BaFe2O4/BaSO4复合光催化剂的制备及降解罗丹明B废水的活性研究
收稿日期: 2020-08-03
网络出版日期: 2021-07-13
基金资助
河南省高等学校重点科研资助项目(16B150008)
Preparation of BaFe2O4/BaSO4 composite photocatalyst and study on the photocatalytic activity of degrading rhodamine B wastewater discharged from food processing plant
Received date: 2020-08-03
Online published: 2021-07-13
采用化学法、传统溶胶凝胶法和低温烧结技术合成了BaSO4、BaFe2O4和BaSO4/BaFe2O4复合物光催化剂。X射线粉末衍射和傅里叶红外光谱分析表明,BaSO4和BaFe2O4复合后未改变主晶格相的结构。表面形貌分析发现,BaSO4颗粒细小均匀,BaFe2O4颗粒较大且形貌不规则;当二者复合后颗粒尺寸变化较为明显。紫外可见吸收谱分析表明,5%BaSO4/BaFe2O4复合物光催化剂具有强的紫外可见光吸收能力;BaSO4、BaFe2O4、5%BaSO4/BaFe2O4和10%BaSO4/BaFe2O4复合物光催化剂的Eg值分别为3.23、2.89、2.74、2.26 eV。光催化结果表明,5%BaSO4/BaFe2O4光催化剂在降解罗丹明B染料方面比其他几种催化剂显示出了更高的光催化活性。光催化机理分析发现,空穴、羟基自由基和超氧自由基在染料降解过程中扮演了至关重要的角色。
郑伟 , 侯芳 , 高喜平 . BaFe2O4/BaSO4复合光催化剂的制备及降解罗丹明B废水的活性研究[J]. 无机盐工业, 2021 , 53(7) : 113 -118 . DOI: 10.19964/j.issn.1006-4990.2020-0437
：The BaSO4,BaFe2O4 and BaSO4/BaFe2O4 composite photocatalysts were synthesized by the chemical method,tradi-tional sol-gel method and low temperature sintering technique.X-ray powder diffraction and fourier transform infrared spec-troscopy analysis showed that the structure of the main lattice phase did not change after the combination of BaSO4 and BaFe2O4.The surface morphology analysis showed that the BaSO4 particles were fine and uniform,while BaFe2O4 particles were large and had irregular morphology.When the BaSO4 and BaFe2O4 were combined,the particle size changed obviously.UV-vis absorption spectra showed that 5%BaSO4/BaFe2O4 composite photocatalyst had strong UV-vis light absorption capac-ity.The Eg values of BaSO4,BaFe2O4,5%BaSO4/BaFe2O4 and 10%BaSO4/BaFe2O4 photocatalysts were about 3.23,2.89,2.74 and 2.26 eV,respectively.The photocatalytic results showed that the 5%BaSO4/BaFe2O4 photocatalyst showed the highest pho-tocatalytic activity for the degradation of Rhodamine B dye than that of other catalysts.The analysis of photocatalytic mechanism showed that hole,hydroxyl radical and superoxide radical played important roles in dye degradation process.
Key words： sol-gel method; composite; BaSO4; BaFe2O4; photocatalytic activity
| [1] | 肖姗姗, 毕菲, 赵丽, 等. 氧化亚铜基复合光催化剂的研究进展[J]. 无机盐工业, 2020, 52(1):22-25. |
| [2] | Yan Y X, Yang H, Yi Z, et al. Construction of Ag2S@CaTiO3 hetero-junction photocatalysts for enhanced photocatalytic degradation of dyes[J]. Desalination and Water Treatment, 2019, 170:349-360. |
| [3] | 安伟佳, 谢婉丽. 碳酸银光催化性能研究[J]. 无机盐工业, 2020, 52(3):107-111. |
| [4] | Ochiai T, Fujishima A. Photoelectrochemical properties of TiO2 pho-tocatalyst and its applications for environmental purification[J]. Journal of Photochemistry and Photobiology C:Photochemistry Re-views, 2012, 13(4):247-262. |
| [5] | Chen L, Zhang S, Wang L, et al. Photocatalytic activity of Zr:SrTiO3 under UV illumination[J]. Journal of Crystal Growth, 2009, 311(3):735-737. |
| [6] | 朱佳新, 熊裕华, 郭锐. 二氧化钛光催化剂改性研究进展[J]. 无机盐工业, 2020, 52(3):24-27. |
| [7] | 张树立, 徐旭鹏, 陈书锐, 等. 钒掺杂二氧化钛光催化活性研究[J]. 无机盐工业, 2020, 52(8):123-127. |
| [8] | Cui W, Chen L, Li J, et al. Ba-vacancy induces semiconductor-like photocatalysis on insulator BaSO4[J]. Applied Catalysis B:Enviro-nmental, 2019, 253:293-299. |
| [9] | 陈桂光, 骆广生, 杨雪瑞, 等. BaSO4/TiO2复合颗粒制备及其光催化性质[J]. 过程工程学报, 2005, 5(1):69-72. |
| [10] | Selvakumar R, Ashok A, Suriyaraj S, et al. Rapid and efficient visi-ble light photocatalytic dye degradation using AFe2O4(A=Ba,Ca and Sr) complex oxides[J]. Materials Science & Engineering B, 2016, 210:43-50. |
| [11] | Ay A N, Zümreoglu Karan B, Temel A, et al. Bioinorganic magnetic core-shell nanocomposites carrying antiarthritic agents:Intercala-tion of ibuprofen and glucuronic acid into Mg-Al-layered double hydroxides supported on magnesium ferrite[J]. Inorganic Chemi-stry, 2009, 48:8871-8887. |
| [12] | 张明, 李新海, 胡启阳, 等. EDTA络合法合成硫酸钡微粒[J]. 中国有色金属学报, 2009, 19(8):1511-1516. |
| [13] | Wang S F, Li Q, Zu X T, et al. Phase controlled synjournal of(Mg,Ca,Ba)-ferrite magnetic nanoparticles with high uniformity[J]. Journal of Magnetism and Magnetic Materials, 2016, 419(12):464-475. |
| [14] | 杨晓红. MgAl2O4:Ce荧光粉辐照合成及发光机理研究[J]. 无机盐工业, 2019, 51(9):30-35. |
| [15] | Salah N, Habib S S, Khan Z H, et al. Nanoparticles of BaSO4:Eu for heavy-dose measurements[J]. Journal of Luminescence, 2009, 129(3):192-196. |
| [16] | Gao H, Yang H, Wang S. Comparative study on optical and electro-chemical properties of MFe2O4(M=Mg,Ca,Ba) nanoparticles[J]. Transactions Indian Ceramic Society, 2018, 77(3):1-11. |
| [17] | Tachikawa T, Fujitsuka M, Majima T. Mechanistic insight into the TiO2 photocatalytic reactions:Design of new photocatalysts[J]. Journal of Physical Chemistry C, 2007, 111(14):5259-5275. |
| [18] | Arai T, Yanagida M, Konishi Y, et al. Efficient complete oxidation of acetaldehyde into CO2 over CuBi2O4/WO3 composite photocatalyst under visible and UV light irradiation[J]. Journal of Physical Chemistry C, 2007, 111(21):7574-7577. |
/
| 〈 |
|
〉 |
