Article
Physics, Applied
Yoshinari Kimura, Hironori Tohmyoh
Summary: Many Cu oxide/TiO2 p-n nanojunctions were fabricated by adding n-type TiO2 layers to the fabrication method of p-type Cu oxide nanowires. The presence of p-n nanojunctions at the Cu oxide/TiO2 interface was analyzed through current-voltage and electrochemical impedance measurements. The electrical characteristics depended on the thickness of the TiO2 passivation layer, indicating the conduction through the Cu oxide grain surface, Cu oxide/TiO2 interface, and Cu oxide nanowires.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Paul Chassagne, Patrick Garrigue, Alexander Kuhn
Summary: Asymmetric modification of particles is a significant challenge in surface chemistry. This approach has potential applications in various fields including materials science, catalysis, self-assembly and drug delivery. However, there is currently a lack of straightforward synthesis methods for complex objects of this nature. In this study, bipolar electrochemistry is utilized to modify particles with different metal patches at predefined positions, allowing for highly controlled modifications in solution.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Analytical
Mohamad Mohsen Momeni, Parisa Zeinali
Summary: Iron doped TiO2 nanotube array films were synthesized by a facile method, followed by electrodeposition of silver to obtain Ag/FeTNTs composite films with improved photocathodic protection performance. The composite films were capable of effectively protecting stainless steel under light irradiation, indicating efficient photoelectrochemical cathodic protection.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Ri Chen, Igor Zhitomirsky
Summary: Composite Mn3O4-graphene electrodes were fabricated using different colloidal processing methods for energy storage in thin film and bulk supercapacitors. The use of the versatile co-dispersing, charging, binding, and film-forming agent PAZO was highlighted for the successful fabrication of advanced inks and suspensions. The electrodes exhibited good capacitive behavior at low impedance, making them promising for energy storage applications.
Article
Chemistry, Physical
Qiannan He, Wangping Sheng, Ming Zhang, Guodong Xu, Peipei Zhu, Huotian Zhang, Zhaoyang Yao, Feng Gao, Feng Liu, Xunfan Liao, Yiwang Chen
Summary: This study demonstrates the impact of DIO on the crystallinity of IT-4F, introduces a new efficiency-determining factor, and shows that a more balanced CCLpolymer/CCLacceptor leads to improved charge mobility and better performance of OSCs.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Hassan Alamgholiloo, Shahram Nazari, Esrafil Asgari, Amir Sheikhmohammadi, Bayram Hashemzadeh, Naser Ghasemian, Mohammad Bigdeloo, Ali Ehsani
Summary: Designing Z-scheme heterojunction materials is crucial for efficient photocatalysis in environmental remediation. In this study, a novel TiO2/ZnO@MCM-41 heterojunction photocatalyst was designed for degrading organic dyes and exhibiting antibacterial activity. The mechanism of organic dyes degradation involves hydroxyl radicals and superoxide anion. These findings open up new possibilities for water treatment and remediation.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Xiaonan Wu, Youjin Gong, Bingjun Yang, Zhenghao Mao, Zhaotong Yan, Chen Su, Shunshun Xiong, Xinggui Long, Xiaolin Wang
Summary: The study focuses on the development of high-performance chemiresistive gas sensors at room temperature by combining MXene with SMO. The SnO2-TiO2-Ti3C2Tx heterostructure sensor exhibits excellent sensitivity, selectivity, and stability for NO2 detection. The improved sensing performance is attributed to the synergic effects of three phases, which form functionalized surfaces and multiple-type heterojunctions, resulting in enhanced electrical transduction function.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Menghan Yu, Nan Wang, Kuo Lin, Dongxue Song, Jie Chen, Teng Liang, Jianhui Sun, Kai Pan, Honggang Fu
Summary: A lead-free double perovskite Cs2AgBiBr6 nanocrystal/mesoporous black TiO2 composite was prepared and applied for photocatalytic selective oxidation of benzyl alcohol to benzaldehyde at normal temperature and pressure. The composite exhibited a conversion rate of 75% and selectivity of 99%, surpassing those of single Cs2AgBiBr6 nanocrystals and black TiO2. The formation of a Z-type heterogeneous structure between Cs2AgBiBr6 nanocrystals and black TiO2 effectively promoted the separation and transfer of electrons and holes, leading to excellent photocatalytic activity. Carbon-centered radicals were identified as key intermediates during the catalytic process of benzyl alcohol dehydrogenation. This work provides practical suggestions for the fabrication of benzyl alcohol selective oxidation photocatalysts.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Ceramics
Antia Villamayor, Thomas Pomone, Sergio Perero, Monica Ferraris, Victoria Laura Barrio, Eva G-Berasategui, Peter Kelly
Summary: High photocatalytic activity layers were obtained by combining a TiO2 nanostructured coating support with NiO layers synthesized by direct current (DC) magnetron sputtering. The TiO2 crystallinity was improved through the optimization of sputtering process parameters. The formation of a p-n heterojunction between the TiO2 and NiO layers significantly enhanced the degradation rates of methylene blue under UV light.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Jose L. Bott-Neto, Thiago S. Martins, Osvaldo N. Oliveira, Frank Marken
Summary: This study presents a PEC platform based on TiO2 electrodeposition onto printed carbon electrodes, which eliminates the need for heat treatment. The resulting electrodes show higher photocurrents and improved sensitivity and selectivity for detecting ascorbic acid. The use of brookite TiO2 nanocrystals allows for the production of miniaturized devices for sensitive, selective PEC (bio)sensors.
APPLIED SURFACE SCIENCE
(2023)
Article
Environmental Sciences
M. L. Aruna Kumari, L. Gomathi Devi, Gilberto Maia, Tse-Wei Chen, Nabil Al-Zaqri, M. Ajmal Ali
Summary: TiO2, ZnO, and SnO2 metal oxides were synthesized and heterojunctions were fabricated by combining TiO2 with either ZnO or SnO2 in a 1:1 ratio using mechanochemical ball milling process. The ternary heterojunctions showed enhanced photocatalytic activity, with TiO2(A)/TiO2(R)/ZnO heterojunction attributed to the formation of Ti3+-V-o defect states leading to efficient charge carrier separation. The ball milling process resulted in severe crystal deformation in TiO2 and ZnO lattices, creating crystal lattice distortion and defects due to valency mismatch between Ti4+ and Zn2+.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Physical
Ying-hai Lyu, Feng Wei, Tingting Zhang, Li Luo, Yeye Pan, Xueqi Yang, Hao Yu, Shixue Zhou
Summary: The study found that anatase TiO2 has better antibacterial effect than rutile, and there is a synergistic effect between these two polymorphs. The Ag3PO4/TiO2 heterojunctions not only exhibit significant bactericidal activity but also almost completely destroy high concentration bacterial cells. E. coli is more sensitive to center dot O-2(-) radicals and h(+) during photocatalytic sterilization.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Linping Yu, Long Chen, Qizhi Chen, Luli Feng, Ziyi Xu, Bo Nan, Xiyue Kang, Yuehui He
Summary: This study successfully fabricated a Ni-Cu alloy foil with a thickness of 12.0 micrometers using electrodeposition combined with vacuum sintering. The alloy foil showed excellent corrosion resistance and defect-free surface, providing new possibilities for the future development of integrated electronic or medical devices.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Elena Monaico, Eduard Monaico, Veaceslav V. Ursaki, Ion M. Tiginyanu
Summary: This paper demonstrates the site-selective deposition of Pt and Au nanodots and nanotubes on porous InP templates using pulsed electroplating. The uniform deposition of the metal along the pore length was achieved by optimizing the pulse parameters. The results also highlight the importance of effective electrolyte refreshing and avoiding its depletion in pores during the electroplating process. Additionally, the proposed technology can be applied to the preparation of metal nanostructures on porous oxide templates.
Article
Chemistry, Physical
Yuxin Xiang, Yi He, Wenwen Tang, Hongjie Li, Yihan Zhang, Ruxia Song, Bo Liu, Yahui He, Xiao Guo, Ze He
Summary: The study demonstrates that the superhydrophobic composite coating fabricated with simple surface treatment and the addition of TiO2 nanoparticles can significantly improve hardness and wear resistance, while maintaining a good water contact angle. The composite coating shows excellent corrosion resistance and abrasion resistance, with broad industrial application prospects.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Lee Loong Wong, Kia Chai Phuah, Ruoyu Dai, Haomin Chen, Wee Shin Chew, Stefan Adams
Summary: Solid-state fast ionic conductors are of great interest for developing safer, high-performance energy conversion systems. High-throughput computational screening methods can accelerate materials design, while the new automated pathway analysis tool BVPA simplifies the analysis of ion transport properties in candidate materials. The new dopant predictor automatically suggests suitable substitutional dopants for candidate systems.
CHEMISTRY OF MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Jian Jin, Jun Su, Chengjie Xiang, Bo Xu, Kaiqi Zhao, Hongyun Li, Lidong Sun
Summary: Efficient extraction of crude oil is important in both energy and environmental fields, and a new method has been developed using titanium foams coated with anodic TiO2 nanotube arrays to achieve high separation efficiency for ultralow-concentration crude oil-in-water emulsions.
SCIENCE CHINA-MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Jian Jin, Hongyun Li, Kaiqi Zhao, Jun Su, Lu Xia, Xiaohu Yuan, Guangming Jiang, Bo Xu, Lidong Sun
Summary: Oil/water separation is a crucial process in various industries. This study focuses on the role of chain length in the separation of alkane-in-water emulsions. It is found that longer chain length leads to decreased separation efficiency. Superhydrophilic channels are effective in separating short-chain alkanes with high efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Thermodynamics
Yuheng Shang, Bofeng Bai, Yu Hou, Xin Zhong, Lidong Sun
Summary: The influence of surface properties on the dynamics and freezing of an impact water droplet is investigated. Three distinct icing paradigms are identified, with the interior freezing front occurring first (IFF) being favored by high impact velocities and low surface temperatures. The transition from IFF to other paradigms occurs with decreasing impact velocity and/or increasing surface temperature. The small difference in thickness between the central and peripheral liquid and the large temperature difference between the droplet and liquid-substrate interface contribute to the interior freezing front occurring prior to the exterior one.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Multidisciplinary Sciences
Kaiqi Zhao, Lidong Sun
Summary: This study proposes a universal equation based on liquid mass to calculate the contact angle inside a capillary tube, and verifies its validity through experiments. The method is not affected by the transparency, wettability, or material of the capillary tube, providing a new and highly sensitive in situ method for evaluating capillary tubes. The study provides a theoretical basis for investigating heat and mass transfer under spatial limitation with well-defined surfaces in portable devices, flexible electronics, etc.
ADVANCED THEORY AND SIMULATIONS
(2022)
Article
Engineering, Environmental
Wei Li, Honghao Zhou, Kaiqi Zhao, Jian Jin, Xue Chen, Muhammad Wakil Shahzad, Yinzhu Jiang, Omar K. Matar, Sheng Dai, Ben Bin Xu, Lidong Sun
Summary: The creation of drag-reducing surfaces in deformed tubes is crucial for thermal management, energy, and environmental applications. However, customizing the surface structure and wettability inside slim and complicated deformed tubes remains a challenge. This study presents an electrochemical anodization strategy to achieve uniform and superhydrophobic coating of TiO2 nanotube arrays on the inner surface of deformed/bend titanium tubes.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Electrochemistry
Jun Su, Hongyun Li, Jian Jin, Dingyin Yin, Lidong Sun
Summary: A percolative anodization method was developed to decorate the microchannels of porous metals with uniform and conformal TiO2 nanotube coatings. By optimizing the solvent viscosity, superwetting nanotube coatings were achieved throughout the microchannels. The mechanism of percolative anodization was investigated, and a key parameter K value was introduced to control the anodization process.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Review
Chemistry, Applied
Wenhui Yao, Liang Wu, Lidong Sun, Bin Jiang, Fusheng Pan
Summary: This review provides an overview of the recent progress and applications of slippery liquid-infused porous surfaces (SLIPS) in anti-icing, anti-corrosion, antifouling, and surface omniphobicity. It discusses the bio-inspired design of the SLIPS system and various fabrication strategies involving liquid or solid lubricants on surfaces with different wetting properties. The typical applications of SLIPS, including oil/water separation, anti-icing, anti-fouling, and anticorrosion, are summarized and compared, and the future perspectives are discussed based on the latest studies.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Materials Science, Multidisciplinary
Jun Su, Jiaye Ye, Zhenyu Qin, Lidong Sun
Summary: In this study, an ultrathin polytetrafluoroethylene (PTFE) film was deposited onto Nafion substrates using radio frequency magnetron sputtering to form PTFE@Nafion composite membranes. The PTFE layer improved the dimensional stability and ion selectivity of the Nafion membranes, resulting in better self-discharge property and discharge capacity retention in the VRFB single cell.
Article
Chemistry, Physical
Stefan Adams
Summary: In this study, a simple topological model and an empirical site occupancy dependence of migration energies were used to achieve semi-quantitative agreement with experimental data in lithium-stuffed garnet structures. The approach provides computational guidance for further optimization of the ionic conductivity in lithium-stuffed garnets.
Article
Materials Science, Coatings & Films
Bingyuan Yang, Yanlong Ma, Haisheng Wu, Zhaoyuan Liang, Yu Li, Liang Wu, Lidong Sun
Summary: The corrosion resistance of the anodized AA2099-T83 Al-Cu-Li alloy can be improved by post-treatment with a lithium nitrate-based solution. Under optimized conditions, the treated alloy can withstand a certain period of neutral salt spray test. The improved corrosion resistance is attributed to the sealing effect of the formed pseudo-boehmite, boehmite and/or layered double hydroxides in the anodic film. Additionally, the post-treated alloy exhibits self-healing capacity, as demonstrated by SVET analysis.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Yuemeng Li, Chen Li, Xin Zhang, Yanqing Wang, Yonghao Tan, Shuai Chang, Zhe Chen, Gangwen Fu, Zongkui Kou, Adams Stefan, Xi Xu, Jun Ding
Summary: Additive manufacturing of three-dimensional metals for energy generation and storage has attracted great interest. This study presents a new method for achieving complex metallic structures via the digital light process of metal precursors. The method allows for the synthesis of morphology-tunable and geometrically complex metals, alloys, metal oxides, or multi-material components. Two potential applications of 3D-printed copper are demonstrated in the electrochemical field.
APPLIED MATERIALS TODAY
(2022)
Article
Materials Science, Coatings & Films
Jiahao Wu, Haisheng Wu, Liang Wu, Wenhui Yao, Yanning Chen, Lidong Sun, Yanlong Ma, Bin Jiang, Jingfeng Wang, Andrej Atrens, Fusheng Pan
Summary: This paper presents the process of preparing a phosphoric-acid thin anodic oxide composite film on an aluminum alloy foil. The film's nano-pores were sealed using electrodeposited silane doped with Y3+. The resulting composite film showed good corrosion resistance and could provide long-term protection to the aluminum substrate.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Physical
Stefan Adams, Ruoyu Dai, Maxim Avdeev, Seung-Joo Kim, Rayavarapu Prasada Rao
Summary: In this study, LiTa2PO8 was prepared by solid-state synthesis, and its lithium distribution, ionic conductivity, structural stability, and total conductivity were investigated. Temperature-dependent conclusions were drawn from experimental and simulation analyses, achieving high density and stable conductivity in experiments. Additionally, characteristics of conductivity were studied through spark plasma sintering.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Sandeep Kumar Marka, Shaikshavali Petnikota, Mogalahalli Venkatashamy Reddy, Stefan Adams, Vadali Venkata Satya Siva Srikanth
Summary: GeO2 and GO were reduced to Ge and rGO respectively by a solid-state reduction process, forming Ge/rGO composite. Ge clusters were observed on the rGO graphene layers through transmission electron microscopy. The formation of Ge/rGO composite was confirmed by various analysis methods. The specific surface area, pore volume, and pore size of Ge/rGO composite were measured. The composite showed excellent reversible capacity, rate capability, and cycle life as an anode material in Li-ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
