Publications by authors named "Jin-Ku Liu"
Stepwise-Induced Synthesis and Excellent Corrosion Protection of Ce/Eu Codoped ZnO Solid Solution Materials.
ACS Appl Mater Interfaces
September 2024
Article Synopsis
- A new synthesis method for creating a layered zinc oxide solid solution was developed using coprecipitation, allowing for control over the material's microscopic structure without the need for templates.
- The resulting codoped zinc oxide incorporates cerium and europium, enhancing both its ability to protect against corrosion and its luminescent properties.
- Testing showed that a specific formulation of this material significantly improved corrosion resistance compared to traditional systems, highlighting its potential for advanced anticorrosion applications.
Synthesis and Mechanism of Co/Sr Codoped Magnetic Lanthanum Cuprate with Excellent Corrosion Resistance.
ACS Appl Mater Interfaces
November 2023
Article Synopsis
- The unique structure of perovskite-like compounds creates open spaces in crystals that enhance their functionality, allowing for the accommodation of active oxygen which aids in corrosion prevention.
- Doping magnetic lanthanum cuprate with Co and Sr significantly improved its corrosion resistance compared to traditional materials, achieving 215.2% better than LaCuO and 566.7% compared to epoxy resin.
- The combination of high concentration doping, oxygen vacancy defects, and the special interlayer structure of these compounds helps trap active oxygen and form a protective layer that improves the durability of coatings in corrosive environments.
Zinc molybdate (ZMO) is a safe and effective grafting material for anticorrosion. Herein, we reported the synthesis of ZMO/-BN with the labyrinth of capillary pores owing to the growth of ZMO on flake hexagonal boron nitride (-BN) using the hydrothermal method. The special morphological structure provided a tortuous path for aggressive species to the steel substrate, which extended and blocked the transmission of aggressive species, enhancing the physical corrosion barrier performance.
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- * Researchers successfully designed specific WO MVMOs using a method that controlled the reduction process, highlighting the importance of oxygen vacancies in enhancing corrosion protection.
- * The optimal performance of these materials was achieved through a combination of photocathodic protection, passivation, and reductive protection, resulting in a significant increase in resistance compared to traditional coatings.
The heterojunction constructed by tungsten oxide and zinc oxide materials can improve the problem of easy deactivation of electrons, which is a new and effective strategy for realizing anticorrosion. Here, the ZnO/WO heterojunction modified by oxygen vacancies (OVs) serving as the photoelectric conversion center was not consumed to provide continuous light-induced protection for steel, and the impedance value was increased by 185.35% compared to that of epoxy resin after 72 h of corrosion.
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- * The C-ZnO SS exhibited the highest impedance, indicating its superior anticorrosion capabilities, while a proposed mechanism highlighted the importance of photoelectron flow suppression and self-cohering due to doping.
- * Experimental results confirmed the effectiveness of these materials in corrosion inhibition and established a positive link between their anticorrosion and photocatalytic performances, underscoring their potential industrial applications.
Enhanced photoelectric properties by the coordinating role of doping and modification.
Phys Chem Chem Phys
February 2016
Article Synopsis
- This research employs a dual technique design, combining doping and surface modification to enhance the properties of Co(2+) doped Ag-ZnO nanocomposites (CAZ NCs) through a mass production method known as combustion.
- High-Resolution Transmission Electron Microscopy (HRTEM) analysis reveals that the Co(2+) doping and the modified Ag nanoparticles significantly affect the structural orientation of the nanocomposites.
- The improved photoelectric properties of CAZ NCs under visible light are linked to better light absorption and reduced recombination of electron-hole pairs, offering insights for future materials development.
Article Synopsis
- The Ag@Ag2MoO4-AgBr composite was created using an in-situ anion-exchange method and involves coating silver nanoparticles through photodeposition.
- This composite enhances electron transition and separates electron-hole pairs more effectively due to the presence of silver nanoparticles as electron traps.
- It significantly improves photocatalytic activity for degrading organic dyes, showing greater efficiency compared to pure AgBr and Ag2MoO4, capable of degrading specific dyes like Rhodamin B in just 7 minutes.
Mass preparation and novel visible light photocatalytic activity of C and Ag Co-modified ZnO nanocrystals.
J Colloid Interface Sci
December 2015
Article Synopsis
- A new combustion method was created to produce carbon and silver co-modified zinc oxide (ZnO) nanocomposites (NCs) to improve their effectiveness as photocatalysts.
- The study found that adding silver significantly boosts the photocatalytic activity, with an optimal Ag to Zn ratio of 2%, leading to a 150% increase in degradation rates under visible light compared to carbon-ZnO NCs, and a staggering 1233.3% improvement over pure ZnO.
- The presence of silver resulted in small particles (about 10 nm) on the surface of carbon-ZnO NCs, suggesting a collaboration between silver and carbon that enhances the photocatalytic performance when exposed to visible light.
Article Synopsis
- Researchers prepared hydroxyapatite (HAP) nanoparticles of various sizes using a hydrothermal method and characterized them through methods like X-ray diffraction and electron microscopy.
- Mung bean sprouts served as the experimental model to assess the cytotoxicity of these nanoparticles, measuring hypocotyl lengths instead of typical assays.
- The study found that increased concentrations of HAP nanoparticles inhibited the growth of mung bean sprouts, particularly noting that 5mg/mL caused the most significant reduction in hypocotyl length, suggesting that the toxicity was related to nanoparticle concentration and structure affecting cell apoptosis.
Preparation and enhanced catalyst effect of assembled hydroxylapatite microsphere chains.
J Nanosci Nanotechnol
March 2012
Article Synopsis
- - The study describes the creation of large hydroxyapatite (HAP) microsphere chains (20-35 micrometers long) using a simple template method and analyzes them through various characterization techniques like XRD and SEM.
- - The researchers explored the mechanism behind the formation of these HAP microspheres and used them to create a composite catalyst with TiO2, resulting in an increased bandgap for the TiO2 material.
- - The HAP/TiO2 composite catalyst showed a 150% faster degradation rate for methyl orange compared to regular TiO2 nanoparticles, and it was easier to separate and recycle the composite after use.
Article Synopsis
- - A new fluorescence probe has been created using thioglycolic acid (TA) within hydroxyapatite nanoribbon spherulites, resulting in a 1.5-3.3 times stronger fluorescence compared to traditional probes without TA.
- - Upon exposure to cadmium ions, the original nanoribbon structure of the probe transforms into flake structures, indicating changes in the probe's physical composition.
- - This research examines how the assembly of nanostructures influences metal-enhanced fluorescence, providing insights into detecting cadmium ions in alcohol solutions.