A5079755672- Magnetic and transport properties of perovskites and related materials
- Shape Memory Alloy Transformations
- Magnetic Properties of Alloys
- Thermal Expansion and Ionic Conductivity
- Rare-earth and actinide compounds
- Ammonia Synthesis and Nitrogen Reduction
- Multiferroics and related materials
- Advanced Photocatalysis Techniques
- Metallurgy and Material Forming
- Aluminum Alloys Composites Properties
- Ferroelectric and Piezoelectric Materials
- Advanced Condensed Matter Physics
- Magnesium Alloys: Properties and Applications
- Nanomaterials for catalytic reactions
- Metal Forming Simulation Techniques
- Advanced Thermoelectric Materials and Devices
- Aluminum Alloy Microstructure Properties
- Hydrogen Storage and Materials
- Metal and Thin Film Mechanics
- Intermetallics and Advanced Alloy Properties
- High Entropy Alloys Studies
- Titanium Alloys Microstructure and Properties
- Advanced ceramic materials synthesis
- Algal biology and biofuel production
- Advanced Thermodynamics and Statistical Mechanics
University of Science and Technology Beijing
2016-2025
Hebei University
2021-2025
Sichuan Agricultural University
2024
Beihang University
2015-2022
Central South University
2016-2021
Beijing Normal University
2021
Chinese Academy of Sciences
2011-2020
Technical Institute of Physics and Chemistry
2020
Boise State University
2018
Micron (United States)
2018
Density functional theory calculations revealed that CoO possessed poor HER activity but favorable NRR activity. quantum dots (2–5 nm) supported on graphene exhibited a high NH<sub>3</sub> yield of 21.5 μg h<sup>−1</sup> mg<sup>−1</sup> and faradaic efficiency 8.3% at −0.6 V <italic>vs.</italic> RHE under ambient conditions, superior to most the reported catalysts.
Electrocatalytic N2 reduction reaction (NRR) provides an effective and renewable approach for artificial NH3 production, but still remains a grand challenge because of the low yield Faradaic efficiency (FE). Herein, we reported that SnO2 quantum dots (QDs) supported on reduced graphene oxide (RGO) could efficiently stably catalyze NRR at ambient conditions. The performance resulting SnO2/RGO was studied by both experimental techniques density functional theory calculations. It found...
Abstract Electrochemical reduction of nitrate to ammonia (NO 3 RR) has been recognized as an appealing approach realize both sustainable NH production and waste removal. Herein, from the perspective Lewis acid‐base interaction, a single‐atom Fe‐doped V 2 O 5 (Fe‐V ) catalyst enriched is designed with acid sites, which present maximum ‐Faradaic efficiency 97.1% corresponding yield 12.5 mg h −1 cm −2 at –0.7 versus RHE. Mechanistic studies based on theoretical calculations operando...
Abstract Electrochemical N 2 fixation represents a promising strategy toward sustainable NH 3 synthesis, whereas the rational design of high‐performance catalysts for nitrogen reduction reaction (NRR) is urgently required but remains challenging. Herein, novel hexagonal BN quantum dots (BNQDs) decorated Nb CT x – MXene (BNQDs@Nb ) explored as an efficient NRR catalyst. BNQDs@Nb presents optimum activity with yield rate 66.3 µg h −1 mg (−0.4 V) and Faradaic efficiency 16.7% (−0.3 V),...
We design single-atom W confined in MoO3-x amorphous nanosheets (W1/MoO3-x) comprising W1-O5 motifs as a highly active and durable NORR catalyst. Theoretical operando spectroscopic investigations reveal the dual functions of to (1) facilitate activation protonation NO molecules (2) promote H2O dissociation while suppressing *H dimerization increase proton supply, eventually resulting self-tandem mechanism W1/MoO3-x greatly accelerate energetics NO-to-NH3 pathway. As result, exhibits highest...
Abstract Single‐atom alloys hold great promise for electrocatalytic nitrogen reduction reaction (NRR), while the comprehensive experimental/theoretical investigations of SAAs NRR are still missing. Herein, PdFe 1 single‐atom alloy metallene, in which Fe single atoms confined on a Pd metallene support, is first developed as an effective and robust electrocatalyst, delivering exceptional performance with NH 3 yield 111.9 μg h −1 mg , Faradaic efficiency 37.8 % at −0.2 V (RHE), well long‐term...
Abstract Electroreduction of nitrite to ammonia (NO 2 RR) holds great promise for concurrently achieving efficient NH 3 electrosynthesis and wastewater purification. This study first develops Ni 1 Ru single‐atom alloys as an robust NO RR catalyst. Extensive experiments theoretical computations reveal that isolated atoms electronically couple their adjacent render with high thermodynamic stability, boosted − ‐to‐NH hydrogenation energetics suppressed hydrogen evolution. As a result, assembled...
Current artificial NH3 synthesis relies heavily on the Haber–Bosch process that involves enormous energy consumption and huge CO2 emission. The electrochemical N2 reduction reaction (NRR) offers an eco-friendly sustainable alternative but demands cost-effective efficient NRR electrocatalysts. Herein, NiO nanodots (∼2 nm) supported graphene (NiO/G) were developed as a high-performance electrocatalyst at ambient conditions. Electrochemical tests indicated NiO/G exhibited high yield (18.6 μg...
Abstract Electrochemical conversion of N 2 to NH 3 offers a clean and energy‐saving solution for artificial production, but requires cost‐effective, steady highly efficient catalysts promote reduction reaction (NRR). Herein, CuO employed as new non‐noble‐metal NRR catalyst was investigated both experimentally theoretically. When supporting the nanoparticles on reduced graphene oxide (RGO), it demonstrated that resulting CuO/RGO nanocomposite could effectively robustly catalyze under ambient...
A combination of experimental measurements and DFT calculations revealed that the MoO<sub>2</sub>/RGO hybrid could be a highly active robust catalyst for ambient electrocatalytic NH<sub>3</sub> synthesis.
Abstract Large rotating magnetocaloric effect (MCE) has been observed in some single crystals due to strong magnetocrystalline anisotropy. By utilizing the MCE, a new type of rotary magnetic refrigerator can be constructed, which could more simplified and efficient than conventional one. However, compared with polycrystalline materials, high cost complexity preparation for hinder development this novel refrigeration technology. For first time, here we observe giant MCE textured DyNiSi...
The development of highly active and durable electrocatalysts toward the N2 reduction reaction (NRR) holds a key to ambient electrocatalytic NH3 synthesis. Herein, fluorine (F)-doped SnO2 mesoporous nanosheets on carbon cloth (F-SnO2/CC) were developed as an efficient NRR electrocatalyst. Benefiting from combined structural advantages nanosheet structure F-doping, F-SnO2/CC exhibited high activity with yield 19.3 μg h–1 mg–1 Faradaic efficiency 8.6% at −0.45 V (vs RHE) in 0.1 M Na2SO4,...
Electrochemical reduction of N2 to NH3 is a promising method for artificial fixation, but it requires efficient and robust electrocatalysts boost the reaction (NRR). Herein, combination experimental measurements theoretical calculations revealed that hybrid material in which ZnO quantum dots (QDs) are supported on reduced graphene oxide (ZnO/RGO) highly active stable catalyst NRR under ambient conditions. Experimentally, ZnO/RGO was confirmed favor adsorption due largely exposed sites...
Abstract Urea electrosynthesis from co‐electrolysis of NO 3 − and CO 2 (UENC) provides an alternative route for realizing efficient sustainable urea production. In this work, single‐atom Ru dispersed on Co (Ru 1 Co) is demonstrated as effective robust catalyst the UENC. situ spectroscopic measurements theoretical simulations unravel cooperative effect sites to promote UENC process via a tandem catalysis mechanism, where site activates adsorption hydrogenation form * NH , while...
Bonded La(Fe, Si)13 magnetic refrigeration materials have been prepared, and the microstructure, mechanical properties, magnetocaloric effect (MCE) of bonded LaFe11.7Si1.3C0.2Hx investigated systematically. show porous architecture, properties increase with epoxy resin content, which could fill more pores boundaries thus enhance binding force between different particles. LaFe11.7Si1.3C0.2H1.8 3 wt. % exhibits a compressive strength 162 MPa, 35% higher than that bulk compound. The mass...
Abstract Magnetic refrigeration based on magnetocaloric effect (MCE) has become a promisingly alternative technology to the conventional vapor‐compression refrigeration. A great number of magnetic materials have been reported exhibit larger MCE than that benchmark refrigerant Gd. However, these still severe shortcomings “Non‐MCE” properties, such as hard preparation and fabrication, low thermal conductivity λ, poor corrosion resistance cycling stabilities, which hinder practical application...
The magnetocaloric effect (MCE) of RTSi and RT Al systems with R = Gd–Tm, T Fe–Cu Pd, which have been widely investigated in recent years, is reviewed. It found that these RTX compounds exhibit various crystal structures magnetic properties, then result different MCE. Large MCE has observed not only the typical ferromagnetic materials but also antiferromagnetic materials. properties studied detail to discuss physical mechanism large compounds. Particularly, some such as ErFeSi, HoCuSi,...