Wan Zhou, Jiao Chunlin, Feng Qilin, Wang Jue, Xiong Jianhua, Chen Guoning, Wang Shuangfei, Zhu Hongxiang
School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China.
Guangxi Bossco Environmental Protection Technology Co., Ltd., Nanning 530007, China.
Polymers (Basel). 2022 Jul 24;14(15):2998. doi: 10.3390/polym14152998.
Intimate coupling photocatalysis and biodegradation treatment technology is an emerging technology in the treatment of refractory organic matter, and the carrier plays an important role in this technology. In this paper, sugarcane cellulose was used as the basic skeleton, absorbent cotton was used as a reinforcing agent, anhydrous sodium sulfate was used as a pore-forming agent to prepare a cellulose porous support with good photocatalytic performance, and nano-TiO was loaded onto it by a low-temperature bonding method. The results showed that the optimal preparation conditions of cellulose carriers were: cellulose mass fraction 1.0%; absorbent cotton 0.6 g; and NaSO 60 g. The SEM, EDS and XPS characterization further indicated that the nano-TiO was uniformly loaded onto the cellulose support. The degradation experiments of Rhodamine B showed that the nano-TiO-loaded composite supports had good photocatalytic performance. The degradation rate of 1,2,4-trichlorobenzene was more than 92% after 6 cycles, and the experiment of adhering a large number of microorganisms on the carriers before and after the reaction showed that the cellulose-based carriers obtained the required photocatalytic performance and stability, which is a good cellulose porous carrier.
光催化与生物降解耦合处理技术是处理难降解有机物的一项新兴技术，载体在该技术中起着重要作用。本文以甘蔗纤维素为基本骨架，吸水棉为增强剂，无水硫酸钠为造孔剂，制备了具有良好光催化性能的纤维素多孔载体，并通过低温键合方法将纳米TiO负载其上。结果表明，纤维素载体的最佳制备条件为：纤维素质量分数1.0%；吸水棉0.6 g；硫酸钠60 g。扫描电子显微镜（SEM）、能谱分析（EDS）和X射线光电子能谱（XPS）表征进一步表明纳米TiO均匀负载在纤维素载体上。罗丹明B降解实验表明，负载纳米TiO的复合载体具有良好的光催化性能。1,2,4-三氯苯经过6次循环后降解率超过92%，对反应前后载体上附着大量微生物的实验表明，纤维素基载体获得了所需的光催化性能和稳定性，是一种良好的纤维素多孔载体。
