| Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences | Host |
| Citation: |
LIU Yuchen, LI Yan, WU Meili, YIN Chao, ZHAO Sikai, SHEN Yanbai. Preparation of Diatomite-Based Composite Photocatalyst and Its Application in the Xanthate Degradation[J]. Conservation and Utilization of Mineral Resources, 2022, 42(4): 76-84. doi: 10.13779/j.cnki.issn1001-0076.2022.04.009
|
Preparation of Diatomite-Based Composite Photocatalyst and Its Application in the Xanthate Degradation
-
Abstract
In order to achieve effective degradation of residual xanthate in flotation wastewater, TiO2/diatomite binary composite photocatalyst was firstly prepared by oil bath precipitation method, and the effects of TiO2 loading amount and H2O2 addition amount on the xanthate degradation performance of the product were investigated under the UV irradiation. Based on the optimized binary composite photocatalyst, BiOCl/TiO2/diatomite ternary photocatalyst was then prepared by water bath precipitation method, and the effect of BiOCl loading amount on the xanthate degradation performance of the ternary photocatalyst was explored. The results showed that the binary composite photocatalyst possessed the optimal degradation performance to xanthate when the mass ratio of TiO2 to diatomite was 1 GA6FA 5 and the amount of H2O2 with the concentration of 30% was 2 mL. The degradation efficiency of xanthate was about 60% within 60 min under the condition. Furthermore, the ternary photocatalyst showed the optimal photodegradation performance to xanthate when the mass ratio of BiOCl to TiO2 and diatomite was 1 GA6FA 2 GA6FA 10. The degradation efficiency of xanthate could reach more than 90% within 90 min under the circumstance. Compared with the binary composite photocatalysts, BiOCl/TiO2/diatomite ternary photocatalysts can not only achieve the degradation of xanthate from higher energy UV light to common visible light, but also show better degradation performance of xanthate, showing the potential practical application prospect.
-
Keywords:
- diatomite /
- TiO2 /
- BiOCl /
- composite photocatalyst /
- xanthate degradation
-
-
References
[1] ZHOU P F, SHEN Y B, ZHAO S K, et al. Hydrothermal synthesis of novel ternary hierarchical MoS2/TiO2/clinoptilolite nanocomposites with remarkably enhanced visible light response towards xanthates[J]. Applied Surface Science, 2021, 542: 148578. doi: 10.1016/j.apsusc.2020.148578 [2] JIANG M, ZHANG M H, WANG L Z, et al. Photocatalytic degradation of xanthate in flotation plant tailings by TiO2/graphene nanocomposites[J]. Chemical Engineering Journal, 2022, 431: 134104. doi: 10.1016/j.cej.2021.134104 [3] AMROLLAHI A, MASSINAEI M, ZERAATKAR M A. Removal of the residual xanthate from flotation plant tailings using bentonite modified by magnetic nano-particles[J]. Minerals Engineering, 2019, 134: 142-155. doi: 10.1016/j.mineng.2019.01.031 [4] SHEN Y B, ZHOU P F, ZHAO S K, et al. Synthesis of high-efficient TiO2/clinoptilolite photocatalyst for complete degradation of xanthate[J]. Minerals Engineering, 2020, 159: 106640. doi: 10.1016/j.mineng.2020.106640 [5] MA D S, YI H, LAI C, et al. Critical review of advanced oxidation processes in organic wastewater treatment[J]. Chemosphere, 2021, 275: 130104. doi: 10.1016/j.chemosphere.2021.130104 [6] MIKLOS D B, REMY C, JEKEL M, et al. Evaluation of advanced oxidation processes for water and wastewater treatment-A critical review[J]. Water Research, 2018, 139: 118-131. doi: 10.1016/j.watres.2018.03.042 [7] 李诺, 刘苏宁, 于淼, 等. 选矿废水残留浮选药剂氧化降解试验研究[J]. 中国有色冶金, 2020, 49(5): 57-61. LI N, LIU S N, YU M, et al. Experimental study on oxidation degradation of flotation reagent residues in beneficiation wastewater[J]. China Nonferrous Metallurgy, 2020, 49(5): 57-61. [8] FUJISHIMA A, HONDA K. Electrochemical photolysis of water at a semiconductor electrode[J]. Nature, 1972, 238(5358): 37-38. doi: 10.1038/238037a0 [9] 付小航, 王林祥, 李瑶, 等. 可见光回应手性TiO2复合光催化剂及其降解有机污染物[J]. 环境科学学报, 2021, 41(12): 4862-4870. FU X H, WANG L X, LI Y, et al. Chiral TiO2-based photocatalysts with visible light response and their photodegradation of organic pollutants[J]. Acta Scientiae Circumstantiae, 2021, 41(12): 4862-4870. [10] GE M, HU Z, WEI J L, et al. Recent advances in persulfate-assisted TiO2-based photocatalysis for wastewater treatment: performances, mechanism and perspectives[J]. Journal of Alloys and Compounds, 2021, 888: 161625. doi: 10.1016/j.jallcom.2021.161625 [11] ZHANG X W, LI C Q, CHEN T, et al. Enhanced visible-light-assisted peroxymonosulfate activation over MnFe2O4 modified g-C3N4/diatomite composite for bisphenol a degradation[J]. International Journal of Mining Science and Technology, 2021, 31(6): 1169-1179. doi: 10.1016/j.ijmst.2021.11.008 [12] ZHANG G X, LIU Y Y, HASHISHO Z, et al. Adsorption and photocatalytic degradation performances of TiO2/diatomite composite for volatile organic compounds: effects of key parameters[J]. Applied Surface Science, 2020, 525: 146633. doi: 10.1016/j.apsusc.2020.146633 [13] LIU C, REN Y H, WANG Z W, et al. Flowerlike BiOCl nanospheres fabricated by an in situ self-assembly strategy for efficiently enhancing photocatalysis[J]. Journal of Colloid and Interface Science, 2022, 607: 423-430. doi: 10.1016/j.jcis.2021.09.002 [14] ZHANG G X, LIU Y Y, ZHENG S L, et al. Efficient removal of formaldehyde by diatomite decorated with BiOCl/TiO2 under visible-light irradiation: effects of key preparation parameters[J]. Advanced Powder Technology, 2021, 32(11): 4364-4372. doi: 10.1016/j.apt.2021.09.041 [15] AO M L, LIU K, TANG X K, et al. BiOCl/TiO2/diatomite composites with enhanced visible-light photocatalytic activity for the degradation of rhodamine B[J]. Beilstein Journal of Nanotechnology, 2019, 10: 1412-1422. doi: 10.3762/bjnano.10.139 [16] MISHRA A, MEHTA A, KAINTH S, et al. Effect of g-C3N4 loading on TiO2/Bentonite nanocomposites for efficient heterogeneous photocatalytic degradation of industrial dye under visible light[J]. Journal of Alloys and Compounds, 2018, 764: 406-15. doi: 10.1016/j.jallcom.2018.06.089 [17] ZOU J, GAO J C, XIE F Y. An amorphous TiO2 sol sensitized with H2O2 with the enhancement of photocatalytic activity[J]. Journal of Alloys and Compounds, 2010, 497(1): 420-427. [18] ZOU J, GAO J C, WANG Y. Synthesis of highly active H2O2-sensitized sulfated titania nanoparticles with a response to visible light[J]. Journal of Photochemistry and Photobiology A: Chemistry, 2009, 202(2): 128-135. [19] YAN G L, CHEN J, HUA Z Z. Roles of H2O2 and OH radical in bactericidal action of immobilized TiO2 thin-film reactor: an ESR study[J]. Journal of Photochemistry and Photobiology A: Chemistry, 2009, 207(2): 153-159. [20] LI H, LI J, AI Z H, et al. Oxygen vacancy-mediated photocatalysis of BiOCl: reactivity, selectivity, and perspectives[J]. Angewandte Chemie International Edition, 2018, 57(1): 122-138. doi: 10.1002/anie.201705628 [21] WANG X X, NI Q, ZENG D W, et al. BiOCl/TiO2 heterojunction network with high energy facet exposed for highly efficient photocatalytic degradation of benzene[J]. Applied Surface Science, 2017, 396: 590-598. doi: 10.1016/j.apsusc.2016.10.201 [22] HU X L, SUN Z M, SONG J Y, et al. Synthesis of novel ternary heterogeneous BiOCl/TiO2/sepiolite composite with enhanced visible-light-induced photocatalytic activity towards tetracycline[J]. Journal of Colloid and Interface Science, 2019, 533: 238-250. -
Access History
Figures(12)
Export File
Citation
LIU Yuchen, LI Yan, WU Meili, YIN Chao, ZHAO Sikai, SHEN Yanbai. Preparation of Diatomite-Based Composite Photocatalyst and Its Application in the Xanthate Degradation[J]. Conservation and Utilization of Mineral Resources, 2022, 42(4): 76-84. doi: 10.13779/j.cnki.issn1001-0076.2022.04.009
Format
Content
DownLoad:
-
Figure 1.
Preparation process of diatomite-based composite photocatalyst
-
Figure 2.
Molecular structure and ball-stick model of sodium isopropyl xanthate
-
Figure 3.
UV-vis absorption spectrum (a) and standard curve of SIPX (b)
-
Figure 4.
Device diagram of the photochemical reactor
-
Figure 5.
XRD patterns of TD composite photocatalysts with different TiO2 loading amounts
-
Figure 6.
SEM images and corresponding EDS spectra of TD composite photocatalysts with different TiO2 loading amounts
-
Figure 7.
XRD patterns of BTD composite photocatalysts with different BiOCl loading amounts
-
Figure 8.
SEM images and corresponding EDS spectra of BTD composite photocatalysts with different BiOCl loading amounts
-
Figure 9.
Effect of TiO2 loading amount on xanthate degradation performance of TD composite photocatalyst
-
Figure 10.
Effect of H2O2 dosages on xanthate degradation performance of TD composite photocatalyst
-
Figure 11.
Effect of BiOCl loading amount on xanthate degradation performance of BTD composite photocatalyst
-
Figure 12.
Degradation efficiencies of TD and BTD composite photocatalyst to xanthate under visible light