Article
Materials Science, Multidisciplinary
Zhemin Zou, Jie Wang, Jun Qu, Panfei Dong, Zhigao Xu
Summary: In this study, Zn-Al LDH precursor was successfully synthesized and demonstrated promising adsorption capacity for rare earth elements (REEs) recovery. The adsorbed REEs on Zn-Al LDH were hard to be desorbed, making it a potentially valuable adsorbent for practical application in REEs recovery.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Shirin Shabani, Mohammad Dinari
Summary: A Cu-Ca-Al-based layered double hydroxide was successfully prepared and modified with itaconic acid as a biodegradable organic molecule for the removal of Congo red dye from aqueous media. Both the unmodified and modified LDH showed excellent adsorption capacities, surpassing most adsorbents reported in previous studies.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Engineering, Chemical
Yuliu Li, Riccardo Narducci, Alessandra Varone, Saulius Kaciulis, Eleonora Bolli, Roberto Pizzoferrato
Summary: By directly growing Zn-Al LDH films on aluminum foams, the method successfully removed fluoride ions from water, achieving a maximum absorption efficiency of approximately 70% and reducing the fluoride concentration from 3 mg/L to below 1.1 mg/L. This simple and efficient method effectively addressed the issue of difficult separation of LDH powders.
Article
Chemistry, Multidisciplinary
Abhinandan Singha Roy, Sreejarani Kesavan Pillai, Suprakas Sinha Ray
Summary: Nitrate-loaded Zn/Al, Mg/Al, and Mg-Zn/Al layered double hydroxides (LDHs) were synthesized for slow-release of nitrate ions. Sodium alginate was used to encapsulate Mg/Al LDH to further slow down the release. The slow release properties of LDHs were evaluated in tap water, soil solution, and plant growth experiments. The LDHs were found to supply adequate nitrate to plants while maintaining availability over extended periods, and also demonstrated the ability to increase soil pH.
Article
Chemistry, Physical
Peng Wang, Tong Song, Cong Xie, Ping Yang
Summary: In this study, Co-Al layered double hydroxide/TiO2 heterostructures were synthesized and showed excellent removal efficiency for Cr(VI) under full solar spectrum irradiation. The optimized loading and interface structure of the composite sample provided high stability and adsorption ability.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Environmental
Hamid Khoshalhan Davoudli, Solmaz Saadat, Mansour Rahsepar, Fatemeh Azadi
Summary: The different morphologies of Zn-Al LDHs exhibit varied adsorption behaviors towards humic acid in synthetic solutions and natural water, indicating different adsorption mechanisms involved. The comparison shows that FLDHs have superior adsorption capability for removing HA from synthetic solutions, while MLDHs have higher adsorption capacity for natural organic matters in natural water samples containing co-existing ions. The pseudo-second-order kinetics model and Longmuir isotherm model can adequately interpret the HA adsorption process for the studied adsorbents, which also exhibit good regeneration and recycling abilities.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Environmental
Carina Luengo, Nicolas A. Lopez, Cinthia P. Ramos, Marcelo J. Avena
Summary: The mechanisms of arsenate adsorption onto Fe-LDH were studied, revealing that Fe-LDH had excellent adsorption capacity for arsenate and could meet the recommended limit. Despite its dissolution at low pH, Fe-LDH showed high adsorption efficiency, low cost, and green and sustainable characteristics.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Physical
Morgana Rosset, Liliana Amaral Feris, Oscar W. Perez-Lopez
Summary: Incorporating Mg or Zn into NiAl-LDH for reconstruction using a memory effect improved the catalytic activity and stability in the dry reforming of Biogas. The washing step significantly affected LDH reconstruction, with different metals influencing the properties of the materials. Ni-Zn alloy formation in Zn-reconstructed catalysts led to the best performance in methane and carbon dioxide conversion with a H-2/CO ratio of approximately 2.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Yi-Xing Zhu, Guang-Ling Song, Peng-Peng Wu, Ju-Feng Huang, Da-Jiang Zheng
Summary: A novel method was developed to fabricate a protective superhydrophobic LDH film on a Zn-Al alloyed surface of AZ31 Mg alloy. The film provided corrosion and mechanical protection for the substrate magnesium alloy, while additional modification allowed for changing the surface properties to super-hydrophobicity. Experimentally verified long-term anti-corrosion performance, super-hydrophobicity, wear resistance, chemical stability, and adhesion strength of the modified LDH film.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Xuhui Wang, Jinxia Xu, Yinbing Song
Summary: A novel core@shell Linde type A zeolite@Mg-Al layered double hydroxides (zeolite-LTA@Mg-Al LDH) was synthesized by in-situ co-precipitation method and its chloride adsorption in simulated concrete pore solution was studied. The results showed that the zeolite-LTA@Mg-Al LDH has excellent chloride adsorption capacity, which follows Langmuir model and Pseudosecond-order kinetic.
APPLIED CLAY SCIENCE
(2021)
Article
Engineering, Environmental
Javad Imanipoor, Mohammad Hossein Kazemi, Mohsen Mohammadi
Summary: Zn-Al LDH/ZIF-8 nanocomposite was synthesized and used as an effective pollutant adsorbent. Various analyses were conducted to characterize the nanocomposite, and batch experiments were implemented to investigate the adsorption process. The experimental results showed that the nanocomposite had a high saturation adsorption capacity and good stability after multiple adsorption-desorption cycles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Nafisur Rahman, Abdur Raheem
Summary: Graphene oxide/Mg-Zn-Al layered double hydroxide (GMZA) showed excellent adsorption capacity for doxycycline, and the adsorption process involved electrostatic interaction, p-p interaction, and H-bonding. The material could be reused for multiple cycles.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Review
Chemistry, Multidisciplinary
Mohammed Benjelloun, Youssef Miyah, Gulsun Akdemir Evrendilek, Farid Zerrouq, Sanae Lairini
Summary: The increased environmental awareness and tighter regulatory standards have led various industries to seek appropriate wastewater treatment technologies for colored wastewater. This review provides detailed information on dyes, their classification, the environmental impact of water pollution, and the use of adsorption technology as a sustainable solution for dye removal. Studies evaluating the effectiveness of different adsorbents, particularly low-cost ones, in removing dyes from aqueous solutions are highlighted.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Engineering, Environmental
Haihua Xu, Sidi Zhu, Mingzhu Xia, Fengyun Wang, Xuehai Ju
Summary: A novel adsorbent, 3D hierarchical CS@PANI@ZnAl-LDH composite, was successfully fabricated and applied for naproxen removal from aqueous solutions, showing good adsorption performance and stability, providing a feasible approach for wastewater treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Hamid Ziyat, Souad Elmzioui, Mohammed Naciri Bennani, Jamal Houssaini, Safae Allaoui, Said Arhzaf
Summary: The study investigates the effectiveness of hydrotalcite as an adsorbent for nitrate and nitrite ions retention, showing that hydrotalcite (HT3) has good adsorption capacity without pH adjustment. The Langmuir model provides a better fit to experimental data for nitrates and nitrites adsorption. Adsorption capacity increases with decreasing mass of the adsorbent and increasing initial concentration of ions.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
