Results 31 to 40 of about 6,958,099 (301)

Efficient Green Synthesis of Hollow Silica Nanoparticles

open access: yesNantong Daxue xuebao. Ziran kexue ban, 2021
The traditional acid-base etching method to prepare hollow silica nanoparticles often causes safety and environmental problems. Thus, an efficient green method to synthesize the hollow silica nanoparticles is proposed in this paper.
YANG Ruilu; SHI Jian; LI Chunjian
doaj   +1 more source

Silica hollow core microstructured fibers for beam delivery in industrial and medical applications [PDF]

open access: yes, 2015
The focus of this review is our recent work to develop microstructured hollow core fibers for two applications where the flexible delivery of a single mode beam is desired.
Fei Yu   +29 more
core   +1 more source

Hollow core photonic bandgap fibers for telecommunications: opportunities and potential issues [PDF]

open access: yes, 2012
We discuss the potential advantages that hollow core photonic bandgap fibers may ultimately have over conventional all solid fibers and review the state-of-the-art, fundamental physical limits and the many technological challenges to be ...
Petrovich, M.N.   +6 more
core   +2 more sources

Synthesis of porous carbon hollow particles maintaining their structure using hyper-cross-linked Poly(St-DVB) hollow particles [PDF]

open access: yes, 2020
Porous carbon hollow particles (PCHPs) have many useful features such as a high specific surface area, large pore volume, and the presence of nanovoids, giving them potential for use in catalyst carriers, supercapacitors, and Li-ion batteries.
Yamamoto, Tetsuya, Kawai, Yusuke
core   +1 more source

Performance of Na-ion Supercapacitors Under Non-ambient Conditions—From Temperature to Magnetic Field Dependent Variation in Specific Capacitance

open access: yesFrontiers in Materials, 2019
Single phase NaFePO4 can works as economically viable cathode material for Na-systems similar to LiFePO4–a material that led to the commercialization of Li-ion based energy systems.
Sudipta Biswas   +2 more
doaj   +1 more source

Hollow Structured Transition Metal Phosphates and Their Applications

open access: yesThe Chemical Record, 2022
AbstractHollow nanostructures of transition metal phosphate are of immense interest in the existing and evolving areas of technology, due to their high surface area, presence of hollow void, and easy tuning of compositions and dimensions. Emerging synthesis methods such as template‐free methods, hard‐templating, and soft‐templating are discussed in ...
Samira Munkaila   +4 more
openaire   +2 more sources

Preparation of MOF Derived Zn-Co-C Composite as Anode for Lithium-ion Batteries

open access: yesInternational Journal of Electrochemical Science, 2020
This paper focuses on the preparation of hollow mixed metal oxide materials by means of mixed metal atom doping. In this paper, the hollow core-shell structure Zn-Co-MOFs material was prepared by hydrothermal method, calcined into Zn-Co-C material, and ...
Mingyuan Ren   +3 more
doaj   +1 more source

Effect of Geometrical Parameters on the Mechanical Performance of Bamboo-Inspired Gradient Hollow-Strut Octet Lattice Structure Fabricated by Additive Manufacturing

open access: yesMicromachines
Hollow-strut metal lattice structures are currently attracting extensive attention due to their excellent mechanical performance. Inspired by the node structure of bamboo, this study aimed to investigate the mechanical performance of the gradient hollow ...
Junxian Ge   +8 more
doaj   +1 more source

CoNi Alloys Encapsulated in N-Doped Carbon Nanotubes for Stabilizing Oxygen Electrocatalysis in Zinc–Air Battery

open access: yesNanomaterials, 2023
Alloy-based catalysts with high corrosion resistance and less self-aggregation are essential for oxygen reduction/evolution reactions (ORR/OER). Here, via an in situ growth strategy, NiCo alloy-inserted nitrogen-doped carbon nanotubes were assembled on a
Yao Nie   +9 more
doaj   +1 more source

Study on High Activity and Outstanding Stability of Hollow-NiPt@SiO2 Core–Shell Structure Catalyst for DRM Reaction

open access: yesFrontiers in Chemistry, 2020
A neoteric hollow-NiPt@SiO2 core–shell structure catalyst with 7-nm-sized hollow NiPt alloy nanoparticle (NP) packaged by SiO2 shell was prepared by a classic Stober method.
Guangying Wang   +4 more
doaj   +1 more source

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