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
A Combined experimental and theoretical study of the accelerated hydrogen evolution kinetics over wide pH range on porous transition metal doped tungsten phosphide electrocatalysts
Jiajun Wang,Jiajun Wang,Kuan Chang,Kuan Chang,Zeyu Sun,Ji Hoon Lee,Brian M. Tackett,Cheng Zhang,Jingguang G. Chen,Chang-jun Liu +9 more
TL;DR: In this article, porous transition metal doped tungsten phosphide (M-WP, M=Mo, Co) catalysts have been developed as enhanced HER electrocatalysts in comparison with pristine WP.
Journal ArticleDOI
Synthesis, characterization, photocatalytic and antibacterial properties of copper Ferrite/MXene (CuFe2O4/Ti3C2) nanohybrids
Ibrahim A. Alsafari,Sana Munir,Sonia Zulfiqar,Muhammad Saqib Saif,Muhammad Farooq Warsi,Muhammad Shahid +5 more
TL;DR: In this paper, the synthesis of CuFe2O4/MXene nanohybrids was carried out via an ultrasonication approach and the prepared composite material exhibited an outstanding photocatalytic performance and antibacterial activity compared to individual CuFe 2O4 (CF) and MXene.
Journal ArticleDOI
Facile Synthesis of High-Performance Nitrogen-Doped Hierarchically Porous Carbon for Catalytic Oxidation
Zhe Yang,Xiaoguang Duan,Jun Wang,Yang Li,Xiaobin Fan,Fengbao Zhang,Guoliang Zhang,Wenchao Peng +7 more
TL;DR: In this article, nitrogen-doped and hierarchically porous carbons with ultrahigh catalysts were used for advanced water purification without secondary pollution, and they were shown to be metal-free catalysts.
Journal ArticleDOI
Insight into the excellent catalytic activity of (CoMo)S2/graphene for hydrogen evolution reaction
TL;DR: In this article, a catalyst of (CoMoS2/graphene) was designed and synthesized, which exhibits excellent performance with low onset potential (28mV), overpotential (100mV) and Tafel slope (60.8mV dec-1).
Journal ArticleDOI
A VS2@N-doped carbon hybrid with strong interfacial interaction for high-performance rechargeable aqueous Zn-ion batteries
TL;DR: In this article, an effective in situ hybridization method to prepare spindle-like vanadium disulfide (VS2) nanocrystals on a nitrogen doped carbon (N-doped carbon) layer was proposed and systematically explored its electrochemical property as the cathode material for rechargeable aqueous zinc-ion (Znion) batteries.
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.