Ultrafine particles (UFP) acting as cloud condensation nuclei (CCN) are the driving force behind changing rainfall patterns. Recently observed weather extremes like …
Ultrafine CoRu alloy nanoclusters densely anchored on Nitrogen-Doped graphene nanotubes for a highly efficient hydrogen evolution reaction ... the CoRu-MOF nanotubes were converted into N-doped graphene (NG) nanotubes with ultrafine CoRu nanoclusters (hereon called Co-xRu@NG-T; x = 0, 5, 10, 15, 25 representing the Ru content of 0-0.25 …
Nitrogen-doped mesoporous carbon nanosphere (NMCS) with tunable sizes and uniform mesoporosity was synthesized by a facile soft-templating method. During the synthesis, F127 (PEO–PPO–PEO …
@article{Huang2024UltrafineRN, title={Ultrafine Ru nanoparticles on nitrogen-doped CNT arrays for HER: A CVD-based protocol achieving microstructure design and strong catalyst-support interaction}, author={Moujie Huang and Yongsong Ma and Jingbo Yang and Lingyun Xu and Hangqi Yang and Miao Wang and Xin Ma and Xin Xia and Junhao Yang and Deli ...
Carbon-supported Ru-based catalysts have shown great potential in the hydrodeoxygenation of biomass-derived chemicals but still suffer from the uneven/unstable metal loading owing to the weak affinity between the metal and the carbon-based support. Herein, novel ultrafine Ru nanoparticles supported on lignin-derived nitrogen-doped …
Ultrafine Co 3 O 4 embedded in nitrogen-doped graphene with synergistic effect and high stability for supercapacitors Yuan Li, Denghui Pan, Mingmei Zhang *, Jimin Xie and …
Electrochemical nitrogen reduction reaction (NRR) is a green and sustainable method for NH3 production, ... Wang H. et al. Ultrafine AuCu nanowires for electrocatalytic nitrogen fixation // Inorganic Chemistry Frontiers. 2024. Vol. 11. No. 3. pp. 892-898. GOST all authors (up to 50) Copy.
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Lithium-Sulfur Batteries: Ultrafine Co 3 Se 4 Nanoparticles in Nitrogen-Doped 3D Carbon Matrix for High-Stable and Long-Cycle-Life Lithium Sulfur Batteries (Adv. Energy Mater. 19/2020) Dong Cai, Dong Cai
Engineering three-dimensional nitrogen-doped carbon black embedding nitrogen-doped graphene anchoring ultrafine surface-clean Pd nanoparticles as efficient ethanol oxidation electrocatalyst. Author links open overlay panel Shuwen Li a, Junhao Shu a, Sizhuo Ma a, Honglei Yang a, Jun Jin a, Xinhao Zhang b, Ruifa Jin b. Show more.
Ultrafine Pd NPs are in situ encapsulated in nitrogen-doped porous carbon. • The surface-covering carbon of Pd NPs can be removed upon H 2 O 2 treatment. • The obtained Pd/NPC-H 2 O 2 (1.3 nm) show the excellent selective hydrogenation. • The method could be a general approach to produce metals loaded porous carbon.
Among the various iridium-based electrocatalysts, ultrafine metallic Ir nanoparticles have gained considerable attention due to their high acidic oxygen …
Ultrafine Ru nanoparticles on nitrogen-doped CNT arrays for HER: A CVD-based protocol achieving microstructure design and strong catalyst-support interaction | …
The distribution of micropores and ultrafine pores facilitates effective connection and ion transport at the electrode–electrolyte interface, leading to an increase in the number of active sites in carbon materials and ultimately improving their specific capacitance. Nitrogen-containing groups also provided additional pseudocapacitance.
The evenly distributed ultrafine nanocrystals favor the exposure of active sites. PNCDs as the support facilitate charge transfer and protect the nanocrystals from aggregation during the HER process. Moreover, the strong coupling interactions between MC and M 2 C provide beneficial sites for both water dissociation and hydrogen …
Ultrafine particles (PM 0.1), which are present in the air in large numbers, pose a health risk.They generally enter the body through the lungs but translocate to essentially all organs. Compared to fine particles (PM 2.5), they cause more pulmonary inflammation and are retained longer in the lung.Their toxicity is increased with smaller …
Thus, much effort has been focused on this strategy of anchoring ultrafine metal particles on various supports [17], [18], [19]. Recent studies demonstrate that nitrogen atoms in carbon materials can serve as the coordination sites for transition cations [20], [21] and form a N-doped carbon-metal heterojunction [22].
Ultrafine TiO 2 nanocrystalline anchored on nitrogen-doped amorphous mesoporous hollow carbon nanospheres as advanced anode for lithium ion batteries. Author links open overlay panel Yongfeng Yuan a, Fei Chen a, Gaocan Cai a, Simin Yin a, Min Zhu a, Lina Wang b, Jinlin Yang a, Shaoyi Guo a. Show more.
Although long-term exposure to traffic-related air pollutants such as nitrogen dioxide has been linked to cardiovascular disease (CVD) mortality, little is known about the association between ultrafine particles (UFPs), defined as particles less than or equal to 0.1 μm in diameter, and incidence of major CVD events.
Ultrafine particles (UFPs) are aerosols with an aerodynamic diameter of 0.1 µm (100 nm) or less. There is a growing concern in the public health community about the contribution of UFPs to human ...
1. Introduction. As a green and sustainable energy carrier, hydrogen has shown great potential in practical applications because of its high energy content, renewability and zero-pollution discharge [1], [2].However, the shortcoming in safe and effective storage and release of hydrogen still prohibits the large-scale applications …
Confinement of ultrafine Co3O4 NPs in nitrogen-doped graphene-supported macroscopic microspheres were fabricated. • Ultrafine Co3O4 allowed a higher density of active sites to be exposed. • Oxygen vacancy and confined structure induced the interfacial mass/electron transfer. • Co3O4@N-rGO achieved ultra-fast SMX …
Herein, ultrafine Co–Mo 2 C nanocrystals confined in nitrogen-doped carbon nanosheets (Co–Mo 2 C/NCS) are meticulously designed and serve as a functional interlayer. Density functional theory (DFT) calculations confirm that the conductivity and adsorption ability of Co–Mo 2 C is enhanced, owing to the modulated electronic structure …
Herein, ultrafine MoOx-doped Ni nanoparticles (~3.0 nm) were anchored on g-C3N4@glucose-derived nitrogen-doped carbon nanosheets via a phosphate-mediated method. The strong adsorption of phosphate-mediated nitrogen-doped carbon nanosheets (PNCS) for metal ions is a key factor for the preparation of ultrasmall Ni nanoparticles …
Then, Co 1−x S, Co 1−x S/C (ultrafine Co 1−x S nanoparticles embedded in the shells of the nitrogen-doped porous carbon hollow nanosphere), and Co 1−x S@C (Co 1−x S nanoparticles entirely covered by an external amorphous carbon layer) were selectively fabricated via direct calcination or PPy coating & calcination of the obtained ...
The ultrafine NbN nanoparticles and nitrogen-doped carbons guarantee efficient polysulfides trapping and fast redox reaction kinetics even with a high sulfur content of 75 wt%. In addition, porous carbon nanosheets and NbN nanoparticles provide more active sites for Li 2 S nucleation and serve as a second host for the reuse of sulfur.
The supported ultrafine Cu 2 O offered excellent performance and stability for the visible light driven photocatalytic reduction of N 2 to NH 3 (the Cu 2 O‐mass‐normalized rate as high as 4.10 mmol g −1 h −1 at λ>400 nm), with the origin of the high activity being long‐lived photoexcited electrons in trap states, an abundance of ...
The preparation of catalysts is schematically illustrated in Fig. 1.The coffee grounds (purchased from Taobao) were soaked in abundant deionized water for 12 h, and then filtrated, washed and dried at 120 °C for 24 h. 4.0 g of the washed coffee grounds, 1.0 g of carbon black (VXC72R, Cabot, 254 m 2 g −1) and 0.5 g of iron chloride hexahydrate …