Article
Acoustics
J. A. Fuentes-Garcia, J. Santoyo-Salzar, E. Rangel-Cortes, G. F. Goya, V Cardozo-Mata, J. A. Pescador-Rojas
Summary: The optimized synthesis of gold nanoparticles with different shapes and sizes was achieved using ultrasonic irradiation assisted Turkevich-Frens method. The effects of different ultrasound powers and continuous irradiation time were studied to control the size and shape of the GNPs colloidal solutions. The resulting quasi-spherical GNPs showed sizes ranging from 12 to 16 nm, with different shapes such as pentakis dodecahedron, triakis icosahedron, and tetrakis hexahedron.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Mohammed Ali Dheyab, Azlan Abdul Aziz, Nazila Oladzadabbasabadi, Alyaa Alsaedi, Farhank Saber Braim, Mahmood S. Jameel, Asmeit Ramizy, Mohammad Alrosan, Ali Madi Almajwal
Summary: This study investigates the influence of synthetic methods on the aggregation stability and antibacterial activity of gold nanoparticles against Staphylococcus aureus. The sonochemical method produces monodispersed spherical gold nanoparticles with excellent stability and strong antibacterial activity, which is significant for the development of new antibacterial agents and water purification processes.
Article
Materials Science, Multidisciplinary
Yunlong Zhou, Yu Zou, Jiang Jiang
Summary: In this study, a chiral cysteine-directed seeded-growth approach was used to synthesize chorogi-like Au nanoparticles. The obtained nanoparticles exhibit distinct chiral plasmonic response and excellent catalytic activity, offering new opportunities for broadening optical and catalytic applications of Au nanoparticles.
Article
Chemistry, Physical
Zhu Sun, Weiwei Fan, Tianquan Lin
Summary: This study proposes a method to rapidly prepare exsolution-based nanocatalysts using dielectric barrier discharge (DBD) plasma. By hydrogen plasma treatment, nanocatalysts with small particle size and high particle density can be obtained in several minutes. The treated electrodes show better electrochemical performance due to the increased active sites.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Chemistry, Multidisciplinary
Quansong Zhu, Catherine J. Murphy, L. Robert Baker
Summary: This perspective summarizes recent advances and opportunities using surface ligands to enhance the performance of nanocatalysts for electrochemical CO2 reduction. Several mechanisms are discussed, including selective permeability, modulating interfacial solvation structure and electric fields, chemical activation, and templating active site selection.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Biotechnology & Applied Microbiology
Angelo Corti, Angelina Sacchi, Anna Maria Gasparri, Matteo Monieri, Giulia Anderluzzi, Barbara Colombo, Alessandro Gori, Anna Mondino, Flavio Curnis
Summary: Gold nanospheres tagged with isoDGR peptides can efficiently deliver pro-inflammatory cytokines to tumor vasculature. Bifunctional or trifunctional nanoparticles loaded with TNF and/or IL12, along with isoDGR peptides, show anti-cancer effects in a mouse model of fibrosarcoma by delaying tumor growth and enhancing doxorubicin efficacy without increasing toxicity. Mechanistic studies suggest that these nanoparticles can improve doxorubicin penetration in tumors and cause vascular damage.
JOURNAL OF NANOBIOTECHNOLOGY
(2021)
Article
Chemistry, Physical
Linwei Zheng, Tiantian Zeng, Miao Ling, Yanrui Wang, Weiyong Yuan, Lian Ying Zhang
Summary: Adding other transition metals into Pd lattice is an effective strategy to improve Pd utilization and enhance its catalytic activity through generated ligand and strain effects. In this study, PdMn nanosheet assembled nanobuds were synthesized using a facile method, which showed significantly better catalytic activity and stability compared to the-state-of-the-art Pd-C catalyst. The catalytic enhancement mechanism can be mainly attributed to the modulated electronic structure and consequent charge redistribution that resulted in the generated ligand effect.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Analytical
Xiang-Yu Xiao, Zong-Yin Song, Pei-Hua Li, Shi-Hua Chen, Li-Na Li, Meng Yang, Chu-Hong Lin, Xing-Jiu Huang
Summary: The study successfully stabilizes Au-25 nanoclusters on Fe2O3 nanoplates, forming Au-25/OV-Fe2O3 with superhigh electrochemical reduction catalytic activity, breaking sensitivity records and offering promising applications in the analysis of organic and bioactive substances. The Au-Fe bond and S atoms in Au-25 nanoclusters play important roles in the reduction of As(III). The fantastic stability and catalytic ability of Au-25/OV-Fe2O3 provide guidelines for stabilizing Au nanoclusters on metal oxides.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Yinghui Pu, Yiming Niu, Yongzhao Wang, Qing Liang, Lei Zhang, Bingsen Zhang
Summary: The facet-dependent metal-support interaction in Pd/ZnO catalysts significantly influences the structure and performance by affecting the thermal stability and sintering behavior of the supported Pd species. ZnO nanosheets and nanorods exhibit distinct thermal behaviors and result in different sintering effects on Pd nanoparticles, leading to varying catalytic activities in the CO oxidation reaction.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Acoustics
Ndifreke Usen, Si Amar Dahoumane, Mamadi Diop, Xavier Banquy, Daria C. Boffito
Summary: Au nano- and microparticles were successfully synthesized using alpha-D-glucose as the reducer and stabilizer under 20 kHz ultrasound irradiation. The pH of the reaction mixture played a critical role in determining the size of the particles, with low pH producing nanoparticles and high pH yielding microparticles. The study also revealed that continuous sonication reduced larger amounts of the Au precursor compared to intermittent mode, highlighting the importance of experimental and ultrasound parameters in controlling the features of the Au particles.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Chemistry, Applied
Mohamed A. Mohamady Hussein, Mariusz Grinholc, Ahmed S. Abo Dena, Ibrahim M. El-Sherbiny, Mosaad Megahed
Summary: A new series of chitosan-gold hybrid nanoparticles were synthesized for delivering pomegranate peel extract, with pomegranate peel acting as a reducing agent leading to a significant reduction in particle size. The developed nanoparticles exhibited higher stability at different pH values and released most of the loaded extract over a 24-hour period. The antibacterial activity of the nanoparticles showed a synergistic effect against methicillin-resistant S. aureus.
CARBOHYDRATE POLYMERS
(2021)
Article
Chemistry, Multidisciplinary
Jing Wan, Bo Fan, San H. Thang
Summary: Polymer-metal nanocomposites were prepared using ultrasound as both the initiation and reducing source, demonstrating improved catalytic performance. The strategy is expected to greatly expand the utility of ultrasound in the preparation of polymer-metal nanocomposites and promote their catalytic applications.
NANOSCALE ADVANCES
(2021)
Article
Chemistry, Physical
Akihiro Nakayama, Ryusei Sodenaga, Yuvaraj Gangarajula, Ayako Taketoshi, Toru Murayama, Tetsuo Honma, Norihito Sakaguchi, Tetsuya Shimada, Shinsuke Takagi, Masatake Haruta, Botao Qiao, Junhu Wang, Tamao Ishida
Summary: Cation-and anion-substituted hydroxyapatites (sHAPs) supported gold catalysts exhibit strong metal support interaction (SMSI) under oxidative atmosphere, enhancing the cationic properties of gold and increasing catalytic activity. Controlling the degree of SMSI allows for tuning the electronic state of metal nanoparticles and providing highly active and durable catalysts for target reactions.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Applied
Lijun Fan, Jun Wang, Zhiyong Huang, Xueli Yao, Nianjun Hou, Tian Gan, Juanjuan Gan, Yicheng Zhao, Yongdan Li
Summary: In this study, the surface properties of La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF) perovskite electrode were modified with HNO3 treatment to improve its catalytic activity towards oxygen reduction reaction. The acid etching reduced the surface concentrations of A-site cations and suppressed the segregation of Sr on the surface. The HNO3 treatment also led to the formation of highly reactive oxygen species and Fe4+ species on the surface, accelerating the reduction of oxygen species adsorbed on the LSCF surface.
Article
Polymer Science
Aftab Alam, Talha Jawaid, Saud M. Alsanad, Mehnaz Kamal, Pinki Rawat, Vinita Singh, Pravej Alam, Prawez Alam
Summary: This study developed a transdermal nanoformulation for Proteus vulgaris using hesperidin, which showed good drug release and antimicrobial activity. It could be an advanced approach for treating Proteus vulgaris infections.
Article
Chemistry, Physical
Wenjuan Shi, Ah-Hyeon Park, Hyun-Uk Park, Young-Uk Kwon
JOURNAL OF CATALYSIS
(2020)
Article
Chemistry, Physical
Md. Abdul Matin, Junsu Lee, Gwan Woo Kim, Hyun-Uk Park, Byeong Jun Cha, Sarvjit Shastri, Gunn Kim, Young-Dok Kim, Young-Uk Kwon, Valeri Petkov
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Article
Engineering, Electrical & Electronic
Pawan Kumar Srivastava, Yasir Hassan, Duarte J. P. de Sousa, Yisehak Gebredingle, Minwoong Joe, Fida Ali, Yang Zheng, Won Jong Yoo, Subhasis Ghosh, James T. Teherani, Budhi Singh, Tony Low, Changgu Lee
Summary: Twisted black phosphorus homostructures can be used to create resonant tunnelling diodes, where the interlayer twist angle can be used to control the vertical transport behavior.
NATURE ELECTRONICS
(2021)
Review
Physics, Applied
Minwoong Joe, Pawan Kumar Srivastava, Budhi Singh, Hyobin Ahn, Changgu Lee
Summary: This article discusses the production of high Curie temperature two-dimensional magnets by incorporating iron into van der Waals layers, as well as the potential applications of these materials in spintronics.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Correction
Engineering, Electrical & Electronic
Pawan Kumar Srivastava, Yasir Hassan, Duarte J. P. de Sousa, Yisehak Gebredingle, Minwoong Joe, Fida Ali, Yang Zheng, Won Jong Yoo, Subhasis Ghosh, James T. Teherani, Budhi Singh, Tony Low, Changgu Lee
NATURE ELECTRONICS
(2021)
Article
Electrochemistry
Wenjuan Shi, Ah-Hyeon Park, Zhengyang Li, Shiyu Xu, Ji Man Kim, Pil J. Yoo, Young-Uk Kwon
Summary: The study shows that the TiO2 coating on carbon material can enhance the activity and durability of Pt/TiO2/C catalysts for oxygen reduction reaction. The significantly improved performance is attributed to the strong metal-support interactions (SMSI) effect between TiO2 coating and Pt NPs, as well as the bifunctional mechanism from the TiO2 surface around Pt NPs.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Kyung-Ryul Oh, Yejin Han, Ga-Young Cha, Anil H. Valekar, Mijung Lee, Sanil E. Sivan, Young-Uk Kwon, Young Kyu Hwang
Summary: This study demonstrates a dual catalyst system incorporating CO2 hydration and Pd/C catalysts to increase the yield of formic acid from base-free CO2 hydrogenation. The addition of a Mo-132 cluster significantly improves the FA yields and turnover numbers of Pd/C through a ligand exchange-derived CO2 hydration process. The Mo-132@MIL-100(Fe) catalyst not only showed higher turnover numbers compared to the Mo-132 cluster, but also remained separable and recyclable with Pd/C for consecutive reactions.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Yisehak Gebredingle, Minwoong Joe, Changgu Lee
Summary: This article introduces experimentally realized Cr2S3 as a promising candidate for bipolar magnetic semiconducting (BMS)/HS fully compensated ferrimagnetic (FCFiM) material. Using density functional theory calculations, it is found that Cr2S3 has a uniquely layered structure that results in different hybridization schemes between Cr atoms in interlayer and intralayer regions. Strong interlayer and weak intralayer antiferromagnetic coupling lead to a fully compensated magnetic state. Applying strains alters the electronic and magnetic properties of the material, transitioning it from BMS-FCFiM to HS-FCFiM and finally to ferrimagnetic (FiM).
PHYSICAL REVIEW MATERIALS
(2022)
Article
Physics, Multidisciplinary
Yisehak Gebredingle, Minwoong Joe, Changgu Lee
Summary: This study investigates the effect of interlayer twist angles on twisted black phosphorus flakes using first-principles calculations. The results show the influence of twist angle on the band structure and discuss the mechanism of controlling electronic structures by twisting layers, as well as an effective approach to handle the long-range Moire superlattice induced by incommensurate lattices.
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Yisehak Gebredingle, Minwoong Joe, Changgu Lee
Summary: First-principles calculations were used to study the electronic and magnetic properties of non-van der Waals chromium chalcogenide Cr2X3 (X = S, Se, Te). The results revealed their spin-dependent properties and their tunability under strain. Cr2Se3 was found to be an intrinsic half-metal with a fully compensated ferrimagnetic state, while Cr2S3 showed bipolar magnetic semiconductor behavior and acted as a half-semiconductor under slight strain. Cr2Te3 exhibited conventional metal behavior with a ferromagnetic state. The band gap and magnetic phase transition in this material could be tuned through straining. The interplay between inequivalent Cr sites under strain played a major role in determining the magnetic configuration, favoring antiferromagnetic state for shorter spacing and ferromagnetic state for longer spacing. In-plane magnetic anisotropy was observed for S and Se, while strong perpendicular magnetic anisotropy was dominant for Te. These results will encourage further research on non-van der Waals materials and their potential applications in spintronics.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Sung-Joon Park, Myung-Seok Lee, Mehmet Emin Kilic, Junil Ryu, Hosik Park, You In Park, Hyoungsoo Kim, Kwang-Ryeol Lee, Jung-Hyun Lee
Summary: Interfacial polymerization is used to fabricate functional nanofilms for various applications by assembling polymer nanofilms at the water-oil interface in the presence of surfactants. Through in situ visualization and computational simulations, this study reveals the critical role of Marangoni instability induced by surfactants in structurally regulating nanofilms. Despite different instability-triggering mechanisms, the delicate control of surfactants enables the fabrication of defect-free nanofilms with ultra-permselectivity.
Article
Chemistry, Physical
Zan Chen, Naizhou Du, Xiaowei Li, Xubing Wei, Jiaqing Ding, Shiqi Lu, Shuangjiang Du, Cunao Feng, Kai Chen, Dekun Zhang, Kwang-Ryeol Lee
Summary: This study investigates the friction behavior of a-C films under different textured shapes and contact pressures. It is found that the textured shape plays a role in determining the friction coefficient of a-C film at low contact pressure, with circular textured surface exhibiting lower friction coefficient. However, with the increase of contact pressure, the friction interface undergoes reconstruction and passivation, resulting in a significant decrease in friction coefficient.
Article
Nanoscience & Nanotechnology
Yisehak Gebredingle, Minwoong Joe, Changgu Lee
Summary: First-principles calculations were used to study the electronic and magnetic properties of non-van der Waals chromium chalcogenides. The results showed spin-dependent properties that can be tuned with strain, leading to potential applications in spintronics. Different magnetic configurations were observed under strain, with implications for magnetic anisotropy.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Youngchan Kim, Euihoon Jeong, Minwoong Joe, Changgu Lee
Summary: 2D semiconducting materials offer promising features for electronic device applications, but face challenges such as low charge-carrier mobility. A new synthesis method has been proposed to achieve high performance single crystalline 2D Bi2S3, showing potential for advanced electronic device applications.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Hoje Chun, Eunjik Lee, Kyungju Nam, Ji-Hoon Jang, Woomin Kyoung, Seung Hyo Noh, Byungchan Han
Summary: This research explores materials beyond the scope of pure quantum mechanical calculations using a machine-learning approach and successfully synthesizes a high-performance PtFeCu nanocatalyst. Both computational and experimental results consistently show that PtFeCu is highly active due to the beneficial modulation of surface strain and segregation caused by the atomic distribution of Cu.
Review
Chemistry, Multidisciplinary
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS
(2024)
Review
Chemistry, Multidisciplinary
Olivier Monfort, Arshitha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS
(2024)
