MoS_2/Ru异质结构的制备及其电催化析氢反应性能
Synthesis and electrochemical hydrogen evolution reaction properties of MoS_2/Ru heterostructures
查看参考文献34篇
|
文摘
|
二维层状二硫化钼(MoS_2)是一种非常有前景的替代贵金属铂的电水解制氢催化剂。然而,MoS_2电子导电性较差,且在碱性氢析出反应(HER)中对水分子吸附/裂解的活化能垒较高,限制其在碱性电水解的应用。通过一步水热法将MoS_2纳米片均匀生长在三维导电碳布(CC)上,以有效提高电极导电性。随后在RuCl_3的乙醇溶液中通过溶剂热法可控制备超小Ru纳米颗粒负载MoS_2纳米片,形成CC@MoS_2/Ru异质结构。Ru的负载能有效促进水吸附/裂解反应,从而和MoS_2协同催化HER。采用X射线粉末衍射(XRD)、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)等方法对MoS_2/Ru进行结构和形貌表征。结果表明:MoS_2呈纳米片状交错生长在碳布上,并且超小Ru纳米颗粒(平均粒径2.5nm)均匀负载在MoS_2纳米片上。将CC@MoS_2/Ru作为工作电极,石墨棒和Hg/HgO电极分别为对电极和参比电极进行碱性HER测试。在电流密度为-10mA·cm~(-2)下的过电位仅为71.3mV,Tafel斜率为104.8mV·dec~(-1)。通过对其进行计时电位滴定法稳定性测试,发现在恒电流密度-10mA·cm~(-2)下能够维持至少35h而没有明显性能衰减。 |
|
其他语种文摘
|
Two-dimensional layered MoS_2is considered to be a promising electrocatalyst alternative to Pt for water splitting.However,low electronic conductivity and high energy barrier of water adsorption/dissociation of MoS_2 during alkaline hydrogen evolution reaction (HER)limit its application in water splitting.In this work,the smoothly anchored of MoS_2nanosheet on carbon cloth (CC)was prepared by one-pot hydrothermal method.The CC can significantly improve the electronic conductivity.Subsequently,the MoS_2 nanosheet supported ultra-small Ru nanoparticles were controllably prepared by solvothermal reaction through immersing CC@MoS_2in an ethanol solution containing RuCl_3 and finally formed CC @ MoS_2/Ru heterostructure.Ru can promote water adsorption/dissociation,and then synergistically catalyze HER with MoS_2.The CC@MoS_2/Ru is characterized by X-ray powder diffraction(XRD),X-ray photoelectron spectroscopy(XPS),scanning electron microscope(SEM),and transmission electron microscope(TEM),etc.The results show that the MoS_2nanosheets crossedly aligned on the CC,and the ultra-small Ru nanoparticles(average grain diameter of 2.5nm)are dispersed homogeneously on the MoS_2nanosheets.The CC@MoS_2/Ru is working electrode,the graphite rod and Hg/HgO are counter and reference electrodes, respectively.The alkaline HER are tested and the overpotential is only 71.3 mV to achieve the current density of-10mA·cm~(-2),the Tafel slope of CC@MoS_2/Ru is 104.8mV·dec~(-1).The chronopotentiometry is performed at-10mA·cm~(-2) to evaluate the stability of CC@MoS_2/Ru. After the 35h,the neglectable potential attenuation can be observed. |
|
来源
|
材料工程
,2022,50(4):44-52 【核心库】
|
|
DOI
|
10.11868/j.issn.1001-4381.2020.000991
|
|
关键词
|
MoS_2/Ru异质结构
;
电催化
;
碱性氢析出反应
;
协同作用
|
|
地址
|
1.
西北大学化工学院, 西安, 710069
2.
西北大学化学与材料科学学院, 西安, 710127
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1001-4381 |
|
学科
|
化学 |
|
基金
|
国家自然科学基金项目
;
中国博士后科学基金
|
|
文献收藏号
|
CSCD:7208404
|
参考文献 共
34
共2页
|
|
1.
李嘉辰.
过渡金属纳米功能材料的制备及在电催化水分解的应用,2019
|
被引
1
次
|
|
|
|
|
2.
Lin L. Engineered 2Dtransition metal dichalcogenides-a vision of viable hydrogen evolution reaction catalysis.
Advanced Energy Materials,2020,10(16):1903870
|
被引
13
次
|
|
|
|
|
3.
Kim M. Covalent 0D-2Dheterostructuring of Co_9S_8-MoS_2for enhanced hydrogen evolution in all pH electrolytes.
Advanced Functional Materials,2020,30(40):2002536
|
被引
10
次
|
|
|
|
|
4.
徐晨曦. 金属相二硫化钼在能量储存与转化中的应用进展.
材料工程,2020,48(9):34-46
|
被引
3
次
|
|
|
|
|
5.
Wang Q. Design of active nickel single-atom decorated MoS_2as a pH-universal catalyst for hydrogen evolution reaction.
Nano Energy,2018,53:458-467
|
被引
31
次
|
|
|
|
|
6.
Gupta U. Hydrogen generation by water splitting using MoS_2and other transition metal dichalcogenides.
Nano Energy,2017,41:49-65
|
被引
13
次
|
|
|
|
|
7.
Jaramillo T F. Identification of active edge sites for electrochemical H_2evolution from MoS_2nanocatalysts.
Science,2007,317(5834):100-102
|
被引
269
次
|
|
|
|
|
8.
Hu J. Interface modulation of MoS_2/metal oxide heterostructures for efficient hydrogen evolution electrocatalysis.
Small,2020,16:2002212
|
被引
8
次
|
|
|
|
|
9.
Liu P. In-plane intergrowth CoS_2/MoS_2 nanosheets:binary metal-organic framework evolution and efficient alkaline HER electrocatalysis.
Journal of Materials Chemistry A,2020,8(22):11435-11441
|
被引
2
次
|
|
|
|
|
10.
Zhang B. Interface engineering:the Ni(OH)_2/MoS_2heterostructure for highly efficient alkaline hydrogen evolution.
Nano Energy,2017,37:74-80
|
被引
30
次
|
|
|
|
|
11.
Li J. Synergistic effect of ultrafine nano-Ru decorated cobalt carbonate hydroxides nanowires for accelerated alkaline hydrogen evolution reaction.
Electrochimica Acta,2020,331:135367
|
被引
2
次
|
|
|
|
|
12.
Zang Y. Tuning orbital orientation endows molybdenum disulfide with exceptional alkaline hydrogen evolution capability.
Nature Communications,2019,10:1217
|
被引
18
次
|
|
|
|
|
13.
Zhang J. Single-atom Ru doping induced phase transition of MoS_2and S vacancy for hydrogen evolution reaction.
Small Methods,2019,3(12):1900653
|
被引
7
次
|
|
|
|
|
14.
Ali M. Efficient hydrogen evolution reaction catalysis in alkaline media by all-in-one MoS_2 with multifunctional active sites.
Advanced Materials,2018,30:1707105
|
被引
18
次
|
|
|
|
|
15.
Li C. Flexible and free-standing hetero-electrocatalyst of high-valence-cation doped MoS_2/MoO_2/CNT foam with synergistically enhanced hydrogen evolution reaction catalytic activity.
Journal of Materials Chemistry A,2020,8(30):14944-14954
|
被引
3
次
|
|
|
|
|
16.
Subbaraman R. Enhancing hydrogen evolution activity in water splitting by tailoring Li~+-Ni(OH)_2-Pt interfaces.
Science,2011,334(6060):1256-1260
|
被引
120
次
|
|
|
|
|
17.
Hu J. Nanohybridization of MoS_2 with layered double hydroxides efficiently synergizes the hydrogen evolution in alkaline media.
Joule,2017,1(2):383-393
|
被引
34
次
|
|
|
|
|
18.
Luo Y. Two-dimensional MoS_2confined Co(OH)_2electrocatalysts for hydrogen evolution in alkaline electrolytes.
ACS Nano,2018,12:4565-4573
|
被引
18
次
|
|
|
|
|
19.
Cheng P. Core-shell MoS_2@CoO electrocatalyst for water splitting in neural and alkaline solutions.
Journal of Physical Chemistry C,2019,123(10):5833-5839
|
被引
4
次
|
|
|
|
|
20.
Luo Z. Reactant friendly hydrogen evolution interface based on di-anionic MoS_2surface.
Nature Communications,2020,11(1):1116
|
被引
8
次
|
|
|
|
|
了解气象卫星更多信息，请访问