نتایج جستجو برای: layered double hydroxides ldhs

تعداد نتایج: 272292  

Journal: :Catalysts 2023

Ultrafine layered double hydroxides (LDHs) have abundant hydroxy groups at their edge sites, serving as anchor sites for metal NPs. Furthermore, transformation of ultrafine LDHs into mixed oxides (MMOs) generates oxygen vacancies, which are advantageous O2 activation during Au-catalyzed CO oxidation. We used Ni-Ti with low crystallinity or MMOs supported on SiO2 onto Au NPs were deposited by de...

Journal: :Journal of Asian Ceramic Societies 2023

Electrocatalytic CO2 reduction reaction (CO2RR) has attracted considerable attention as a technology to recycle carbon dioxide (CO2) into raw materials for chemicals using renewable energies. In this study, the electrocatalytic CO2RR activity of Zn-Al layered double hydroxides (LDHs) was studied. LDHs loaded sheets were prepared, and RR performed CO2-saturated KHCO3 electrolyte confirm catalyti...

Journal: :Environmental Engineering Research 2022

Layered double hydroxides (LDHs) are regarded as potential adsorbents for water treatment from a wide range of pollutants. However, there only few studies concerning application LDHs elimination microorganisms aquatic systems. In this work, experiments were conducted to investigate the efficiency commercial synthetic hydrotalcite Mg6Al2(CO3)(OH)16∙4H2O an adsorbent purification fecal indicator ...

Journal: :Journal of Rare Earths 2022

While the versatile composition of layered double hydroxides (LDHs) allows introduction almost any polyvalent cation in their structure, exchangeable negatively charged ions intercalated between plates increase vast range functionalities. Here we report on preparation and optical properties pillared Eu3+-substituted ZnAl LDHs by aliphatic dicarboxylates: ?OOC?(CH2)n–2?COO?. The basal distance t...

2016
Ke Fan Hong Chen Yongfei Ji Hui Huang Per Martin Claesson Quentin Daniel Bertrand Philippe Håkan Rensmo Fusheng Li Yi Luo Licheng Sun

Highly active and low-cost electrocatalysts for water oxidation are required due to the demands on sustainable solar fuels; however, developing highly efficient catalysts to meet industrial requirements remains a challenge. Herein, we report a monolayer of nickel-vanadium-layered double hydroxide that shows a current density of 27 mA cm(-2) (57 mA cm(-2) after ohmic-drop correction) at an overp...

Four diverse chlorides layered double hydroxides with diverse ratios, i.e. Mg-Al (3:1), Mg-Al (4:1), Zn-Al (4:1), and Zn-Al (3:1) LDHs, were prepared to evaluate their efficiency and selectivity towards nitrate removal from aquatic solutions. A batch experiment was done at the initial nitrate concentration of 5-1000 mg/L, pH 5 to 12, and contact time of 5-180 min. Isotherms of nitrate adsorptio...

Journal: :Processes 2021

Fluoride excess in water represents an environmental issue and a risk for human health since it can cause several diseases, such as fluorosis, osteoporosis, damage of the nervous system. Layered double hydroxides (LDHs) be exploited to remove this contaminant from by taking advantage their high ion-exchange capability. LDHs are generally mixed with polluted form powders, which then problem unea...

Journal: :Journal of The Electrochemical Society 2022

Aqueous Zn-ion batteries (ZIBs) have garnered significant interest in recent years due to their potential applications large-scale stationary energy storage. Early ZIBs research has primarily focused on searching for better cathodes and understanding cathodic Zn 2+ storage mechanisms. Only very recently shifted anode. Here this study, we report insights into the interactions between anode aqueo...

2014
Min Wang Wen-Jing Bao Jiong Wang Kang Wang Jing-Juan Xu Hong-Yuan Chen Xing-Hua Xia

3D hierarchical layer double hydroxides (LDHs) have attracted extensive interest due to their unique electronic and catalytic properties. Unfortunately, the existing preparation methods require high temperature or toxic organic compounds, which limits the applications of the 3D hierarchical LDHs in biocatalysis and biomedicine. Herein, we present a green strategy to synthesize "Desert Rose Ston...

2015
Jayoda Perera Manjula Weerasekera Nilwala Kottegoda

BACKGROUND During the past few decades, the occurrence of superficial fungal infections has rapidly increased. As the fungal infections take longer time to get cured, concepts such as designing drugs with extended persistence and controlled release have gained attention. In this context, nanotechnology has been identified as the latest technological revolution which has opened up new pathways f...

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