Article
Chemistry, Analytical
Shou-Yi Li, Zheng-Lai Liu, Gen-Xiang Xiang, Bao-Hong Ma
Summary: In this work, researchers fabricated porous anodic aluminium oxide (AAO) films by anodization in an electrolyte mixture of malonic acid and oxalic acid at room temperature. The photoluminescence (PL) properties of the AAO films were investigated before and after annealing, showing a strong PL band. Different concentrations of oxalic acid in the electrolyte mixture resulted in a redshift of the PL bands and modulated the PL wavelength and intensity.
Article
Materials Science, Multidisciplinary
Reyhane Nabavi, Shayan Sarraf, Mansour Soltanieh
Summary: The primary objective of this research was to optimize the thickness and microhardness of anodic aluminum oxide formed on 6061-T6 Aluminum Alloy using the response surface methodology. A comparative analysis of the corrosion resistance and microhardness of the anodized coating was conducted between pulsed and DC anodization processes. Pulsed current anodized samples exhibited superior microstructure, corrosion resistance, and microhardness compared to direct current anodized samples. The optimization of parameters suggested the best current density, duty cycle, and frequency for achieving maximum thickness and microhardness.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Electrochemistry
Mana Iwai, Tatsuya Kikuchi
Summary: A novel ultra-smoothing process for aluminum surfaces was developed using porous alumina formation and subsequent oxide dissolution. The process involved anodizing the aluminum surface in an etidronic acid solution to create a periodic dimpled surface, followed by anodizing in a sodium metaborate solution to form a porous alumina film with a flat barrier layer. Chemical removal of the porous alumina film resulted in an ultra-smooth aluminum surface with a roughness of 0.4 nm, significantly smaller than that achieved by electropolishing.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Dipal B. Patel, Khushbu R. Chauhan, Indrajit Mukhopadhyay
Summary: This study demonstrates the pyroelectric properties of tetragonal alpha-PbO thin films and reveals the unexplored potential of PbO material for fabricating low cost pyroelectric or photovoltaic devices.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Materials Science, Coatings & Films
R. Sanchez-Tovar, E. Blasco-Tamarit, L. Ibanez-Arlandis, R. M. Fernandez-Domene, G. Rosello-Marquez, J. Garcia-Anton
Summary: Hybrid TiO2-WO3 nanostructures were successfully synthesized through controlled electrochemical anodization under hydrodynamic conditions, followed by electrodeposition. The resulting nanostructures exhibited a significantly higher photocurrent response compared to traditional TiO2 nanotubes, presenting a solution to the challenges of high temperature, pressure, chemical usage, and time consumption in fabricating heterostructures.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Takuma Sano, Yuki Wakabayashi, Hidetaka Asoh
Summary: The 7075-T6 aluminum alloy was anodized in sulfuric acid for 60 minutes, resulting in the formation of small horizontal pores alongside the typical straight pores due to the chemical dissolution of the anodic film. However, when ethylene glycol was added to the sulfuric acid, the porous film maintained its original structure with a low porosity even after 60 minutes of anodization. Moreover, the coating ratio and Martens hardness of the film formed in the mixture of sulfuric acid and ethylene glycol were significantly higher compared to the film formed in sulfuric acid alone, indicating the strong influence of the dissolution behavior of alloying elements and alumina on the film properties.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Jiacheng Liu, Song-Zhu Kure-Chu, Yoko Sakurai, Xuewen Chen, Minoru Osada
Summary: Hard porous anodic alumina (PAA) films were successfully fabricated by adding an appropriate amount of nitric acid to sulfuric, oxalic, and phosphoric acid solutions. The addition of nitric acid enhanced the formation of alumina, resulting in fast growth rates and high hardness. However, the corrosive nature of nitric acid led to a decrease in the surface hardness of the films.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Samir F. Matar, Vladimir L. Solozhenko
Summary: Novel ultra-hard carbon allotropes have been proposed, which exhibit diamond-like structure and properties based on crystal chemistry rationale and geometry optimization.
SOLID STATE SCIENCES
(2022)
Article
Engineering, Chemical
Bin Liu, Heng Duan, Liangsheng Li, ChengShang Zhou, Junyang He, Haibo Wu
Summary: This article introduces a new industrial method for preparing spherical high entropy alloy powders and discusses their characteristics. The powder has a single structure and high hardness, making it suitable for superhard materials.
Article
Energy & Fuels
Xuewen Chen, Song-Zhu Kure-Chu, Jiacheng Liu, Takashi Matsubara, Yoko Sakurai, Takehiko Hihara, Sung-Hyung Lee, Minoru Osada, Masazumi Okido
Summary: In this study, nanoporous titanium dioxide films were prepared using a smart anodization method, with the addition of glycine and ethanol to improve conductivity and nanoporous structures. The as-prepared TiO2-TiO films exhibited high initial discharge capacity and cycling stability as a lithium-ion battery anode.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Environmental
Victoria Sanahuja-Embuena, Sungil Lim, Radoslaw Gorecki, Krzysztof Trzaskus, Claus Helix-Nielsen, Ho Kyong Shon
Summary: The study successfully improved the selectivity of outer-selective forward osmosis membrane by incorporating nanostructures containing water selective proteins, reducing the reverse solute flux and improving urea rejection. These membranes can be used in osmotic membrane bioreactors and improve the selectivity of other thin-film composite membranes.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Jin Wang, Yongkang Xu, Shuanghai Wang, Xingze Dai, Pengfei Yan, Jian Zhou, Ruifeng Wang, Yongbing Xu, Liang He
Summary: This research focuses on investigating the magneto-transport properties of 2D material CrTe2 and uncovers the mechanism behind its ferromagnetism, providing a theoretical foundation for its applications.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Alexander Poznyak, Andrei Pligovka, Tsimafei Laryn, Marco Salerno
Summary: The study investigated the volumetric growth, composition, and morphology of porous alumina films fabricated by anodizing aluminum foil in sulfuric acid solutions of varying concentrations. Results showed that increasing solution concentration did not significantly affect the anodizing rate but led to an increase in the growth of porous alumina film.
Article
Polymer Science
Abedeen Dasaesamoh, Kittikhun Khotmungkhun, Kittitat Subannajui
Summary: To obtain rigid plastic from natural rubber, an ultra-high amount of magnesium carbonate particles was added. The increased magnesium carbonate content significantly increased the hardness and reduced the elastomeric properties of the composite.
Article
Chemistry, Physical
Yunhui Wu, Xufeng Liu, Wenjian Wu, Yuanmin Zhu, Kunquan Li, Xiaojing Su, Huali Xie, Xiaofan Zhang, Haitao Xu, Kang Wang, Zhi-Min Dang
Summary: This study reports a novel strategy for fabricating flexible transparent conductive films using liquid metal interface phase separation technique. The ultra-thin self-oxide layer with ITO structure was successfully printed on a flexible PEN substrate, resulting in high transparency and low resistivity. These films can be used as flexible transparent conductive electrodes in various devices.
JOURNAL OF MATERIOMICS
(2022)
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)