Graphene oxide (GO) was combined with imidazolium-based ionic liquid (IL) under non-covalent bonding,and then,IL/GO-TiO2 composite material was prepared by solid-state dispersion with titanium dioxide nanoparticles (TiO2).The structure and morphology of the materials were characterized by FT-IR,SEM,XPS and UV-Vis,and their efficiency as adsorption photocatalysts for the removal of methyl orange (MO) in UV light was investigated.The experimental results showed that the functionalization of GO by IL significantly improved the adsorption and photocatalytic performance of the composites.IL/GO expanded the light absorption range of TiO2 while slowing down the recombination rate of electrons and holes,resulting in better photocatalytic performance of TiO2.Hydroxyl radicals and superoxide radicals were the main active substances in the photocatalytic degradation of methyl orange by IL/GO-TiO2 composites.The removal efficiency of methyl orange could reach 96.6% at a catalyst dosage of 0.325g/L,pH=3 and MO concentration of 20mg/L.
[1] 陆慧慧,刘梅红,俞三传.聚偏氟乙烯超滤膜深度处理印染废水膜污染机理研究[J].浙江理工大学学报(自然科学版),2022,47(2):1-9.
[2] 赵阁阁,孙婧,张运波,等.高级氧化技术处理印染废水的研究进展[J].应用化工,2021,50(9):2550-2554,2558.
[3] Coelho L L,Hotza D,Estrella A S,et al.Modulating the photocatalytic activity of TiO2 (P25) with lanthanum and graphene oxide[J].Journal of Photochemistry and Photobiology A:Chemistry,2019,372:1-10.
[4] Wong T J,Lim F J,Gao M,et al.Photocatalytic H2 production of composite one-dimensional TiO2 nanostructures of different morphological structures and crystal phases with graphene[J].Catalysis Science & Technology,2013,3(4):1086-1093.
[5] Nguyen V H,Shim J J.Ionic liquid mediated synthesis of graphene-TiO2 hybrid and its photocatalytic activity[J].Materials Science and Engineering B,2014,180:38-45.
[6] He X,Zhu J,Tan L,et al.Visible light-induced photocatalytic degradation of gaseous toluene by Ce,S and N doped ionic liquid-TiO2[J].Materials Science in Semiconductor Processing,2020,120:105259.
[7] Cva B,Eeea B,Maq C.Transition metal nanoparticles in ionic liquids:synthesis and stabilization-ScienceDirect[J].Journal of Molecular Liquids,2019,276:826-849.
[8] Hummers W S,Offeman R E.Preparation of graphitic oxide[J].Journal of the American Chemical Society,1958,80(6):1339.
[9] Gan C,Liang T,Li W,et al.Amine-terminated ionic liquid modified graphene oxide/copper nanocomposite toward efficient lubrication[J].Applied Surface Science,2019,491:105-115.
[10] Yang Y K,He C E,Peng R G,et al.Non-covalently modified graphene sheets by imidazolium ionic liquids for multifunctional polymer nanocomposites[J].Journal of Materials Chemistry,2012,22(12):5666-5675.
[11] Pan Y B,Zhang Y L,Huang Y G,et al.Enhanced photocatalytic oxidation degradability for real cyanide wastewater by designing photocatalyst GO/TiO2/ZSM-5:performance and mechanism research[J].Chemical Engineering Journal,2022,428:131257.
[12] Mahendran V,Gogate P R.Degradation of acid scarlet 3R dye using oxidation strategies involving photocatalysis based on Fe doped TiO2 photocatalyst,ultrasound and hydrogen peroxide[J].Separation and Purification Technology,2021,274:119011.
[13] Ge W,Ma Q,Ai Z,et al.Three-dimensional reduced graphene oxide/montmorillonite nanosheet aerogels as electrode material for supercapacitor application[J].Applied Clay Science,2021,206:106022.
[14] Hu Y W,Stoller M D,Cai W W,et al.Exfoliation of graphite oxide in propylene carbonate and thermal reduction of the resulting graphene oxide platelets[J].ACS Nano,2010,4(2):1227-1233.
[15] 王园园.离子液体/氧化石墨烯/PVDF微滤膜的制备及应用研究[D].沈阳:沈阳工业大学,2019.
[16] Yan Y,Cui N,Liu F,et al.Ionic liquid induced electrostatic self-assemble of reduced graphene oxide for high-performance all-solid-state flexible symmetric supercapacitor[J].Journal of Alloys and Compounds,2018,776:22-30.
[17] Daraee M,Ghasemy E,rashidi A,Effective adsorption of hydrogen sulfide by intercalation of TiO2 and N-doped TiO2 in graphene oxide[J].Journal of Environmental Chemical Engineering,2020,8(4):103836.
[18] Adly M S,El-Dafrawy S M,El-Hakam S A.Application of nanostructured graphene oxide/titanium dioxide composites for photocatalytic degradation of rhodamine B and acid green 25 dyes-ScienceDirect[J].Journal of Materials Research and Technology,2019,8(6):5610-5622.
[19] Yan W,He F,Gai S L,et al.A novel 3D structured reduced graphene oxide/TiO2 composite:synthesis and photocatalytic performance[J].Journal of Materials Chemistry A,2014,2(10):3605.
[20] Liu C,Zhang L,Liu R,et al.Hydrothermal synthesis of N-doped TiO2 nanowires and N-doped graphene heterostructures with enhanced photocatalytic properties[J].Journal of Alloys and Compounds,2016,656:24-32.
[21] Yz A,Tc A,Shuai L A,et al.N-doped magnetic three-dimensional carbon microspheres@TiO2 with a porous architecture for enhanced degradation of tetracycline and methyl orange via adsorption/photocatalysis synergy[J].Chemical Engineering Journal,2021,411:128615.
[22] Shim N.Ionic liquid mediated synthesis of graphene-TiO2 hybrid and its photocatalytic activity[J].Materials Science and Engineering:B,2014,180:38-45.
[23] Grace M,Anshidha M,Amalu M,et al.Ionic liquid functionalised reduced graphene oxide fluoroelastomer nanocomposites with enhanced mechanical,dielectric and viscoelastic properties[J].European Polymer Journal,2018,109:277-287.
[24] Zhang X Y,Li H P,Cui X L,et al.Graphene/TiO2 nanocomposites:synthesis,characterization and application in hydrogen evolution from water photocatalytic splitting[J].Journal of Materials Chemistry,2010,20(14):2801-2806.
[25] Naemeh S,Elaheh K.Synthesis of mesoporous Pd-doped TiO2 templated by a magnetic recyclable ionic liquid for efficient photocatalytic air treatment[J].Ind Eng Chem Res,2016,55(40):10533-10543.
[26] Zhu C,Li G,Lian Z.Effect of synergy between oxygen vacancies and graphene oxide on performance of TiO2 for photocatalytic NO removal under visible light[J].Separation and Purification Technology,2021,276(5):119362.
[27] Chu W,Choy W K,So T Y.The effect of solution pH and peroxide in the TiO2-induced photocatalysis of chlorinated aniline[J].Journal of Hazardous Materials,2007,141(1):86-91.
[28] Musawi T,Rajiv P,Mengelizadeh N,et al.Development of sonophotocatalytic process for degradation of acid orange 7 dye by using titanium dioxide nanoparticles/graphene oxide nanocomposite as a catalyst[J].Journal of Environmental Management,2021,292:112777.
[29] 陈鸿毅,华涛,李冬梅,等.IL/GO/88A的制备及其对四环素的光催化降解性能[J].环境工程学报,2021,15(6):1862-1872.
基金资助
科技型中小企业创新基金(12C26211300719);河北省高等学校科学技术研究项目(ZD2021420)
PDF
