Article
Chemistry, Multidisciplinary
Sanya Khursheed, Rida Tehreem, Muhammad Awais, Dilshad Hussain, Muhammad Imran Malik, Young Sun Mok, Ghayas Uddin Siddiqui
Summary: The purpose of this study was to investigate the effect of photocatalytic degradation using nitrogen and tungsten co-doped titania (TiO2) nanoparticles, which are cost-effective and environmentally friendly. The synthesized nanoparticles were analyzed using various techniques, including spectroscopy, microscopy, and spectrometry. The co-doping of metal and non-metal enhanced the photocatalytic properties of the TiO2 nanoparticles, particularly in the visible region. This resulted in improved absorption of visible light and reduced recombination of electron-hole pairs, leading to accelerated photodegradation. The bandgap of the titania nanoparticles was reduced after efficient doping, enabling the photodegradation of malachite green under visible light illumination. The results of photocatalytic degradation were confirmed using spectroscopy and high-performance liquid chromatography coupled with mass spectrometry.
Article
Chemistry, Physical
David Tetour, Tomas Paska, Veronika Makova, Barbora Nikendey Holubova, Jana Karpiskova, Michal Rezanka, Jiri Brus, Jana Hodacova
Summary: Two hybrid organosilica materials containing bis-cinchonine-phthalazine bridging organic unit were synthesized and used as heterogenized ligands in catalysis of enantioselective Sharpless alkene dihydroxylation. The nanostructured material exhibited higher enantioselectivities than the bulk material and could be used at least five times without loss of enantioselectivity.
JOURNAL OF CATALYSIS
(2021)
Article
Biochemistry & Molecular Biology
Atheer Al Khudhair, Karim Bouchmella, Pierre Hubert Mutin, Vasile Hulea, Olinda Gimello, Ahmad Mehdi
Summary: The development of green and sustainable materials for use as heterogeneous catalysts is an emerging field of research in chemistry. This study prepared SiO2-Al2O3 mixed oxide catalysts with different Si/Al ratios using different methods and characterized their properties. The results showed that the Si/Al ratio of the catalysts influenced the texture and acidity of the mesoporous materials.
Article
Materials Science, Ceramics
Yu-Xuan Li, Ping Li, Yu-Zhe Wu, Zhen-Liang Xu, Ming-Ling Huang
Summary: A novel TiO2 thin film was prepared on ceramic hollow fibers using sol-gel method with PVP and PVA as additives. The effects of different PVP and PVA contents on the properties of TiO2 sol and the performance of ultrafiltration membranes were thoroughly investigated. The membrane with 1.0 wt% PVP and 0.8 wt% PVA showed superior separation performance and antifouling properties.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Qian Qin, Jie Li, David Dellemme, Mathieu Fossepre, Gabriella Barozzino-Consiglio, Imane Nekkaa, Adrian Boborodea, Antony E. Fernandes, Karine Glinel, Mathieu Surin, Alain M. Jonas
Summary: We demonstrate the strong catalytic activity at low concentrations in dynamic libraries of complementary sequence-defined oligomeric chains. The self-assembled supramolecular di(oligomeric) macrocycles show a catalytic turnover frequency approximately 20 times larger than the linear poly(oligomers) and free chains. Molecular dynamics simulations and network analysis suggest that the self-assembled supramolecular macrocycles are stabilized by different interactions, including chain end pairing.
Review
Chemistry, Physical
Daniel Alves Barcelos, Maria Clara Goncalves
Summary: Visible-light-photoactive titania micro- or nanoparticles have shown great potential in various industrial applications, especially in environmental remediation. The sol-gel method, with its simplicity, versatility, and green chemistry approach, has been successfully employed for synthesizing crystalline and amorphous TiO2 micro- and nanoparticles. This short review aims to discuss the recent advancements in visible-light-photoactive titania-based nanoparticles for environmental remediation. Co-doping of titania, titania composite design, and the use of amorphous networks have been the most commonly used strategies to achieve this goal. Finally, predictions about the future developments in these fields are provided.
Article
Materials Science, Ceramics
Shumaila Islam, Adil Alshoaibi, Kawther Alamer, Javed Mazher, Nisrin Alnaim, Hazri Bakhtiar
Summary: Gold-supported titania nanoparticles (AuTNPs) with encapsulated red dyes exhibited improved pH sensing properties, with reduced particle size and increased refractive index compared to AuTNPs alone. CR-AuTNPs showed faster response time and higher pKa value, indicating their potential as pH sensors.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Joelle Medinger, Miroslava Nedyalkova, Marco Furlan, Thomas Luthi, Jurgen Hofmann, Antonia Neels, Marco Lattuada
Summary: In this study, composite materials mimicking the structure of nacre were prepared by synthesizing a silica gel skeleton with a layered structure and filling the porous structure with a monomer to form a soft elastomer. The mechanical properties of the nacre-like composite material far exceeded those of nonstructured composite materials with an identical chemical composition, showing increased toughness and nearly 10-fold increase in Young's modulus. Pattern recognition and multivariate statistical analysis were used to identify the physical and chemical parameters influencing the mechanical properties of the monoliths.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Mehrdad Malekshahi, Samad Sabbaghi, Kamal Rasouli
Summary: Ceramic membranes with high heat and chemical resistance are essential in the nanofiltration process under harsh conditions. In this study, alumina-titania composite ceramic membranes with a gamma-alumina interlayer were fabricated using sol-gel and dip coating techniques for salt rejection. The membranes exhibited crack-free surfaces after calcination at 450°C. XRD analysis revealed the crystal structure of the membranes. The rejection rate of chlorine was pH-dependent. This research provides a composite ceramic nanofiltration membrane for high-pressure desalination, and the membrane's surface remained unchanged after five cycles, making it a promising candidate in the wastewater treatment field.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Applied
Bruno Alonso, Nathalie Witczak, Cyril Vallicari, Bastien Lecourt-Capdeville, Mathis Guiraud, Laurent Vachoud, Krassimir L. Kostov, Stefan Spirk, Gregor Trimmel, Emmanuel Belamie
Summary: Polysaccharide nanorods can be used as templates to form mesoporous materials. Ethanol cosuspensions containing the nanorods were electrospun to form hybrid organic-inorganic fibers, which exhibited mesoporosity after calcination. The fibers also showed additional microporosity due to the removal of the spinning polymer. The addition of a Ti4+ precursor led to the distribution of isolated and tetrahedral Ti units in the calcined fibers.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Applied
Shumaila Islam, Muhammad Safwan Aziz, Hazri Bakhtiar, Adil Alshoaibi, Sulaiman Wadi Harun, Saira Riaz, Shahzad Naseem
Summary: Mesoporous hematite nanoparticles encapsulated SiO2-TiO2 nanocomposites were synthesized and heat-treated, resulting in improved magnetic properties and higher specific surface area for enhanced sensitivity of the sensor. The fiber optic chemical sensor showed a linear response towards hydrocarbons with good stability and accuracy.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Borbala Tegze, Emoke Albert, Boglarka Diko, Norbert Nagy, Adel Racz, Gyorgy Safran, Attila Sulyok, Zoltan Horvolgyi
Summary: In this study, mesoporous TiO2 sol-gel coatings were modified with silver using two methods, and the effects of silver modification on the functional properties were investigated. The samples made with the impregnation method showed better functional properties despite having significantly lower silver content. The pore structure influenced the Ag content achieved by the impregnation method, and subsequently affected their photoactivity.
Article
Materials Science, Multidisciplinary
Adil Alshoaibi, Shumaila Islam
Summary: The opto-chemical sensing matrices, D-SNIPs, D-TNIPs, and D-STNPs, exhibit thermally stable, large surface area, and different refractive indices. The prepared sensors show a linear response, non-leachability, stability towards high pH 12, and fast time response, making them suitable for practical pH sensing applications.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Polymer Science
Yu Liu, Hao Tang, Meng Zhu, Hongyu Zhu, Jianyuan Hao
Summary: The block ratio and block sequence of a polypeptide significantly influence the self-assembly of copolymers. By tuning the self-assembly through molecular design, it is possible to form various nanostructures with different properties. In the studied triblock copolymers, the PA block between the PEG and PV segments interfered with the beta-sheet structure, affecting the sol-gel transition behavior. The length of the PA or PV block had a more significant influence on the sol-gel transition. Interestingly, the PV block between the PEG and PA segments induced the formation of more stable beta-sheet stacking structures, resulting in a higher sol-gel transition temperature.
Article
Chemistry, Inorganic & Nuclear
Hui Dan, Li Chen, Zhen Li, Xinmiao He, Yi Ding
Summary: Amorphous ZrO2 powders were successfully prepared using a novel hydrothermal-assisted sol-gel method. The obtained powders exhibited features of small and uniform particle size, as well as high purity.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.