Article
Chemistry, Physical
Sadegh Askari, Davide Mariotti, Paul Brunet, Alexander Vahl, Jan Benedikt
Summary: The hybrid Zn-air and Zn-M battery with Fe-doped Ni double hydroxide nanoflakes and activated carbon cathode material shows superior performance, high energy density, exceptional energy conversion efficiency, and outstanding power density. It also enables high-rate charging due to rapid redox reaction kinetics and excellent cathode materials catalytic activity.
MATERIALS TODAY ENERGY
(2021)
Article
Engineering, Environmental
Zhisheng Wang, Yingfa Chen, Xiaotong Li, Guangzhi He, Jinzhu Ma, Hong He
Summary: The study achieved excellent activity and stability in catalytic ozone decomposition by preparing NiFe-LDH materials, which showed better performance compared to LDH materials containing other metal elements.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Linjia Jian, Juning Xie, Xueqing Hao, Baoe Li, Chunyong Liang, Feng Peng, Donghui Wang, Jin Xiao
Summary: Zn-Al LDH films were successfully constructed to enhance the anti-corrosion ability and biocompatibility of Zn substrates, providing new insights in surface modification of Zinc.
Article
Chemistry, Multidisciplinary
Bin Liu, Minxian Zhang, Jingling Yang, Mingshan Zhu
Summary: A manganese-based layered double hydroxide catalyst was developed for efficient ozone decomposition. The catalyst showed superior performance even at high relative humidity, surpassing other synthesized and commercial catalysts. The abundant surface hydroxyl groups and cyclic electron transfer between multivalent metal ions contributed to the stable ozone decomposition.
CHINESE CHEMICAL LETTERS
(2022)
Review
Chemistry, Inorganic & Nuclear
Haoyang Ye, Shiyu Liu, Deyou Yu, Xuerong Zhou, Lei Qin, Cui Lai, Fanzhi Qin, Mingming Zhang, Wenjing Chen, Wenfang Chen, Ling Xiang
Summary: This review summarizes the memory effect of LDHs, discussing various active sites on LDHs/LDOs and the importance of site structure. It introduces the modification methods of LDHs, summarizes the characteristics of memory effect, and analyzes the mechanism of chemical reaction, topology, thermodynamics, and microscopic mechanism of memory effect. The influencing factors and applications in environmental remediation are presented, along with the challenges and prospects of memory effect-based LDHs.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Jiaqing Zhao, Xiangdong Guo, Run Shi, Geoffrey I. N. Waterhouse, Xuerui Zhang, Qing Dai, Tierui Zhang
Summary: A series of alumina-supported NixFey nanoalloy catalysts were synthesized and used for photothermal synergistic dry reforming of methane (DRM). The Ni3Fe1 nanoalloy catalyst showed a significantly higher syngas production rate under photothermal conditions compared to dark conditions. The localized surface plasmon resonance of the Ni3Fe1 nanoalloy greatly enhanced the activation of methane, leading to a remarkable reduction in reaction temperature. The nanoalloy-based photothermal synergistic DRM demonstrated sunlight-driven feasibility and continuous operational stability for 20 hours.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Bernardo Raimundo, Daisuke Kino, Nijika Kitgawa, Yasuaki Tokudome, Carla D. Nunes
Summary: In this study, low-cost CoAl LDH materials were demonstrated to be highly effective catalysts for the hydrogenation of aromatic nitro compounds to amino compounds under mild conditions, thanks to their high activity and unique physical and chemical properties. The as-synthesized CoAl LDH catalysts exhibited high conversion rates and selectivity for 7 different aromatic nitro compounds with competing functional groups, using sodium borohydride at room temperature and 1 atm. The reaction was completed in a short time, ranging from 5 to 150 min, and the catalyst showed excellent stability with over 8 cycles of reuse without significant loss of activity.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Physical
Yuwei Xin, Ya Liu, Hong-yu Zhang, Yuecheng Zhang, Jiquan Zhao
Summary: The Fe embedded MgAl layered double hydroxide (MgAlFe0.4-LDH) catalyst exhibited excellent performance in epoxidation reactions, achieving high selectivity and stability. Embedment of Fe into MgAl-LDH significantly increased the catalyst activity and expanded the surface area and pore volume.
Article
Chemistry, Physical
Sonchai Intachai, Teruyuki Nakato, Nithima Khaorapapong
Summary: The study investigated the decoration of zinc oxide nanorods on the layered structure of low carbonate NiAl-layered double hydroxide using hydrothermal method followed by calcination. It was found that the addition of zinc oxide enhanced the photocatalytic degradation of methyl orange, and the band gap energy value of the products was dependent on the amount of zinc oxide.
APPLIED CLAY SCIENCE
(2021)
Review
Chemistry, Multidisciplinary
Kui Fan, Yining Sun, Pengcheng Xu, Jian Guo, Zhenhua Li, Mingfei Shao
Summary: Single-atom catalysts (SACs) have gained significant attention for their excellent catalytic performance. The selection of suitable substrates plays a crucial role in the fabrication and application of SACs. Layered double hydroxides (LDHs) have emerged as promising substrates for SACs due to their adjustable supramolecular structures. This review comprehensively summarizes the research on SACs based on LDHs, including preparation strategies and applications in various catalytic processes.
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
(2022)
Article
Engineering, Environmental
Meiqing Chen, Zhiyan Huang, Shuling Liang, Feike Pei, Zhang Lin, Zhi Dang, Pingxiao Wu
Summary: This study found that MgMnLDH has excellent remediation functionality for heavy metals-antibiotics pollution, efficiently immobilizing Co2+ and Cu2+ and enhancing SMX degradation. MgMnLDH-Co-4 exhibited superior degradation performance due to intense Co/Mn synergism and abundant oxygen vacancies accelerating electron transfer.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Qin Liu, Puyi Zhang, Ze Wang, Shujuan Liu, Xiaoning Ren, Ke Qian, Xin Chen, Jingying Li, Jia Yao, Yi Gan, Lin Lv, Houzhao Wan, Hao Wang
Summary: In this study, NiCo layered double hydroxides (LDHs) clay materials with a low crystallinity multilayer nanosheet structure were prepared as cathode materials for alkaline Ni-Zn batteries using glucose intercalation. The expanded LDH layer spacing through glucose intercalation reduced interlayer peeling and collapse, accelerated interlayer diffusion of ions, and improved electron transport performance. The NiCo LDH-G1.5 electrode material exhibited high specific capacity and capacity retention rate at a high current density.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Jinzhu Ma, Yingfa Chen, Guangzhi He, Hong He
Summary: LDH catalysts solve the deactivation of oxygen vacancy by utilizing surface hydroxyls as active sites and achieving the redox cycle through an H-transfer mechanism in a 2D confined environment. This leads to their extraordinary activity and resistance compared to metal oxide catalyst systems.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Xin-Ying Xiang, Jiu-Lin Zhou, Qin Wang, Yin-Hua Zhu, Zhen-Tao Zhang, Tian-Cheng Ye, Ji-Lei Wang, Qiao-Ling Chen, Yan Xu
Summary: In this study, two metal-oxygen clusters, [Co3Zn(OH)6(SO4)]·4H2O (1) and [Ni3Zn(OH)6(SO4)]·4H2O (2), were designed as photocatalysts. Compound 1 exhibited outstanding photocatalytic activity and weak antiferromagnetic coupling.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Jing Hu, Chenguang Yuan, Liping Zhi, Huamin Zhang, Zhizhang Yuan, Xianfeng Li
Summary: This research demonstrates that by constructing a layered double hydroxide membrane, long-life and high-performance aqueous zinc-based flow batteries can be achieved. The membrane not only improves the energy efficiency and cycling stability of the battery but also enables uniform zinc deposition, enhancing the areal capacity of the battery.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Analytical
Diogo B. Goncalves, Carla S. P. Santos, Teresa Pinho, Rafael Queiros, Pedro D. Vaz, Mark Bloore, Paolo Satta, Zoltan Kovacs, Susana Casal, Isabel Hoffmann
Summary: Fish fraud is a challenging issue in the industry that can be addressed using accurate and cost-effective tools like near infrared reflectance spectroscopy. This study successfully predicted the nutritional values of fish and discriminated between different sources and conditions, demonstrating the potential of NIRS as a suitable strategy for addressing fish fraud and quality control.
JOURNAL OF AOAC INTERNATIONAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Sonia R. Leandro, Ines J. Marques, Ruben S. Torres, Tiago A. Fernandes, Pedro D. Vaz, Carla D. Nunes
Summary: A 2:1 Co/Al layered double hydroxide material was synthesized with Au nanoparticles immobilized for catalytic performance in the reduction of nitroaromatic compounds and rhodamine dyes. While the Au-containing catalyst showed the best activity, the LDH with Cl- closely followed in performance and exhibited higher stability in the presence of amine products. These results suggest the potential of first-row metal-based catalysts in addressing environmental concerns and achieving efficient processes.
INORGANICA CHIMICA ACTA
(2021)
Article
Chemistry, Physical
Cristina I. Fernandes, Pedro D. Vaz, Carla D. Nunes
Summary: Iron oxide magnetic nanoparticles of different sizes were successfully synthesized and functionalized with an organic phosphine ligand coordinated to a Mo-based organometallic core. The resulting nano-hybrid materials exhibited excellent catalytic performance in olefin epoxidation reactions, showing high activity, selectivity, and recyclability.
Article
Chemistry, Physical
Mariela M. Nolasco, Paulo J. A. Ribeiro-Claro, Pedro D. Vaz
Summary: The structure and dynamics of crystalline 4-(dimethylamino) benzaldehyde (4DMAB) were studied using INS spectroscopy combined with periodic DFT calculations. The experimental and calculated spectra showed excellent agreement, allowing for reliable assignment of INS bands. The simulated spectrum accurately described the external phonon modes and low-frequency molecular vibrations. Crystal field splitting was observed for modes assigned to the dimethylamino group. The torsional motion of methyl groups was analyzed, and specific methyl groups were identified based on four individual bands. The torsional frequencies of these methyl groups fell within a range similar to that observed for methyl groups bonded to unsaturated carbon atoms. The hybridization state of the X atom in X-CH3 seemed to be crucial in determining the methyl torsional frequency.
Article
Physics, Multidisciplinary
Mariela M. Nolasco, Sonia N. Pedro, Carla Vilela, Pedro D. Vaz, Paulo Ribeiro-Claro, Svemir Rudic, Stewart F. Parker, Carmen S. R. Freire, Mara G. Freire, Armando J. D. Silvestre
Summary: This work investigates the effect of water on the physicochemical properties of deep eutectic solvents using inelastic neutron scattering spectroscopy. The results show that quenching samples in liquid nitrogen can retain the liquid phase morphology of DES at low temperatures. The preference of water molecules to bind to chloride anion is observed in the three studied systems, but they also present distinct features related to their unique properties and structure at the molecular level.
FRONTIERS IN PHYSICS
(2022)
Article
Chemistry, Physical
Rita N. Sales, Carla D. Nunes
Summary: Desulfurization is crucial for eliminating sulfur compounds from fuel feedstocks, and MoO3 nanoparticles synthesized through hydrothermal method have shown to be efficient catalysts for oxidative desulfurization. The catalyst demonstrated enhanced activity and selectivity in the desulfurization process, with temperature and solvent influencing the conversion rate. The catalytic performance of MoO3 nanomaterial was comparable or superior to other catalysts reported in literature.
Article
Biochemistry & Molecular Biology
Mariela M. Nolasco, Mariana Matos Coimbra, Stewart F. Parker, Pedro D. Vaz, Paulo J. A. Ribeiro-Claro
Summary: By comparing experimental and simulated spectra, the structural dynamics of chloromethanes were accurately evaluated, allowing for confident assignment of vibrational features including fundamental modes, lattice and combination modes. The overall excellent agreement between experimental and calculated spectra, particularly in describing the overtone sequence for CHCl3, was achieved.
Article
Chemistry, Multidisciplinary
Mariela M. Nolasco, Leonor C. Rodrigues, Catarina F. Araujo, Mariana M. Coimbra, Paulo Ribeiro-Claro, Pedro D. Vaz, Svemir Rudic, Armando J. D. Silvestre, Chaima Bouyahya, Mustapha Majdoub, Andreia F. Sousa
Summary: This work investigates the conformational preferences and structure-property correlations of poly(butylene 2,5-furandicarboxylate) (PBF), shedding light on the dominant structural motifs in the amorphous and crystalline regions. The study utilizes computational spectroscopic techniques and density functional theory calculations to identify the most favorable conformations and proposes a new crystal structure that better describes the polymer's macroscopic properties.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Mariana M. Coimbra, Ines Martins, Sofia M. Bruno, Pedro D. Vaz, Paulo J. A. Ribeiro-Claro, Svemir Rudic, Mariela M. Nolasco
Summary: The unique properties of Egyptian blue, a cuprorivaite pigment, were studied using computational and experimental methods. A reliable model of the crystal was obtained, allowing for the evaluation of its lattice dynamics and properties. Inelastic neutron scattering and infrared spectroscopies provided information on the chemical surfaces of the pigment, confirming the simulation results.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Physical
Bernardo Raimundo, Daisuke Kino, Nijika Kitgawa, Yasuaki Tokudome, Carla D. Nunes
Summary: In this study, low-cost CoAl LDH materials were demonstrated to be highly effective catalysts for the hydrogenation of aromatic nitro compounds to amino compounds under mild conditions, thanks to their high activity and unique physical and chemical properties. The as-synthesized CoAl LDH catalysts exhibited high conversion rates and selectivity for 7 different aromatic nitro compounds with competing functional groups, using sodium borohydride at room temperature and 1 atm. The reaction was completed in a short time, ranging from 5 to 150 min, and the catalyst showed excellent stability with over 8 cycles of reuse without significant loss of activity.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Ines J. Marques, Pedro D. Vaz, Ana V. Girao, Mariela M. Nolasco, Carla D. Nunes
Summary: Silica-coated iron oxide and silica nanoparticles were prepared and derivatized with a europium complex to yield magneto-fluorescent and fluorescent nanomaterials. The fluorescence was enhanced by the anchored europium complex and maintained in cellular medium. These nanomaterials have potential applications as biosensors and in imaging.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Mario R. Felicio, Pedro D. Vaz, Carla D. Nunes, Mariela M. Nolasco
Summary: In this study, novel Eu and Tb lanthanide complexes and their binuclear counterparts with Cu as the secondary metal were prepared and investigated for their potential applications as probes and cancer inhibitors. The results showed that the bimetallic complexes were more effective in promoting cancer cell death and sequestering Cu from the tumoral environment. Structural characterization and spectroscopic analysis were performed to reveal the properties of these complexes. Experimental data confirmed that the mononuclear complexes exhibited fluorescence and could sequester Cu ions. Cell viability tests demonstrated that these complexes induced cell death in breast and lung adenocarcinoma cancer cell lines. Overall, these complexes have significant potential as bioprobes and anticancer agents.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Rita N. Sales, Samantha K. Callear, Pedro D. Vaz, Carla D. Nunes
Summary: The study found that polar and apolar aprotic solvents can modulate olefin oxidation reactions in different ways. Acetonitrile significantly hindered reaction rates, while toluene did not. Neutron diffraction experiments confirmed the kinetic data and proposed a model based on substrate-solvent crosstalk through hydrogen bonding.
CHEMISTRY-SWITZERLAND
(2021)
Article
Chemistry, Physical
Nadine J. Kanik, Artur Kuligiewicz, Jeffrey T. Cullen
Summary: This study examined the effects of different pre-treatments on the structural H-isotope composition of clay minerals. The results showed that different pre-treatments had varied impacts on different clay minerals, and the choice of pre-treatment should be based on the specific properties and mineralogy of the samples.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Lorenzo Lisuzzo, Giuseppe Cavallaro, Stefana Milioto, Giuseppe Lazzara
Summary: This study proposes Pickering emulsions based on wax and halloysite clay nanotubes for coating silk sutures to increase their loading capacity towards eosin. The presence of halloysite/wax microspheres on the surface of silk sutures has also been explored for controlled release of hydrophobic drugs. The influence of the coating on the thermal and mechanical properties of the sutures has been studied using various techniques. In conclusion, the wax/halloysite Pickering emulsions can successfully generate hydrophobic microdomains on the surface of silk sutures, leading to enhanced flexibility and improved loading capacity towards eosin.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Bruna F. Alves, Rita C. P. Nunes, Luiz C. Bertolino, Elizabete F. Lucas
Summary: Operational problems in the oil industry caused by the precipitation of paraffins can be prevented by using polymeric additives. This article evaluates the use of polymeric nanocomposites as pour point reducers in different types of crude oil and finds that they are more efficient than pure poly(ethylene-covinyl acetate) (EVA) in reducing the pour point. The nanocomposites also modify the wax crystals and reduce the viscosity of the oil samples.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
K. A. Daniels, C. C. Graham, A. C. Wiseall, J. F. Harrington, P. Sellin
Summary: Geological storage with clay buffer is widely preferred for removing hazardous radioactive waste. The impact of fluid salinity and void space on the swelling behavior of barrier bentonites was examined through experiments. The findings suggest that clay swelling is suppressed at higher salinities, which affects the void-filling process.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
N. Werling, A. Kuligiewicz, A. Steudel, R. Schuhmann, F. Dehn, K. Emmerich
Summary: Thermal treatment of clay minerals can be used to produce building materials and environmentally friendly binders. This process involves dehydration, dehydroxylation, breakdown of structure, and recrystallization of high temperature phases. Rehydration and rehydroxylation are important factors to consider for geopolymers and SCM.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Xuan Wang, Hao Ding, Zhuoqun Xu, Jianmeng Zhang, Yanbin Yao
Summary: Rutile nano-TiO2 was loaded onto the surface of sericite to prepare sericite-rutile composite particles, which were then modified with HDTMS and sprayed onto the substrates to form sericite-rutile/HDTMS composite coatings with UV shielding and superhydrophobic self-cleaning properties. The coating exhibited good UV shielding rate and remained superhydrophobic after UV irradiation. The hierarchical structure of the sericite-rutile composite and the low surface energy of HDTMS contributed to the superhydrophobicity and UV shielding effect of the coating.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Kailang Sun, Taojun Zhang, Jie Zhou, Yonghong Liu, Minfeng Zeng, Zhen Yang, Ruokun Feng, Xiaorong Ren, Peng Zhang, Baoyi Wang, Xingzhong Cao
Summary: Chitosan-Pd0 nano particles encapsulated in Al, Co-pillared montmorillonite nanocomposites were successfully synthesized using a facile one-pot heat treatment method. The Al, Co pillaring effectively expanded the surface area and generated numerous mesopores in the interlayer space of the MMt. The resultant nanocomposite exhibited similar high comprehensive catalytic performances as the one prepared by the regular divided-multistep method. The encapsulation of CS chains and doping of Co in the Al pillaring also contributed to the improved catalytic performance.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Nathalie Fagel, Isabel Israde-Alcantara, Reza Safaierad, Marttiina Rantala, Sabine Schmidt, Gilles Lepoint, Pierre Pellenard, Nadine Mattielli, Sarah Metcalfe
Summary: Environmental conditions significantly influence clay minerals, and studying clay sediments in tropical lakes can provide valuable insights into past environmental conditions. In this study, multiproxy records from sediment cores of three crater lakes in central Mexico were analyzed. The results showed that disordered kaolinite, formed through hydrolysis and hydrothermal alteration, was the predominant mineral in the sediments. The abundance of kaolinite varied in relation to organic carbon and organic matter-related elements, and showed opposite trends with lithogenic elements. Geochemical data suggested that the increase in kaolinite abundance is linked to the formation of organo-mineral aggregates and lake level changes in closed basins.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
M. J. Martin-Alfonso, A. Mejia, F. J. Martinez-Boza, P. Partal
Summary: The drilling industry is facing new challenges to develop eco-friendlier drilling fluids. Organic modified sepiolite dispersed in oil can be an excellent additive with suitable rheological properties. This study investigated the effect of alkyl ammonium modifiers on the microstructure and rheological properties of sepiolite-vegetable oil dispersions under high-temperature and high-pressure conditions.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Weiquan Zhan, Siyuan Yang, Shenxu Bao, Liuyi Ren, Cheng Liu
Summary: The interaction between talc and the depressor CMC was investigated through molecular dynamics simulation and density functional theory calculation. It was found that CMC showed stronger adsorption on the edge plane of talc due to enhanced interactions with polar groups and water molecules. The study also revealed specific interactions between H atoms in CMC and O atoms in the edge plane, as well as between O atoms in CMC and Si, Mg atoms in the edge plane. Hydration shells on the basal and edge planes of talc were examined to explain the phenomenon.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Pierre Dramou, Yiyang Sun, Xu Ni, Fangqi Wang, Hua He
Summary: In this study, a magnetic nanocomposite was prepared and used for the separation of rutin from real samples through magnetic solid phase extraction (MSPE). The nanocomposite exhibited high specific surface area, chemical and thermal stability, water solubility, and easy separation in aqueous solution. Characterization and experiments confirmed the successful synthesis and efficient enrichment ability of the nanocomposite.
APPLIED CLAY SCIENCE
(2024)
