Microwave assisted synthesis of ZnO-TiO<sub>2</sub> and its visible light catalytic denitrification activity

WANG Shu-qin; LI Xiao-xue; LI Dan

doi:10.1016/S1872-5813(22)60070-7

Volume 51 Issue 5

May 2023

Turn off MathJax

Article Contents

Article Navigation > Journal of Fuel Chemistry and Technology > 2023 > 51(5): 589-597

WANG Shu-qin, LI Xiao-xue, LI Dan. Microwave assisted synthesis of ZnO-TiO2 and its visible light catalytic denitrification activity[J]. Journal of Fuel Chemistry and Technology, 2023, 51(5): 589-597. doi: 10.1016/S1872-5813(22)60070-7

Citation:

WANG Shu-qin, LI Xiao-xue, LI Dan. Microwave assisted synthesis of ZnO-TiO₂ and its visible light catalytic denitrification activity[J]. Journal of Fuel Chemistry and Technology, 2023, 51(5): 589-597. doi: 10.1016/S1872-5813(22)60070-7

Citation:

PDF( 1652 KB)

Microwave assisted synthesis of ZnO-TiO₂ and its visible light catalytic denitrification activity

doi: 10.1016/S1872-5813(22)60070-7

WANG Shu-qin^{1, 2
,
,},
LI Xiao-xue¹,
LI Dan¹

1.
Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China
2.
Hebei Key Laboratory of Power Plant Flue Gas Multi-Pollutants Control, North China Electric Power University, Baoding 071003, China

Funds: The project was supported by the National Basic Research Program of China (2018YFB060420103) and National Natural Science Foundation of HeBei Province (E2014502111)

Received Date: 2022-09-25
Accepted Date: 2022-11-04
Rev Recd Date: 2022-10-24

Available Online: 2022-11-08

Publish Date: 2023-05-15

Abstract

Abstract

Comparing the composite TiO₂ prepared by hydrothermal sol gel method and microwave-assisted sol gel method, the microwave-assisted sol gel method with shorter time and better crystallinity was finally used to prepare ZnO-TiO₂ materials with different composite ratios. The specific surface area, pore volume and pore size of ZnO- TiO₂ composite are significantly larger than those of TiO₂. The surface acidity of ZnO-TiO₂ composite is stronger. The band structure is conducive to the efficient separation of electrons and holes, and the catalytic reduction activity and selectivity are stronger. The best composite ratio of ZnO and TiO₂ is optimized to be 0.2 through photocatalytic denitration experiments. For NO_x with an initial concentration of 6.83 mg/m³, under the light source condition irradiated by 65 W energy-saving lamp, the visible photocatalytic removal efficiency is as high as 85%. When the NO_x concentration is increased to 13.67 mg/m³ and the ammonia nitrogen ratio is 1∶1, the denitration efficiency is as high as 96%, which is 43% higher than that of pure TiO₂. According to mechanism analysis, the whole reaction can be divided into adsorption and photocatalysis. Adsorption is the speed control step of the reaction. NO is oxidized to NO₂ under the action of adsorbed oxygen, and photogenerated electrons can further reduce NO₂ to N₂. After NH₃ is introduced, NH₃ and photogenerated electrons work together to improve NO_x removal efficiency.
- ZnO-TiO₂,
- denitration,
- visible light catalysis

FullText(HTML)

References(29)

References

[1]	HAN L, CAI S, GAO M, HASEGAWA J Y, WANG P, ZHANG J, SHI L, ZHANG D. Selective catalytic reduction of NO_x with NH₃ by using novel catalysts: State of the art and future prospects[J]. Chem Rev,2019,119(19):10916−10976. doi: 10.1021/acs.chemrev.9b00202
[2]	PERUMAL S K, KAISARE N, KUMMARI S K, AGHALAYAM P. Low-temperature NH₃-SCR of NO over robust RuNi/Al-SBA-15 catalysts: Effect of Ru loading[J]. J Environ Chem Eng,2022,10(5):108288. doi: 10.1016/j.jece.2022.108288
[3]	SHANG X, HU G, HE C, ZHAO J, ZHANG F, XU Y, ZHANG Y, LI J, CHEN J. Regeneration of full-scale commercial honeycomb monolith catalyst (V₂O₅-WO₃/TiO₂) used in coal-fired power plant[J]. J Ind Eng Chem,2012,18(1):513−519. doi: 10.1016/j.jiec.2011.11.070
[4]	QI C, BAO W, WANG L, LI H, WU W. Study of the V₂O₅-WO₃/TiO₂ catalyst synthesized from waste catalyst on selective catalytic reduction of NO_x by NH₃[J]. Catalysts,2017,7(12):.110−110. doi: 10.3390/catal7040110
[5]	ZHANG F, CHENG Z, KANG L, CUI L, LIU W, XU X, HOU G, YANG H. A novel preparation of Ag-doped TiO₂ nanofibers with enhanced stability of photocatalytic activity[J]. RSC Adv,2015,5(41):32088−32091. doi: 10.1039/C5RA01353D
[6]	PETERNEL I T, KOPRIVANAC N, BOZIC A M, KUSIC H M. Comparative study of UV/TiO₂, UV/ZnO and photo-Fenton processes for the organic reactive dye degradation in aqueous solution[J]. J Hazard Mater,2007,148(1/2):477−484.
[7]	MOFOKENG S J, KUMAR V, KROON R E, NTWAEABORWA O M. Structure and optical properties of Dy³⁺ activated sol-gel ZnO-TiO₂ nanocomposites[J]. J Alloys Compd,2017,711:121−131. doi: 10.1016/j.jallcom.2017.03.345
[8]	HAN J, LIU Y, SINGHAL N, WANG L, GAO W. Comparative photocatalytic degradation of estrone in water by ZnO and TiO₂ under artificial UVA and solar irradiation[J]. Chem Eng J,2012,213:150−162. doi: 10.1016/j.cej.2012.09.066
[9]	TASSALIT D, CHEKIR N, BENHABILES O, BENTAHAR F, LAOUFI N A. Photocatalytic Degradation of Tylosin and Spiramycin in Water by using TiO₂ and ZnO Catalysts under UV Radiation[M]. Energy, Transportation and Global Warming. City, 2016: 695–706.
[10]	PRASANNALAKSHMI P, SHANMUGAM N. Fabrication of TiO₂/ZnO nanocomposites for solar energy driven photocatalysis[J]. Mater Sci Semicond Process,2017,61:114−124. doi: 10.1016/j.mssp.2017.01.008
[11]	ZHANG P, WANG T, CHANG X, GONG J. Effective charge carrier utilization in photocatalytic conversions[J]. Acc Chem Res,2016,49(5):911−921. doi: 10.1021/acs.accounts.6b00036
[12]	SHENG F, XU C, JIN Z, GUO J, FANG S, SHI Z, WANG J. Simulation on Field Enhanced Electron Transfer between the Interface of ZnO-Ag Nanocomposite[J]. J Phys Chem C,2013,117(36):18627−18633. doi: 10.1021/jp405186c
[13]	SARKAR A, SINGH A K, KHAN G G, SARKAR D, MANDAL K. TiO₂/ZnO core/shell nano-heterostructure arrays as photo-electrodes with enhanced visible light photoelectrochemical performance[J]. RSC Adv,2014,4(98):55629−55634. doi: 10.1039/C4RA09456E
[14]	SABZEHMEIDANI M M, KARIMI H, GHAEDI M. Sonophotocatalytic treatment of rhodamine B using visible-light-driven CeO₂/Ag₂CrO₄ composite in a batch mode based on ribbon-like CeO₂ nanofibers via electrospinning[J]. Environ Sci Pollut Res Int,2019,26(8):8050−8068. doi: 10.1007/s11356-019-04253-8
[15]	ZHANG L, LI H, LIU Y, TIAN Z, YANG B, SUN Z, YAN S. Adsorption-photocatalytic degradation of methyl orange over a facile one-step hydrothermally synthesized TiO₂/ZnO-NH₂-RGO nanocomposite[J]. RSC Adv,2014,4(89):48703−48711. doi: 10.1039/C4RA09227A
[16]	王淑勤, 武金锦, 杜志辉. Co-Ce共掺杂对TiO₂催化剂室温可见光催化脱硝性能的影响[J]. 燃料化学学报,2019,47(3):361−369. WANG Shu-qin, WU Jin-jin, DU Zhi-hui. Study on selective catalytic reduction denitration performance of Ce-Co co-doped TiO₂ catalyst[J]. J Fuel Chem Technol,2019,47(3):361−369.
[17]	王淑勤, 李金梦, 刘文博. 氟钒锰共掺对TiO₂柱撑膨润土光催化脱硝性能的影响[J]. 燃料化学学报,2020,48(9):1131−1139. doi: 10.3969/j.issn.0253-2409.2020.09.013 WANG Shu-qin, LI Jin-meng, LIU Wen-bo. Effect of F, V and Mn co-doping on the catalytic performance of TiO₂-pillared bentonite in the photocatalytic denitration[J]. J Fuel Chem Technol,2020,48(9):1131−1139. doi: 10.3969/j.issn.0253-2409.2020.09.013
[18]	DELSOUZ KHAKI M R, SHAFEEYAN M S, RAMAN A A A, DAUD W M A W. Evaluating the efficiency of nano-sized Cu doped TiO₂/ZnO photocatalyst under visible light irradiation[J]. J Mol Liq,2018,258:354−365. doi: 10.1016/j.molliq.2017.11.030
[19]	HARIHARAN C. Photocatalytic degradation of organic contaminants in water by ZnO nanoparticles: Revisited[J]. Appl Catal A: Gen,2006,304:55−61. doi: 10.1016/j.apcata.2006.02.020
[20]	KWIATKOWSKI M, BEZVERKHYY I, SKOMPSKA M. ZnO nanorods covered with a TiO₂ layer: Simple sol-gel preparation, and optical, photocatalytic and photoelectrochemical properties[J]. J Mater Chem A,2015,3(24):12748−12760. doi: 10.1039/C5TA01087J
[21]	陈玉婷, 朱雷, 肖扬帆. 镧改性ZnO-TiO₂光催化氧化活性染料的实验研究[J]. 工业安全与环保,2015,41(1):4−7 + 32. doi: 10.3969/j.issn.1001-425X.2015.01.002 CHEN Yu-ting, ZHU Lei, XIAO Yang-fan. Experimental study on lanthanum modified ZnO-TiO₂ photocatalytic oxidation of reactive dyes[J]. Ind Safety Environ Prot,2015,41(1):4−7 + 32. doi: 10.3969/j.issn.1001-425X.2015.01.002
[22]	CHEN D, ZHANG H, HU S, LI J H. Preparation and enhanced photoelectrochemical performance of coupled bicomponent ZnO-TiO₂ nanocomposites[J]. J Phys Chem C,2011,112:117−122.
[23]	ZHAO Y, HAN J, SHAO Y, FENG Y. Simultaneous SO₂ and NO removal from flue gas based on TiO₂ photocatalytic oxidation[J]. Environ Technol,2009,30(14):1555−1563. doi: 10.1080/09593330903313786
[24]	刘磊. SiO₂基宽光谱光热转化相变储能纳米胶囊制备及性能研究[D]. 北京: 北京科技大学, 2022. LIU Lei. Preparation and characterization of SiO₂-based wide spectrum photothermal conversion phase-change energy storage nanocapsules [D]. Beijing: University of Science and Technology Beijing , 2022.
[25]	SHANMUGAM M, ALSALME A, ALGHAMDI A, JAYAVEL R. In-situ microwave synthesis of graphene-TiO₂ nanocomposites with enhanced photocatalytic properties for the degradation of organic pollutants[J]. J Photochem Photobiol B,2016,163:216−223. doi: 10.1016/j.jphotobiol.2016.08.029
[26]	XIE C, YANG S, LI B, WANG H, SHI J W, LI G, NIU C. C-doped mesoporous anatase TiO₂ comprising 10nm crystallites[J]. J Colloid Interface Sci,2016,476:1−8. doi: 10.1016/j.jcis.2016.01.080
[27]	SUWARNKAR M B, DHABBE R S, KADAM A N, GARADKAR K M. Enhanced photocatalytic activity of Ag doped TiO₂ nanoparticles synthesized by a microwave assisted method[J]. Ceram Int,2014,40(4):5489−5496. doi: 10.1016/j.ceramint.2013.10.137
[28]	莫晓朋. 溶胶凝胶–微波法合成LiTi₂(PO₄)₃及其电化学性能研究[D]. 郑州: 郑州大学, 2012. MO Xiao-ming. Study on electrochemical properties of LiTi₂(PO₄)₃ synthesized by sol-gel and microwave method[D]. Zhengzhou: Zhengzhou University , 2012.
[29]	刘月, 余林, 魏志钢, 潘湛昌, 邹燕娣, 谢英豪. 稀土金属掺杂对锐钛矿型TiO₂光催化活性影响的理论和实验研究[J]. 高等学校化学学报,2013,34(2):434−440. doi: 10.7503/cjcu20120487 LIU Yue, YU Lin, WEI Zhi-gang, PAN Zhan-chang, ZOU Yan-di, XIE Ying-hao. Theoretical and experimental studies on photocatalytic potential of rare earth doped anatase TiO₂[J]. Chem J Chin Univ,2013,34(2):434−440. doi: 10.7503/cjcu20120487