Chen Nuo, Sun Kexin, Liang Huicong, Xu Bingyan, Wu Si, Zhang Qi, Han Qiang, Yang Jinghai, Lang Jihui
Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000, China.
Siping Hongzui University Science Park, Siping 136000, China.
Nanomaterials (Basel). 2023 Feb 4;13(4):624. doi: 10.3390/nano13040624.
A novel engineered carbon cloth (CC)-based self-cleaning membrane containing a Cu:TiO and Ag coating has been created via hydrothermal and light deposition methods. The engineered membrane with chrysanthemum morphology has superhydrophilic and underwater superoleophilic performance. The cooperativity strategy of Cu doping and Ag coating to the TiO is found to be critical for engineering the separation efficiency and self-cleaning skill of the CC-based membrane under visible light due to the modulated bandgap structure and surface plasmon resonance. The CC-based membrane has excellent oil-water separation performance when Cu is fixed at 2.5 wt% and the Ag coating reaches a certain amount of 0.003 mol/L AgNO. The contact angle of underwater oil and the separation efficiency are 156° and 99.76%, respectively. Furthermore, the membrane has such an outstanding self-cleaning ability that the above performance can be nearly completely restored after 30 min of visible light irradiation, and the separation efficiency can still reach 99.65% after 100 cycles. Notably, the membrane with exceptional wear resistance and durability can work in various oil-water mixtures and harsh environments, indicating its potential as a new platform of the industrial-level available membrane in dealing with oily wastewater.
通过水热法和光沉积法制备了一种新型的基于工程化碳布（CC）的自清洁膜，该膜含有Cu:TiO和Ag涂层。具有菊花形貌的工程化膜具有超亲水性和水下超疏油性。由于能带结构的调制和表面等离子体共振，发现Cu掺杂和Ag涂层对TiO的协同策略对于在可见光下设计基于CC的膜的分离效率和自清洁能力至关重要。当Cu固定在2.5 wt%且Ag涂层达到0.003 mol/L AgNO的一定量时，基于CC的膜具有优异的油水分离性能。水下油的接触角和分离效率分别为156°和99.76%。此外，该膜具有出色的自清洁能力，在可见光照射30分钟后上述性能几乎可以完全恢复，并且在100次循环后分离效率仍可达到99.65%。值得注意的是，这种具有卓越耐磨性和耐久性的膜可以在各种油水混合物和恶劣环境中工作，表明其作为处理含油废水的工业级可用膜新平台的潜力。
