Preparation of 1T′-Phase ReS2xSe2(1-x) (x = 0–1) Nanodots for Highly Efficient Electrocatalytic Hydrogen Evolution Reaction

Lai, Zhuangchai; Chaturvedi, Apoorva; Wang, Yun; Tran, Tri; Liu, Xiaozhi; Tan, Chaoliang; Luo, Zhimin; Chen, Bin; Huang, Ying; Nam, Gwang‐Hyeon; Zhang, Zhicheng; Chen, Ye; Hu, Zhaoning; Li, Bing; Xi, Shibo; Zhang, Qinghua; Zong, Yun; Gu, Lin; Kloc, Christian; Du, Yonghua; Zhang, Hua

doi:10.1021/jacs.8b04513

Cited by 109 publications

(70 citation statements)

References 38 publications

(66 reference statements)

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“…A number of metal chalcogenides materials have been demonstrated to generate functional hybrid nanoarchitectures though different optimizing strategy, such as morphology (1D, 2D, 3D, and other morphology), structural control (porous structure, phase statue regulation, amorphous structure), electronic structure optimization (defects, vacancy, nanointerface, stress regulation), heterostructure with other nanomaterials (oxides, hydroxides, carbon materials, noble metals), and so on ( Table 2 ). 49–95 It is noteworthy that despite that they possess an excellent electrocatalytic performance for water splitting, the morphology, structure, valence state and content change of the elements, and electronic properties (conductivity, bandgap, density of states) of those metal chalcogenides should be carefully confirmed after electrocatalytic reaction of water splitting due to the inevitable oxidation will happen on the surface of the electrocatalysts during OER, and the reduction reaction will also happen under HER condition. Therefore, an in‐depth study should be made to confirm the electrocatalytic performance changes of those surface modified metal chalcogenides.…”

Section: Various Strategies Applicated In Metal Chalcogenides For Watmentioning

confidence: 99%

“…Generally, the pyrite‐type transition metal disulfide (FeS 2 ) with abundant S 2 2− ions show fast electrical transport and have employed as promising catalysts for electrocatalytic reactions,78–82 but the lack of basic active sites limited their intrinsic activity 83–88. Besides, metal chalcogenides can also be made into various heterostructures and nanocomposites, which show enhanced catalysis in electrochemical reactions ( Figure ) 96–116…”

Section: Introductionmentioning

confidence: 99%

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Optimized Metal Chalcogenides for Boosting Water Splitting

et al. 2020

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splitting (2H 2 O → 2H 2 + O 2 ), consisting of hydrogen evolution and oxygen evolution reaction (HER/OER), can convert electricity to chemical energy in H 2 and O 2 for further energy applications. The practical application of overall water splitting, however, is still limited due to the lack of effective and stable catalysts to reduce reaction energy barrier and enhance Faraday efficient for both reactions. [6][7][8][9][10] Different materials have been studied for overall water splitting catalysis, like metal chalcogenides, metal carbides, oxides, etc. The transition metal carbides, especially graphene, have a better electroconductivity, ductility, and high surface area which display excellent performance in water splitting. [11][12][13] Oxides as another abundant species on the earth also show better water splitting performance, but their stability in hard media is not very good. [14][15][16] The layered double hydroxides (LDH) with unique structure, abundant interstratified electrons and channels for intermediate adsorption and desorption display wonderful water splitting performance. [17][18][19][20] Additionally, the metalorganic frameworks (MOFs) and their based nanocrystals as newly nanomaterials have got much attention in various fields, but their structure limited the active sites exposure for the complete coordinative metal sites. [21][22][23][24][25] Therefore, it is important to enable the cost-effective, large-scale production of these catalysts, and further improve the performance and efficiency of overall water splitting.Transition metal chalcogenides have many different compositions with various lattice structure, while those materials also have unique electronic structures. [26] Based on those superior properties, the transition metal chalcogenides show promising application in many energy applications, [27] such as electrochemical catalysis, photocatalysis, metal-air batteries, and other energy conversion reactions. Especially for their abundant defects sties, [26][27][28] tunable electronic structure, [29][30][31][32] and various morphology, [33][34][35][36][37] the transition metal chalcogenides exhibit boosting performance for water splitting. However, they still have some disadvantages, such as poor conductivity, activity, and stability, in water splitting limited their large-scale industrial application. [38][39][40][41][42] How to synthesize the active and stable transition metal chalcogenides is still a big challenge for wide application. In this Review, the several promising strategies are designed to prepare the active and stable transition metal chalcogenides (Scheme 1). → 2H 2 + O 2 ) is a very promising avenue to effectively and environmentally friendly produce highly pure hydrogen (H 2 ) and oxygen (O 2 ) at a large scale. Different materials have been developed to enhance the efficiency for water splitting. Among them, chalcogenides with unique atomic arrangement and high electronic transport show interesting catalytic properties in various electrochemical reactions, such as the ...

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Section: Various Strategies Applicated In Metal Chalcogenides For Watmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimized Metal Chalcogenides for Boosting Water Splitting

et al. 2020

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“…[ 35 ] The positions of the peaks that correspond to Re–Se and Re–Re bonding are located at 2.11 and 2.91 Å, respectively. [ 36 ] Herein, the number of Se edges in ReSe 2 can be quantified using the coordination number ratio between Re and Se. [ 37 ] An increase in Re–Se coordination in Re 0.94 Mo 0.06 Se 2 indicates that Se edges are effectively exposed when the structure is doped with Mo, which will provide more active sites for the HER process in good agreement with previous electrochemical characterizations results.…”

Section: Figurementioning

confidence: 99%

Dual‐Enhanced Doping in ReSe₂ for Efficiently Photoenhanced Hydrogen Evolution Reaction

Wang

Han

et al. 2020

Advanced Science

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metal dichalcogenides (TMDs) are a typical 2D nanomaterial and have shown substantial progress in terms of catalysis and energy storage applications. [2] In the last few years, TMD-based catalysts have been optimized by introducing additional basalplane vacancies and metastable metallic crystal structures to overcome their low concentration of electrocatalytic activity sites and poor intrinsic electroconductibility; thus, the catalysts exhibited much enhanced HER catalytic activity. [3] In addition to achieving significant advances in structural designs, other driving forces, such as thermal energy, [4] field effect, [5] and strain engineering, [6] have also been utilized to boost the HER performance of electrocatalysts. [7] Because solar energy is an available clean and sustainable energy, solar-driven photocatalytic and photoelectrochemical water splitting has become one of the hottest topics in materials science. [8] Rhenium dichalcogenides (ReX 2 , X = S or Se) are a unique category of compounds that have both distorted triclinic symmetry (1T) crystal structure and excellent photoelectric properties with weak interlayer coupling; these characteristics ensure their excellent Rhenium dichalcogenides (ReX 2 , X = S or Se) are catalysts that have great promise for the photoenhanced hydrogen evolution reaction (PE-HER) because of their unique physiochemical properties. However, the catalytic performance is still restricted by their low concentration of electrocatalytic activity sites and poor injection of hot electrons. Herein, dual-enhancement in ReSe 2 nanosheets (NSs) with high concentration of active sites and efficient use of hot electrons is simultaneously achieved with moderate Mo doping. Contributions from exposed catalytically active sites, improved electrical conductivity, and enhanced solar spectral response are systematically investigated. Superior PE-HER catalytical performance is obtained in Re 0.94 Mo 0.06 Se 2 , which has more catalytically active sites and optimized band structure than other Re 1−x Mo x Se 2 samples. Here, it is demonstrated that only doping can reduce the overpotential (η 10 ) from 239 to 174 mV at −10 mA cm −2 (Δ1η 10 = 65 mV). Then, η 10 is further improved to 137 mV under simulated AM 1.5 sun illumination (Δ2η 10 = 37 mV). The total improvement (Δη 10 ) toward PE-HER is 102 mV (Δ1η 10 + Δ2η 10 = 102 mV) in optimal Re 0.94 Mo 0.06 Se 2 . This work presents a new perspective for researching highefficiency photoenhanced HER ReSe 2 -based electrocatalysts and other layered transition metal dichalcogenides. Figure 4. XANES spectra (inset in panel (a)) and a) EXAFS spectra of the as-exfoliated ReSe 2 and Re 0.94 Mo 0.06 Se 2 NSs. b) Density functional theory schematic diagram. c) HER free-energy diagram. d) Density of states plots for monolayers of ReSe 2 , Re 0.94 Mo 0.06 Se 2 , and MoSe 2 . e-g) Schematic diagrams of the separation and recombination process for an electron-hole in Re 1−x Mo x Se 2 . www.advancedsciencenews.com 2000216 (7 of 7)

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“…While making stable T‐MoS 2 is the basic criterion for improved HER activity, the inclusion of small molecules or ions to engineer 1T‐phase MoS 2 along with high purity and controlled electronic properties may be an alternative option . Lai and co‐workers have synthesized a series of 1T′‐phase ReS 2 x Se 2(1− x ) ( x = 0–1) nanodots to produce hydrogen from electrochemical water splitting in an acidic environment. Among the synthesized products, the 1T′‐phase ReSSe nanodots show the best hydrogen evolution performance along with a Tafel slope of 50.1 mV dec −1 and a low overpotential of 84 mV at a current density of 10 mA cm −2 .…”

Section: Spe For Energy Conversion and Environmental Treatmentmentioning

confidence: 99%

Structural‐Phase Catalytic Redox Reactions in Energy and Environmental Applications

Uddin

Zhang

et al. 2020

Advanced Materials

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The structure–property engineering of phase‐based materials for redox‐reactive energy conversion and environmental decontamination nanosystems, which are crucial for achieving feasible and sustainable energy and environment treatment technology, is discussed. An exhaustive overview of redox reaction processes, including electrocatalysis, photocatalysis, and photoelectrocatalysis, is given. Through examples of applications of these redox reactions, how structural phase engineering (SPE) strategies can influence the catalytic activity, selectivity, and stability is constructively reviewed and discussed. As observed, to date, much progress has been made in SPE to improve catalytic redox reactions. However, a number of highly intriguing, unresolved issues remain to be discussed, including solar photon‐to‐exciton conversion efficiency, exciton dissociation into active reductive/oxidative electrons/holes, dual‐ and multiphase junctions, selective adsorption/desorption, performance stability, sustainability, etc. To conclude, key challenges and prospects with SPE‐assisted redox reaction systems are highlighted, where further development for the advanced engineering of phase‐based materials will accelerate the sustainable (active, reliable, and scalable) production of valuable chemicals and energy, as well as facilitate environmental treatment.

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Preparation of 1T′-Phase ReS_2xSe_2(1-x) (x = 0–1) Nanodots for Highly Efficient Electrocatalytic Hydrogen Evolution Reaction

Cited by 109 publications

References 38 publications

Optimized Metal Chalcogenides for Boosting Water Splitting

Optimized Metal Chalcogenides for Boosting Water Splitting

Dual‐Enhanced Doping in ReSe₂ for Efficiently Photoenhanced Hydrogen Evolution Reaction

Structural‐Phase Catalytic Redox Reactions in Energy and Environmental Applications

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Preparation of 1T′-Phase ReS2xSe2(1-x) (x = 0–1) Nanodots for Highly Efficient Electrocatalytic Hydrogen Evolution Reaction

Cited by 109 publications

References 38 publications

Optimized Metal Chalcogenides for Boosting Water Splitting

Optimized Metal Chalcogenides for Boosting Water Splitting

Dual‐Enhanced Doping in ReSe2 for Efficiently Photoenhanced Hydrogen Evolution Reaction

Structural‐Phase Catalytic Redox Reactions in Energy and Environmental Applications

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Preparation of 1T′-Phase ReS_2xSe_2(1-x) (x = 0–1) Nanodots for Highly Efficient Electrocatalytic Hydrogen Evolution Reaction

Dual‐Enhanced Doping in ReSe₂ for Efficiently Photoenhanced Hydrogen Evolution Reaction