One-step synthesis of the 3D flower-like heterostructure MoS2/CuS nanohybrid for electrocatalytic hydrogen evolution
One-step synthesis of the 3D flower-like heterostructure MoS2/CuS nanohybrid for electrocatalytic hydrogen evolution
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用于电催化析氢的 3D 花状异质结构 MoS2/CuS 纳米杂化物的一步合成
DOI：
10.1016/j.ijhydene.2017.09.184
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发表时间：
2018-01
影响因子：
7.2
通讯作者：
Qin Wenwu
中科院分区：
文献类型：
--
作者：
Zhang Lilan;Guo Yali;Iqbal Anam;Li Bo;Gong Deyan;Liu Wei;Iqbal Kanwal;Liu Weisheng;Qin Wenwu
本文采用一步水热法制备了三种不同的纳米材料：二维MoS 2纳米片、三维球形CuS纳米颗粒和三维花状MoS 2/CuS纳米杂化材料。采用透射电镜（TEM）、场发射扫描电镜（SEM）和X射线衍射（XRD）等手段对合成的MoS 2、CuS和MoS 2/CuS纳米杂化材料进行了表征。采用线性扫描伏安法（LSV）和Tafel斜率法研究了MoS 2纳米片、CuS纳米颗粒和MoS 2/CuS纳米杂化材料的析氢反应（HER）活性。MoS 2/CuS纳米杂化材料的HER活性优于MoS 2纳米片和CuS纳米颗粒，这归因于CuS良好的电子传输能力和MoS 2对氢离子的强还原能力。因此，MoS 2/CuS纳米杂化物表现出优异的HER活性，具有0.15 V的小起始电位、63 mV dec-1的低塔菲尔斜率和相对良好的稳定性。然而，MoS 2纳米片和CuS纳米颗粒分别显示出0.25 V和0.35 V的更大的起始电位，165和185 mV dec−1的更高的塔菲尔斜率。这种三维花状异质结构的MoS 2/CuS纳米杂化催化剂在可再生能源应用中具有巨大的潜力。
In this work, a facile one-step hydrothermal method was developed to fabricate three types different of nanomaterials: the two-dimension (2D) of MoS2nanosheets; 3D spherical CuS nanoparticles; and 3D flower-like heterostructure of MoS2/CuS nanohybrid, respectively. The as-synthesized MoS2, CuS and MoS2/CuS were characterized by transmission electron microscopy (TEM), field emission scanning electron microscopy (SEM) and X-ray diffraction (XRD) etc. The morphology of the MoS2/CuS nanohybrid is different from the MoS2nanosheets and CuS nanoparticles. The hydrogen evolution reaction (HER) activity of MoS2nanosheets, CuS nanoparticles and MoS2/CuS nanohybrid, were investigated by the Linear Sweep Voltammetry (LSV) and Tafel slope. The HER activity of MoS2/CuS nanohybrid is better than those of MoS2nanosheets and CuS nanoparticles, which can be attributed to the good electron-transport ability of CuS and the strong reduction ability of hydrogen ions by MoS2. Thus, MoS2/CuS nanohybrid exhibited excellent activity for HER with a small onset potential of 0.15 V, a low Tafel slope of 63 mV dec−1, and relatively good stability. However, the MoS2nanosheets and CuS nanoparticles respectively shows a bigger onset potential of 0.25 V and 0.35 V, a higher Tafel slope of 165 and 185 mV dec−1. This 3D flower-like heterostructure of MoS2/CuS nanohybrid catalyst exhibits great potential for renewable energy applications.
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影响因子：
7.2
作者：
N. Muradov
通讯作者：
N. Muradov
影响因子：
7.2
作者：
Muradov, N
通讯作者：
Muradov, N
影响因子：
7.2
作者：
B. Losiewicz
通讯作者：
B. Losiewicz
影响因子：
7.2
作者：
N. Muradov;F. Smith;A. T-Raissi
通讯作者：
N. Muradov;F. Smith;A. T-Raissi
影响因子：
16.6
作者：
Casalongue, Hernan Sanchez;Kaya, Sarp;Ogasawara, Hirohito
通讯作者：
Ogasawara, Hirohito