Journal of Guangdong University of Technology ›› 2020, Vol. 37 ›› Issue (04): 84-90.doi: 10.12052/gdutxb.190138

Previous Articles     Next Articles

A Study of the Modification of Nano-CuO Photocatalyst by Ethanol Quenching

Hu Lu-guo1, Hu Zheng-fa1,2, Xiao Yang1, Wang Yin-hai1, Zhao Hui1   

  1. 1. School of Physics & Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China;
    2. Synergy Innovation Institute for Modern Industries of GDUT, Heyuan 517000, China
  • Received:2019-11-11 Online:2020-07-11 Published:2020-07-02

HTML

PDF (PC)

2702

Abstract: A facile method is developed to modify the surface of nano-CuO by absolute ethanol quenching was developed, which results in enhancing the photocatalytic performance. The nano-CuO is heated to a high temperature (800 ℃) and immediately quenched by submersion in absolute ethanol. The photocatalytic decomposition of rhodamine B demonstrates that, under ultraviolet light irradiation, a better photocatalytic performance is achieved with our modified CuO. The characterization of the samples indicates that by absolute ethanol quenching, the interaction between hot CuO and absolute ethanol leads to the introduction of a high concentration of oxygen vacancies on the surface of the Nano-CuO. The CuO-Cu2O heterojunctions and Cu-CuO/Cu2O Schottky heterojunctions may be formed as well because of the Cu2O and Cu reduced by absolute ethanol. This further illustrates that the ethanol quenching method can effectively modify the surface of metal oxides, increase surface oxygen vacancies on the oxides, even form heterojunctions, and improve the photocatalytic performance of the materials.

Key words: oxygen vacancies, CuO, photocatalysis, ethanol quenching

CLC Number: 

  • O643.36
[1] LEGRINI O, OLIVEROS E, BRAUN AM. Photochemical processes for water treatment [J]. Chemical Reviews, 1993, 93(2): 671-698
[2] 陈志良, 彭晓春, 杨兵, 等. 有色金属冶炼污染场地土壤和地下水污染特征研究[J]. 广东工业大学学报, 2013, 30(2): 119-122
CHEN Z L, PENG X C, YANG B, et al. Characteristics of soil and groundwater pollution in non-ferrous metal smelting plants [J]. Journal of Guangdong University of Technology, 2013, 30(2): 119-122
[3] LU N, ZHANG Z Y, DONG B, et al. Direct evidence of IR-driven hot electron transfer in metal-free plasmonic W18O49/Carbon heterostructures for enhanced catalytic H2 production [J]. Applied Catalysis B: Environmental, 2018, 233: 19-25
[4] KRISHNAMOORTHY K, MOHAN R, KIM S. Graphene oxide as a photocatalytic material [J]. Applied Physics Letters, 2011, 98(24): 244101
[5] 许巍, 袁斌, 孙水裕, 等. 城镇污染河流修复技术研究进展[J]. 广东工业大学学报, 2004, 21(4): 85-90
XU W, YUAN B, SUN S Y, et al. Progress of water pollution remediation techniques in city and town river [J]. Journal of Guangdong University of Technology, 2004, 21(4): 85-90
[6] ANI L J, AKPAN U G, HAMEED B H, et al. Photocatalytic degradation of pollutants in petroleum refinery wastewater by TiO2-and ZnO-based photocatalysts: Recent development [J]. Journal of Cleaner Production, 2018, 205: 930-954
[7] LIU J, LI Y, SU B L, et al. Tailoring CuO nanostructures for enhanced photocatalytic property [J]. Journal of Colloid and Interface Science, 2012, 384(1): 1-9
[8] ZHU J, QIAN X F. From 2-D CuO nanosheets to 3-D hollow nanospheres: interface-assisted synthesis, surface photovoltage properties and photocatalytic activity [J]. Journal of Solid State Chemistry, 2010, 183(7): 1632-1639
[9] VASEEM M, UMAR A, HAHN Y B, et al. Flower-shaped CuO nanostructures: Structural, photocatalytic and XANES studies [J]. Catalysis Communications, 2008, 10(1): 11-16
[10] TAN Y B, JIA Z Q, SUN J Y, et al. Controllable synthesis of hollow copper oxide encapsulated into N-doped carbon nanosheets as high-stability anodes for lithium-ion batteries [J]. Journal of Materials Chemistry A, 2017, 5(46): 24139-24144
[11] REZAIEA A B, MONTAZER M, RAD M M, et al. Environmentally friendly low cost approach for nano copper oxide functionalization of cotton designed for antibacterial and photocatalytic applications [J]. Journal of Cleaner Production, 2018, 204: 425-436
[12] DUAN L P, YIN S S, LI M Q, et al. The synthesis of dandelion-like CuO nanoflowers and photocatalytic degradation of RhB [J]. Colloid and Polymer Science, 2017, 295(10): 1797-1803
[13] YANG F, ZHANG X F, CUI L S, et al. Characteristics and supercapacitive performance of nanoporous bamboo leaf-like CuO [J]. Chemical Physics Letters, 2018, 691: 366-372
[14] NAKATE U T, HAHN Y B, SUH E K, et al. Nano-bitter gourd like structured CuO for enhanced hydrogen gas sensor application [J]. International Journal of Hydrogen Energy, 2018, 43(50): 22705-22714
[15] YANG L F, CHU D P, WANG L M. CuO core-shell nanostructures: Precursor-mediated fabrication and visible-light induced photocatalytic degradation of organic pollutants [J]. Powder Technology, 2016, 287: 346-354
[16] GOU X F, SUN S D, YANG Z M, et al. A very facile strategy for the synthesis of ultrathin CuO nanorods towards non-enzymatic glucose sensing [J]. New Journal of Chemistry, 2018, 42(8): 6364-6369
[17] LI R, CHAN K C, Lu Z P, et al. Synthesis of well-aligned CuO nanowire array integrated with nanoporous CuO network for oxidative degradation of methylene blue [J]. Corrosion Science, 2017, 126: 37-43
[18] XIAO S N, PAN D L, ZHANG D Q, et al. Porous CuO nanotubes/graphene with sandwich architecture as high-performance anodes for lithium-ion batteries [J]. Nanoscale, 2016, 8(46): 19343-19351
[19] PHIWDANG K, SUPHANKIJ S, MEKPRASART W, et al. Synthesis of CuO nanoparticles by precipitation method using different precursors [J]. Energy Procedia, 2013, 34: 740-745
[20] LIM Y F, CHUA C S, LEE C J J, et al. Sol-gel deposited Cu2O and CuO thin films for photocatalytic water splitting [J]. Physical Chemistry Chemical Physics, 2014, 16 (47): 25928-25934
[21] XIAO H M, FU S Y, ZHU L P, et al. Controlled synthesis and characterization of CuO nanostructures through a facile hydrothermal route in the presence of sodium citrate [J]. European Journal of Inorganic Chemistry, 2007, 2007(14): 1966-1971
[22] TOBOONSUNG B, SINGJAI P. Formation of CuO nanorods and their bundles by an electrochemical dissolution and deposition process [J]. Journal of Alloys and Compounds, 2011, 509(10): 4132-4137
[23] JIN Z L, ZHANG X J, LU G X, et al. 5.1% Apparent quantum efficiency for stable hydrogen generation over eosin-sensitized CuO/TiO2 photocatalyst under visible light irradiation [J]. Catalysis Communications, 2007, 8(8): 1267-1273
[24] SONG X M, YUAN C X, ZHANG Y, et al. ZnO/CuO photoelectrode with n-p heterogeneous structure for photoelectrocatalytic oxidation of formaldehyde [J]. Applied Surface Science, 2018, 455: 181-186
[25] BENEDETTO A D, LANDI G, LISI L. CO reactive adsorption at low temperature over CuO/CeO2 structured catalytic monolith [J]. International Journal of Hydrogen Energy, 2017, 42(17): 12262-12275
[26] CHEN S H, XIAO Y, WANG Y H, et al. Ethanol-quenching modified the surface environment of titanium dioxide for visible light-assisted hydrogen production [J]. Catalysis Science & Technology, 2019, 9 (16): 4222-4225
[27] XIAO Y, CHEN S H, WANG Y H, et al. Ethanol-quenching introduced oxygen vacancies in strontium titanate surface and the enhanced photocatalytic activity [J]. Nanomaterials, 2019, 9(6): 883
[28] LIU J L, WEN M, WU Q S, et al. Assembly of TiO2-on-Cu2O nanocubes with narrow-band Cu2O-induced visible-light-enhanced photocatalytic activity [J]. Chem Plus Chem, 2014, 79(2): 298-303
[29] YAN J Q, LI L D, GONG J L, et al. Tungsten oxide single crystal nanosheets for enhanced multichannel solar light harvesting [J]. Advanced Materials, 2015, 27(9): 1580-1586
[30] MOTAUNG D E, MAKGWANE P R, RAY S S. Induced ferromagnetic and gas sensing properties in ZnO-nanostructures by altering defect concentration of oxygen and zinc vacancies [J]. Materials Letters, 2015, 139: 475-479
[31] WENCKA M, JELEN A, KHARE V, et al. Magnetic and EPR study of ferric green rust- and ferrihydrite-coated sand prepared by different synthesis routes [J]. Journal of Physics D: Applied Physics, 2009, 42(24): 245301
[32] TAHIR D, TOUGAARD S. Electronic and optical properties of Cu, CuO and Cu2O studied by electron spectroscopy [J]. Journal of Physics: Condensed Matter, 2012, 24(17): 175002
[33] GHIJSEN J, TJENG L H, VAN ELP J, et al. Electronic structure of Cu2O and CuO [J]. Physical Review B, 1988, 38(16): 11322-11330
[34] MARIOT J M, BARNOLE V, HAGUE C F, et al. Local electronic structure of Cu2O, CuO and YBa2Cu3O7-δ [J]. Z Phys B-Condensed Matte, 1989, 75(1): 1-9
[35] JILANI A, ABDEL-WAHAB M S, OTHMAN M H D, et al. Sputtered CuO mono-phase thin films: structural, compositional and spectroscopic linear/nonlinear optical characteristics [J]. Optik, 2017, 144: 207-218
[36] PAN X, YANG M Q, FU X, et al. Defective TiO2 with oxygen vacancies: synthesis, properties and photocatalytic applications [J]. Nanoscale, 2013, 5(9): 3601-3614
[37] YU J C, YU J G, HO W, et al. Effects of F-doping on the photocatalytic activity and microstructures of nanocrystalline TiO2 powders [J]. Chemistry of Materials, 2002, 14(9): 3808-3816
[38] XIA T, ZHANG Y, MUROWCHICK J, et al. Vacuum-treated titanium dioxide nanocrystals: optical properties, surface disorder, oxygen vacancy, and photocatalytic activities [J]. Catalysis Today, 2014, 225: 2-9
[39] XU Y, SCHOONEN M A A. The absolute energy positions of conduction and valence bands of selected semiconducting minerals [J]. American Mineralogist, 2000, 85(3-4): 543-556
[1] Cao Yi-ting, Wang Qiao, Xu Ze-tao, Lyu Guan-heng. Research Progress of MOF/Bismuth-based Semiconductor Composites in Photocatalytic Technology [J]. Journal of Guangdong University of Technology, 2022, 39(04): 113-120.
[2] FU Li-Peng, ZHANG Guo-Qing, YANG Cheng-Zhao. Degradation of Reactive Black Dye GR in Engineering Photocatalytic Reactors Coated with TiC2 [J]. Journal of Guangdong University of Technology, 2010, 27(1): 28-32.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
Copyright © 2017 Journal of Guangdong University of Technology
Add：729 East Dongfeng RD., Guangzhou PRC. Postcode: 510090
Tel：020-37626653,020-37626139,020-37626396
Email：xbzrb@gdut.edu.cn
Supported:Beijing Magtech