Enhanced catalytic activity in strained chemically exfoliated WS 2 nanosheets for hydrogen evolution
Damien Voiry,Hisato Yamaguchi,Junwen Li,Rafael Silva,Diego C. B. Alves,Takeshi Fujita,Mingwei Chen,Tewodros Asefa,Vivek B. Shenoy,Goki Eda,Manish Chhowalla +10 more
Reads0
Chats0
TLDR
Analyses indicate that the enhanced electrocatalytic activity of WS₂ is associated with the high concentration of the strained metallic 1T (octahedral) phase in the as-exfoliated nanosheets.Abstract:
Efficient evolution of hydrogen via electrocatalysis at low overpotentials is promising for clean energy production. Monolayered nanosheets of chemically exfoliated WS2 are shown to be efficient catalysts for hydrogen evolution at very low overpotentials. The enhanced catalytic performance is associated with the high concentration of the strained metallic octahedral phase in the exfoliated nanosheets.read more
Citations
More filters
Journal ArticleDOI
Ultrathin two-dimensional materials for photo- and electrocatalytic hydrogen evolution
TL;DR: In this paper, a critical appraisal of advantages and advancements for ultrathin 2D materials in catalytic hydrogen evolution, with an emphasis on structure-activity relationship, is presented, and strategies for tailoring the microstructure, electronic structure, and local atomic arrangement, so as to further boost the hydrogen evolution activity, are discussed.
Journal ArticleDOI
Electrocatalysis of layered Group 5 metallic transition metal dichalcogenides (MX2, M = V, Nb, and Ta; X = S, Se, and Te)
TL;DR: In this paper, the inherent electrochemistry and the charge-transfer property of the entire set of Group 5 TMDs in the bulk form were examined and the authors identified VTe2 as the best performing material for HER contrary to the widely predicted VS2.
Journal ArticleDOI
High-Yield Exfoliation of Ultrathin Two-Dimensional Ternary Chalcogenide Nanosheets for Highly Sensitive and Selective Fluorescence DNA Sensors
Chaoliang Tan,Peng Yu,Yanling Hu,Yanling Hu,Junze Chen,Ying Huang,Yongqing Cai,Zhimin Luo,Bing Li,Qipeng Lu,Lianhui Wang,Zheng Liu,Hua Zhang +12 more
TL;DR: As a proof-of-concept application, the single-layer Ta2NiS5 is used as a novel fluorescence sensing platform for the detection of DNA with excellent selectivity and high sensitivity (with detection limit of 50 pM).
Journal ArticleDOI
Regulating the Charge and Spin Ordering of Two-Dimensional Ultrathin Solids for Electrocatalytic Water Splitting
TL;DR: In this paper, the fundamental relationship between intrinsic charge and spin ordering and electrocatalytic properties is discussed, and a review of recent attempts to regulate electrical behavior and spin order in 2D ultrathin solids is presented.
Journal ArticleDOI
Nanoporous Metal Enhanced Catalytic Activities of Amorphous Molybdenum Sulfide for High‐Efficiency Hydrogen Production
TL;DR: This work fabricated a robust electrocatalyst by chemically depositing an ultrathin layer of amorphous molybdenum sulfide on the internal surface of dealloyed nanoporous gold that exhibits superior electrocatalysis toward hydrogen evolution reaction in both acidic and neutral media.
References
More filters
Journal ArticleDOI
Generalized Gradient Approximation Made Simple
TL;DR: A simple derivation of a simple GGA is presented, in which all parameters (other than those in LSD) are fundamental constants, and only general features of the detailed construction underlying the Perdew-Wang 1991 (PW91) GGA are invoked.
Journal ArticleDOI
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set.
Georg Kresse,Jürgen Furthmüller +1 more
TL;DR: An efficient scheme for calculating the Kohn-Sham ground state of metallic systems using pseudopotentials and a plane-wave basis set is presented and the application of Pulay's DIIS method to the iterative diagonalization of large matrices will be discussed.
Journal ArticleDOI
Projector augmented-wave method
TL;DR: An approach for electronic structure calculations is described that generalizes both the pseudopotential method and the linear augmented-plane-wave (LAPW) method in a natural way and can be used to treat first-row and transition-metal elements with affordable effort and provides access to the full wave function.
Journal ArticleDOI
Atomically thin MoS2: a new direct-gap semiconductor
TL;DR: The electronic properties of ultrathin crystals of molybdenum disulfide consisting of N=1,2,…,6 S-Mo-S monolayers have been investigated by optical spectroscopy and the effect of quantum confinement on the material's electronic structure is traced.
Journal ArticleDOI
Single-layer MoS2 transistors
TL;DR: Because monolayer MoS(2) has a direct bandgap, it can be used to construct interband tunnel FETs, which offer lower power consumption than classical transistors, and could also complement graphene in applications that require thin transparent semiconductors, such as optoelectronics and energy harvesting.