Controllable Synthesis and Electrical Conductivities of Cu7Te4 Nanostructures

doi:10.3724/SP.J.1077.2012.00433

Abstract

Abstract:

Cu₇Te₄ nanomaterials with different morphologies including nanobelts with the thickness of 200 nm and the length of several microns, nanoparticles with the diameter of 10-25 nm and micro-flakes consisting of nano p-ar--ticles with the size of about 10 nm were successfully synthesized using different organic solvents (N,N-Dipropyl-am-ine, acetone and cyclohexanone) by a solvothermal process. X-ray powder diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and high-resolution transmission electron microscope (HRTEM) were employed to characterize the as-obtained products. Furthermore, the electrical conductivities of the samples were studied between room temperature and 400℃. The results reveal that the electrical conductivity of Cu₇Te₄ nanobelts is much higher than that of the other two samples with different morphologies. The possible mechanism and the influence of various solvents on the morphology of products are also discussed.

Key words: Cu₇Te₄, nanostructures, electrical conductivities, reaction mechanism

CLC Number:

O613

SHI Xiao-Rui, WANG Qun, LV Ling-Yuan, LI Yang, YU Xiao, CHEN Gang. Controllable Synthesis and Electrical Conductivities of Cu₇Te₄ Nanostructures[J]. Journal of Inorganic Materials, 2012, 27(4): 433-438.

Figures/Tables 6

Fig. 1 XRD patterns of the samples synthesized in different solvents

Fig. 2 (a,b) SEM images of Cu7Te4 nanobelts, (c) TEM images and (d) typical HRTEM image of Cu7Te4 nanobelts using N,N-Dipropylamine as organic solvent the corresponding Cu7Te4 specimen

Fig. 3 (a, b) FESEM images, (c, d) TEM images of Cu7Te4 nanoparticles using acetone as organic solvent, and (e, f) typical HRTEM images taken from circle zoneⅠand zoneⅡin Fig. 3(d)

Fig. 4 (a) FESEM image of Cu7Te4 micro-flakes using cyclohexanone as organic solvent, (b) TEM image of an individual Cu7Te4 nanostructure, and (c, d) HRTEM images of the as-synthesized Cu7Te4 micro-flakes

Fig. 5 Electrical conductivity for different morphologies of pure Cu7Te4 samples

Fig. 6 Schematic illustration of the proposed growth prosesses of different Cu7Te4 structures

References 25

[1]	CHEN Li-Dong, XIONG Zhen, BAI Sheng-Qiang. Recent progress of thermoelectric nano-composites. Journal of Inorganic Materials, 2010, 25(6): 561-568.
[2]	Dresselhaus M S, Chen G, Tang M Y, et al. New directions for low-dimensional thermoelectric materials. Adv. Mater., 2007, 19(8): 1043-1053.
[3]	Martin J, Nolas G S, Zhang W, et al. PbTe nanocomposites synthesized from PbTe nanocrystals. Appl. Phys. Lett., 2007, 90(22): 22211.
[4]	Venkatasubramanian R, Siivola E, Colpitts T, et al. Thin-film thermoelectric devices with high room-temperature figures of merit. Nature, 2001, 413(6856): 597-602.
[5]	Zhao X B, Ji X H, Zhang Y H, et al. Bismuth telluride nanotubes and the effects on the thermoelectric properties of nanotube-containing nanocomposites. Appl. Phys. Lett. , 2005, 86(6): 062111-1-3.
[6]	Shi W D, Yu J B, Wang H S, et al. Hydrothermal synthesis of single-crystalline antimony telluride nanobelts. J. Am. Chem. Soc., 2006, 128(51): 16490-16491.
[7]	XU Xiao-Chuan, WANG Chun-Fen, YAO Qin, et al. Peparation of Bi2Te3-polyaniline heterostructured nanorods by two-step electrochemical depositions. Journal of Inorganic Materials, 2006, 21(6): 1482-1486.
[8]	Liufu S C, Chen L D, Yao Q, et al. In situ assembly of CuxS quantum-dots into thin film: a highly conductive p-type transparent film,J. Phys. Chem. C, 2008, 112(32): 12085-12088.
[9]	Wang L, Chen G, Wang Q, et al. Shape-controlled synthesis and electrical conductivities of AgPb10SbTe12 materials. J. Phys. Chem. C, 2010, 114(13): 5827-5834.
[10]	Jin R C, Chen G, Wang Q, et al. PbTe hierarchical nanostructures: solvothermal synthesis, growth mechanism and their electrical conductivities. Cryst. Eng. Comm., 2011, 13(6): 2106-2113.
[11]	Sridhar K, Chattopadhyay K. Synthesis by mechanical alloying and thermoelectric properties of Cu2Te. J. Alloys Compd., 1998, 264(1/2): 293-298.
[12]	Wu X, Zhou J, Duda A. Phase control of CuxTe film and its effects on CdS/CdTe solar cell. Thin Solid Films, 2007, 515(15): 5798-5803.
[13]	Zhou J, Wu X, Duda A, et al. The formation of different phases of CuxTe and their effects on CdTe/CdS solar cells. Thin Solid Films, 2007, 515(18): 7364-7369.
[14]	Li B, Xie Y, Huang J X, et al. Sonochemical synthesis of nanocrystalline copper tellurides Cu7Te4 and Cu4Te3 at room temperature. Chem. Mater., 2000, 12(9): 2614-2616.
[15]	Jiang L, Zhu Y J, Cui J B. Nanostructures of metal tellurides (PbTe, CdTe, CoTe2, Bi2Te3, and Cu7Te4) with various morphologies: a general solvothermal synthesis and optical properties. Eur. J. Inorg. Chem. , 2010, 2010(19): 3005-3011.
[16]	Wang Q, Li G D, Liu Y L, et al. Fabrication and growth mechanism of selenium and tellurium nanobelts through a vacuum vapor deposition route. J. Phys. Chem. C, 2007, 111(35): 12926-12932.
[17]	Zhang Q, Liu S J, Yu S H. Recent advances in oriented attachment growth and synthesis of functional materials: concept, evidence, mechanism, and future. J. Mater. Chem., 2009, 19(2): 191-207.
[18]	Seoudi R, Shabaka A A, Elokr M M, et al. Optical properties and electrical conductivity studies of copper selenide nanoparticle. Mater. Lett., 2007, 61(16): 3451-3455.
[19]	Martin J, Nolas G S, Zhang W, et al. PbTe nanocomposites synthesized from PbTe nanocrystals. Appl. Phys. Lett. , 2007, 90(22): 222112-1-3.
[20]	Shi W D, Zhou L, Song S Y, et al. Hydrothermal synthesis and thermoelectric transport properties of impurity-free antimony telluride hexagonal nanoplates. Adv. Mater., 2008, 20(10): 1892-1897.
[21]	Xiao F, Chen G, Wang Q, et al. Simple synthesis of ultra-long Ag2Te nanowires through solvothermal co-reduction method. J. Solid State Chem., 2010, 183(10): 2382-2388.
[22]	黄永明, 水合肼提纯的机理分析. 天然气化工2008, 33(6): 47-49.
[23]	Xu J, Xue D. Fabrication of copper hydroxyphosphate with complex architectures. J. Phys. Chem. B, 2006, 110(15): 7750-7756.
[24]	Zhong Z Y, Lin M, Ng V, et al. A versatile wet-chemical method for synthesis of one-dimensional ferric and other transition metal oxides. Chem. Mater., 2006, 18(25): 6031-6036.
[25]	Zhong Z Y, Ng V, Luo J Z, et al. Manipulating the self-assembling process to obtain control over the morphologies of copper oxide in hydrothermal synthesis and creating pores in the oxide architecture. Langmuir, 2007, 23(11): 5971-5977.

Controllable Synthesis and Electrical Conductivities of Cu₇Te₄ Nanostructures

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 6

References 25

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	ZHANG Ruiyang, WANG Yi, OU Bowen, ZHOU Ying. α-Ni(OH)₂ Surface Hydroxyls Synergize Ni³⁺ Sites for Catalytic Formaldehyde Oxidation [J]. Journal of Inorganic Materials, 2023, 38(10): 1216-1222.
[2]	GAO Wa, XIONG Yujie, WU Congping, ZHOU Yong, ZOU Zhigang. Recent Progress on Photocatalytic CO₂ Reduction with Ultrathin Nanostructures [J]. Journal of Inorganic Materials, 2022, 37(1): 3-14.
[3]	ZHENG Yanning, JI Junrong, LIANG Xueling, LAI Zhengjie, CHENG Qifan, LIAO Dankui. Performance of Nitrogen-doped Hollow Carbon Spheres as Oxidase Mimic [J]. Journal of Inorganic Materials, 2021, 36(5): 527-534.
[4]	XU Yun-Qing,WANG Hai-Zeng. Sodium Magnesium Fluoride Particles of Different Morphologies: Prepared by EDTA-assisted Hydrothermal Method [J]. Journal of Inorganic Materials, 2019, 34(9): 933-937.
[5]	WANG Dan-Jun, WANG Chan, ZHAO Qiang, GUO Li, YANG Xiao, WU Jiao, FU Feng. Au Nanoparticles (NPs) Surface Plasmon Resonance Enhanced Photocatalytic Activities of Au/Bi₂WO₆ Heterogeneous Nanostructures [J]. Journal of Inorganic Materials, 2018, 33(6): 659-666.
[6]	LIU Xue-Jiao, HE Zhen-Yu, WU Hao, LUO Ting, MENG Xie, CHEN Chu-Sheng, ZHAN Zhong-Liang. Influence of Impregnated Nano-scale LaNi_0.6Fe_0.4O_3-_δ Particles on the Oxygen Permeation Performance of Zr_0.84Y_0.16O_2-_δ-La_0.8Sr_0.2Cr_0.5Fe_0.5O_3-_δ Composite Membranes [J]. Journal of Inorganic Materials, 2018, 33(1): 14-18.
[7]	TAN Man-Lin, MA Dong-Cao, FU Dong-Ju, MA Qing, LI Dong-Shuang, WANG Xiao-Wei, ZHANG Wei-Li, CHEN Jian-Jun, ZHANG Hua-Yu. Properties of Silver Nanostructures Incorporated Perovskite Based Thin Films for Solar Cell Applications [J]. Journal of Inorganic Materials, 2016, 31(9): 908-914.
[8]	YU Yin-Hu, WANG Tao, LIAO Qiu-Ping, MIAO Run-Jie, PAN Jian-Feng, ZHANG Du-Bao. Low-temperature Solid-state Synthesis of Nanometer TiB₂-TiC Composite Powder [J]. Journal of Inorganic Materials, 2016, 31(3): 324-328.
[9]	WANG Ya-Peng, LIU Jia-Jia, LIU Chun-Xiao, CHEN Wei-Wei, LI Ting-Ting, GUO Hong. Morphology-controlled Synthesis of Hollow Core-shell Structural α-MoO₃-SnO₂ with Superior Lithium Storage [J]. Journal of Inorganic Materials, 2015, 30(9): 919-924.
[10]	YU Yin-Hu, WANG Tao, ZHANG Hong-Min, ZHANG Du-Bao, PAN Jian-Feng. Low Temperature Combustion Synthesis of TiC Powder Induced by PTFE [J]. Journal of Inorganic Materials, 2015, 30(3): 272-276.
[11]	DOU Zhi-He, ZHANG Ting-An, WEN Ming, SHI Guan-Yong, HE Ji-Cheng. Preparation of Ultra-fine NdB₆ Powders by Combustion Synthesis and Its Reaction Mechanism [J]. Journal of Inorganic Materials, 2014, 29(7): 711-716.
[12]	GUO Xiang-Xin, HUANG Shi-Ting, ZHAO Ning, CUI Zhong-Hui, FAN Wu-Gang, LI Chi-Lin, LI Hong. Rapid Development and Critical Issues of Secondary Lithium-air Batteries [J]. Journal of Inorganic Materials, 2014, 29(2): 113-123.
[13]	MU Yun-Chao, LIANG Bao-Yan, GUO Ji-Feng. Reaction Mechanism of Ti₃SiC₂ Formed on the Diamond [J]. Journal of Inorganic Materials, 2012, 27(10): 1099-1104.
[14]	ZHANG Wen, HE Yong-Ning, ZHOU Cheng-Bo, CUI Wu-Yuan. Controlled Growth of Zinc Oxide Nano Structures by Electrochemical Synthesis and Their Photoluminescence Properties [J]. Journal of Inorganic Materials, 2011, 26(6): 602-606.
[15]	XU Xiu-Hua,XIAO Han-Ning,GUO Wen-Ming,GAO Peng-Zhao,PENG Su-Hua. Preparation and Reaction Mechanism of LaB₆ Powder by Solid-state Reaction at Atmospheric Pressure [J]. Journal of Inorganic Materials, 2011, 26(4): 417-421.