Article
Multidisciplinary Sciences
Minchao Liu, Cheng Shang, Tiancong Zhao, Hongyue Yu, Yufang Kou, Zirui Lv, Mengmeng Hou, Fan Zhang, Qiaowei Li, Dongyuan Zhao, Xiaomin Li
Summary: Porous anisotropic nanohybrids have attracted attention because of their unique properties including high surface area, tunable pore structures, and controllable compositions. Here, authors report a selective occupation strategy to achieve site-specific anisotropic growth of amorphous mesoporous subunits on crystalline MOFs.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Makoto Ozaki, Takahito Imai, Takaaki Tsuruoka, Shungo Sakashita, Kin-ya Tomizaki, Kenji Usui
Summary: Biomineralization allows for control over crystal structure, size, and morphology of inorganic compounds, but random precipitation hinders the construction of complex nanostructures. The elemental composition of a gold-titania nanocomposite photocatalyst is controlled through two inorganic precipitating peptides bound to DNA.
COMMUNICATIONS CHEMISTRY
(2021)
Article
Chemistry, Physical
Gang Liu, Yuquan Qi, Jiashuai Li, Yifa Chen, Yilan Chen, Zhen Li, Guodong Shen, Delong Ma, Yunfeng Li, Xianqiang Huang
Summary: Four transition-metal lacunary polyoxometalates (TM-LPOMs) were used to fabricate ultra-low density foams, which were then used as catalysts for the efficient synthesis of sulfenamide rubber additives under mild conditions. The obtained additives showed superior rubber plastic properties and can be used in industrial rubber molding processes.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Siyuan Zheng, Kai Wang, Guangsheng Luo
Summary: This study proposes an electrolytic approach to synthesize thiuram disulfides based on a microfluidic reactor, achieving high yields and electron utilization efficiency while avoiding waste salt generation and over-oxidation of reaction products.
Article
Chemistry, Physical
Yue Dong, Lu Wang, Neng Xia, Yu Wang, Shijie Wang, Zhengxin Yang, Dongdong Jin, Xingzhou Du, Edwin Yu, Chengfeng Pan, Bi-Feng Liu, Li Zhang
Summary: A fast and reliable strategy for constructing programmable graphene oxide (GO)/wax actuators has been presented in this study. By printing designable wax patterns composed of oriented wax fibrils onto GO paper, the anisotropic behavior of fabricated GO/wax actuators can be controlled to achieve diversity, complexity, and spatial freedom of their structural changes. The actuators exhibit excellent actuating performance stimulated by infrared light, humidity, and heat, and have been used in various applications such as humidity-driven shape-adaptation gripping, heat-driven autonomous crawling robot, and light-driven steerable robot. More versatile applications can be expected by rationally designing corresponding actuators.
Article
Chemistry, Multidisciplinary
Nouha El Amri, Kevin Roger
Summary: In this study, a nanoemulsion of alkanethiols with an ethoxylated surfactant was used to prevent shape reorganization and arrest reaction kinetics of anisotropic nanoparticles. The optimum thiol concentration for full coverage of silver surface atoms in the synthesis of silver nanoplates was determined based on particle dimensions. The formation of nanoparticles was effectively stopped within milliseconds using a tandem rapid mixers scheme in a continuous flow setup, allowing ex situ monitoring of the reaction.
Article
Chemistry, Physical
Xiaoyan Huang, Yanling Lu, Guojiang Mao, Shiheng Yin, Bei Long, Guo-Jun Deng, Atif Ali, Ting Song
Summary: In this study, cyclotriphosphazene was used as a skeleton to connect pyrimidine rings and form porous organic polymers (OBCPs) for the coupling reaction of benzyl mercaptans to disulfide compounds. The OBCP samples demonstrated fast carrier mobility, low oxidation potential, and negative reduction potential. Additionally, OBCPs showed excellent photocatalytic reduction of CO2 to produce CH4.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Agriculture, Multidisciplinary
Chengkang Li, Soren B. Nielsen, Kasper Engholm-Keller, Marianne N. Lund
Summary: This study investigated the oxidation of different whey protein systems during heat treatment. The results showed that oxidation increased with higher temperatures but decreased in systems with higher complexity. Cysteine residues were found to be most prone to oxidation, and rearranged disulfide bonds provided physical protection against oxidation.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Chemistry, Analytical
Lin Sun, Jingli Yan, Yilin Liu, Ruipeng Wang, Yongqiang Cheng
Summary: 5-hydroxymethylcytosine (5hmC) is closely correlated with various diseases. This study proposes a chemical oxidation-free and site-specific 5hmC assay, which has high selectivity and sensitivity. The method can simultaneously measure the content and percentage of 5hmC.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Materials Science, Multidisciplinary
Bo Yin, Chunrui Liu, Xiaofeng Li, Xiaowen Dong, Di Chen, Qiang Li, Dawei Chen, Ziping Wang
Summary: Exploring the relationship between A-site atoms and the structure of ruthenium pyrochlore oxides (A(2)Ru(2)O(7)) is crucial for designing efficient electrocatalysts for acidic water oxidation. This study manipulated A-site atoms by introducing lanthanide elements and found that they have little effect on the electronic valence of the Ru and O ions, but do impact the structure of A(2)Ru(2)O(7). The catalyst activity and stability increased gradually as the A-site ion radius decreased, with Ho2Ru2O7 demonstrating the highest stability and lowest overpotential.
Article
Chemistry, Organic
Navin Yadav, Soumen Payra, Jarugu Narasimha Moorthy
Summary: A metal-free and green iodine-catalyzed protocol is described for the synthesis of unsymmetrical thiosulfonates. The reactions occur at room temperature and provide good-to-excellent yields of the desired products.
ASIAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Optics
Nicola Pellizzi, Alfredo Mazzulla, Pasquale Pagliusi, Gabriella Cipparrone
Summary: The development of efficient and cost-effective micromachines is a challenge for applied and fundamental science. The rotational dynamics of core-shell particles with specific architecture when irradiated by light has been studied, providing important insights for optimizing the design of light controlled micro-objects.
PHOTONICS RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Weijia Gong, Guanghai Bai, Jinna Mei, Xitao Wang, Jinshan Li
Summary: In this study, the effects of different processing sequences on the B-phase precipitates and corrosion properties of Zr-1Nb alloys were investigated. The results demonstrate that alloys manufactured by the sequence of hot working and B-quenching exhibit improved corrosion resistance.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Polymer Science
Jorge Ayarza, Zhao Wang, Jun Wang, Aaron P. Esser-Kahn
Summary: The article introduces a new method for forming organogels from polymers by piezo-electrochemical synthesis of disulfide bonds, which can be achieved through mechanical agitation. The research shows that this method can not only synthesize various organogels, but also enable the chemical recycling of polymers with a reducing agent.
Article
Multidisciplinary Sciences
Yunjun Pan, Guobang Li, Ruxin Liu, Jiawei Guo, Yunjie Liu, Mingyu Liu, Xingwang Zhang, Luping Chi, Kangwei Xu, Ruibo Wu, Yuzhong Zhang, Yuezhong Li, Xiang Gao, Shengying Li
Summary: Cytochrome P450 enzymes play crucial roles in the biosynthesis of macrolide antibiotics. However, the 20 proteinogenic amino acids may not always meet the requirements of site-directed/random mutagenesis and rational protein design. In this study, the authors employed semi-rational non-canonical amino acid mutagenesis to improve the enzyme's activity and gain mechanistic insights.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Zhaohui Wang, Yong-Hyeok Lee, Sang-Woo Kim, Ji-Young Seo, Sang-Young Lee, Leif Nyholm
Summary: Recent research shows that cellulose can be used to create stable electrochemical energy storage devices with high energy and power densities. Attention should be paid to the properties of cellulose, and it is suitable for large-scale production.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Le Anh Ma, Andrew J. Naylor, Leif Nyholm, Reza Younesi
Summary: This study investigates the impact of electrolyte chemistry on the dissolution of the solid electrolyte interphase (SEI) in sodium-ion batteries, using beta-alumina as a sodium-conductive membrane to prevent crosstalk. The research found that the solubility of SEI species in the electrolyte can reach up to 30% after a 50-hour pause, and saturation of the electrolyte with these SEI species can counteract aging due to SEI dissolution.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Yu-Kai Huang, Ruijun Pan, David Rehnlund, Zhaohui Wang, Leif Nyholm
Summary: Research shows that introducing a short (e.g., 1 s long) potentiostatic pulse can improve the performance of lithium-metal electrodes by facilitating the first oxidation step to occur more homogeneously on the lithium surface. This surface activation step creates numerous preferential lithium nucleation sites, aiding in achieving a uniform lithium deposition step. Experimental results indicate that this straightforward pulse approach can significantly increase the lifetime of lithium-metal electrodes.
ADVANCED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Aishwarya Srinath, Kristina von Fieandt, Rebecka Lindblad, Stefan Fritze, Markus Korvela, Jean Petersson, Erik Lewin, Leif Nyholm
Summary: The study found that the corrosion resistance of AlCrNbYZrN films is not determined by the nitrogen content, but by the nitrogen-induced porosity. Samples with higher nitrogen content are denser and have better corrosion resistance, while samples with lower nitrogen content are more porous and have poorer corrosion resistance.
Article
Electrochemistry
Eirini-Maria Paschalidou, Rebecka Lindblad, Leon Zendejas Medina, Dennis Karlsson, Ulf Jansson, Leif Nyholm
Summary: The corrosion resistances of CoCrFeMnNi magnetron-sputtered thin films with different carbon concentrations were investigated in acidic environments. The results showed that the electrochemical behavior of the films, particularly in the chromium transpassive region, was significantly influenced by the carbon concentration and experimental conditions. At high potentials, the carbon-containing films exhibited better corrosion resistance in hydrochloric acid than in sulfuric acid, attributed to a slower carbon oxidation rate in hydrochloric acid, facilitating the formation of a manganese-rich oxide layer.
ELECTROCHIMICA ACTA
(2022)
Review
Chemistry, Multidisciplinary
David Rehnlund, Zhaohui Wang, Leif Nyholm
Summary: This review focuses on diffusion-controlled capacity losses in rechargeable lithium-based batteries due to concentration gradients, which have been largely unrecognized. Evidence for diffusion-controlled capacity losses is presented and discussed, along with approaches to identify and solve these problems. Future research directions in this important area are proposed.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Shizhao Xiong, Leif Nyholm, Aleksandar Matic, Chao Zhang
Summary: This article discusses the electrodeposition mechanism of lithium (Li) metal anode and its importance for rechargeable Li-metal batteries. The electrodeposition of Li is controlled by thermodynamic and kinetic factors, and the inconsistent scale of the process poses a significant challenge for experiments and simulations. The article introduces different approaches to address this challenge and explores the possible synergies between them.
MATERIALS TODAY ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Maciej Kaplan, Aishwarya Srinath, Lars Riekehr, Leif Nyholm, Bjorgvin Hjorvarsson, Stefan Fritze
Summary: Amorphous TaNiSiC and TaNiC films were prepared using combinatorial magnetron sputtering, and their properties were analyzed. The results showed that the addition of Si reduced the elemental segregation in TaNiSiC, resulting in improved hardness, corrosion resistance, and thermal stability of the films.
MATERIALS & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
Tatiana Koriukina, Antonia Kotronia, Joseph Halim, Maria Hahlin, Johanna Rosen, Kristina Edstrom, Leif Nyholm
Summary: The study investigates the use of Ti3C2Tx MXene flakes as negative lithium-ion battery electrodes and aims to identify the redox reactions responsible for their reversible and irreversible capacities. The results demonstrate that the reversible capacity is mainly derived from redox reactions involving the titanium species on the surfaces of MXene flakes, while the titanium in the core of the flakes remains inactive. Exposing the MXene flakes to water and air prior to manufacturing the electrodes results in significantly higher capacities due to a change in the oxidation state of titanium at the surfaces of the flakes. The significant irreversible capacity observed in the first cycles is attributed to the presence of residual water in the electrodes.
Article
Chemistry, Multidisciplinary
Yu-Kai Huang, Heyin Chen, Leif Nyholm
Summary: The nucleation of lithium directly on the copper current collector in anode-free lithium-metal batteries is limited by poor control and diffusion of lithium into the copper substrate via grain boundaries. Prelithiation of the copper surface improves the nucleation process by saturating the surface with lithium, reducing the influence of lithium diffusion. This leads to more homogeneous lithium nucleation, especially when a short potentiostatic nucleation pulse is applied.
Article
Chemistry, Multidisciplinary
Le Anh Ma, Alexander Buckel, Andreas Hofmann, Leif Nyholm, Reza Younesi
Summary: Knowledge about capacity losses related to the solid electrolyte interphase (SEI) in sodium-ion batteries (SIBs) is still limited. This study investigates capacity losses caused by changes in the SEI layer under different electrolyte conditions, and finds that the amount of capacity lost depends on the interplay between the electrolyte chemistry and the thickness and stability of the SEI layer.
Article
Materials Science, Multidisciplinary
Leon Zendejas Medina, Marcus Vinicius Tavares de Costa, Olivier Donzel-Gargand, Leif Nyholm, E. Kristofer Gamstedt, Ulf Jansson
Summary: In this paper, the formation of metal/carbon nanocomposites based on complex high entropy alloys (HEAs) was studied. The effect of the average carbon affinity on phase formation was investigated. The results showed the presence of free carbon in the coatings at certain carbon concentrations. However, the rapid quenching during deposition resulted in amorphous coatings consisting of either a single metallic phase or a mixture of metallic phase and sp2- and sp3-hybridized carbon.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Lars Olow Simon Colbin, Charles Aram Hall, Ahmed S. Etman, Alexander Buckel, Leif Nyholm, Reza Younesi
Summary: This article investigates the impact of different electrolyte solutions on the anodic dissolution or passivation of aluminum in sodium-ion batteries. It is found that the type of electrolyte is critical for the presence of anodic dissolution, while the solvent alters the dissolution process.
Article
Engineering, Chemical
Leif Nyholm, Tove Ericson, Ahmed S. Etman
Summary: Anodic dissolution of the aluminum positive electrode current collector limits performance in high-voltage Li-ion batteries. It is most likely caused by etching of the Al2O3 passive layer by protons released during the oxidation of the solvent.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Yu-Kai Huang, Jean Pettersson, Leif Nyholm
Summary: Although graphite-based composite electrodes are commonly used in lithium-ion batteries for their good cycle performance, their long-time cycling stability still needs improvement. The diffusion-controlled lithium-trapping effect, which accounts for around 30% of the total capacity loss during long-time cycling, is shown to be an additional and largely unrecognized aging mechanism in graphite-based electrodes. It is caused by incomplete delithiation due to diffusion-controlled redistribution of intercalated lithium in graphite. However, constant-voltage delithiation steps can increase the delithiation efficiency and decrease the influence of the lithium-trapping effect.
ADVANCED ENERGY AND SUSTAINABILITY RESEARCH
(2022)
