Article
Nanoscience & Nanotechnology
Lucas Luciano Cullari, Shani Ligati Schleifer, David Kogan, Gennady Ziskind, Oren Regev
Summary: Carbon allotropes of different dimensionality, including 1D carbon nanotubes, 2D graphene nanoplatelets, and 3D graphite, possess high thermal conductivity. However, preparing aqueous dispersions of these materials is challenging due to their strong van der Waals attraction. In this work, the dispersion of carbon allotropes is achieved by using sepiolite, a fiberlike clay. The effective medium approach models the thermal conductivity of the fillers accurately.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Joao Paulo Vita Damasceno, Lauro Tatsuo Kubota
Summary: This review focuses on the application of established concepts from Colloidal Science to dispersions of graphene and carbon nanotubes, discussing strategies to overcome limitations such as van der Waals interactions. By highlighting the importance of understanding and controlling colloidal interactions, the review showcases the development of environmentally friendly carbon-based colloids and improvements in dispersion systems for two-dimensional materials.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Shweta, Vinamrita Singh, Kaushal Kumar, Sridharbabu Yarramaneni, Arun Kumar
Summary: Ultrathin molybdenum disulfide (MoS2) nanosheets were successfully prepared via grinding-assisted liquid phase exfoliation. The processing parameters were optimized for efficient and scalable production of MoS2 nanosheets. The synthesized MoS2 exhibited a bandgap above 2.0 eV and a lower difference between in-plane and out-of-plane vibration modes compared to the bulk sample. Grinding-assisted sonication in NMP solvent was found to be the most efficient method for producing low-dimensional nanosheets. The well dispersed MoS2 nanoflakes can be blended with other nanomaterials for optoelectronic applications.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Sepidar Sayyar, Jo Law, Agnieszka Golda, Gregory Ryder, Gordon Wallace
Summary: This article introduces an environmentally friendly method that utilizes ball-milling of expanded graphite in the presence of the vitamin B-2 derivative Riboflavin Mononucleotide (FMN) to form highly dispersible, low defect graphene. FMN not only facilitates the exfoliation of graphite to graphene, but also ensures colloidal stability of the graphene sheets in aqueous dispersions through functionalization.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Takuma Kamibe, Yusuke Asakura, Yoshiyuki Sugahara
Summary: Lateral size fractionation of niobate nanosheets derived from K4Nb6O17•3H2O was achieved by phase transfer using tetra-n-dodecylammonium bromide as a reagent in a water/2-butanone biphasic system. Smaller nanosheets were preferentially extracted into the 2-butanone phase, and extraction cycles led to an increase in their lateral sizes.
Article
Chemistry, Physical
Elsy El Hayek, Sambhu Radhakrishnan, Gina Vanbutsele, Sreeprasanth Pulinthanathu Sree, Mickael Rivallan, Emmanuel Soyer, Christophe Bouchy, Eric Breynaert, Johan Martens, Celine Chizallet, Bogdan Harbuzaru
Summary: This study successfully transformed the unstable silicogermanate into a stable aluminosilicogermanate using post-synthetic isomorphic substitution. The resulting material showed promising performance in the catalytic transformation of bulky molecules, suggesting potential applications for stable derivatives of silicogermanate zeolites.
JOURNAL OF CATALYSIS
(2022)
Article
Acoustics
L. Kuterasinski, U. Filek, M. Gackowski, M. Zimowska, M. Ruggiero-Mikolajczyk, P. J. Jodlowski
Summary: The ultrasonic-assisted desilication technique was shown to be an attractive and efficient method for preparing hierarchical zeolites with MFI structure type, which exhibited high selectivity and catalytic activity for the dehydration of ethanol. The use of ultrasounds during desilication procedure led to higher extraction of silicon and aluminum, resulting in elevated mesoporosity and enhanced catalytic properties in the prepared samples.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Siliu Lyu, Chenxi Guo, Jianing Wang, Zhongjian Li, Bin Yang, Lecheng Lei, Liping Wang, Jianping Xiao, Tao Zhang, Yang Hou
Summary: This study presents a strategy to enhance the OER activity of poorly conductive MOFs by confining them between graphene multilayers. The results show that this strategy significantly reduces the overpotential and retains the activity, and can be applied to other MOFs of different structures to enhance their electrocatalytic activities.
NATURE COMMUNICATIONS
(2022)
Article
Engineering, Multidisciplinary
Pei Zuo, Lan Jiang, Xin Li, MengYao Tian, YongJiu Yuan, WeiNa Han, Le Ma, LiFei Hu, ZhiCong He, Fang Li
Summary: In this work, MoS2 core-shell nanoparticles were prepared by liquid-phase processing of bulk MoS2 using a femtosecond laser. The core of the nanoparticles had incomplete and weak crystallinity, while the shell had high crystallinity. The formation mechanism involved laser ablation and light exfoliation. The core-shell nanoparticles exhibited high chemical activity for chemical catalysis.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Kyohei Noda, Yasuhiko Igarashi, Hiroaki Imai, Yuya Oaki
Summary: Yield-prediction models assisted by machine learning were used to efficiently exfoliate soft layered materials stacked through van der Waals interactions. High-yield exfoliation of graphite and layered organic polymers was achieved under guided conditions in a limited number of experiments.
CHEMICAL COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Chunna Zhang, Yanyan Huang, Haibo Zhao, Hongbin Zhang, Zhaoqi Ye, Peng Liu, Yahong Zhang, Yi Tang
Summary: The study demonstrates a facile and efficient method for liquid exfoliation and surface functionalization of 2D zeolite nanosheets using ethanolamine. The resulting oligolayer MWW zeolite shows well-dispersed nanosheets with maintained framework and grafted molecules, beneficial for applications in fields such as cultural heritage preservation. The interaction between nanosheets and ethanolamine is crucial for achieving both surface functionalization and high dispersion, presenting a promising approach for designing zeolite-based composite materials with interdisciplinary applications.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
M. Victoria Bracamonte, Lisandro F. Venosta, W. Gustavo Fano, Silvia E. Jacobo, Paula G. Bercoff
Summary: This work aims to obtain and characterize a composite material using environmentally friendly matrix and green processes, comparing properties through different preparation methods. Chemical synthesis followed by heat-treatment results in improved crystallinity and magnetization, with a small amount of Ni NPs enhancing microwave absorption properties of graphite, extending its application to lower frequencies.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Chemistry, Physical
A. Raza, J. Z. Hassan, M. Ikram, S. Naz, A. Haider, A. Ul-Hamid, I. Shahzadi, J. Haider, S. Goumri-Said, M. B. Kanoun, S. Ali
Summary: In this study, nanocomposites of MoS2 and BN doped with cobalt were synthesized to enhance their catalytic and antibacterial abilities for environmental health applications. Characterization techniques and Density Functional Theory were utilized to evaluate the chemical, structural, electrical, morphological, and optical features of the synthesized products. The Co-doped MoS2 and BN nanocomposites showed promising performance in catalytic degradation of methylene blue and antibacterial activity against both G(+) and G(-) strains, with potential as inhibitors of specific enzymes from S. aureus and E. coli.
SURFACES AND INTERFACES
(2021)
Article
Physics, Applied
Taku Goto, Kazuto Hatakeyama, Tsuyohito Ito, Kenichi Inoue, Yukiya Hakuta, Yoshiki Shimizu, Kazuo Terashima
Summary: A chemical-free method has been developed to prepare large h-BN nanosheets (BNNSs) without reducing their sheet size. This method, called cavitation-bubble plasma, utilizes plasma with cavitation bubbles in water to exfoliate h-BN and significantly improves the exfoliation yield.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Review
Chemistry, Multidisciplinary
Sara Gucyeter, Richard Erpelding, Magnus S. Schmidt
Summary: This article provides an overview of recent methods for catalytic chemical depolymerization of lignin into chemical products, focusing on nickel, zeolite, and palladium-supported catalysts. The study found that by selecting the appropriate catalyst and reaction conditions, it is possible to control the product selectivity efficiently.
Article
Chemistry, Multidisciplinary
Anna Grobelny, Zhongjin Shen, Felix T. Eickemeyer, Naura F. Antariksa, Szczepan Zapotoczny, Shaik M. Zakeeruddin, Michael Graetzel
Summary: This study presents two molecularly tailored organic sensitizers, ZS4 and ZS5, for highly efficient dye-sensitized solar cells (DSCs). ZS4 shows superior electron injection and charge collection efficiency compared to ZS5, resulting in a high power conversion efficiency of 13.2% under sunlight and outstanding stability with 95% of initial efficiency retained after 1000 hours of continuous light soaking.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Wieslaw J. Roth, Takayoshi Sasaki, Karol Wolski, Barbara Gil, Szczepan Zapotoczny, Jiri Cejka, Martin Kubu, Michal Mazur, Yasuo Ebina, Nobuyuki Sakai, Dai-Ming Tang, Renzhi Ma
Summary: This article introduces a soft-chemical treatment method that can exfoliate layered zeolite MFI into nanosheets, which can be used for the synthesis of layer-based hierarchical and nanocomposite materials. The obtained nanosheets have uniform hydrated thickness and can be reassembled into self-standing discs or films, preserving high acid site concentration and porosity. The oriented MFI films formed by this method can be applied in catalysis and separations.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Review
Chemistry, Multidisciplinary
Chao Liu, Yifan Liu, Renzhi Ma, Takayoshi Sasaki, Xin Wang, Pan Xiong, Junwu Zhu
Summary: Two-dimensional (2D) nanosheets derived from layered parent crystals have great potential in energy applications due to their unique 2D features. Improving the performance of pristine 2D nanosheets is crucial, and cation-vacancy engineering is an effective method. This review summarizes recent progress in atomic cation-vacancy engineering of various 2D nanosheets and discusses their superior electrochemical performances in energy-related applications.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Nanoscience & Nanotechnology
Wuqing Luo, An Li, Baopeng Yang, Hong Pang, Junwei Fu, Gen Chen, Min Liu, Xiaohe Liu, Renzhi Ma, Jinhua Ye, Ning Zhang
Summary: A hexagonal phase ZnS photocatalyst is synthesized and exhibits higher CO selectivity and better activity for CO2 reduction reactions compared to cubic ZnS. The study provides valuable insights into the synthesis and electronic structure of hexagonal ZnS for CO2 reduction reactions, which can inspire the design of highly active photocatalysts.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Longe Chen, Gen Chen, Xiaohui Lin, Zhicheng Zheng, Zuxin Wen, Dan Wu, Zheng Weng, Ning Zhang, Xiaohe Liu, Renzhi Ma
Summary: A facile and low-cost strategy has been developed to decorate a Cu current collector with a self-assembled polymer film, which promotes the formation of cobblestone-like Li deposition and suppresses Li-dendrite formation. The protecting layer not only increases the lithiophilicity of the Cu current collector but also alleviates the ambient corrosion and galvanic corrosion. This strategy shows promising results in improving the performance of Li metal batteries.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Fei Ye, Ruilvjing Pang, Chengjie Lu, Qiang Liu, Yuping Wu, Renzhi Ma, Linfeng Hu
Summary: The non-metal NH4+ carrier is attracting a lot of interest for aqueous energy storage due to its light molar mass and fast diffusion in aqueous electrolytes. Previous studies suggested that NH4+ ion storage in layered VOPO4 center dot 2H2O was impossible due to a phase change caused by the removal of NH4+ from NH4VOPO4. However, this belief has been updated and highly reversible intercalation/de-intercalation behavior of NH4+ in layered VOPO4 center dot 2H2O has been demonstrated. The results provide new insight into the intercalation/deintercalation of NH4+ ions in layered hydrated phosphates through crystal water enhancement effect.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Chhabi Lal Gnawali, Sarita Manandhar, Sabina Shahi, Rekha Goswami Shrestha, Mandira Pradhananga Adhikari, Rinita Rajbhandari, Bhadra P. Pokharel, Renzhi Ma, Katsuhiko Ariga, Lok Kumar Shrestha
Summary: This study investigates the methylene blue adsorption and energy storage supercapacitance performances of nanoporous activated carbons derived from Terminalia bellirica seed waste activated by zinc chloride. The activated carbon exhibited excellent adsorption properties and high specific capacitance, making it suitable for adsorption technology and high-performance supercapacitor applications.
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2023)
Article
Chemistry, Physical
Zhong-Hai Ji, Lili Zhang, Dai-Ming Tang, Yi-Ming Zhao, Meng-Ke Zou, Rui-Hong Xie, Chang Liu, Hui -Ming Cheng
Summary: Designed alloy catalysts have shown promise in structure-controlled growth of single-wall carbon nanotubes (SWCNTs). However, it is still challenging to explore and establish the relations between catalyst compositions and the structure of SWCNTs due to the high-dimensional growth parameter space and low efficiency of the conventional trial-and-error optimizing approach. In this study, a high-throughput strategy using Co/Pt/Mo ternary catalysts is presented to investigate the statistical patterns in catalyst activity and selective growth of SWCNTs, revealing the negative correlation between the yield and enrichment of semi-conducting SWCNTs. A Co-Pt alloy catalyst with a uniform size distribution facilitates the enrichment of semi-conducting SWCNTs, while the separate phases of a Co-Mo/Co catalyst stabilize the active Co phase, leading to long lifetime and high yield of SWCNTs.
Article
Chemistry, Physical
Karol Wolski, Joanna Smenda, Anna Grobelny, Pawel Dabczynski, Mateusz Marzec, Adrian Cernescu, Magdalena Wytrwal, Andrzej Bernasik, Jakub Rysz, Szczepan Zapotoczny
Summary: Mixed polymer brushes (MPBs) can be synthesized by diluting homopolymer brushes on the surface and grafting other types of chains in the formed voids. The nanophase separation and dynamics of surface-grafted chains can be tailored by modifying their molecular architecture. The mixed polyelectrolyte and conjugated chains synergistically contribute to the properties of the coating.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Roma Wirecka, Krzysztof Mackosz, Antoni Zywczak, Mateusz Marek Marzec, Szczepan Zapotoczny, Andrzej Bernasik
Summary: In this study, six nanocomposites based on different magnetic nanoparticles and a conducting polymer, poly(3-hexylthiophene-2,5-diyl) (P3HT), were synthesized. The nanoparticles were coated with either squalene and dodecanoic acid or P3HT, and the cores of the nanoparticles were made of nickel ferrite, cobalt ferrite, or magnetite. The average diameters of all synthesized nanoparticles were below 10 nm, with varying magnetic saturation at 300 K. The impact of different magnetic fillers on the conducting properties and the influence of the shell on the final electromagnetic properties of the nanocomposite were explored.
Article
Chemistry, Multidisciplinary
Leanddas Nurdiwijayanto, Kensuke Hayashi, Nobuyuki Sakai, Yasuo Ebina, Dai-Ming Tang, Shigenori Ueda, Minoru Osada, Kazuhito Tsukagoshi, Takayoshi Sasaki, Takaaki Taniguchi
Summary: The structures, stability, and electronic states of 2D ruthenate were investigated by thermal and chemical methods. Contrary to previous reports, exfoliation of a oblique 1T phase precursor led to nanosheets with the same phase. Co doping resulted in nanosheets with metastable rectangular and thermally stable hexagonal 1T phases. Co doping suppressed the redox and catalytic activities under acidic conditions, but activated the Co2+/3+ redox pair and produced conductive nanosheets with high electrochemical capacitance in alkaline conditions.
Editorial Material
Biochemistry & Molecular Biology
Dario Pasini, Szczepan Zapotoczny
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Shunqin Luo, Hui Song, Fumihiko Ichihara, Mitsutake Oshikiri, Wenning Lu, Dai-Ming Tang, Sijie Li, Yunxiang Li, Yifan Li, Philo Davin, Tetsuya Kako, Huiwen Lin, Jinhua Ye
Summary: In this study, a light activation strategy was demonstrated to regulate the dynamic restructuring of Cu active sites in a TiO2-supported Cu catalyst during low-temperature methanol steam reforming. The thermally deactivated Cu/TiO2 underwent structural restoration from Cu2O to metallic Cu under illumination, leading to significantly enhanced activity and stability. The optimized Cu/TiO2 exhibited a high H-2 production rate under low-intensity solar irradiation, outperforming conventional photocatalytic and thermocatalytic processes. The results suggest the feasibility of real-time functionalization of catalysts through the strong light-matter-reactant interaction.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Applied
Aneta Michna, Agata Pomorska, Wojciech Plazinski, Dawid Lupa, Valery Lutsyk, Joanna Odrobinska-Balis, Szczepan Zapotoczny, Zbigniew Adamczyk
Summary: The physicochemical properties of modified chitosan were studied using molecular dynamics modeling and experimental techniques. It was found that the modified chitosan remained stable at pH up to 10 and could form supported films with kappa-carrageenan.
FOOD HYDROCOLLOIDS
(2024)