Journal ArticleDOI
Hierarchical “nanoroll” like MoS2/Ti3C2Tx hybrid with high electrocatalytic hydrogen evolution activity
TLDR
In this article, a simple strategy to synthesize the hierarchical MoS2/Ti3C2Tx hybrid by combining liquid nitrogen-freezing and subsequent annealing was reported.Abstract:
Developing highly efficient noble-metal-free electrocatalysts for hydrogen evolution reaction (HER) has attracted increasing attentions. Here, we report a simple strategy to synthesize the hierarchical “nanoroll” like MoS2/Ti3C2Tx hybrid by combining liquid nitrogen-freezing and subsequent annealing. The quick freezing of the Ti3C2Tx nanosheets and ammonium tetrathiomolybdate mixture causes a sudden change in the strain of Ti3C2Tx, which leads to an interesting “nanoroll” like hierarchical structure. After annealing at H2/Ar atmosphere, vertically aligned molybdenum sulfide (MoS2) crystallites are in situ formed in and on the nanoroll like Ti3C2Tx. Notably, this hierarchical MoS2/Ti3C2Tx hybrid exhibits excellent HER catalytic activity with a small onset overpotential of 30 mV, and a more than 25-fold increase in the exchange current density compared with MoS2 was observed.read more
Citations
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Journal ArticleDOI
Two-dimensional MXenes: From morphological to optical, electric, and magnetic properties and applications
Xiantao Jiang,Artem V. Kuklin,Alexander Baev,Yanqi Ge,Hans Ågren,Hans Ågren,Han Zhang,Paras N. Prasad +7 more
TL;DR: In this article, the state-of-the-art progress on MXene theory, materials synthesis techniques, morphology modifications, opto-electro-magnetic properties, and their applications are comprehensively discussed.
Journal ArticleDOI
2D/2D/2D heterojunction of Ti3C2 MXene/MoS2 nanosheets/TiO2 nanosheets with exposed (001) facets toward enhanced photocatalytic hydrogen production activity
Yujie Li,Zhaohua Yin,Guanrui Ji,Zhangqian Liang,Yanjun Xue,Yichen Guo,Jian Tian,Xinzhen Wang,Hongzhi Cui +8 more
TL;DR: In this paper, a 2D-2D2D 2D structure of Ti3C2@TiOO2@MoS2 composite is achieved, which shows a remarkable enhancement in the photocatalytic H2 evolution reaction.
Journal ArticleDOI
Rational Design of Two-Dimensional Transition Metal Carbide/Nitride (MXene) Hybrids and Nanocomposites for Catalytic Energy Storage and Conversion
Kang Rui Garrick Lim,Albertus D. Handoko,Srinivasa Kartik Nemani,Brian C. Wyatt,Hai-Ying Jiang,Junwang Tang,Babak Anasori,Zhi Wei Seh +7 more
TL;DR: By clarifying the roles of individual material components in the MXene hybrids, this review provides design strategies to synergistically couple MXenes with associated materials for highly efficient and durable catalytic applications.
Journal ArticleDOI
Structural and Electronic Optimization of MoS2 Edges for Hydrogen Evolution.
Hui Wang,Hui Wang,Xu Xiao,Shuyuan Liu,Chao-Lung Chiang,Xiaoxiao Kuai,Chun-Kuo Peng,Yu-Chang Lin,Xing Meng,Xing Meng,Jianqing Zhao,Jin-Ho Choi,Yan-Gu Lin,Jong-Min Lee,Lijun Gao +14 more
TL;DR: N-MoS2/CN possesses superior HER activity with an overpotential of 114 mV at 10 mA cm-2 and excellent stability over 10 h, delivering one of best MoS2-based HER electrocatalysts, and opens a new venue for optimizing materials with enhanced accessible catalytic sites for energy-related applications.
Journal ArticleDOI
Metal-organic framework derived Co3O4/MoS2 heterostructure for efficient bifunctional electrocatalysts for oxygen evolution reaction and hydrogen evolution reaction
TL;DR: In this paper, the authors synthesized cobalt nanoleaves metal-organic framed work (MOF) on nickel foam substrate with uniform growth, and the as-prepared heterostructure (Co3O4/MoS2) can act as bifunctional electrocatalysts for overall water splitting.
References
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Journal ArticleDOI
Effect of Postetch Annealing Gas Composition on the Structural and Electrochemical Properties of Ti2CTx MXene Electrodes for Supercapacitor Applications
TL;DR: In this paper, the effect of post-etch annealing ambient (Ar, N2, N 2/H2, and air) on the structure and electrochemical properties of two-dimensional Ti2CTx MXene nanosheets was investigated in detail.
Journal ArticleDOI
MoS2 formed on Mesoporous Graphene as a Highly Active Catalyst for Hydrogen Evolution
TL;DR: In this article, a highly active and stable electrocatalyst for hydrogen evolution is developed based on the in situ formation of MoS2 nanoparticles on mesoporous graphene foams (MoS2/MGF).
Journal ArticleDOI
The role of electronic coupling between substrate and 2D MoS2 nanosheets in electrocatalytic production of hydrogen.
Damien Voiry,Raymond Fullon,Jieun Yang,Cecília de Carvalho Castro e Silva,Rajesh Kappera,Ibrahim Bozkurt,Daniel Kaplan,Maureen J. Lagos,Philip E. Batson,Gautam Gupta,Aditya D. Mohite,Liang Dong,Dequan Er,Vivek B. Shenoy,Tewodros Asefa,Manish Chhowalla +15 more
TL;DR: It is shown that efficient charge injection and the presence of naturally occurring sulfur vacancies are responsible for the observed increase in catalytic activity of the 2H basal planes of monolayer MoS2 nanosheets.
Journal ArticleDOI
All The Catalytic Active Sites of MoS2 for Hydrogen Evolution
Guoqing Li,Du Zhang,Qiao Qiao,Yifei Yu,David Peterson,Abdullah Zafar,Raj Kumar,Stefano Curtarolo,Frank Hunte,Steven Shannon,Yimei Zhu,Weitao Yang,Linyou Cao +12 more
TL;DR: It is demonstrated that, in addition to the well-known catalytically active edge sites, sulfur vacancies provide another major active site for the HER, while the catalytic activity of grain boundaries is much weaker.
Journal ArticleDOI
Sn4+ Ion Decorated Highly Conductive Ti3C2 MXene: Promising Lithium-Ion Anodes with Enhanced Volumetric Capacity and Cyclic Performance
Jianmin Luo,Xinyong Tao,Jun Zhang,Yang Xia,Hui Huang,Liyuan Zhang,Yongping Gan,Chu Liang,Zhang Wenkui +8 more
TL;DR: Two-dimensional transition metal carbide materials called MXenes show potential application for energy storage due to their remarkable electrical conductivity and low Li(+) diffusion barrier, but their lower capacity limits their further application in lithium-ion batteries.