Article
Nanoscience & Nanotechnology
Robinson Aguirre Ocampo, Felix Echeverria Echeverria
Summary: Homogeneous nanotube coatings were successfully formed on titanium curved surfaces by using a specific electrolyte.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2021)
Article
Optics
Bogdan-Petrin Ratiu, Balthazar Temu, Cristian Messina, Oumaima Abouzaid, Samir Rihani, Graham Berry, Sang Soon Oh, Qiang Li
Summary: This study proposes a photonic crystal laser with a curved cavity formed by InGaAs nanowires grown directly on silicon-on-insulator, using catalyst-free, selective nano-epitaxy. The introduction of curvature does not degrade the quality factor of the cavity, providing another degree of freedom for designing low-footprint multiwavelength photonic crystal nanowire lasers.
Article
Nanoscience & Nanotechnology
Qi Jin, Wei Wen, Shilie Zheng, Rui Jiang, Jin-Ming Wu
Summary: Nanostructure modulation is effective for high performance TiO2-based gas sensors. By using a wet-chemistry route to precipitate directly branched TiO2 nanowire arrays on alumina tubes, the sensors exhibit enhanced response due to the unique porous architecture and quasi-aligned nanostructure. The phase junctions between the backbone and branch of the branched TiO2 nanowire arrays help resistance modulation, leading to excellent sensor properties.
Article
Materials Science, Coatings & Films
Salih Durdu, Muharrem Sancak, Emine Yalcin, Metin Usta, Eyup Akagunduz, Atilgan Altinkok
Summary: Highly ordered TiO2 nanotube arrays were prepared on Ti6Al4V substrate through anodic oxidation technique, showing good surface roughness and thickness distribution, as well as higher hydrophobicity compared to uncoated titanium surface. The hardness and elastic modulus of TiO2 nanotube surfaces were close to bone structure, with good adhesion properties between similar to 2.2 N and similar to 4.6 N.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Physical
Hemin Zhang, Chang Won Ahn, Jin Yong Park, Jung-Woo Ok, Ji Yeong Sung, Jong Sung Jin, Hyun Gyu Kim, Jae Sung Lee
Summary: Hybrid microwave annealing (HMA) is proposed as an alternative postannealing process for recovering the damaged structure of a nitrogen-implanted TiO2 photoanode. Compared to conventional thermal annealing (CTA), HMA provides advantages of transforming interstitial N-N states, preserving ion-implanted nitrogen, and alleviating lattice strain, resulting in improved photocurrent density and IPCE.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Pejman Hajipour, Abbas Bahrami, Maryam Yazdan Mehr, Willem Dirk van Driel, Kouchi Zhang
Summary: This study investigated the photocatalytic characteristics of Ag nanowire/TiO2 and Ag nanowire/TiO2/graphene oxide nanocomposites. Through direct coating of TiO2 particles on silver nanowires, successful deposition of TiO2 nanoparticles on the surface of Ag nanowires was confirmed. The synthesized Ag nanowire/TiO2/graphene oxide nanocomposite exhibited superior photocatalytic activities in decomposing Rhodamine B.
Article
Thermodynamics
Javaria Akram, Noreen Sher Akbar, Monairah Alansari, Dharmendra Tripathi
Summary: This study focuses on the fluid flow and heat transfer characteristics of 10 W40-based titanium dioxide nanofluid subject to electroosmotic forces and peristaltic propulsion in a curved microchannel. The unique aspect of this study is the inclusion of variable thermophoretic and diffusion parameters in the modified Buongiorno model. The results indicate that maintaining a larger temperature difference strengthens buoyancy forces and facilitates fluid motion, but also leads to a decrease in the Nusselt number. It is also found that the temperature of the nanofluid decreases for a larger curvature parameter, corresponding to a less curved channel. Additionally, the electroosmotic flow parameters have a progressive impact on velocity and convective heat transfer.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Nanoscience & Nanotechnology
Huaze Wu, Takeshi Ueno, Kosuke Nozaki, Huichuan Xu, Yuki Nakano, Peng Chen, Noriyuki Wakabayashi
Summary: This study utilized anodization as a novel approach to immobilize lithium ions on a titanium surface and evaluated the changes in surface characteristics. The results showed that the surface charge characteristics were enhanced on the 3V-anodized surface, leading to increased adsorption of extracellular matrix proteins and improved attachment of osteoblast cells. This study suggests that anodization could be an effective method to promote osseointegration by modifying the surface charge characteristics and allowing for enhanced biological adhesion.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Thermodynamics
Lingfeng Xuan, Yancheng Wang, Jinwei Lan, Kai Tao, Caiying Zhou, Deqing Mei
Summary: This study presented an MEA with cathode ordered catalyst layer to improve mass transfer characteristics and durability. TiO2 nanowire arrays were prepared on the porous surface of carbon paper and the catalyst was uniformly applied by ultrasonic spraying. The results showed that the peak power of the cathode ordered MEA can reach 539.5 mW/cm2 at a platinum loading of 0.21 mg/cm2. Comparing with other processes, the combination of ultrasonic spraying and cathode ordered structures is a promising solution for developing efficient and stable MEA.
Article
Nanoscience & Nanotechnology
Mostafa Shooshtari, Alireza Salehi, Sten Vollebregt
Summary: This study investigates the influence of temperature and humidity on gas sensors based on titanium dioxide nanowires, finding the optimal operating temperature to be around 180 degrees Celsius. Different nanowire morphologies have their own optimal operating temperatures. Additionally, the resistance of sensors increases at higher relative humidity, while the response to ethanol vapor gradually increases from 10% to 60% RH but decreases from 60% to 90% RH.
Article
Chemistry, Physical
Mohammad Mamunur Rashid, Barbara Simoncic, Brigita Tomsic
Summary: TiO2 has been recognized as one of the most attractive nanomaterials for the functionalization of textiles due to its unique properties. Chemical and physical modification of textile fibers with TiO2 nanoparticles and structures offer various functional properties such as self-cleaning, antimicrobial activity, UV protection, hydrophobicity, thermal stability, flame retardancy, and electrical conductivity. New strategies for enhancing visible light photocatalytic activity through TiO2 surface modification are discussed in this review, along with future research perspectives in this area.
SURFACES AND INTERFACES
(2021)
Article
Engineering, Electrical & Electronic
Jiahua Li, Jizhuang He, Sisi Li, Yin Ren, Ke Ding, Shulin Xing, Yunfei He, Rongli Gao, Chunlin Fu
Summary: In this study, a TiO2/BFO core-shell nanowire array structure was constructed to address the low photoelectric conversion efficiency problem of BiFeO3 (BFO)-based photovoltaic (PV) devices. The TiO2/BFO core-shell nanowire arrays, prepared by hydrothermal and sol-gel methods, exhibited significantly enhanced light absorption performance and improved conversion efficiency of 0.1177% compared to previously reported BFO-based ferroelectric photovoltaic (FEPV) films. The intrinsic mechanism of PV enhancement was elucidated by analyzing optical absorption, carrier lifetime, and energy band structure, demonstrating the potential applications of transport material/ferroelectric material core-shell nanowire array structures in PV devices.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Bingyu Lei, Neil Robertson
Summary: The immobilised TiO2 mesocrystals were prepared on sanded glass substrates via a solution synthesis of immobilised precursor, followed by a thermal treatment triggering a topotactic conversion reaction. The obtained mesocrystals possessed anatase nanoparticles with high surface area and co-exposed {10 1}/{0 0 1} facets, as well as large overall particle size and strong binding to the substrate inherited from the immobilised precursor. These unique structural features make the material a promising candidate as a highly efficient and separable photocatalyst. The thermal treatment parameters were also shown to be crucial for adjusting the structural or surface properties and thus the photocatalytic performance of the immobilised TiO2 mesocrystals.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Eugene A. Koreshin, Mikhail Rybin
Summary: In this study, a design of an interlaced wire medium with a quasicrystalline lattice based on fivefold rotation symmetry Penrose tiling is proposed. The transport properties of this structure are investigated, demonstrating two transport regimes: a propagation regime related to low frequencies, and a localization regime exclusive for aperiodic structures. The localization regime shows promise for applications such as engineering effective multichannel devices for telecommunication and imaging systems.
Article
Chemistry, Physical
Jae Rok Shin, Jae Uk Hur, Gye Seok An
Summary: Composites or core-shell structures of magnetite (Fe3O4) and titanium dioxide (TiO2) have been widely used in various applications. TiO2 coatings were obtained using an aqueous process, and the efficiency of TiO2 particle adsorption was enhanced by treating the surface of Fe3O4. The adsorption of TiO2 particles was confirmed by various analyses, and the suitability of Fe3O4-TiO2 particles for DNA purification was verified by agarose gel electrophoresis tests.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)