A5067236237- Electrocatalysts for Energy Conversion
- Advanced Photocatalysis Techniques
- Catalytic Processes in Materials Science
- Advanced battery technologies research
- Fuel Cells and Related Materials
- Advanced Memory and Neural Computing
- Ammonia Synthesis and Nitrogen Reduction
- Copper-based nanomaterials and applications
- Advanced Nanomaterials in Catalysis
- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Nanomaterials for catalytic reactions
- MXene and MAX Phase Materials
- Chalcogenide Semiconductor Thin Films
- CO2 Reduction Techniques and Catalysts
- TiO2 Photocatalysis and Solar Cells
- Electrochemical Analysis and Applications
- Inorganic Chemistry and Materials
- Layered Double Hydroxides Synthesis and Applications
- Carbon and Quantum Dots Applications
- Catalysis and Hydrodesulfurization Studies
- Energetic Materials and Combustion
University of Science and Technology of China
2018-2024
Hefei National Center for Physical Sciences at Nanoscale
2019-2022
Hefei University
2019-2021
Central South University of Forestry and Technology
2017-2018
Central South University
2017-2018
Abstract Endowing materials with specific functions that are not readily available is always of great importance, but extremely challenging. Co 4 N, its beneficial metallic characteristics, has been proved to be highly active for the oxidation water, while it notoriously poor catalyzing hydrogen evolution reaction (HER), because unfavorable d‐band energy level. Herein, we successfully endow N prominent HER catalytic capability by tailoring positions center through transition‐metal doping....
Metal sulfides for hydrogen evolution catalysis typically suffer from unfavorable desorption properties due to the strong interaction between adsorbed H and intensely electronegative sulfur. Here, we demonstrate a general strategy improve of metal by modulating surface electron densities. The N modulated NiCo
Abstract Molybdenum disulfide is naturally inert for alkaline hydrogen evolution catalysis, due to its unfavorable water adsorption and dissociation feature originated from the unsuitable orbital orientation. Herein, we successfully endow molybdenum with exceptional capability by carbon-induced modulation. The prepared carbon doped displays an unprecedented overpotential of 45 mV at 10 mA cm −2 , which substantially lower than 228 also represents best catalytic activity among ever-reported...
The HER activities of P-rich transition metal phosphides can be substantially boosted by N-induced lattice contraction.
Abstract Hydrogen evolution reaction (HER) is more sluggish in alkaline than acidic media because of the additional energy required for water dissociation. Numerous catalysts, including NiO, that offer active sites dissociation have been extensively investigated. Yet, overall HER performance NiO still limited by lacking favorable H adsorption sites. Here we show a strategy to activate through carbon doping, which creates under-coordinated Ni adsorption. DFT calculations reveal dopant...
Abstract Although it is commonly believed that the water‐dissociation‐related Volmer process rate‐limiting step for alkaline hydrogen evolution reaction (HER) on Pt‐based catalysts, underlying essence, particularly atomic scale, still remains unclear. Herein, revealed sluggish water‐dissociation behavior probably stems from unfavorable orbital orientation and kinetic issue successfully resolved via N‐induced tuning. Impressively, N modified Pt–Ni nanowires deliver an ultralow overpotential...
Abstract Endowing materials with specific functions that are not readily available is always of great importance, but extremely challenging. Co 4 N, its beneficial metallic characteristics, has been proved to be highly active for the oxidation water, while it notoriously poor catalyzing hydrogen evolution reaction (HER), because unfavorable d‐band energy level. Herein, we successfully endow N prominent HER catalytic capability by tailoring positions center through transition‐metal doping....
Abstract Electrocatalysts based on Fe and other transition metals are regarded as most promising candidates for accelerating the oxygen evolution reaction (OER), whereas whether is catalytic active site OER still under debate. Here, unary Fe‐ binary FeNi‐ catalysts, FeOOH FeNi(OH) x , produced by self‐reconstruction. The former a dual‐phased FeOOH, possessing abundant vacancies (V O ) mixed‐valence states, delivering highest performance among all iron oxides‐ hydroxides‐ powder catalysts...
The capability of manipulating the interfacial electronic coupling is key to achieving on-demand functionalities catalysts. Herein, it demonstrated that Fe2 N can be effectively regulated for hydrogen evolution reaction (HER) catalysis by vacancy-mediated orbital steering. Ex situ refined structural analysis reveals and coordination states well manipulated nitrogen vacancies, which impressively exhibit strong correlation with catalytic activities. Theoretical studies further indicate vacancy...
The sluggish water dissociation kinetics of Ni<sub>3</sub>N is significantly accelerated by <italic>in situ</italic> interfacial engineering. Owing to the unique synergy between and MoO<sub>2</sub>, Ni<sub>3</sub>N/MoO<sub>2</sub> displays exceptional alkaline HER activity.
Despite the widespread investigations on M-N-C type single atom catalysts (SACs) for oxygen evolution reaction (OER), an internal conflict between its intrinsic thermodynamically structural instability and apparent catalytic steadiness has long been ignored. Clearly unfolding this contradiction is necessary meaningful understanding real structure-property relation of SACs. Herein, by using well-designed pH-dependent metal leaching experiments X-ray absorption spectroscopy, unconventional...
Abstract Manipulating the thermal decomposition behavior of energetic materials is key to further pushing combustion performance solid rocket propellants. Herein, atomically dispersed Pb single atoms on polydopamine (PDA‐Pb) are demonstrated, which display unprecedented catalytic activity toward cyclotrimethylenetrinitramine (RDX). Impressively, RDX‐based propellants with addition PDA‐Pb catalyst exhibit substantially enhanced burning rates (14.98 mm s −1 at 2 MPa), 4.8 times faster than...
The activity and stability toward acidic water oxidation on Ir–W@Ir–WO<sub>3−x</sub> can be boosted by regulating the adsorption behavior of oxygen-containing intermediates.
Crystalline Pt catalyst for alkaline hydrogen evolution reaction (HER) catalysis is essentially hindered by the slow water dissociation kinetics, originated from almost full-filled d orbitals and limited numbers of coordination-unsaturated sites. Breaking symmetrical atomic arrangements theoretically feasible to solve this issue, but technically challenging. Herein, surface-disordered Pt–Ni nanowires (d-Pt–Ni NWs) are synthesized via a lithiation/delithiation method. The d-Pt–Ni NWs exhibit...
Simultaneously boosting the activity and selectivity of CO2 reduction catalysts remains a challenge. In this work, surface-adsorbed hydroxyl (OHad) on SnO promoted into formate through noncovalent interactions (NCIs). The nanosheet with bound groups achieves high Faradic efficiency 90.5% partial current density 61.8 mA cm–2 for production at −1.06 V vs reversible hydrogen electrode, which is substantially better than performance pristine material. Theoretical analysis reveals OHad-introduced...
Abstract Despite the widespread investigations on M‐N‐C type single atom catalysts (SACs) for oxygen evolution reaction (OER), an internal conflict between its intrinsic thermodynamically structural instability and apparent catalytic steadiness has long been ignored. Clearly unfolding this contradiction is necessary meaningful understanding real structure‐property relation of SACs. Herein, by using well‐designed pH‐dependent metal leaching experiments X‐ray absorption spectroscopy,...
We developed an one-step hydrothermal method to synthesize carbon-nitrogen quantum dots (CNQDs) with oxygen-rich functional groups. The sample was characterized by TEM, AFM, FT-IR, XPS, UV–vis absorption and PL spectra. O/C N/C atomic ratio of typical CNQDs diameters 3–6 nm are ca. 0.4 0.2, respectively. Without noble metal cocatalyst, the photocatalytic H2 production rate CNQDs/TiO2 nanofibers (NFs) (112.4 μmol h−1 g−1) is 1.8 times higher than that TiO2 NFs. good light contributes enhanced...
Cobalt nitrides with a high ratio of cobalt–cobalt interaction have been extensively explored as electrocatalysts for hydrogen evolution reaction (HER) catalysis. However, the tilted orbital orientation and limited empty d ‐orbitals above Fermi level ( E F ) result in unfavorable water adsorption/activation. Herein, facile interfacial engineering by situ growing MoN particles on Co 4 N nanowire arrays to explore synergistic mechanism boosting HER catalysis is developed. The overpotential...
SPLITTINGPt-Ni(N) nanowires are presented by Xiaojing Liu, Gongming Wang, and co-workers in article number 1807780.The introduced nitrogen can enable the Ni sites to create empty dz 2 orbitals with superior orientation for water adsorption dissociation, thus resolve kinetic issue of Pt-Ni alkaline hydrogen evolution.