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采用一锅水热法在180 ℃ 下制备三维Eu3+-石墨烯自组装复合材料. 通过X射线衍射、 扫描电子显微镜、透射电子显微镜表征了合成样品的物相及形貌特征. 结果表明: 合成的样品具有多孔性结构, 层与层之间堆叠成三维结构, 并且结果显示产物中没有Eu3+的团聚体. 经过拉曼光谱, 傅里叶红外光谱分析表明, Eu3+通过含氧官能团与石墨烯复合. 通过振动样品磁强计测定样品的磁滞回线, 对其磁学性能进行研究, 剥离顺磁信号后, 测得相应的矫顽力Hc ≈ 39.61 Oe(1 Oe=79.5775 A/m), 饱和磁化强度Ms ≈ 0.08 emu/g, 发现该产物具有弱的铁磁性, 与石墨烯相比, Eu3+的加入使得产物的铁磁性有较大提高.The three-dimensional self-assembly Eu3+-graphene composite materials are synthesized through a one-pot hydrothermal reaction under 180 ℃. The obtained samples are analyzed through powder X-ray diffraction, scanning electron microscope, and transmission electron microscopy. The results show that each sample has porous structure and no independent Eu3+ agglomerates. Raman spectrum and Fourier transform infrared spectrum analyses indicate Eu3+ is well complexed with graphene through oxygen-containing groups. The magnetic properties are measured using vibrating sample magnetometer. The magnetic hysteresis loop shows the corresponding coercivity Hc ≈ 39.61 Oe (1 Oe=79.5775 A/m) and the magnetization saturation Ms ≈ 0.08 emu/g that indicates that the sample presents weak ferromagnetism and good soft magnetic properties compared with graphene.
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Keywords:
- three-dimensional graphene /
- Eu3+ /
- hydrothermal method /
- magnetic properties
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[1] Novoselov K S, Geim A K, Morozov S V, Jiang D, Zhang Y, Duobonos S V, Grigorieva I V, Firsov A A 2004 Science 306 666
[2] Kang C Y, Tang J, Li L M, Yan W S, Xu P S, Wei S Q 2012 Acta Phys. Sin. 61 037302 (in Chinese) [康朝阳, 唐军, 李利民, 闫文盛, 徐鹏寿, 韦世强 2012 61 037302]
[3] Geim A K, Novoselov K S 2007 Nat. Mater. 6 183
[4] Li C, Shi G Q 2012 Nanoscale 4 5549
[5] Xu Y X, Shi G Q 2011 J. Mater. Chem. 21 3311
[6] Nardecchia S, Carriazo D, Ferrer M L, del Monte F 2013 Chem. Soc. Rev. 42 802
[7] Tang C, Ji L, Meng L J, Sun L Z, Zhang K W, Zhong J X 2009 Acta Phys. Sin. 58 7815 (in Chinese) [唐超, 吉璐, 孟利军, 孙立忠, 张凯旺, 钟建新 2009 58 7815]
[8] Kang C Y, Tang J, Li L M, Pan H B, Yan W S, Xu P S, Wei S Q, Chen X F, Xu X Z 2011 Acta Phys. Sin. 60 047302 (in Chinese) [康朝阳, 唐军, 李利民, 潘海斌, 闫文盛, 徐彭寿, 韦世强, 陈秀芳, 徐仙则 2011 60 047302]
[9] Di C A, Wei D C, Yu G, Liu Y Q, Guo Y L, Zhu D B 2008 Adv. Mater. 20 3289
[10] Stankovich S, Dikin D A, Dommett G H B, Kohlhaas K M, Zimney E J, Stach E A, Piner R D, Nguyen S T, Ruoff R S 2006 Nature 442 282
[11] Xu Y X, Sheng K X, Li C, Shi G Q 2010 ACS Nano 4 4324
[12] Jiang X, Ma Y W, Li J J, Fan Q L, Huang W 2010 J. Phys. Chem. C 114 22462
[13] Zhou D, Cui Y, Han B H 2010 Angrew. Chem. 49 4603
[14] Zhou Y, Bao Q, Tang L L, Zhong Y, Loh K P 2009 Chem. Mater. 21 2950
[15] L W, Tao Y, Ni W, Zhou Z, Su F Y, Chen X C, Jin F M, Yang Q H 2011 J. Mater. Chem. 21 12352
[16] Huang Y G, Jiang F L, Hong M C 2009 Chem. Rev. 253 2814
[17] Guo Y N, Xu G F, Guo Y, Tang J 2011 Dalton Trans. 40 9953
[18] Chandrasekhar V, Murugesapandian B 2009 Acc. Chem. Res. 42 1047
[19] Sorace L, Benelli C, Gatteschi D 2011 Chem. Soc. Rev. 40 3092
[20] Cui Y, Yue Y, Qian G, Chen B 2012 Chem. Rev. 112 1126
[21] Yoon M, Srirambalaji R, Kim K 2012 Chem. Rev. 112 1196
[22] Suh M P, Park H J, Prasad T K, Lim D W 2012 Chem. Rev. 112 782
[23] Sumida K, Rogow D L, Mason J A, McDonald T M, Bloch E D, Herm Z R, Bae T H, Long J R 2012 Chem. Rev. 112 724
[24] Getman R B, Bae Y S, Wilmer C E, Snurr R H 2012 Chem. Rev. 112 703
[25] Gupta B K, Thanikaivelan P, Narayanan T N 2011 Nano Lett. 11 5227
[26] Mo Z L 2012 Mater. Manufact. Proc. 27 494
[27] Bhowmick S, Shenoy V B 2008 Chem. Phys. 128 244717
[28] Feng M, Zhan H B, Chen Y 2010 Appl. Phys. Lett. 96 033107
[29] Chen D M 2010 Acta Phys. Sin. 59 6399 (in Chinese) [陈东猛 2010 59 6399]
[30] Novoselov K S, Geim A K, Morozov S V, Jiang D, Katsnelson M I, Grigorieva I V, Dubonos S V, Firsov A A 2005 Nature 438 197
[31] Yang H P, Zhang D S, Shi L Y, Fang J H 2008 Acta Mater. 56 955
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