explosion Co., Ltd., Guiyang 551404, China.
Polymers (Basel). 2024 Jan 8;16(2):186. doi: 10.3390/polym16020186.
The utilization of titanium dioxide (TiO) as a photocatalyst for the treatment of wastewater has attracted significant attention in the environmental field. Herein, we prepared an NH-MIL-125-derived N-doped TiO@C Visible Light Catalyst through an in situ calcination method. The nitrogen element in the organic connector was released through calcination, simultaneously doping into the sample, thereby enhancing its spectral response to cover the visible region. The as-prepared N-doped TiO@C catalyst exhibited a preserved cage structure even after calcination, thereby alleviating the optical shielding effect and further augmenting its photocatalytic performance by increasing the reaction sites between the catalyst and pollutants. The calcination time of the N-doped TiO@C-450 °C catalyst was optimized to achieve a balance between the TiO content and nitrogen doping level, ensuring efficient degradation rates for basic fuchsin (99.7%), Rhodamine B (89.9%) and tetracycline hydrochloride (93%) within 90 min. Thus, this study presents a feasible strategy for the efficient degradation of pollutants under visible light.
二氧化钛（TiO）作为光催化剂用于废水处理在环境领域已引起广泛关注。在此，我们通过原位煅烧法制备了一种由NH-MIL-125衍生的N掺杂TiO@C可见光催化剂。有机连接体中的氮元素通过煅烧释放出来，同时掺杂到样品中，从而增强其光谱响应以覆盖可见光区域。所制备的N掺杂TiO@C催化剂即使在煅烧后仍保持笼状结构，从而减轻了光屏蔽效应，并通过增加催化剂与污染物之间的反应位点进一步提高了其光催化性能。对N掺杂TiO@C-450 °C催化剂的煅烧时间进行了优化，以在TiO含量和氮掺杂水平之间实现平衡，确保在90分钟内对碱性品红（99.7%）、罗丹明B（89.9%）和盐酸四环素（93%）有高效的降解率。因此，本研究提出了一种在可见光下高效降解污染物的可行策略。
