Abstract: Magnetic carbon nano onions/layered double hydroxides (MCNOs/LDH) composites are synthesized via hydrothermal process,and calcinated at high temperature to prepare calcinated MCNOs/LDH (MCNOs/CLDH).The optimal calcination process parameters are determined through orthogonal experiments.The as-synthesized composites are characterized by SEM,XRD,FT-IR,N2 adsorption-desorption isotherms and VSM.Adsorption performance of MCNOs/CLDH to F- is investigated by static adsorption experiments.The results suggest that MCNOs/CLDH composites prepared at the optimal conditions such as a calcination temperature of 550℃ and a calcination time of 2 h exhibit an adsorption capacity of 28.95 mg·g-1 to F- and a removal rate of 57.9% for F-.What's more,analysis results demonstrate that the adsorption mechanism involves in surface adsorption,ion exchange interaction and original LDH structure reconstruction by rehydration of mixed metal oxides and concomitant intercalation of fluoride ions into the interlayer region.
郭丽君, 梁颖, 张艳荣, 包璐瑀, 张卫珂. 焙烧态MCNOs/LDH复合材料的制备及其对水体F-去除的研究[J]. 现代化工, 2020, 40(12): 141-146.
GUO Li-jun, LIANG Ying, ZHANG Yan-rong, BAO Lu-yu, ZHANG Wei-ke. Preparation of calcined MCNOs/LDH composites and study on their performance in removing F- from water. Modern Chemical Industry, 2020, 40(12): 141-146.
[1] 章萍,杨陈凯,马若男,等.碳纳米管/羟基磷灰石复合材料对水体F-的去除研究[J].中国环境科学,2019,39(1):179-187. [2] Cai J G,Zhao X,Zhang Y Y,et al.Enhanced fluoride removal by La-doped Li/Al layered double hydroxides[J].Journal of Colloid and Interface Science,2018,509:353-359. [3] 马福臻,周少奇,刘泽珺,等.三维网状HZO@SGH对水中氟离子的吸附作用和机制[J].环境科学,2018,39(2):828-837. [4] Amini M,Mueller K,Abbaspour K C,et al.Statistical modeling of global geogenicfluoride contamination in groundwaters[J].Environmental Science & Technology,2008,42(10):3662-3668. [5] Chowdhury A,Adak M K,Mukherjee A,et al.A critical review on geochemical and geological aspects of fluoride belts,fluorosis and natural materials and other sources for alternatives to fluoride exposure[J].Journal of Hydrology,2019,574:333-359. [6] Kang D J,Yu X L,Ge M F.Morphology-dependent properties and adsorption performance of CeO2 for fluoride removal[J].Chemical Engineering Journal,2017,330:6-43. [7] Belkada F D,Kitous O,Drouiche N,et al.Electrodialysis for fluoride and nitrate removal from synthesized photovoltaic industry wastewater[J].Separation and Purification Technology,2018,204:108-115. [8] Nunes-pereira J,Lima R,Choudhary G,et al.Highly efficient removal of fluoride from aqueous media through polymer compositemembranes[J].Separation and PurificationTechnology,2018,205:1-10. [9] Ben Grich N,Attour A,Mostefa M L,et al.Fluoride removal from water by electrocoagulation:Effect of the type of water and theexperimental parameters[J].Electrochimica Acta,2019,316:257-265. [10] Uddin M K.A review on the adsorption of heavy metals by clay minerals,with special focus on the past decade[J].Chemical Engineering Journal,2017,308:438-462. [11] Hsu Y T,Wu J C S,Nguyen V H.Mg</em>xAl-LDHs layered double hydroxides catalysts for boosting catalytic synthesis of biodiesel and conversion of by-product into valuable glycerol carbonate[J].Journal of the Taiwan Institute of Chemical Engineers,2019,104:219-226. [12] Guo Y D,Gong Z H,Li C X,et al.Efficient removal of uranium(Ⅵ) by 3D hierarchical Mg/Fe-LDH supported nanoscale hydroxyapatite:A synthetic experimental and mechanism studies[J].Chemical Engineering Journal,2019,392:123633. [13] Xu S,Zhao J W,Yu Q Q,et al.Understanding how specific functional groups in humic acid affect the sorption mechanisms of different calcinated layered double hydroxides[J].Chemical Engineering Journal,2019,392. [14] 张微,张志刚,李学亮,等.水滑石对氟离子的去除作用研究[J].沈阳化工大学学报,2018,32(4):335-339. [15] Mrozek O,Ecorchard P,Vomacka P,et al.Mg-Al-La LDH-MnFe2O4 hybrid material for facile removal of anionic dyes from aqueous solutions[J].Applied Clay Science,2019,169:1-9. [16] Mourid E,Lakraimi M,Benaziz L,et al.Wastewater treatment test by removal of the sulfamethoxazole antibiotic by a calcined layered double hydroxide[J].Applied Clay Science,2019,168:87-95. [17] Zhang W K,Wang J W,Yang Y Q,et al.Novel magnetically retrievable Bi2WO6/magnetic carbon nano-onions composite with enhanced photoactivity under visible light[J].Journal of Colloid and Interface Science,2018,531:502-512. [18] Zhou F,Pan N Y,Chen H Y,et al.Hydrogen production through steam reforming of toluene over Ce,Zr or Fe promoted Ni-Mg-Al hydrotalcite-derived catalysts at low temperature[J].Energy Conversion and Management,2019,196:677-687. [19] Zhao G Q,Li C F,Wu X,et al.Reduced graphene oxide modified NiFe-calcinated layered double hydroxides for enhanced photocatalytic removal of methylene blue[J].Applied Surface Science,2018,434:251-259. [20] 卫彩云,谭静静,夏晓丽,等.焙烧温度对CuMgAl催化剂催化糠醇加氢制戊二醇的影响[J].化工学报,2019,70(4):1409-1419. [21] Li X L,Zhang Y,Jing L J,et al.Novel N-doped CNTs stabilized Cu2O nanoparticles as adsorbent for enhancing removal of Malachite Green and tetrabromobisphenolA[J].Chemical Engineering Journal,2016,292:326-339. [22] Lee S H,Tanaka M,Takahashi Y,et al.Enhanced adsorption of arsenate and antimonate by calcined Mg/Al layered double hydroxide:Investigation of comparative adsorption mechanism by surface characterization[J].Chemosphere,2018,211:903-911. [23] Luo Y J,Zheng Y B,Zuo J C,et al.Insights into the high performance of Mn-Co oxides derived from metal-organic frameworks for total toluene oxidation[J].Journal of Hazardous Materials,2018,349:119-127. [24] Gao G,Zhu Z,Zheng J,et al.Ultrathin magnetic Mg-Al LDH photocatalyst for enhanced CO2 reduction:Fabrication and mechanism[J].Journal of Colloid and Interface Science,2019,555:1-10. [25] Bing X M,Li J,Liu J,et al.Biomimetic synthesis of Bi2O3/Bi2WO6/MgAl-CLDH hybrids from lotus pollen and their enhanced adsorption and photocatalysisperformance[J].Journal of Photochemistry and Photobiology A:Chemistry,2018,364:449-460. [26] Pena-garcia R,Guerra Y,Santos F E P,et al.Structural and magnetic properties of Ni-doped yttrium iron garnet nanopowders[J].Journal of Magnetism and Magnetic Materials,2019,492:165650. [27] Pena-garcia R,Guerra Y,Buitrago D M,et al.Synthesis and characterization of yttrium iron garnet nanoparticles doped with cobalt[J].Ceramics International,2018,44(10):11314-11319. [28] Kong L C,Tian Y,Pang Z,et al.Synchronous phosphate and fluoride removal from water by 3D rice-like lanthanum-doped La@MgAl nanocomposites[J].Chemical Engineering Journal,2019,371:893-902. [29] Zhang H,Chen H,Azat S,et al.Super adsorption capability of rhombic dodecahedral Ca-Al layered double oxides for Congo red removal[J].Journal of Alloys and Compounds,2018,768:572-581.
