水热法制备MoS2纳米花电极及其电化学性能
Hydrothermal Synthesis and Electrochemical Performance of Flower-like MoS2 Nanoparticles
摘 要
以三氧化钼和硫氰酸铵为起始原料, 采用温和的水热法制备了MoS2纳米花。考察了反应温度(160~200 ℃)和反应时间(12~48 h)对MoS2纳米花电极化学性能的影响。利用X射线衍射(XRD)、透射电子显微镜(TEM)、扫描电子显微镜(SEM)和N2吸附-脱附曲线(BET)对样品的晶型、形貌、组分和比表面积进行了表征。结果表明, 所制备的样品呈现出了花瓣状的片层结构, 并有序堆垛成花状纳米球, 且具有较大的比表面积(23.13 m2·g-1)。循环伏安测试表明, MoS2电极的催化活性优于铂电极。光电化学性能测试表明, 基于MoS2对电极的染料敏化太阳能电池(DSSCs)的光电转换效率(2.44%)高于铂电极(2.33%), 有望在染料敏化太阳能电池(DSSCs)电极材料方面得到应用。
水热法
电化学
循环伏安
光电转化
MoS2 nanoflower
hydrothermal method
electrochemistry
C-V
photoelectric conversion
Abstract
Flower-like MoS2 nanoparticles were synthesized via a mild hydrothermal method using molybdenum trioxide and ammonium thiocyanate as the starting materials. The influence of reaction temperature and reaction time on the electrochemical performance of flowerlike MoS2 was investigated. The crystalline structure, morphology, components and surface areas of the as-prepared samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET), respectively. The as-prepared samples presented flower-like nanoparticles composed of multiple ordered petal-shaped layer stacking structure with high BET surface areas. The cyclic voltammetry (C-V) results indicated that the electrochemical catalytic activity of MoS2 was superior to that of Pt. The dye-sensitized solar cells (DSSCs) based on MoS2 exhibited higher energy conversion efficiency(2.44%)than that of Pt (2.33%), indicating the potential application of the former to solar cells.
中图分类号 TB383 O646 DOI 10.11973/fsyfh-201510006
所属栏目 试验研究
基金项目 上海市教育委员会科研创新项目(15ZZ092); 上海市青年教师培养资助计划项目(ZZgcd14010); 上海工程技术大学科研启动项目(2014-22); 2013年上海市市级大学生创新训练项目(cs1305007); 2014年国家级大学生创新训练项目(201410856010)
收稿日期 2014/10/13
修改稿日期
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备注孙明轩(1983-), 博士, 讲师/硕导,
引用该论文: LI Wei-bin,SUN Ming-xuan,LI Fang,HE Jia,ZHANG Qiang,SHI Yu-ying. Hydrothermal Synthesis and Electrochemical Performance of Flower-like MoS2 Nanoparticles[J]. Corrosion & Protection, 2015, 36(10): 929
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【2】BALENDHRAN S, OU J Z, BHASKARAN M, et al. Atomically thin layers of MoS2 via a two step thermal evaporation-exfoliation method[J]. Nanoscale, 2012(4): 461-466.
【3】CHHOWALLA M, SHIN H S, EDA G, et al. The chemistry of two-dimensional layered transition metal dichalcogenide nanosheets[J]. Nature Chemistry, 2013(5): 263-275.
【4】WANG Q H, KALANTAR-ZADEH K, KIS A, et al. Electronics and optoelectronics of two-dimensional transition metal dichalcogenides[J]. Nature Nanotechnology, 2012(7): 699-712.
【5】ZONG X, WU G P, YAN H J, et al. Photocatalytic H2 evolution on MoS2/CdS catalysts under visible light irradiation[J]. Journal of Physical Chemistry C, 2010, 114: 1963-1968.
【6】YUE G T, LIN J Y, TAI S Y, et al. A catalytic composite film of MoS2/graphene flake as a counter electrode for Pt-free dye-sensitized solar cells[J]. Electrochimica Acta, 2012, 85: 162-168.
【7】CHHOWALLA M, AMARATUNGA G. Thin films of fullerene-like MoS2 nanoparticles with ultra-low friction and wear[J]. Nature, 2000, 407: 164-167.
【8】刘冰, 李峻青, 刘海燕, 等. 金属表面二硫化钼处理技术的研究进展[J]. 表面技术, 2006, 35: 8-10.
【9】文斯雄. 钼化合物在表面处理中的应用[J]. 腐蚀与防护, 2000, 21(1): 40-42.
【10】HUANG X, ZENG Z Y, ZHANG H. Metal dichalcogenide nanosheets: Preparation, properties and applications[J]. Chemical Society Reviews, 2013, 42: 1934-1936.
【11】LIN H T, CHEN X Y, LIH L, et al. Hydrothermal synthesis and characterization of MoS2 nanorods[J]. Materials Letters, 2010, 64: 1748-1750.
【12】COLEMAN J N, LOTYA M, O′NEILL A. et al. Two-dimensional nanosheets produced by liquid exfoliation of layered materials[J]. Science, 2011, 331: 568-571.
【13】LEE Y H, ZHANG X Q, ZHANG W J, et al. Synthesis of large-area MoS2 atomic layers with chemical vapor deposition[J]. Advanced Materials, 2012, 24: 2320-2325.
【14】LIN H T, CHEN X Y, LI H L, et al. Hydrothermal synthesis and characterization of MoS2 nanorods[J]. Materials Letters, 2010, 64: 1748-1750.
【15】LUO H, XU C, ZOU D B, et al. Hydrothermal synthesis of hollow MoS2 microspheres in ionic liquids/water binary emulsions[J]. Materials Letters, 2008, 62: 3558-3560.
【16】LI W J, SHI E W, KO J M, et al. Hydrothermal synthesis of MoS2 nano-wires[J]. Journal of Crystal Growth, 2003, 250: 418-422.
【17】HUANG K C, WANG Y C, DONG R X, et al. A high performance dye-sensitized solar cell with a novel nanocomposite film of PtNP/MWCNT on the counter electrode[J]. Journal of Materials Chemistry, 2010, 20: 4067-4073.
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【22】SUN H C, LUO Y H, ZHANG Y D, et al. In situ preparation of a flexible polyaniline/carbon composite counter electrode and its application in dye-sensitized solar cells[J]. Journal of Physical Chemistry C, 2010, 114: 11673-11679.
【23】AMEEN S, AKHTAR M S, KIM Y S, et al. Sulfamic acid-doped polyaniline nanofibers thin film-based counter electrode: Application in dye-sensitized solar cells[J]. Journal of Physical Chemistry C, 2010, 114: 4760-4764.
【24】YUE G T, LIN J Y, TAI S Y, et al. A catalytic composite film of MoS2/graphene flake as a counter electrode for Pt-free dye-sensitized solar cells[J]. Electrochimica Acta, 2012, 85: 162-168.
【25】CHANG K, CHEN W X. In situ synthesis of MoS2/graphene nanosheet composites with extraordinarily high electrochemical performance for lithium ion batteries[J]. Chemical Communications, 2011, 47: 4252-4254.
【26】WU Z Z, WANG D Z, WANG Y, et al. Preparation and tribological properties of MoS2 nanosheets[J]. Advanced Engineering Materials, 2010(12): 534-538.
【27】RAMANRISHNA M H S S, GOMATHI A, MANNA A K, et al. MoS2 and WS2 analogues of graphene[J]. Angewandte Chemie-International Edition, 2010, 49: 4059-4062.
【28】CIZAIRE L, VACHER B, MOGNE T L, et al. Mechanism of ultra-low friction by hollow inorganic fullerene-like MoS2 nanoparticles[J]. Surface and Coatings Technology, 2002, 160: 282-287.
【29】ZHAO B, HUANG H, JIANG P, et al. Flexible counter electrodes based on mesoporous carbon aerogel for high-performance dye-sensitized solar cells[J]. The Journal of Physical Chemistry C, 2011, 115: 22615-22621.
【30】BAJPAI T, ROY S, KULSHRESTHA N, et al. Graphene supported nickel nanoparticle as a viable replacement for platinum in dye sensitized solar cells[J]. Nanoscale, 2012(4): 926-930.
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