泥质活性炭负载Fe_3O_4-TiO_2磁性光催化剂的制备及性能
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摘要
采用化学共沉淀法以及液相沉积法制备具有强磁性的Fe_3O_4-TiO_2/泥质活性炭光催化剂,以SEM和红外光谱技术对其进行表征。通过降解亚甲基蓝溶液研究不同负载量对催化剂光催化性能的影响。结果表明,负载42%Fe_3O_4的光催化剂(含14%TiO_2和44%泥质活性炭)的光催化活性最强,泥质活性炭制备的光催化剂在120 min时对亚甲基蓝的降解率达到100%,比纯TiO_2降解率高。泥质活性炭负载Fe_3O_4-TiO_2磁性光催化剂对亚甲基蓝溶液具有良好的降解效果,还可实现磁分离回收。
The Fe_3O_4-TiO_2 sewage sludge based activated carbon photocatalyst with strong magnetic properties was prepared by chemical coprecipitation method and liquid phase deposition method, and characterized by SEM and infrared spectroscopy. The effects of different loadings on the photocatalytic performance of the catalysts were investigated by degrading methylene blue solution.The results show that the photocatalyst with 42% Fe_3O_4(containing 14% TiO_2 and 44% sewage sludge based activated carbon) has the strongest photocatalytic activity. The photocatalyst prepared by sewage sludge based activated carbon has a degradation rate of 100% for methylene blue at 120 min,higher than pure TiO_2.The sewage sludge based activated carbon supported Fe_3O_4-TiO_2 magnetic photocatalyst has good degradation effect on methylene blue solution, and can also achieve magnetic separation and recovery.
The Fe_3O_4-TiO_2 sewage sludge based activated carbon photocatalyst with strong magnetic properties was prepared by chemical coprecipitation method and liquid phase deposition method, and characterized by SEM and infrared spectroscopy. The effects of different loadings on the photocatalytic performance of the catalysts were investigated by degrading methylene blue solution.The results show that the photocatalyst with 42% Fe_3O_4(containing 14% TiO_2 and 44% sewage sludge based activated carbon) has the strongest photocatalytic activity. The photocatalyst prepared by sewage sludge based activated carbon has a degradation rate of 100% for methylene blue at 120 min,higher than pure TiO_2.The sewage sludge based activated carbon supported Fe_3O_4-TiO_2 magnetic photocatalyst has good degradation effect on methylene blue solution, and can also achieve magnetic separation and recovery.
引文
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[22] 余峻峰.二氧化钛/生物质活性炭复合材料的制备与性能研究[D].合肥:合肥工业大学,2013.YU J F.Preparation and performance study on biomass activated carbon loaded with TiO2[D].Hefei:Hefei University of Technology,2013.(in Chinese)
[23] 孙艺飞.活性炭纤维担载TiO2光催化剂的制备及其光催化性能的研究[D].大连:大连理工大学,2011.SUN Y F.Preparation of TiO2 photocatalyst loaded on activated carbon fibers and its photocatalytic properties[D].Dalian:Dalian University of Technology,2011.(in Chinese)
[24] 信欣,汤亚飞.活性炭负载TiO2光降解水中敌敌畏的研究[J].工业用水与废水,2004,35(1):30-32.XIN X,TANG Y F.A study of photodegradation of dichlorvos in water by TiO2 film supported by granular activated carbon[J].Industrial Water & Wastewater,2004,35(1):30-32.(in Chinese)
[25] 施利毅,李春忠,房鼎业,等.气相合成二氧化钛超细粒子光催化活性艳红X-3B脱色的研究[J].太阳能学报,2000,21(1):100-105.SHI L Y,LI C Z,FANG D Y,et al.Photocatalytic decolorization of active red X-3B by ultrafine TiO2 particles synthesized in high temperature aerosol reactor[J].Acta Energiae Solaris Sinica,2000,21(1):100-105.(in Chinese)
[26] HE Q H,ZHANG Z X,XIONG J W,et al.A novel biomaterial:Fe3O4∶TiO2 core-shell nano particle with magnetic performance and high visible light photocatalytic activity[J].Optical Materials,2008,31(2):380-384.
[2] 杨瑶,徐鹤,尹建锋.我国污水处理厂污泥资源化利用现状分析[J].南水北调与水利科技,2012,10(5):114-118.YANG Y,XU H,YIN J F.Analysis on resource utilization of sewage sludge in the sewage treatment plants of China[J].South-to-North Water Transfers and Water Science & Technology,2012,10(5):114-118.(in Chinese)
[3] 杨金满,贾瑞宝.城市污泥资源化利用研究进展[J].工业用水与废水,2011,42(5):1-5.YANG J M,JIA R B.Research progress of resource utilization of urban sewage sludge[J].Industrial Water & Wastewater,2011,42(5):1-5.(in Chinese)
[4] 霍怡君,刘子仪,程刚.脱水污泥的微波-碱法溶胞及其氮磷回收[J].西安工程大学学报,2017,31(4):467-473.HUO Y J,LIU Z Y,CHENG G.Microwave-alkaline lysis treatment of dewatered sludge and its nitrogen phosphorus recycling[J].Journal of Xi′an Polytechnic University,2017,31(4):467-473.(in Chinese)
[5] 唐杰,吴赞敏.TiO2光催化氧化技术在印染废水处理中的研究进展[J].印染助剂,2014,31(2):10-14.TANG J,WU Z M.Development of TiO2 photocatalytic oxidation technology in printing and dyeing wastewater treatment[J].Textile Auxiliaries,2014,31(2):10-14.(in Chinese)
[6] 肖俊霞,吴贤格.TiO2光催化氧化技术的研究与发展[J].石油化工,2011,40(2):225-232.XIAO J X,WU X G.Research progress in TiO2 photocatalytic oxidation technology[J].Petrochemical Technology,2011,40(2):225-232.(in Chinese)
[7] 单志俊,邓慧萍.TiO2光催化氧化技术的研究进展[J].中国资源综合利用,2007,25(2):7-11.SHAN Z J,DENG H P.The development of photocatalytic technology based on TiO2[J].China Resources Comprehensive Utilization,2007,25(2):7-11.(in Chinese)
[8] AO C H,LEE S C,YU J Z,et al.Photodegradation of formaldehyde by photocatalyst TiO2:Effects on the presences of NO,SO2 and VOCs[J].Applied Catalysis B:Environmental,2004,54(1):41-50.
[9] 李经.活性炭负载二氧化钛光催化剂的制备、表征及应用[D].天津:天津大学,2005.LI J.Study on the preparation characterization and catalytic performance of the activated carbon-supported TiO2 catalyst[D].Tianjin:Tianjin University,2005.(in Chinese)
[10] 刘守新,陈曦.TiO2/活性炭负载型光催化剂的溶胶-凝胶法合成及表征[J].催化学报,2008,29(1):19-24.LIU S X,CHEN X.Sol-gel preparation and characterization of activated carbon supported TiO2 photocatalyst[J].Chinese Journal of Catalysis,2008,29(1):19-24.(in Chinese)
[11] 谢倩,赵秀兰.TiO2/AC负载型光催化剂的制备及光催化性能的研究[J].西南大学学报(自然科学版),2011,33(3):63-67.XIE Q,ZHAO X L.Synthesis,characterization and photocatalysis of activated carbon-supported TiO2 catalysts[J].Journal of Southwest University(Natural Science),2011,33(3):63-67.(in Chinese)
[12] 宋长远,王煦漫,段凯迪,等.石墨烯-PET复合纤维的制备及其对水中结晶紫的吸附[J].纺织高校基础科学学报,2018,31(1):7-12.SONG C Y,WANG X M,DUAN K D,et al.Preparation of graphene/polyester composite fiber and its adsorption of crystal violet in water[J].Basic Sciences Journal of Textile Universities,2018,31(1):7-12.(in Chinese)
[13] 黎汉生,张东翔.磁性催化剂研究进展[J].材料导报,2005,19(8):5-8.LI H S,ZHANG D X.Progress in study on magnetic catalysts[J].Materials Review,2005,19(8):5-8.(in Chinese)
[14] 李龙凤,张茂林,孟祥东.负载型TiO2/AC光催化剂的制备及其光催化性能[J].材料科学与工程学报,2010,28(3):349-351.LI L F,ZHANG M L,MENG X D.Preparation of TiO2/AC photocatalyst by forced hydrolysis in boiling reflux state and its photocatalytic activity[J].Journal of Materials Science and Engineering,2010,28(3):349-351.(in Chinese)
[15] 王星梅,景红霞,黄晶,等.纳米铁氧体/TiO2光催化材料的研究进展[J].应用化工,2018,47(1):135-138.WANG X M,JING H X,HUANG J,et al.Research progress of nano-ferrite/TiO2photocatalysis material[J].Applied Chemical Industry,2018,47(1):135-138.(in Chinese)
[16] 陈力,邵骏,杨姗姍,等.磁性泥质活性炭最佳制备工艺条件[J].西安工程大学学报,2017,31(4):445-450.CHEN L,SHAO J,YANG S S,et al.Study on the optimum preparation conditions of magnetized sewage sludge-based activated carbons[J].Journal of Xi′an Polytechnic University,2017,31(4):445-450.(in Chinese)
[17] 邵瑞华,房平,司全印.污水处理厂污泥制备活性炭的研究[J].安徽农业科学,2010,38(31):17632-17635.SHAO R H,FANG P,SI Q Y.Research on preparation of activated carbon from sewage sludge[J].Journal of Anhui Agricultural Sciences,2010,38(31):17632-17635.(in Chinese)
[18] 邵瑞华,房平.城市污水处理厂污泥制备活性炭过程中活化污泥的热解动力学[J].过程工程学报,2013,13(2):217-223.SHAO R H,FANG P.Pyrolysis kinetics of activated sewage sludge in preparation of sewage sludge-based activated carbon[J].The Chinese Journal of Process Engineering,2013,13(2):217-223.(in Chinese)
[19] 阮超.成型磁化泥质活性炭的制备及应用研究[D].西安:西安工程大学,2016.RUAN C.Preparation and application of molding sewage sludge based activated carbon[D].Xi′an:Xi′an Polytechnic University,2016.(in Chinese)
[20] 马放,周家晖,郭海娟,等.磁性活性炭的制备及其吸附性能[J].哈尔滨工业大学学报,2016,48(2):50-56.MA F,ZHOU J H,GUO H J,et al.Study on preparation and adsorption properties of magnetic activated carbon[J].Journal of Harbin Institute of Technology,2016,48(2):50-56.(in Chinese)
[21] 翟春阳,周卫强,徐景坤,等.活性炭负载TiO2-Fe3O4磁性光催化剂的制备及性能[J].化学研究,2009,20(2):83-86.ZHAI C Y,ZHOU W Q,XU J K,et al.Preparation and properties of magnetic photocatalyst:TiO2-Fe3O4 loaded on active carbon[J].Chemical Research,2009,20(2):83-86.(in Chinese)
[22] 余峻峰.二氧化钛/生物质活性炭复合材料的制备与性能研究[D].合肥:合肥工业大学,2013.YU J F.Preparation and performance study on biomass activated carbon loaded with TiO2[D].Hefei:Hefei University of Technology,2013.(in Chinese)
[23] 孙艺飞.活性炭纤维担载TiO2光催化剂的制备及其光催化性能的研究[D].大连:大连理工大学,2011.SUN Y F.Preparation of TiO2 photocatalyst loaded on activated carbon fibers and its photocatalytic properties[D].Dalian:Dalian University of Technology,2011.(in Chinese)
[24] 信欣,汤亚飞.活性炭负载TiO2光降解水中敌敌畏的研究[J].工业用水与废水,2004,35(1):30-32.XIN X,TANG Y F.A study of photodegradation of dichlorvos in water by TiO2 film supported by granular activated carbon[J].Industrial Water & Wastewater,2004,35(1):30-32.(in Chinese)
[25] 施利毅,李春忠,房鼎业,等.气相合成二氧化钛超细粒子光催化活性艳红X-3B脱色的研究[J].太阳能学报,2000,21(1):100-105.SHI L Y,LI C Z,FANG D Y,et al.Photocatalytic decolorization of active red X-3B by ultrafine TiO2 particles synthesized in high temperature aerosol reactor[J].Acta Energiae Solaris Sinica,2000,21(1):100-105.(in Chinese)
[26] HE Q H,ZHANG Z X,XIONG J W,et al.A novel biomaterial:Fe3O4∶TiO2 core-shell nano particle with magnetic performance and high visible light photocatalytic activity[J].Optical Materials,2008,31(2):380-384.