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
Ti3C2Tx MXene nanosheet-confined Pt nanoparticles efficiently catalyze dye-sensitized photocatalytic hydrogen evolution reaction
Shixiong Min,Shixiong Min,Yuan Xue,Yuan Xue,Fang Wang,Fang Wang,Zhengguo Zhang,Zhengguo Zhang,Haitao Zhu,Haitao Zhu +9 more
TL;DR: In situ confined growth of Pt nanoparticles on Ti3C2Tx MXene nanosheets affords a highly active Ti3 C2Tx NSs/Pt NPs hybrid catalyst in a dye-sensitized system under visible light irradiation, which demonstrates ∼30 times higher H2 evolution activity than in situ formed free Pt NPs.
Journal ArticleDOI
CoNi alloys with slight oxidation@N,O Co-doped carbon: enhanced collective contributions of cores and shells to multifunctional electrocatalytic activity and Zn–air batteries
TL;DR: In this article, the authors developed CoNi alloys with slight oxidation@N,O co-doped carbon (NOC) as multifunctional catalysts for the oxygen reduction reaction (ORR), oxygen evolution reaction (OER) and hydrogen evolution reaction(HER) and Zn-air batteries.
Journal ArticleDOI
Heterostructure nanohybrids of Ni-doped MoSe2 coupled with Ti2NTx toward efficient overall water splitting
Hui Zong,Ke Yu,Ke Yu,Ziqiang Zhu +3 more
TL;DR: In this paper, a Ni doped MoSe2/Ti2NTx MXene nanosheet heterostructure engineering (represented as Ni-MoSe 2/Ti 2NTx) with low cost and high efficiency as an electrocatalyst was proposed.
Journal ArticleDOI
Construction of Heterogenous S–C–S MoS2/SnS2/r-GO Heterojunction for Efficient CO2 Photoreduction
Shikang Yin,Jinze Li,Linlin Sun,Xin Li,Dong Shen,Xianghai Song,Pengwei Huo,Huiqin Wang,Yongsheng Yan +8 more
TL;DR: The constructed S-C-S heterojunction has a multilevel electron transport mechanism and synergistic effect, which provides the possibility of producing more organic fuel and opens up new prospects for the formation of heterojunctions of chalcogenide transition-metal sulfides.
Journal ArticleDOI
Constructing Ti3C2 MXene/ZnIn2S4 heterostructure as a Schottky catalyst for photocatalytic environmental remediation
TL;DR: In this article, an interfacial contact Ti3C2 MXene/ZnIn2S4 nanosheets (TC/ZISNS) Schottky heterostructure was designed to enhance photogenerated charge separation.
References
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Journal ArticleDOI
Identification of active edge sites for electrochemical H2 evolution from MoS2 nanocatalysts.
Thomas F. Jaramillo,Kristina Pilt Jørgensen,Jacob Lindner Bonde,Jane Hvolbæk Nielsen,Sebastian Horch,Ib Chorkendorff +5 more
TL;DR: The active site for hydrogen evolution, a reaction catalyzed by precious metals, on nanoparticulate molybdenum disulfide (MoS2) is determined by atomically resolving the surface of this catalyst before measuring electrochemical activity in solution.
Journal ArticleDOI
2D metal carbides and nitrides (MXenes) for energy storage
TL;DR: More than twenty 2D carbides, nitrides and carbonitrides of transition metals (MXenes) have been synthesized and studied, and dozens more predicted to exist.
Journal ArticleDOI
MoS2 Nanoparticles Grown on Graphene: An Advanced Catalyst for the Hydrogen Evolution Reaction
TL;DR: In this article, a selective solvothermal synthesis of MoS2 nanoparticles on reduced graphene oxide (RGO) sheets suspended in solution was developed, which exhibited superior electrocatalytic activity in the hydrogen evolution reaction (HER).
Journal ArticleDOI
Conductive two-dimensional titanium carbide ‘clay’ with high volumetric capacitance
TL;DR: This capacitance report reports a method of producing two-dimensional titanium carbide ‘clay’ using a solution of lithium fluoride and hydrochloric acid that offers a much faster route to film production as well as the avoidance of handling hazardous concentrated hydrofluoric acid.
Journal ArticleDOI
Cation Intercalation and High Volumetric Capacitance of Two-Dimensional Titanium Carbide
Maria R. Lukatskaya,Olha Mashtalir,Chang E. Ren,Yohan Dall'Agnese,Patrick Rozier,Pierre-Louis Taberna,Michael Naguib,Patrice Simon,Patrice Simon,Michel W. Barsoum,Yury Gogotsi +10 more
TL;DR: This study demonstrates the spontaneous intercalation of cations from aqueous salt solutions between two-dimensional (2D) Ti3C2 MXene layers, and provides a basis for exploring a large family of 2D carbides and carbonitrides in electrochemical energy storage applications using single- and multivalent ions.