Abstract: Using ferric chloride hexahydrate and sodium fluoride as raw materials,and sodium citrate as a complexing agent,a fluorine-doped precursor is prepared via the hydrothermal method.F-doped α-Fe2O3 can be obtained through the thermal treatment of the precursor in the air at 650℃.Its structure,composition and morphology are characterized by XRD,SEM,EDS and FT-IR,and its photocatalytic degradation performance to methylene blue (MB) under visible light is investigated.It is shown that the doping of fluorine reduces the particle size of the material and increases the degree of dispersion.Meanwhile,the band gap of the material is reduced and the light absorption capacity is enhanced.The photocatalytic degradation rate of the best sample Fe2O3-3 to MB is 97.78%.After 4 times of repeated use,the degradation rate of MB by F-doped α-Fe2O3 can still reach 94.58%,representing a good degradation performance.
韩晴玉, 李呈呈, 骆艳芳, 那平. 氟掺杂α-Fe2O3的合成及光催化性能研究[J]. 现代化工, 2021, 41(4): 82-86.
HAN Qing-yu, LI Cheng-cheng, LUO Yan-fang, NA Ping. Preparation of fluorine doped α-Fe2O3 and its photocatalytic performance. Modern Chemical Industry, 2021, 41(4): 82-86.
[1] Benkhaya S,Rabet M,Harf A,et al.A review on classifications,recent synthesis and applications of textile dyes[J].Inorganic Chemistry Communications,2020,115:107891. [2] Fritzke W,Salla E G,Bagatini M D,et al.Peroxidase of Cedrela fissilis leaves:Biochemical characterization and toxicity of enzymatically decolored solution of textile dye Brilliant Sky-Blue G[J].Biocatalysis and Agricultural Biotechnology,2020,24:101553. [3] Rathour R,Jain K,Madamwar D,et al.Microaerophilic biodegradation of raw textile effluent by synergistic activity of bacterial community DR4[J].Journal of Environmental Management,2019,250:109549. [4] Wheeler D A,Wang G,Ling Y,et al.Nanostructured hematite:Synthesis,characterization,charge carrier dynamics,and photoelectrochemical properties[J].Energy & Environmental Science,2012,5(5):6672-6682. [5] 杨莹,袁青,张立.α-Fe2O3纳米粒子制备方法的研究进展[J].宜春学院学报,2020,42(3):31-36. [6] Zhang L,Bao Z,Yu X,et al.Rational design of α-Fe2O3/reduced graphene oxide composites:Rapid detection and effective removal of organic pollutants[J].ACS Applied Materials & Interfaces,2016,8(10):6431-6438. [7] Marschall R,Wang L.Non-metal doping of transition metal oxides for visible-light photocatalysis[J].Catalysis Today,2014,225:111-135. [8] Demirci S,Yurddaskal M,Dikici T,et al.Fabrication and characterization of novel iodine doped hollow and mesoporous hematite (Fe2O3) particles derived from sol-gel method and their photocatalytic performances[J].Journal of Hazardous Materials,2018,345:27-37. [9] Wang T T,Li Y,et al.Upgrading of coal tar with steam catalytic cracking over Al/Ce and Al/Zr co-doped Fe2O3 catalysts[J].Journal of Fuel Chemistry and Technology,2019,47(3):287-296. [10] Guo L,Chen F,Fan X,et al.S-doped α-Fe2O3 as a highly active heterogeneous Fenton-like catalyst towards the degradation of acid orange 7 and phenol[J].Applied Catalysis B:Environmental,2010,96(1-2):162-168. [11] Chang J,Zhang Q,Liu Y,et al.Preparation of Fe3O4/TiO2 magnetic photocatalyst for photocatalytic degradation of phenol[J].Journal of Materials Science:Materials in Electronics,2018,29(10):8258-8266. [12] Wang C W,Yang S,Fang W Q,et al.Engineered hematite mesoporous single crystals drive drastic enhancement in solar water splitting[J].Nano Letters,2015,16(1):427-433. [13] Takenaka S.Formation of filamentous carbons over supported Fe catalysts through methane decomposition[J].Journal of Catalysis,2004,222(2):520-531. [14] Jin X,Zhuang J,Zhang Z,et al.Hydrothermal synthesis of hydroxyapatite nanorods in the presence of sodium citrate and its aqueous colloidal stability evaluation in neutral pH[J].Journal of Colloid and Interface Science,2015,443:125-130. [15] Liu W,Zhao X,Borthwick A G L,et al.Dual-enhanced photocatalytic activity of Fe-deposited titanate Nanotubes Used for Simultaneous Removal of As(Ⅲ) and As(Ⅴ)[J].ACS Applied Materials & Interfaces,2015,7(35):19726-19735. [16] Bilgin Simsek E.Solvothermal synthesized boron doped TiO2 catalysts:Photocatalytic degradation of endocrine disrupting compounds and pharmaceuticals under visible light irradiation[J].Applied Catalysis B:Environmental,2017,200:309-322. [17] Sugranez R,Balbuena J,Cruz-Yusta M,et al.Efficient behaviour of hematite towards the photocatalytic degradation of NO gases[J].Applied Catalysis B:Environmental,2015,165:529-536. [18] Maensiri S,Masingboon C,Promarak V,et al.Synthesis and optical properties of nanocrystalline V-doped ZnO powders[J].Optical Materials,2007,29(12):1700-1705. [19] 毛娟,熊政伟,曹林洪.调控CNx薄膜的紫外-可见波段光学性能研究[J].真空科学与技术学报,2018,38(5):369-374. [20] Xiang Q,Yu J,Wong P K.Quantitative characterization of hydroxyl radicals produced by various photocatalysts[J].Journal of Colloid and Interface Science,2011,357(1):163-167.