化工新型材料

化工新型材料 ›› 2020, Vol. 48 ›› Issue (6) : 242-246.

开发与应用

还原氧化石墨烯@TiO₂纳米复合材料的制备及光催化性能研究

^1,2

作者信息 +

Synthesis and photocatalytic performance of rGO@TiO₂ nanocomposite

Huang Danchun^1,2, Li Lei^1,2, Jiang Lei³, Liu Liu³, Gu Jian^1,2, Tao Bowen^1,2

Author information +

文章历史 +

Received		Published
2019-02-17		2020-06-20
Issue Date	Revised Date
2020-07-02	2019-02-17

PDF (3522K)

摘要

采用液相自组装-高温还原法,以纳米TiO₂和氧化石墨烯(GO)为原料,制备得到了还原氧化石墨烯@纳米TiO₂(rGO@TiO₂)复合材料。利用X射线衍射、红外吸收光谱、扫描电子显微镜及能谱分析和拉曼光谱对样品的晶体结构、表面形貌、元素组成进行了表征;采用接触角测试对样品的疏水性进行了评价;以染料亚甲基蓝为目标降解物,以紫外光为光源,对rGO@TiO₂的光催化活性进行了评价。结果表明:该方法成功制备出rGO@TiO₂复合材料,且复合材料中rGO很好地吸附在TiO₂表面;rGO@TiO₂表现出一定的疏水性,水接触角可达129.4°;而且rGO@TiO₂对亚甲基蓝具有很好的光降解作用,10min内的降解率达到75.9%。

Abstract

Reduced graphene oxide@TiO₂ (rGO@TiO₂) nanocomposite was prepared by nano-TiO₂ and graphene oxide (GO) via a solution self-assembly method and a high-temperature reduction process.The as-prepared rGO@TiO₂ nanoparticles were characterized by X-ray diffraction (XRD),fourier-transform infrared spectroscopy (FT-IR),scanning electron microscopy (SEM),energy dispersive X-ray spectroscopy (EDX) and Raman spectra.The results revealed that the nano-TiO₂ was successfully adsorbed on graphene sheets and the GO was efficiently reduced to rGO.Water contact angle was tested to measure hydrophobicity changes from TiO₂ to rGO@TiO₂.The results shown that rGO@TiO₂ had higher hydrophobicity than TiO₂,as the water contact angle was increased to 129.4° when TiO₂ was coated with rGO.Furthermore,the photocatalytic property of obtained rGO@TiO₂ was investigated by degrading the methylene blue solution under UV irradiation.After 10min under UV irradiation,the degradation rate of methylene blue with rGO@TiO₂ was 75.9%,indicating that rGO@TiO₂ nanocomposite could be a promising additive for accelerating the photocatalytic degradation of methylene blue.

关键词

还原氧化石墨烯@TiO₂纳米复合材料 / 催化剂 / 污染 / 疏水性

Key words

rGO@TiO₂ nano composite / catalyst / pollution / hydrophobicity

引用本文

引用格式 ▾

还原氧化石墨烯@TiO₂纳米复合材料的制备及光催化性能研究[J]. 化工新型材料, 2020, 48(6): 242-246 DOI:

登录浏览全文

4963

注册一个新账户忘记密码

参考文献

原文顺序 | 出版日期 | 本文引用

[1] Piola R F,Dafforn K A,Johnston E L.The influence of antifouling practices on marine invasions[J].Biofouling,2009,25(7):633-644.
[2] Maréchal J P,Hellio C.Challenges for the development of new non-toxic antifouling solutions[J].International Journal of Molecular Sciences,2009,10(11):4623-4637.
[3] Schultz M P,Bendick J A,Holm E R,et al.Economic impact of biofouling on a naval surface ship[J].Biofouling,2011,27(1):87-98.
[4] Schultz M P.Effects of coating roughness and biofouling on ship resistance and powering[J].Biofouling,2007,23(5):331-341.
[5] Yebra D M,Kiil S,Dam-Johansen K.Antifouling technology-past,present and future steps towards efficient and environmentally friendly antifouling coatings[J].Progress in Organic Coatings,2004,50(2):75-104.
[6] Dafforn K A,Lewis J A,Johnston E L.Antifouling strategies:history and regulation,ecological impacts and mitigation[J].Marine Pollution Bulletin,2011,62(3):453-465.
[7] Young G H,Seagren G W,Zehner J C.Antifouling paints[J].Industrial & Engineering Chemistry Research,1945,37(5):461-464.
[8] Young G H,Peter G,Pittsburgh,antifouling paint:US2287218[P].1942-6-23.
[9] Freiman A.Coating composition:US3845005[P].1974-10-29.
[10] Evans S M,Leksono T,Mckinnell P D.Tributyltin pollution:a diminishing problem following legislation limiting the use of TBT-based anti-fouling paints[J].Marine Pollution Bulletin,1995,30(1):14-21.
[11] Karen W.Skin clean dolphins[J].Smart Materials Bulletin,2002,2002(12):7.
[12] Efimenko K,Finlay J,Callow M E,et al.Development and testing of hierarchically wrinkled coatings for marine antifouling[J].ACS Applied Materials & Interfaces,2009,1(5):1031-1040.
[13] Pang H,Gao F,Lu Q.Morphology effect on antibacterial activity of cuprous oxide[J].Chemical Communications,2009,9(9):1076-1078.
[14] Hu W,Yin J,Deng B,et al.Application of nano TiO₂ modified hollow fiber membranes in algal membrane bioreactors for high-density algae cultivation and wastewater polishing[J].Bioresource Technology,2015,193:135-141.
[15] Chow K L,Yu B M,Jin S Z,et al.Characterizing the optimal operation of photocatalytic degradation of BDE-209 by nano-sized TiO₂[J].Journal of Environmental Sciences,2012,24(9):1670-1678.
[16] Yamada N,Suzumura M,Koiwa F,et al.Differences in elimination efficiencies of Escherichia coli in freshwater and seawater as a result of TiO₂ photocatalysis[J].Water Research,2013,47(8):2770-2776.
[17] Chen S,Yeoh W,Liu Q,et al.Chemical-free synthesis of grapheme-carbon nanotube hybrid materials for reversible lithium storage in lithium-ion batteries[J].Carbon,2012,50(12):4557-4565.
[18] Yu G,Hu L,Liu N,et al.Enhancing the supercapacitor performance of graphene/MnO₂ nanostructured electrodes by conductive wrapping[J].Nano Letters,2011,11(10):4438-4442.
[19] Geim A K.Graphene:status and prospects[J].Science,2009,324(5934):1530-1534.
[20] Peining Z,Nair A S,Shengjie P,et al.Facile fabrication of TiO₂-graphene composite with enhanced photovoltaic and photocatalytic properties by electrospinning[J].ACS Applied Materials & Interfaces,2012,4(2):581-585.
[21] Jiang B,Tian C,Zhou W,et al.In situ growth of TiO₂ in interlayers of expanded graphite for the fabrication of TiO₂-graphene with enhanced photocatalytic activity[J].Chemistry-A European Journal,2011,17(30):8379-8387.
[22] Chang K,Chen W.L-cysteine-assisted synthesis of layered MoS₂/graphene composites with excellent electrochemical performances for lithium ion batteries[J].ACS Nano,2011,5(6):4720-4728.
[23] Huang J,Fu K,Deng X,et al.Fabrication of TiO₂ nanosheet aarrays/graphene/Cu₂O composite structure for enhanced photocatalytic activities[J].Nanoscale Research Letters,2017,12(1):310.
[24] Dubale A,Su W N,Tamirat A,et al.The synergetic effect of graphene on Cu₂O nanowire arrays as a highly efficient hydrogen evolution photocathode in water splitting[J].Journal of Materials Chemistry A,2014,2(43):18383-18397.
[25] Xiang D,Huang Z H,Shen W C,et al.Preparation and electrochemical performance of a CuO/graphene composite[J].New Carbon Materials,2013,28(3):172-177.
[26] Marcano D C,Kosynkin D V,Berlin J M,et al.Improved synthesis of graphene oxide[J].ACS Nano,2010,4(8):4806-4814.
[27] Wang Z,Luan D,Li C M,et al.Engineering nonspherical hollow structures with complex interiors by template-engaged redox etching[J].Journal of the American Chemical Society,2010,132(45):16271-16277.
[28] Li N,Xiao Y,Hu C,et al.Microwave-assisted synthesis of dual-conducting Cu₂O@Cu-graphene system with improved electrochemical performance as anode material for lithium batteries[J].Chemistry-an Asian Journal,2013,8(9):1960-1965.
[29] Yang L,Li Z,Jiang H,et al.Photoelectrocatalytic oxidation of bisphenol A over mesh of TiO₂/graphene/Cu₂O[J].Applied Catalysis B Environmental,2016,183:75-85.
[30] Sun S,Meng G,Zhang G,et al.Controlled growth and optical properties of one-dimensional ZnO nanostructures on SnO₂ nanobelts[J].Crystal growth & design,2007,7(10):1988-1991.
[31] Liu G,Zhao Y,Sun C,et al.Synergistic effects of B/N doping on the visible-light photocatalytic activity of mesoporous TiO₂[J].Angewandte Chemie,2008,47(24):4516-4520.