Preparation of APTES-TiO2-B4C/PVDF film and study on its performance for photodegradation of organic dyes
OUYANG Yuan-yuan, LI San-xi, JIANG Da-fu, WANG Song, OTITOJU Tunmise Ayode
Liaoning Provincial Key Laboratory of Catalytic Synthesis Technology, School of Environmental and Chemical Engineering, Shenyang University of Technology, Shenyang 110870, China
Abstract: Functionalized APTES-B4C/TiO2 composite particles are obtained by using 3-aminopropyltriethoxysilane (APTES) to modify the mixed particles of nano-boron carbide (B4C) and titanium dioxide (TiO2).APTES-B4C-TiO2/PVDF composite membrane with photocatalytic properties are prepared by drawing APTES-B4C-TiO2 composite particles into polyvinylidene fluoride (PVDF) film matrix through phase inversion technology.The composite film is characterized by means of X-ray diffraction (XRD),scanning electron microscope (SEM),X-ray energy spectrum analysis (EDS),and water contact angle test.The photocatalytic performance of the prepared APTES-B4C-TiO2/PVDF composite membrane is evaluated by using a 50 mg·L-1 rhodamine B aqueous solution to simulate wastewater.Experimental results show that the composite membrane has the highest porosity of 68.3%,the largest membrane specific surface area of 8.25 m2·g-1 and the lowest water contact angle of 69° when 0.5 wt% of composite particles is added.Furthermore,the photocatalytic experiment results show that APTES-B4C-TiO2/PVDF composite membrane that contains 0.5 wt% of APTES-B4C-TiO2 composite particles has the maximum photocatalytic performance,by which the removal rate of rhodamine B reaches 82.92%,much higher than the 65.73% by the pure membrane.
欧阳园园, 李三喜, 蒋大富, 王松, Otitoju Tunmise Ayode. APTES-TiO2-B4C/PVDF膜的制备及其光降解有机染料的性能研究[J]. 现代化工, 2022, 42(8): 204-208.
OUYANG Yuan-yuan, LI San-xi, JIANG Da-fu, WANG Song, OTITOJU Tunmise Ayode. Preparation of APTES-TiO2-B4C/PVDF film and study on its performance for photodegradation of organic dyes. Modern Chemical Industry, 2022, 42(8): 204-208.
[1] Fujishima A,Honda K,et al.Electrochemical photolysis of water at a semiconductor electrode[J].Nature,1972,238(5358):37-38. [2] 钟理,吕扬效.废水中有机污染物高级氧化过程的降解[J].化工进展,1998,17(4):51-53. [3] Lv Y,Liu Y,Wei J,et al.Bisphenol S degradation by visible light assisted peroxymonosulfate process based on BiOI/B4C photocatalysts with Z-scheme heterojunction[J].Chemical Engineering Journal,2021,417(27):128-141. [4] Bao R,Yan Z,Chrisey D B,et al.Charge carrier lifetime in boron carbide thin films[J].Applied Physics Letters,2011,98(156):67-71. [5] Singh P,Kaur G,Singh K,et al.Nanostructured boron carbide (B4C):A bio-compatible and recyclable photo-catalyst for efficient wastewater treatment[J].Elsesier,2018,(8):1-24. [6] Singh P,Kaur G,ingh K,et al.Specially designed B4C/SnO2 nanocomposite for photocatalysis:Traditional ceramic with unique properties[J].Applied Nanoscience,2018,219(67):54-63. [7] Liu J,Wen S,Hou Y,et al.Boron carbides as efficient,metal-free,visible-light-responsive photocatalysts[J].Cheminform,2013,44(25):3241-3245. [8] Bougoin M,Thevenot F,Dubois J,et al.Synthesis and classificaion of dense ceramics in boron-carbide[J].Journal of the Less Common Metals,1985,114(2):251-271. [9] 吴成林,唐春怡,吴盈盈.二氧化钛在纤维膜材料上的光催化应用研究[J].化工管理,2019(12):18-19. [10] 左丹英.溶液相转化法制备PVDF微孔膜过程中的结构控制及其性能研究[D].杭州:浙江大学,2005. [11] 钱景.乙烯-四氟乙烯共聚物复合体系的结构与性能研究[D].合肥:中国科学技术大学,2019. [12] Teoh M,Chung T S,Yeo Y,et al.Dual-layer PVDF/PTFE composite hollow fibers with a thin macrovoid-free selective layer for water production via membrane distillation[J].Chemical Engineering Journal,2011,171(2):684-691. [13] Wang Q Q,Gao D W,Gao C T,et al.Removal of a cationic dye by adsorption/photodegradation using electrospun PAN/O-B4C composite nanofibrous membranes coated with TiO2[J].International Journal of Photoenergy,2012,(2012):145-153. [14] 杨凯,李笑笑,曾德彬.异质/同质相结高效光催化的研究进展:以相变构建为例[J].催化学报,2019,(6):796-818. [15] 王积森,冯忠彬,孙金全.纳米TiO2的光催化机理及其影响因素分析[J].微纳电子技术,2008,(1):28-32.
