Article
Materials Science, Ceramics
HyukSu Han, Sung- Moon, Seunggun Choi, Enkhbayar Enkhtuvshin, So Jung Kim, Sun Young Jung, Nguyen Thi Thu Thao, Taeseup Song
Summary: In this study, plasma treatment was utilized for surface engineering of TiO2 nanotubes, creating porous and partially amorphized surface and effectively modulating the electronic configuration for improved photocatalytic activity. The enhanced charge transport and light-absorption in TiO2 nanotubes after ion plasma treatment, in combination with nanoporous structure, leads to significantly higher photocatalytic efficiency, potentially offering a pathway for designing next-generation high-performance photocatalysts.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Multidisciplinary
Wahyudiono, Hiroki Kondo, Siti Machmudah, Hideki Kanda, Yaping Zhao, Motonobu Goto
Summary: The study demonstrated the utilization of an electric field generated by high voltage discharge plasma over a liquid water surface containing glycine compound to synthesize TiO2 nanoparticles. The applied voltages, pulse numbers, and repetition rates significantly influenced the decomposition reaction of glycine compounds and electrode erosion. The UV-vis spectra and HRTEM images confirmed the formation of TiO2 nanoparticles and TiC as nanoparticle products, suggesting that this process has potential for advanced nanoparticle synthesis technology.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Lauri Palmolahti, Harri Ali-Loytty, Markku Hannula, Jesse Saari, Weimin Wang, Antti Tukiainen, Kimmo Lahtonen, Mika Valden
Summary: This study investigated the effect of growth temperature on precursor traces in ALD TiO2 films and thermally-induced processes, demonstrating that increasing growth temperature reduced N bearing precursor traces and made TiO2 more easily reducible. Vacuum annealing of TiO2 influenced crystallization and defect formation, with different nitrogen content resulting in different crystalline forms.
Article
Spectroscopy
Iria Rujido-Santos, Paloma Herbello-Hermelo, Maria Carmen Barciela-Alonso, Pilar Bermejo-Barrera, Antonio Moreda-Pineiro
Summary: This article introduces a method for pre-treatment and characterization of nanoparticles from complex matrices, and applies it to commercial moisturizers. The use of tip sonication and single particle ICP-MS provides information about particle concentration and size, while transmission electron microscopy analysis allows for qualitative assessment.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2022)
Article
Materials Science, Textiles
Preeti Arya, Subhas Ghosh
Summary: A study was conducted to develop a wrinkle-resistant finish using a combination of three carboxylic acids at various pH and concentrations on linen fabric. The results showed significant wrinkle resistance for treated samples, with factors such as weight gain, carboxyl group content, wrinkle recovery angle, and appearance rating influencing the finish application. Additionally, the study analyzed the reduction in free OH groups in the linen cellulosic chains using FTIR spectroscopic analysis.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Materials Science, Coatings & Films
Fatih Sargin, Garip Erdogan, Kursat Kanbur, Ahmet Turk
Summary: Orthopedic implants are widely used in modern medicine to enhance the quality of human life, with PEEK emerging as a high-performance alternative to metallic implants. Coating PEEK implants with bioactive materials such as HA has been shown to improve their bioactivity and osteointegration behavior, effectively addressing the shortcomings of PEEK's biological inertness and low bioactivity.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
M. Coto, S. C. Troughton, P. Knight, R. Joshi, R. Francis, R. Kumar, T. W. Clyne
Summary: UV treatments are commonly used for pollutant removal in industrial water. Introducing a suitable photocatalyst can enhance energy efficiency by producing reactive oxygen species to degrade pollutants. TiO2 is a common photocatalyst for UV illumination, often created through Plasma Electrolytic Oxidation (PEO) of titanium substrates. High surface roughness and area on PEO samples enhance photocatalytic activity by disrupting fluid flow and increasing interaction between pollutants and the catalytic surface.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Jhongryul Yoo, Hongin Jeong, Seo Kyung Park, Sungho Park, Je Seung Lee
Summary: This study synthesized high-purity TiO2 nanoparticles and deposited them on an electrode to fabricate a DNA biosensor. The structural and chemical properties of the nanoparticles were analyzed, and the concentration of target DNA was quantitatively analyzed using a picoammeter. Specificity experiments confirmed the ability of the biosensor to discriminate between different nucleotide sequences.
Article
Multidisciplinary Sciences
Liangbo Xie, Pengfei Wang, Yi Li, Dongpeng Zhang, Denghui Shang, Wenwen Zheng, Yuguo Xia, Sihui Zhan, Wenping Hu
Summary: The authors propose a nitrogen doping strategy for selective electrocatalytic singlet oxygen production. By using this strategy, the selectivity and activity of O-1(2) production can be significantly improved.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Qianli Cai, Xinglong Li, Ertao Hu, Zhongyue Wang, Peng Lv, Jiajin Zheng, Kehan Yu, Wei Wei, Kostya (Ken) Ostrikov
Summary: This study demonstrates substantially enhanced Na+ ion transport and charge transfer kinetics by constructing a non-rectifying titanium carbonitride/nitrogen-doped TiO2 heterostructure, leading to excellent electrochemical performance in lithium-ion batteries and sodium-ion batteries.
Article
Chemistry, Physical
Alejandra Romero-Moran, Jose L. Sanchez-Salas, Joel Molina-Reyes
Summary: The study established the influence of the crystalline phase and agglomeration degree of TiO2 nanoparticles on photocatalytic hydroxyl radical formation and bacterial inactivation in TiO2/SiO2 composite coatings. A relationship between hydroxyl radicals' formation and charge carrier transfer mechanism between defect levels in SiO2 and TiO2 embedded nanoparticles was established through a simple spectroscopic method. This correlation complements the lack of mechanisms behind the photocatalytic activity in TiO2/SiO2 composites.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Kehan Yu, Xinglong Li, Haoyu Zhao, Chen Ma, Zhongyue Wang, Peng Lv, Ertao Hu, Jiajin Zheng, Wei Wei, Kostya (Ken) Ostrikov
Summary: Interfaces of metal oxide heterojunctions have intriguing physical properties that offer potential for novel applications. A new plasma-enabled fabrication method has been developed to create a TiO2/Ti3O4 hetero-phase bilayer with a high-concentration electron gas that condenses into a 2D electron liquid (2DEL) at room temperature. The 2DEL suppresses electron-phonon scattering, enabling adiabatic electron transport, and shows promise for low-loss electronics, plasmonics, and hot electron utilization.
Article
Materials Science, Multidisciplinary
Lijun Wang, Zhengxu Li, Takaomi Itoi, Hiroyuki Yoshida, Yun Lu
Summary: The control of nanostructures is crucial for enhancing the thermoelectric properties of materials. The study found that the grain growth and phase transformation of 7 nm anatase TiO2 occurred more easily, and the rutile phase content increased with increasing heat treatment temperature. The fabrication of nanostructured compacts using spark plasma sintering resulted in a lower thermal conductivity, with the phonon thermal conductivity accounting for a dominant proportion of the total thermal conductivity.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Environmental Sciences
Mohammad Rezaei Ardani, Fathin Azwina, Tan Yee Wern, Siti Fatihah Ramli, Sheikh Abdul Rezan, Hamidi Abdul Aziz, Abdul Rahman Mohamed
Summary: This study investigated the coagulation performance of titanium tetrachloride (TiCl4) for leachate treatment and preparation of titanium oxide (TiO2) from generated sludge through calcination process. The results showed that TiCl4 and chitosan addition can significantly reduce suspended solids and chemical oxygen demand. The prepared TiO2 exhibited different crystal phases and band gaps at different temperatures.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Physical
Key Simfroso, Shena Ramyr Cabo, Romnick Unabia, Angelito Britos, Pawel Sokolowski, Rolando Candidato
Summary: This work reports the microstructural characteristics and phase composition of solution precursor plasma-sprayed (SPPS) titania-based coatings using a catalyst-free precursor. The thermal behavior of the solution precursor changed with increasing molar concentration. The coatings exhibited a porous structure at lower concentrations and dense coating formation with micropores at higher concentrations.
Article
Chemistry, Multidisciplinary
Alan Yiu Lun Tang, Cheng Hao Lee, Yan Ming Wang, Chi Wai Kan
Article
Chemistry, Applied
Yao-hui Liu, Chester Kin-man To, Mei-ki Ngai, Chi-wai Kan, Hong Chua
COLORATION TECHNOLOGY
(2019)
Review
Chemistry, Applied
Alan Y. L. Tang, Chi-wai Kan
COLORATION TECHNOLOGY
(2020)
Article
Nanoscience & Nanotechnology
Jinhao Xu, Xuanxuan Du, Binjie Xin, Chiwai Kan, Yaqian Xiao, Zhuoming Chen, Mengjuan Zhou, Qingshuai Yan
Summary: This study developed coaxial fibers that can absorb moisture and be heated by sunlight, effectively managing fabric comfort. The material's excellent moisture absorption and evaporation properties, high surface temperature, and strong UV protection factor make it ideal for providing a comfortable microenvironment for the human body.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Ya-Qian Xiao, Chi-Wai Kan
Summary: This review article examines the mechanism, methods, applications, challenges, and future development trends of directional water transport (DWT) textile materials. The study highlights the importance of moisture management in textile products for human comfort.
Article
Materials Science, Multidisciplinary
Ya-Qian Xiao, Chi-Wai Kan
Summary: This article provides a timely and comprehensive review of the application of 3D printing technology in the textile and fashion industries. The article introduces four methods for preparing textiles and summarizes three routes to use 3D printing technology in textile manufacturing. Furthermore, it discusses the applications of this technology in fashion design, functional garments, and electronic textiles, as well as the challenges and prospects it faces.
Article
Materials Science, Multidisciplinary
Wen-Yi Wang, Jia-Chi Chiou, Wan-Xue Chen, Chi-Wai Kan, Theo Y. C. Lam, Huawen Hu
Summary: Poly(hexamethylene biguanide) (PHMB) has been found to have excellent flocculation performance in the removal of anionic dyes from aqueous solution. Optimal dosage of 50 to 70 mg/L PHMB effectively removes two model anionic dyes over a wide range of pH values with high color removal efficiency and low turbidity. In addition, the addition of inorganic salts, such as sodium chloride and sodium sulphate, enhances the flocculation performance of PHMB, suggesting a salt-intensive effect.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Textiles
Alan Yiu Lun Tang, Cheng Hao Lee, Yanming Wang, Chi-Wai Kan
Summary: This study aimed to examine the feasibility of using a poly(ethylene glycol) (PEG)-based reverse micellar dyeing system for dyeing cotton fabric with hot type trichloropyrimidine (TCP)-based reactive dyes and evaluate the energy-saving potential. The experimental results showed that dyeing fabrics in the reverse micellar system at 90 degrees Celsius achieved higher color yield compared to the conventional water-based system at the same temperature. Further experiments showed that using the reverse micellar system for dyeing cotton at 80 degrees Celsius provided comparable color yield to the conventional water-based system. The reverse micellar dyeing system caused no significant damage to cotton fibers and allowed for the recycling of octane.
JOURNAL OF NATURAL FIBERS
(2023)
Article
Materials Science, Textiles
Yiu Lun Alan Tang, Cheng Hao Lee, Chiu Yuk Chan, Yanming Wang, Chi-Wai Kan
Summary: This study investigated the reverse micellar dyeing of cotton woven fabrics using non-aqueous medium and alkyl polyglucoside-based nonionic surfactant (APG-based) with reactive dyes. The results showed that the APG reverse micellar method achieved higher color yield and better dye uptake compared to conventional water-based dyeing. The washing fastness, leveling, and color fading properties were comparable between the two methods. Hetero-bifunctional reactive dyes had the highest color yield, followed by homo-bifunctional reactive dyes and mono-functional reactive dyes. Mono-functional reactive dyes and homo-bifunctional reactive dyes had the best leveling properties in the non-aqueous dyeing medium.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Materials Science, Multidisciplinary
Long-Yi Ho, Chi-Wai Kan
Summary: This study conducted experimental investigation to assess the wrinkle-resistance performance of resin-treated 100% cotton light-weight fabric. The results showed that resin finishing improved the wrinkle properties and dimensional stability but reduced the tearing strength of the fabric.
Article
Polymer Science
Sui-Lung Yim, Jessie Wing-Yi Cheung, Iris Yuk-Ching Cheng, Lewis Wai-Hong Ho, Suet-Yee Sandy Szeto, Pinky Chan, Yin-Ling Lam, Chi-Wai Kan
Summary: Healthcare workers in hospitals are at risk of infection from body fluids and bacteria. Traditional textile products provide a favorable environment for bacterial growth, increasing the risk of transmitting infectious diseases. This study found that healthcare uniforms treated with PHMB displayed durable antimicrobial properties and remained efficient after prolonged use and laundering cycles in a hospital environment. The use of PHMB-treated uniforms may reduce the transmission of infectious diseases in hospitals.
Article
Materials Science, Composites
Kam-Che Lui, Nuruzzaman Noor, Chi-Wai Kan, Xungai Wang
Summary: This study developed a new PGT-SGS composite using pre-strained screen printing, which combined pressure garment therapy and silicone gel sheeting for scar management. The 3D channel structure allowed trauma-free active-fluid transport.
JOURNAL OF COMPOSITES SCIENCE
(2023)
Article
Polymer Science
Yiu Lun Alan Tang, Shixin Jin, Cheng Hao Lee, Ho Shing Law, Jiali Yu, Yanming Wang, Chi-wai Kan
Summary: This study investigates the feasibility of using biodegradable SAE non-ionic surfactant as a building block for the formation of reverse micelles, functioning as dye carriers for cotton fabric dyeing. The study optimized ten dyeing parameters and compared the properties of SAE-dyed samples with water-dyed samples. The results show that SAE-dyed samples have better performance than water-dyed samples.
Article
Materials Science, Multidisciplinary
Chi-Yuen Hui, Chi-Wai Kan, Kam-Hong Chau
Summary: Different concentrations of lithium perchlorate (LiClO4) were used in combination with various types of nanocarbons to create high-performing poly(ethylene oxide) (PEO)-based electrochemical double-layer (EDL) supercapacitors. The best results were achieved with a PEO:Li+ ratio of 100:1, resulting in a maximum current density of 1.84 mu A/cm(2) and a specific capacitance of 33.56 nF/cm(2) at a scanning rate of 100 mV/s and 40 Hz. Additionally, among the four types of nanocarbons tested, double-walled (DW) carbon nanotubes exhibited the highest performance with a maximum current density of 10.51 mu A/cm(2) and a specific capacitance of 32.798 nF/cm(2) at the same conditions, surpassing the performance of the control sample without any dopants.
Article
Chemistry, Multidisciplinary
Ishaq Ahmad, Chi-wai Kan, Zhongping Yao
