Review
Chemistry, Physical
Zhihui Wang, Wei Zhang, Cuiqing Li, Chen Zhang
Summary: Layered double hydroxides (LDHs) are widely used in various fields due to their unique structural advantages, and are capable of synthesizing metal catalysts with high metal dispersion, tunable acid-base properties, and strong metal-support interaction. LDH-derived materials show great potential as catalysts in hydrogenation and hydrogenolysis reactions, as indicated by the rapid development in this field with over 200 papers published in the past five years. This review comprehensively discusses the applications of LDH-derived materials as catalysts in different hydrogenation and hydrogenolysis reactions, showcasing their extraordinary potentials in these reactions and their future significance.
Article
Chemistry, Inorganic & Nuclear
Luofu Min, Jingying Duan, Lu Liu, Sheng Ge, Wen Zhang, Yuxin Wang
Summary: The novel method involves the reaction of magnesium oxide with aluminate ions in a strongly alkaline environment to synthesize MgAl-LDH, which has no impurity phases, high crystallinity, high specific surface area, and a narrow particle size distribution. The obtained LDH can be directly used as a Bronsted base catalyst and ion exchanger, without the need for a time-consuming aging process, showing strong scalability.
DALTON TRANSACTIONS
(2022)
Review
Chemistry, Applied
Kailin Wang, Tianqi Wang, Quazi Arif Islam, Yan Wu
Summary: Semiconductor photocatalysis for splitting water or reducing CO2 to produce H-2 or hydrocarbon fuels is a promising approach. Layered double hydroxides (LDHs) have unique structures but face limitations in application, leading scholars to explore ways to enhance their energy conversion efficiency.
CHINESE JOURNAL OF CATALYSIS
(2021)
Review
Chemistry, Multidisciplinary
V. K. Ameena Shirin, Renu Sankar, Asha P. Johnson, H. V. Gangadharappa, K. Pramod
Summary: Layered double hydroxides (LDHs) are nanomaterials with high surface-to-volume ratio, suitable for drug delivery applications. Interlayered drugs can be released in a sustained manner, reducing drug administration frequency.
JOURNAL OF CONTROLLED RELEASE
(2021)
Article
Chemistry, Physical
Tomohito Sudare, Mizuki Ueda, Takuro Yamaguchi, Mongkol Tipplook, Hideki Tanaka, Fumitaka Hayashi, Katsuya Teshima
Summary: In layered materials, the stacking sequence can affect ion transport and storage properties. However, the relationship between the stacking sequence and anion transport and storage properties is not well understood. In this study, we found that the stacking sequence influences the nitrate-storage properties of layered double hydroxides. The 2H1 polytype has a higher nitrate-storage capacity compared to the 3R1 polytype. The difference in nitrate-storage capacity is attributed to the soft nature of the 2H1 polytype, which allows minimal lattice changes, while the rigid lattice of the 3R1 sequence requires a larger lattice expansion, hindering ion storage.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Energy & Fuels
Zahra Taherian, Vahid Shahed Gharahshiran, Alireza Khataee, Yasin Orooji
Summary: The study utilized freeze-dried promoted-Ni/MgAl catalysts to address catalyst deactivation by coking in methane dry reforming. By enhancing the basicity of the catalyst, the promotion led to higher activity and stability of the catalyst in conversion of methane, with the Sr-promoted Ni/MgAl catalyst demonstrating the best performance.
Review
Environmental Sciences
Sonika Kumari, Varruchi Sharma, Savita Soni, Ajay Sharma, Abhinay Thakur, Satish Kumar, Kuldeep Dhama, Anil Kumar Sharma, Shashi Kant Bhatia
Summary: Layered double hydroxides (LDHs) are a class of materials with unique structures and properties that have a wide range of applications. LDHs can be synthesized in a cost-effective and environmentally friendly manner through aqueous synthetic pathways, and they have the advantages of easy modification and controlled release. LDHs have great potential in drug delivery, as they can stabilize drugs, enhance solubility, and control release. Additionally, LDHs have good biocompatibility and cellular uptake. This study demonstrates the applications of LDHs and their hybrids/composites in drug, cosmeceutical, and gene delivery systems.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Physical
Ziying Chen, Chengyu Chen, Xuewen Luo, Junhong Liu, Zhujian Huang
Summary: This study investigated the flocculation of nanoplastics (NPs) on layered double hydroxides (LDHs) in water through heteroaggregation analysis under various conditions, revealing the interaction mechanisms and interface reactions. The results showed that the optimal conditions for NP removal were a Mg:Al ratio of 3:1 and a calcination temperature of 300 degrees C. The interparticle forces were dominated by electrostatic repulsion at short distances, transitioning to van der Waals and electrostatic attractions at longer distances, leading to particle attachment.
APPLIED CLAY SCIENCE
(2021)
Article
Engineering, Environmental
Liquan Chu, Chaojie Zhang, Jing Yu, Xu Sun, Xuefei Zhou, Yalie Zhang
Summary: In this study, Mg/Fe(Al)-calcined layered double hydroxides (Mg/Fe(Al)-CLDHs) with different Mg/Fe(Al) ratios were synthesized to remove nitrate from interflow in the purple soil region of Sichuan Province, China. The 3:1 Mg/Fe CLDH exhibited the best adsorption performance, with a maximum adsorption capacity of 73.36 mg/g. The adsorption process was found to be a physical-chemical multilayer process, with the pseudo-second-order model and Freundlich model being the best-fitting kinetic and isothermal models, respectively.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Xuezhen Zhu, Xueyan Li, Haisheng Tao, Maoguo Li
Summary: In this study, Co2Al/Co2Mn nanocomposites with excellent electrochemical performance were successfully prepared on nickel foam, reducing internal resistance and enhancing charge transport capabilities. The nanocomposites showed significantly improved performance in hybrid supercapacitors, with excellent cycle stability and potential for practical applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Chemical
A. I. Boulahbal, L. Santamaria, A. Azizi, M. Boutahala, S. A. Korili, A. Gil
Summary: This study reports for the first time the use of saline slag, a hazardous waste generated during aluminum recycling, as an aluminum source for the synthesis of CuAl layered double hydroxides (LDH). The synthesis pH was found to have a significant effect on the nature of secondary phases, as well as the structure and morphology of the samples.
MINERALS ENGINEERING
(2023)
Article
Engineering, Environmental
Ziying Chen, Zhujian Huang, Junhong Liu, Enya Wu, Qian Zheng, Lihua Cui
Summary: Nanoplastics, an emerging pollutant, have attracted global attention. The use of Mg/Al-layered double hydroxides (LDH) for flocculation shows potential for removing PSNP. The study reveals that LDH can capture PSNP under different pH conditions, with removal efficiencies over 90.0%.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Mingtao Zhang, Feng Wang, Yifei Long, Linwen Yu, Changhui Yang, Mengyuan Wen, Xiaolan Yu, Yi Tian, Min Zhao
Summary: This study used calcined Mg/Al layered double hydroxide (CLDH) to improve the carbonation resistance of alkali-activated slag (AAS) mortars. The results showed that CLDH reconstructed the structure of AAS mortars, formed a buffer system to absorb CO2, and increased the density of the mortars.
APPLIED CLAY SCIENCE
(2022)
Article
Chemistry, Physical
Elisa Boccalon, Gianluca Viscusi, Andrea Sorrentino, Fabio Marmottini, Morena Nocchetti, Giuliana Gorrasi
Summary: solvent-free synthesis was employed to prepare HNT@LDH composite materials, with the optimal composite containing 20% LDH determined through experimentation. Salicylate was incorporated into the composite through intercalation into the layered double hydroxide, where different intercalation methods affected the release of salicylate.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Nanoscience & Nanotechnology
Lin Guo, Yufei Zhang, Junjie Zheng, Linqing Shang, Yujia Shi, Qi Wu, Xiaoxiao Liu, Yingming Wang, Longqing Shi, Qian Shao
Summary: ZnNiCr-layered double hydroxides (LDHs) were synthesized using the microwave hydrothermal method for Cr(VI) removal, exhibiting a high adsorption capacity at pH=2 compared to ZnCr-LDHs and NiCr-LDHs. The materials have potential application prospects for the removal of Cr(VI) in wastewater.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Madeeha Riaz, Manahil Najam, Hina Imtiaz, Farooq Bashir, Tousif Hussain
Summary: This study focuses on the structural and biological analysis of Zn-Cu based biodegradable alloys for orthopedic applications. The results indicate that the alloys have good electrical conductivity and biocompatibility, with potential for promoting bone growth and healing process. Additionally, the alloys exhibit a low corrosion rate and improved corrosion resistance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Rijo Rajeev, Sk Safikul Islam, Anitha Varghese, Gurumurthy Hegde, Suryasarathi Bose
Summary: In this study, a facile and selective electrochemical sensor was developed for the sensing of guanosine. The sensor utilized a unique porous structure and ordered framework, enabling linear detection of guanosine concentration in the range of 0.123-720 μM under specific conditions.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Rafael V. M. Freire, Dominique Celeste de A. Dias, Jose Yago Rodrigues Silva, Dayane Kelly Dias do Nascimento Santos, Larissa T. Jesus, Ricardo O. Freire, Severino A. Junior
Summary: This study reports the extraction and isolation of euphol from nature, its adsorption in nanosized ZIF-8, and the efficacy of this system against cancer cells. Experimental and simulation results show that ZIF-8 can enhance the effectiveness of euphol against cancer cells and selectively target cancer cells.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Manal A. Awad, Awatif A. Hendi, Maha M. Almoneef, Maymunah Alwehaibi, Khalid M. Ortashi, Wadha Alenazi, Fatimah S. Alfaifi, Shareefa Alahmariye, Asma Alangery, Warda Ali Alghoubiri, Haia Aldosari
Summary: In this study, magnesium-doped zinc oxide nanoparticles were synthesized and characterized. The research findings show that magnesium doping can alter the crystal structure and optical properties of zinc oxide, while enhancing its dielectric constant.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
F. J. Willars-Rodriguez, I. R. Chaverz-Urbiola, M. A. Hernandez-Landaverde, A. Zavala-Franco, E. A. Chavez-Urbiola, P. Vorobiev, Yu V. Vorobiev
Summary: This study focuses on manganese doped CdS thin films synthesized by chemical bath deposition. The incorporation of Mn2+ cations in CdS was found to influence the crystalline structure, morphology, and optoelectronic properties. Doped thin films exhibited a uniform hexagonal structure, changed growth orientation, and showed scale-like and needle-like morphologies. The bandgap and rectification speed of Schottky diodes were modified by introducing manganese. This study suggests the potential for affordable high-speed optoelectronic devices.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Mehdi Javidi, Hooman Karimi Abadeh, Fatemeh Namazi, Hamid Reza Yazdanpanah, Narjes Shirvani Shiri
Summary: This study investigated the synergistic effect of temperature, solution velocity, and sulphuric acid concentration on the corrosion behavior of carbon steel using response surface methodology. The results showed that temperature affected anodic reactions, solution velocity influenced cathodic reactions, and acid concentration altered the corrosion mechanisms by changing the properties of the surface layer.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
R. Sakthivel, Thirumoorthy Kulandaivel, Kirankumar Venkatesan Savunthari, K. Mohanraj, Hans-Uwe Dahms, Aswin kumar Anbalagan, Manjunath Rangasamy, Kien-Voon Kong
Summary: In this study, saturated fatty acids were incorporated with silane to modify viscose fabric, resulting in superhydrophobic and superoleophilic properties. The modified fabric showed excellent separation efficiency for oil and organic solvents, with high absorption capacity. The modified fabric also exhibited durability and retained its properties in harsh conditions.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Wei Zhang, Hong Lei, Wenqing Liu, Zefang Zhang, Yi Chen, Xiaogang Hu, Xiangshan Ye
Summary: In this study, EDTA-grafted alumina composite abrasives were produced by a two-step process for the CMP of sapphire substrates. Experimental results showed that the modified abrasives exhibited better dispersion properties and significantly improved polishing efficiency, with higher material removal rates and lower surface roughness. The combination of chemical reaction and mechanical action enhanced the CMP performance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Shumaila Rafaqat, Bushra Perveen, Warda Raqba, Warda Imran, Arshad Hussain, Naeem Ali
Summary: This study developed a MnP-based biosensor for quantitative measurement of dye concentrations using electrochemical signals. The effects of two different dyes on MnP activity were investigated, with one dye showing inhibitory effects and the other dye having no effect. The study demonstrates the potential application of enzyme-based biosensors in dye detection and toxicological monitoring.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jinyan Shi, Oguzhan Yavuz Bayraktar, Baris Bayrak, Burak Bodur, Ali Oz, Gokhan Kaplan, Abdulkadir Cuneyt Aydin
Summary: The elemental composition of precursors is crucial for the performance development of geopolymers. The use of lime instead of metakaolin increases the fluidity and mechanical properties of geopolymers, while the addition of gypsum decreases them. Furthermore, higher lime content exacerbates the negative effect of gypsum.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aayush Gupta, Kaveri Ajravat, Loveleen K. Brar, O. P. Pandey, Pandey Rajagopalan
Summary: This study focuses on the performance of Mn3O4-ZnO composite material in wastewater treatment and energy storage applications, and presents a detailed comparative analysis. Results show that the composite material with equal concentrations of Mn3O4 and ZnO exhibits excellent photocatalytic activity and high capacitance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
V. Murugabalaji, Matruprasad Rout, Harsh Soni, Biranchi Narayan Sahoo
Summary: This study focuses on the corrosion characteristics of AA 7075 and AA 7075 based hybrid composite fabricated using stir casting and hot rolling techniques. The results show that the hybrid composite produced by hot cross rolling exhibits better corrosion resistance compared to the base metal. The addition of a small amount of graphite improves the bonding between the matrix and reinforcements, and the hot cross rolling enhances this bonding, leading to the formation of a strong passivation oxide layer and increased charge transfer resistance, thereby improving corrosion resistance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Fangkun Ning, Qinghao Shi, Shuping Kong, Weitao Jia, Lifeng Ma
Summary: The paper investigates a new method of rolling sheets with variable chamfering amounts in both the transversal and normal directions. The feasibility of the technological process was tested through simulation and compared with experimental results. Three important process parameters, temperature, stress, and flow velocity, were used to evaluate the effects on chamfering amount before determining the optimal angle. The spread formula for evaluating the shape quality of the plate after ECR was obtained through testing and theory.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aqeel Abbas, M. A. Hussein, Mohamed Javid
Summary: In this study, the AM60 magnesium alloy was processed using high-energy ball milling, and the results showed that different reinforcement agents had certain effects on particle size, crystallite size, lattice strain, and dislocation density.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
D. S. Mahmoud, E. M. Eldesouki, W. M. Abd El-Gawad
Summary: The development of flexible and lightweight microwave-absorbing materials has become a trendy topic. This study focuses on enhancing the microwave-absorbing performance of butadiene-acrylonitrile rubber (NBR) by incorporating novel reinforcing nanofillers. The results show that the NBR nanocomposite with a loading of 16 parts per hundred rubber (phr) of LiFe 20%/Si has the best microwave-absorbing performance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)