APTES-TiO_(2)-B_(4)C/PVDF膜的制备及其光降解有机染料的性能研究  

Preparation of APTES-TiO_(2)-B_(4)C/PVDF film and study on its performance for photodegradation of organic dyes

作　　者：欧阳园园 李三喜[1] 蒋大富 王松[1] Otitoju Tunmise Ayode 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)

机构地区：[1]辽宁省聚合物催化合成技术重点实验室沈阳工业大学环境与化学工程学院,辽宁沈阳110870

出　　处：《现代化工》2022年第8期204-208,共5页Modern Chemical Industry

摘　　要：采用3-氨丙基三乙氧基硅烷(APTES)对纳米碳化硼(BC)和二氧化钛(TiO_(2))的混合颗粒进行改性,制备出功能化APTES-BC/TiO_(2)复合颗粒。利用相转化技术将APTES-BC-TiO_(2)复合颗粒引入聚偏氟乙烯(PVDF)膜基质中,得到具有光催化性能的APTES-BC-TiO_(2)/PVDF复合膜。通过XRD、SEM、EDS和水接触角测试对制备的复合膜进行表征。以50 mg/L的罗丹明B(RhB)水溶液模拟废水考察APTES-BC-TiO_(2)/PVDF复合膜的光催化性能。结果表明,当复合粒子的质量分数为0.5%时,复合膜具有最高的孔隙率(68.3%)、最大的膜比表面积(8.25 m^(2)/g)和最低的水接触角(69°)。光催化实验结果表明,APTES-BC-TiO_(2)复合粒子的质量分数为0.5%时,APTES-BC-TiO_(2)/PVDF复合膜光催化性能最佳,对RhB的去除率达到82.92%,远高于纯膜的去除率(65.73%)。Functionalized APTES-BC/TiO_(2)composite particles are obtained by using 3-aminopropyltriethoxysilane(APTES)to modify the mixed particles of nano-boron carbide(BC)and titanium dioxide(TiO_(2)).APTES-B4 C-TiO_(2)/PVDF composite membrane with photocatalytic properties are prepared by drawing APTES-BC-TiO_(2)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-BC-TiO_(2)/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 m^(2)·gand the lowest water contact angle of 69°when 0.5 wt%of composite particles is added.Furthermore,the photocatalytic experiment results show that APTES-BC-TiO_(2)/PVDF composite membrane that contains 0.5 wt%of APTES-BC-TiO_(2)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.

关 键 词：聚偏氟乙烯 碳化硼-二氧化钛 膜 光催化 

分 类 号：X703[环境科学与工程—环境工程] TQ051.893[化学工程]