Article
Chemistry, Multidisciplinary
Andre Maehringer, Matthias Hennemann, Timothy Clark, Thomas Bein, Dana D. Medina
Summary: This study presents a unique nanoscale material that enables efficient oil-water separation driven by gravity, with high water flux and water adsorption capacity. Furthermore, the material exhibits high separation efficiency for various liquids, particularly in treating water pollutants such as crude oil.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Zheng Ma, Xiumin Ma, Lihui Yang, Xuehui Liu, Zhenyu Zhong, Baorong Hou
Summary: K-doped TiO2 nanotube arrays with superhydrophilicity and high photoelectrochemical cathodic protection performance were prepared via simple methods. The high photoelectroactivity and cathodic protection performance have been proven through various experiments and the mechanism has been verified through spectral and contact angle analysis.
APPLIED SURFACE SCIENCE
(2022)
Article
Green & Sustainable Science & Technology
Zhenxing Fang, Yuhang Lin, Junjie Zheng, Jiefeng Yan, Wenwen Wang, Wenge Zheng, Guangsheng Pang
Summary: Solar steam generation and re-condensing into water is an effective method to alleviate water scarcity caused by unreasonable water waste. This report utilizes superhydrophobic aluminum and superhydrophilic glass as the condensing system and anti-fogging unit, ensuring highly efficient collection of drinkable water. By utilizing a nanowire array and photothermal conversion membrane, the solar distiller achieves a photothermal conversion efficiency of 81%, and by surface modification, achieves superhydrophobic and superhydrophilic surface properties. The synergy of these technologies leads to a water collection efficiency of up to 66% for the solar distiller.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Chemistry, Physical
Cong Fu, Hong Xu, Longxia Wu, Zhen Zhang, Weixin Huang
Summary: Research has shown that X-ray-induced CO conversion to CO2 can occur on oxide surfaces at cryogenic temperatures, with surface defects affecting the process. These findings suggest a potential occurrence in the interstellar medium and caution against X-ray-induced chemical reactions during oxide structural characterizations.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Physics, Applied
Zineb Matouk, Badr Torriss, Rocio Rincon, Amir Mirzaei, Joelle Margot, Mohamed Chaker
Summary: A one-step technique was used to deposit superhydrophilic TiO2@carbon nanocomposites, resulting in a drastic reduction in water contact angle. This effect was attributed to the increased density of graphitic compounds at the surface, rather than an increase in surface roughness, as confirmed by X-ray photoelectron spectroscopy measurements.
PLASMA PROCESSES AND POLYMERS
(2021)
Article
Physics, Applied
Kai Yin, Zhipeng Wu, Junrui Wu, Zhuo Zhu, Fan Zhang, Ji-An Duan
Summary: Solar-driven vapor generation is enhanced by combining thermal and wind effects on a superhydrophilic copper foam surface, increasing the rate of water evaporation. The treated surface absorbs significant solar power which can be converted into heat for steam generation, while a pre-wetted sponge minimizes heat loss and helps maintain high evaporation rates.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Yuheng Jiang, Wenshi Zhao, Siyang Li, Shikun Wang, Yingying Fan, Fei Wang, Xueying Qiu, Yanfei Zhu, Yin Zhang, Chang Long, Zhiyong Tang
Summary: In this study, the crystal phase engineering of commercially available TiO2 catalyst was optimized to achieve high efficiency and selectivity in the oxidation of methane to formaldehyde under mild conditions. Experimental results and theoretical calculations revealed that crystal phase engineering prolonged the lifetime of photogenerated carriers and promoted the formation of intermediate methanol species, thus maximizing the efficiency and selectivity of formaldehyde production. Moreover, the feasibility of large-scale formaldehyde production was demonstrated by inventing a pause-flow reactor.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Food Science & Technology
Charles Spence
Summary: Outstanding questions remain regarding the maximum sweetness enhancement effect, the importance of conscious awareness of specific volatiles in odor-induced taste enhancement, and whether volatiles are associated with taste qualities through associative learning.
FOOD QUALITY AND PREFERENCE
(2022)
Article
Engineering, Chemical
Yu-qiong Gao, Jin-qiang Zhou, Jia Zhang, Cong Li, Nai-yun Gao, Da-qiang Yin
Summary: The study investigates the effects of various factors on the degradation of PNT and its disinfection byproduct formation potentials by UV/PS treatment. Factors such as PS concentration, pH, HCO3-, NO3-, NO2-, and NOM were found to significantly affect PNT degradation. These factors also influence the formation of disinfection byproducts from chlorination following UV/PS pretreatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Ambreen Ashar, Ayesha Qayyum, Ijaz Ahmad Bhatti, Humera Aziz, Zeeshan Ahmad Bhutta, Mostafa A. Abdel-Maksoud, Muhammad Hamzah Saleem, Mohamed R. Eletmany
Summary: The study focuses on the growth of photo-induced, hydrophilic, nano-calcite onto the mercerized surface of polyester fabric and its photocatalytic application. UV and visible light were used to treat the fabric, resulting in significant changes in the surface properties of the nano-calcite @ PF. The photocatalytic efficiency of the treated fabric was evaluated by degradation of imidacloprid, and the results showed enhanced activity under UV light irradiation.
Article
Physics, Applied
Youhua Jiang, Leyun Feng, Allison O'Donnell, Christian Machado, Wonjae Choi, Neelesh A. A. Patankar, Kyoo-Chul Park
Summary: This study reports a droplet transport phenomenon on a superhydrophilic wire, where the velocity is not driven by substrate geometry or wettability gradients, but primarily by surface-to-kinetic energy transition. The efficiency of this transition is mainly limited by the viscous friction at the local liquid wedge, which can be captured by a modified Ohnesorge number.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Kong Wenting, Fu Shaohai, Pan Yunlu, Zhao Xuezeng
Summary: Atmospheric water collection is a new solution to tackle the issue of water shortage. Biomimetic materials have been developed based on surface wettability to mimic fog-harvesting abilities observed in smart creatures. By manipulating the size and percentage of superhydrophilic patterns on a hydrophobic glass surface, the fog harvesting efficiency has been significantly improved. Additionally, the hydrophobic glass can be modified to be acid and alkali resistant while maintaining superhydrophilic/underwater superoleophobic properties.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Materials Science, Ceramics
Xuan Wang, Hao Ding, Guocheng Lv, Run Zhou, Ruixin Ma, Xifeng Hou, Jianmeng Zhang, Wei Li
Summary: In this study, SiO2-TiO2 composite particles were successfully synthesized and used to fabricate superhydrophilic self-cleaning coatings on various substrates. The coatings demonstrated excellent photocatalytic degradation performance and superhydrophilicity. The results suggest that the as-prepared SiO2-TiO2 coating has a great potential for various applications.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Applied
Gonul S. Batibay, Elif Ozcelik Kazancioglu, Ender Kose, Nergis Arsu
Summary: In this study, a photochemical method was used to prepare functional nano hybrid coatings and modify surface properties by adding a small amount of POSS compound to hydrophobic monomer systems. In-situ formation of silver nanoparticles was achieved during the preparation process, resulting in the transformation of hydrophobic epoxy polymeric nanohybrid film to super-hydrophilic. These results have the potential to open new avenues for research in drug delivery and biomedical applications.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Materials Science, Coatings & Films
Eun-Jae Lee, C. G. Jothi Prakash, Ji-Han Lee, Jeong-Soo Kim, Seong-Un Im, Yeon-Soo Kim, Jeong-Won Lee
Summary: The rapid development of nanoscale surface modification technology has led to the development of superhydrophilic, superhydrophobic, and slippery liquid-infused porous surfaces (SLIPS) in recent decades. These surfaces have excellent self-cleaning and anti-contamination performance, and many studies have reported their industrial applications. The surface modification of titanium remains challenging, but this study presents a significant advancement with a simple fabrication method that can be applied to large areas, complex shapes, or mass production, unlike existing methods.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Physical
Petr D. Murzin, Aida Rudakova, Alexei Emeline, Detlef W. Bahnemann
Summary: Two series of Sc3+- and Nb5+-doped TiO2 samples were synthesized and characterized, and their photocatalytic activity in phenol degradation was tested. The dependence of photocatalytic activities of the doped TiO2 samples demonstrated a volcano-like behavior, indicating the existence of optimal dopant concentrations for achieving the highest activity. The optimal dopant concentrations corresponded to the extrema observed in work function dependencies on dopant concentrations, suggesting a significant energy redistribution of the defect states within the bandgap of TiO2. The redistribution of defect states was also supported by the alterations in optical and EPR spectra of the intrinsic defect states in TiO2. The study concluded that Sc3+ and Nb5+ doping of TiO2 resulted in defect state redistribution and the optimal dopant concentrations corresponded to defect structures that are ineffective in charge carrier recombination, thereby leading to higher photocatalytic activity of doped TiO2.
Article
Materials Science, Multidisciplinary
Denis Nazarov, Ilya Ezhov, Natalia Yudintceva, Ilya Mitrofanov, Maxim Shevtsov, Aida Rudakova, Maxim Maximov
Summary: Titanium oxide nanocoatings were synthesized on silicon and titanium surfaces using atomic layer deposition, and the effects of different precursors and temperatures were studied. Different samples showed varying cell adhesion and spreading rates, but all exhibited excellent biocompatibility and osteoconductive properties.
Article
Chemistry, Multidisciplinary
Alexei Emeline, Aida V. Rudakova, Vladimir K. Ryabchuk, Nick Serpone
Summary: This brief article discusses the features and characteristics of nanocomposite photoactive materials and photoactive heterostructured materials, as well as the kinetic and thermodynamic factors that affect the relevant redox reactions. The principal difference between composite and heterostructured materials lies in the electron interaction properties between the components.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Takuya Hirosawa, Ken Yamamoto, Munetoshi Sakai, Yasuhide Mochizuki, Toshihiro Isobe, Sachiko Matsushita, Akira Nakajima
Summary: In this study, the self-propulsion of water droplets caused by the Leidenfrost phenomenon on zinc plates was analyzed. It was found that the dominant mode of self-propulsion depends on the temperature, and the design of the solid surface can control the self-propulsion. Furthermore, the time dependence of the dominant propulsive force was found to be related to the ratchet structure and surface modification with ZnO nanorods.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Biochemistry & Molecular Biology
Aleksei O. Murzin, Anna Yu. Samsonova, Constantinos C. Stoumpos, Nikita I. Selivanov, Alexei V. Emeline, Yury V. Kapitonov
Summary: Halide perovskites and their low-dimensional analogs are promising semiconductor materials for various photonics applications. This paper proposes a method using diluted diffuse reflectance spectroscopy to obtain the full-range absorption spectrum from halide perovskite powders, and demonstrates its practical importance.
Article
Materials Science, Multidisciplinary
Mariia P. Mamaeva, Maksim S. Lozhkin, Anna V. Shurukhina, Boris V. Stroganov, Alexei V. Emeline, Yury V. Kapitonov
Summary: This paper demonstrates the possibility of using resonant excitons to create resonant diffraction gratings, and achieves spatial modulation of excitonic properties by ion irradiation. This method features low radiation dose, high efficiency, and narrow spectral width, making it widely applicable in the field of information photonics.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Physical
Kirill M. M. Bulanin, Alexei V. V. Emeline, Ruslan V. V. Mikhaylov, Alena Y. Y. Mikheleva, Aida V. V. Rudakova, Vladimir K. K. Ryabchuk
Summary: In this research, the UV-stimulated processes in the TiO2-COg system were studied using in situ FTIR spectroscopy and photoelectron spectroscopy. The kinetic dependences of the adsorbed CO intensity and background absorption, as well as the positions of the Fermi level in TiO2, were analyzed and compared before, during, and after UV irradiation. The reversible shift in the adsorption-desorption equilibrium was explained by changes in the electronic state of the photocatalyst under UV irradiation. The proposed mechanism of photostimulated CO adsorption and re-adsorption in the TiO2-COg system is described in detail, including the formation of strongly bound surface carbonates caused by the side reaction of CO photooxidation.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Anna Yu. Samsonova, Irina V. Krauklis, Yuri V. Chizhov, Nikita I. Selivanov, Alexei V. Emeline, Yury V. Kapitonov
Summary: In this study, polarized Raman spectroscopy was used to investigate the internal vibrations of the 3-cyanopyridinium cation in the halide post-perovskite (3cp)PbBr3 crystal. The vibrational frequencies and intensities of the Raman signal were calculated for a single cation using density functional theory. Selection rules for cation vibrations in the crystal were established and used to identify the internal vibrations of the cation in the Raman spectrum. Narrow and isolated internal cation vibrations can serve as indicators of the crystalline environment.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Denis Nazarov, Lada Kozlova, Aida Rudakova, Elena Zemtsova, Natalia Yudintceva, Elizaveta Ovcharenko, Alexandra Koroleva, Igor Kasatkin, Ludmila Kraeva, Elizaveta Rogacheva, Maxim Maximov
Summary: Atomic layer deposition (ALD) was used to grow zinc-titanium oxide nanofilms with different ratios of ZnO and TiO2. Characterization techniques such as spectral ellipsometry, X-ray reflectometry, X-ray diffraction, scanning electron microscopy, SEM-EDX, and contact angle measurements were used to evaluate the thickness, morphology, and composition of the films. The results showed that the thickness of the coatings deviated from the rule of mixtures, with higher ZnO/TiO2 ratios resulting in lower thickness and higher titanium oxide content leading to increased thickness. The ZTO samples also exhibited antibacterial properties and did not negatively affect human mesenchymal stem cells, suggesting their potential for medical applications.
Article
Chemistry, Physical
Anna Yu. Samsonova, Irina V. Krauklis, Yuri V. Chizhov, Nikita I. Selivanov, Alexei V. Emeline, Yury V. Kapitonov
Summary: In this work, polarized Raman spectroscopy is used to study the internal vibrations of the 3-cyanopyridinium cation in the halide post-perovskite (3cp)PbBr3. Vibrational frequencies and intensities of a single cation are calculated using density functional theory, and selection rules for cation vibrations in the crystal are established. These rules, along with modeling results, are used to identify the internal vibrations of the cation in the Raman spectrum of the crystal. Narrow and isolated internal vibrations of cations can be used as spectators of the crystalline environment.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Materials Science, Multidisciplinary
D. S. Shtarev, M. I. Balanov, A. Ju. Major, A. V. Gerasimenko, R. Kevorkyants, D. A. Zharovov, K. M. Bulanin, D. V. Pankin, A. V. Rudakova, D. A. Chaplygina, N. I. Selivanov, A. V. Emeline
Summary: This study reports on the experimental structures, optoelectronic, and luminescence properties of a series of low-dimensional hybrid organic-inorganic perovskites. The results show that the dimensions and properties of the perovskites are influenced by the halogen anions.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Optics
K. M. Bulanin, A. Yu Mikheleva, D. N. Shchepkin, A. Rudakova
Summary: The adsorption of carbon monoxide on a TiO2 (anatase) surface at room temperature was investigated using IR spectroscopy and volumetry. The experimental results suggest a weak adsorption of CO molecules on an exponentially inhomogeneous surface. It was observed that the adsorption enthalpy decreases logarithmically with increasing coverage in the range of 0.002-0.03. The extinction coefficient of adsorbed CO in a heterogeneous CO/TiO2 system was calculated using the Bouguer-Lambert-Beer law and Lorentz field correction, considering the validity conditions for studying heterogeneous systems.
OPTICS AND SPECTROSCOPY
(2022)
Article
Engineering, Biomedical
Denis Nazarov, Ilya Ezhov, Natalia Yudintceva, Maxim Shevtsov, Aida Rudakova, Vladimir Kalganov, Vladimir Tolmachev, Yuliya Zharova, Oleksiy Lutakov, Ludmila Kraeva, Elizaveta Rogacheva, Maxim Maximov
Summary: The combination of titania nanofilms and silver nanoparticles is a promising material for titanium implant coatings, exhibiting antibacterial activity and osseointegration-induced properties. In this study, TiO2 nanolayer/Ag NP structures were successfully prepared on titanium disks using atomic layer deposition. The samples showed high antibacterial activity, differentiation in the osteogenic direction, and non-cytotoxicity, indicating the success of the combining of TiO2 and Ag to produce a multifunctional biocompatible and bactericidal material.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2022)
