Yu Yajing, Wu Dingsheng, Liu Danyu, Zhang Jingli, Xie Lixi, Feng Quan, Ke Huizhen, Tong Yingjia, Wei Qufu, Lv Pengfei
Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, PR China.
Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, PR China; Key Laboratory of Textile Fabrics, College of Textiles and Clothing, Anhui Polytechnic University, Wuhu, Anhui 241000, PR China.
Bioresour Technol. 2024 Nov;411:131324. doi: 10.1016/j.biortech.2024.131324. Epub 2024 Aug 22.
To achieve efficient dye degradation, we reported a visible light-driven biomass photo-enzyme coupled system, which was constructed by assembling g-CN during in situ culture and immobilizing laccase via metal-organic framework (MOF). Benefited from the network and porous structure of bacterial cellulose (BC), the g-CN could be stably interspersed, and MOF grew g-CN/BC to encapsulate laccase. BC improves the reusability of the system, while combined with MOF encapsulation, avoiding direct contact between photo- and enzyme- catalysts. Importantly, thanks to the existence of electron transfer from photocatalysis to enzyme, the photogenerated electron hole recombination within the photocatalyst reduced, improving catalyzed reaction efficiency. The degradation efficiency of the catalysis system within 10 min for methylene blue and rhodamine B could reach 100 % and 96.1 %, respectively, which could rapidly degrade dye and recycle for more than 10 times. This research can shine new light on the development of advanced wastewater treatment.
为实现高效的染料降解，我们报道了一种可见光驱动的生物质光酶耦合系统，该系统通过在原位培养过程中组装g-CN并经由金属有机框架（MOF）固定漆酶构建而成。受益于细菌纤维素（BC）的网络和多孔结构，g-CN能够稳定地分散，且MOF在g-CN/BC上生长以封装漆酶。BC提高了该系统的可重复使用性，同时与MOF封装相结合，避免了光催化剂和酶催化剂之间的直接接触。重要的是，由于存在从光催化到酶的电子转移，光催化剂内的光生电子空穴复合减少，提高了催化反应效率。该催化系统对亚甲基蓝和罗丹明B在10分钟内的降解效率分别可达100%和96.1%，能够快速降解染料并可循环使用10次以上。本研究可为先进废水处理的发展提供新的思路。
