利用简便快捷的微波固相剥离法将氧化石墨烯(Graphene oxide,GO)剥离成石墨烯(Microwave reduced graphene oxide,MRGO),并将得到的石墨烯通过超声分散于不同的基液中.采用X射线衍射(XRD)、傅立叶变换红外光谱(FTIR)、拉曼光谱(Raman)、透射电镜(TEM)和紫外-可见光谱(UV-vis)对制备的样品进行了表征,发现通过这种方法可以使氧化石墨烯上的大部分含氧官能团得到去除.采用UV-vis,Zeta电位和沉淀物照片捕捉研究了pH值、超声时间和基液对石墨烯纳米流体稳定性的影响,发现经超声粉碎30 min的石墨烯纳米流体能够保持均匀稳定达到一个月.此外,还分析了不同质量分数石墨烯-H2O纳米流体在不同温度下的导热系数,结果表明:石墨烯-H2O纳米流体的导热系数随着温度的升高和浓度的增大而提高,60℃时,质量分数为0.1％的石墨烯-H2O纳米流体的导热系数相对于基液提高了64％.
参考文献
| [1] | Visinee Trisaksri;Somchai Wongwises .Critical review of heat transfer characteristics of nanofluids[J].Renewable & sustainable energy reviews,2007(3):512-523. |
| [2] | Choi S.Enhancing thermal conductivity of fluids with nanoparticles[A].New York,1995:99-105. |
| [3] | S.S. Mallick;A. Mishra;L.Kundan.An investigation into modelling thermal conductivity for alumina-water nanofluids[J].Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems,2013:234-244. |
| [4] | Min-Sheng Liu;Mark Ching-Cheng Lin;C.Y. Tsai;Chi-Chuan Wang .Enhancement of thermal conductivity with Cu for nanofluids using chemical reduction method[J].International Journal of Heat and Mass Transfer,2006(17/18):3028-3033. |
| [5] | 彭小飞,俞小莉,夏立峰,罗爱娇.Al2O3纳米粉体悬浮液热物性实验研究[J].材料科学与工程学报,2007(01):52-54. |
| [6] | 林海斌,张国贤,谢飞.分散剂PEG600对γ-Al2O3纳米流体分散性的影响[J].材料科学与工程学报,2010(03):366-369. |
| [7] | M. Chopkar;S. Kumar;D.R. Bhandari;P.K. Das;I. Manna .Development and characterization of Al_2Cu and Ag_2Al nanoparticle dispersed water and ethylene glycol based nanofluid[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2007(2/3):141-148. |
| [8] | Chen, L.;Xie, H.;Yu, W.;Li, Y. .Rheological behaviors of nanofluids containing multi-walled carbon nanotube[J].Journal of Dispersion Science and Technology,2011(4/6):550-554. |
| [9] | B. Munkhbayar;Md.Riyad Tanshen;Jinseong Jeoun .Surfactant-free dispersion of silver nanoparticles into MWCNT-aqueous nanofluids prepared by one-step technique and their thermal characteristics[J].CERAMICS INTERNATIONAL,2013(6):6415-6425. |
| [10] | Meyer J C;Geim A K;Katsnelson M I et al.The structure of suspended graphene sheets[J].NATURE,2007,446(7131):60-63. |
| [11] | Li D;Muller MB;Gilje S;Kaner RB;Wallace GG .Processable aqueous dispersions of graphene nanosheets[J].Nature nanotechnology,2008(2):101-105. |
| [12] | Compton, OC;Nguyen, ST .Graphene Oxide, Highly Reduced Graphene Oxide, and Graphene: Versatile Building Blocks for Carbon-Based Materials[J].Small,2010(6):711-723. |
| [13] | Novoselv K S;Geim A K;Morozov S V et al.Electric field effect in atomically thin carbon films[J].SCIENCE,2004,306(5696):666-669. |
| [14] | 葛雯,吕斌.Cu箔衬底上石墨烯纳米结构制备[J].材料科学与工程学报,2013(04):489-494. |
| [15] | P. Manivel;S. Ramakrishnan;Nikhil K. Kothurkar;N. Ponpandian;D. Mangalaraj;C. Viswanathan .Graphene nanosheets by low-temperature thermal reduction of graphene oxide using RF-CVD[J].Journal of Experimental Nanoscience,2013(1/8):311-319. |
| [16] | Pan Y;Zhang H G;Shi D X et al.Highly ordered,millimeter scale,continuous,single-crystalline graphene on Ru,(001)[J].Advanced Materials,2009,21:2777-2781. |
| [17] | Yuxi Xu;Kaixuan Sheng;Chun Li .Highly conductive chemically converted graphene prepared from mildly oxidized graphene oxide[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2011(20):7376-7380. |
| [18] | 张泰然,孙陆威,何海平,叶志镇.化学法制备水溶性良好的石墨烯及其荧光淬灭应用[J].材料科学与工程学报,2013(04):484-488. |
| [19] | Jianchuan Wang;Tiannan Zhou;Hua Deng;Feng Chen;Ke Wang;Qin Zhang;Qiang Fu.An environmentally friendly and fast approach to prepare reduced graphite oxide with water and organic solvents solubility[J].Colloids and Surfaces, B. Biointerfaces,2013:171-176. |
| [20] | Han Hu;Zongbin Zhao;Quan Zhou .The role of microwave absorption on formation of graphene from graphite oxide[J].Carbon: An International Journal Sponsored by the American Carbon Society,2012(9):3267-3273. |
| [21] | Tapas Kuila;Saswata Bose;Partha Khanra .A green approach for the reduction of graphene oxide by wild carrot root[J].Carbon: An International Journal Sponsored by the American Carbon Society,2012(3):914-921. |
| [22] | HONGJUAN SUN;YONGHUI YANG;QIAO HUANG.Preparation and Structural Variation of Graphite Oxide and Graphene Oxide[J].Integrated Ferroelectrics,2011:163-170. |
| [23] | Wufeng Chen;Lifeng Yan;Prakriti R. Bangal .Preparation of graphene by the rapid and mild thermal reduction of graphene oxide induced by microwaves[J].Carbon: An International Journal Sponsored by the American Carbon Society,2010(4):1146-1152. |
| [24] | Park S;Bak H M S;Kim K H et al.Solid-state microwave irradiation synthesis of high quality grapheme nanosheets under hydrogen containing atmosphere[J].MATERIALS CHEMISTRY,2011,21(03):680-686. |
| [25] | 杨勇辉,孙红娟,彭同江,黄桥.石墨烯薄膜的制备和结构表征[J].物理化学学报,2011(03):736-742. |
| [26] | Ma W S;Yang F;Shi J J et al.Silicone based nanofluids containing functionalized graphene nanosheets Colloids[J].Surf A Physicochem Eng Asp,2013,431:120-126. |
| [27] | Li XF;Zhu DS;Wang XJ;Wang N;Gao JW;Li H .Thermal conductivity enhancement dependent pH and chemical surfactant for Cu-H2O nanofluids[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2008(1/2):98-103. |
| [28] | A. Ghadimi;R. Saidur;H. S. C. Metselaar .A review of nanofluid stability properties and characterization in stationary conditions[J].International Journal of Heat and Mass Transfer,2011(17/18):4051-4068. |
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