Article
Materials Science, Multidisciplinary
Guangri Jia, Ying Wang, Xiaoqiang Cui, Hengzhong Zhang, Jingxiang Zhao, Lu Hua Li, Lin Gu, Qinghua Zhang, Lirong Zheng, Jiandong Wu, Qiong Wu, David J. Singh, Weiwei Li, Lei Zhang, Weitao Zheng
Summary: The introduction of hydrogen into TiO2 greatly enhances its photocatalytic properties, leading to a 60 times enhancement of photocatalytic hydrogen evolution activity. Hydrogenated TiO2 with switchable defects is synthesized through a one-step wet-chemistry method and controlled annealing. The obtained hydrogenated TiO2 exhibits improved visible light absorption and efficient separation of photogenerated carriers, resulting in significantly enhanced photocatalytic activity.
Article
Chemistry, Physical
Min Chen, Jianhua Chen, Chuncheng Chen, Changbin Zhang, Hong He
Summary: The research shows that CuOx-rutile is more suitable for the oxidation of ammonia gas under visible light compared to CuOx-anatase, contrary to previous beliefs. Further analysis revealed that the interaction between CuOx and TiO2 differs significantly in different crystal phases, resulting in distinct directions of charge transfer.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Kang Li, Cong Sun, Zhiqiang Chen, Hongxia Qu, Huifang Xie, Qin Zhong
Summary: FeN-CDs/TiO2@CN photocatalyst exhibits excellent nitrogen fixation activity, attributed to efficient electron transfer from CDs to active centers, tight heterogeneous interfaces between carbon dots/TiO2 and graphic carbon nitride, and the coexistence of anatase and rutile TiO2. FeN-CDs is confirmed as the active site for nitrogen fixation, with a proposed mechanism for photo-induced charge separation and nitrogen photofixation on FeN-CDs/TiO2@CN.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Polymer Science
Tinoco Navarro Lizeth Katherine, Bednarikova Vendula, Kastyl Jaroslav, Cihlar Jaroslav
Summary: TiO2 aerogels doped with Ni, Co, Cu, and Fe were studied for their structure and photocatalytic activity in the decomposition of acid orange (AO7). The doped aerogels were evaluated and analyzed after calcination at 500°C and 900°C. XRD analysis showed the presence of anatase/brookite and rutile phases, along with other oxide phases from the dopants. SEM and TEM microscopy revealed the nanostructure of the aerogels, and BET analysis showed their mesoporosity and high specific surface area. Photocatalytic activity was assessed using UV spectrophotometry and photodegredation of AO7, with Ni-TiO2 and Cu-TiO2 aerogels calcined at 500°C exhibiting higher photoactivity coefficients than those calcined at 900°C.
Article
Materials Science, Multidisciplinary
Federica Ceriani, Luca Casanova, Luca Massimini, Andrea Brenna, Marco Ormellese
Summary: This research investigates the influence of two types of particles on the properties of PEO coatings on titanium. The study finds that coatings produced at a specific electrical condition exhibit a thicker and more corrosion-resistant layer, while other treatments affect the structure and performance of the coatings.
Article
Materials Science, Multidisciplinary
Fatemehsadat Moosavi, Alex Lemarchand, Cyrille Bazin, Maria Konstantakopoulou, Mathieu Fregnaux, Christophe Colbeau-Justin, Touraj Tavakoli Gheinani, Andrei Kanaev, Mehrdad Nikravech
Summary: Nanocomposite TiO2 coatings with mixed anatase-rutile crystalline polymorphs and strong adherence to glass substrates were prepared using a spray-plasma deposition method. The coating exhibited enhanced photocatalytic activity for cefixime antibiotic decomposition under UVA light illumination, and the activity significantly increased after the formation of the rutile phase, suggesting a synergistic effect of the two-component solids.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Lu Zhang, Xian Luo, Jian-Dong Zhang, Yong-Fu Long, Xin Xue, Ben-Jun Xu
Summary: In this study, Fe-doped TiO2 precursors were prepared and analyzed to investigate the effects of Fe doping on the phase transition of TiO2. Results showed that Fe increased the phase transition temperature from anatase to rutile and accelerated the transformation process. Additionally, the crystal phase transition kinetics of Fe-doped TiO2 was found to follow the JMAK model and was influenced by crystal defects.
Article
Chemistry, Multidisciplinary
V. V. Shymanovska, T. A. Khalyavka, E. V. Manuilov, T. A. Gavrilko, A. Aho, V. V. Naumov, N. D. Shcherban
Summary: The study comprehensively investigated the effect of surface Fe-doping on the structural, photocatalytic, and optical properties of TiO2. Fe3+ ions were adsorbed onto the TiO2 surface from diluted FeCl3 aqueous solutions, with higher efficiency on the anatase phase compared to the rutile phase.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Chemistry, Physical
Longxiao Yang, Ningdong Feng, Feng Deng
Summary: In this study, Al-doped TiO2 photocatalysts with optimized {001} facet structure were prepared, showing significantly enhanced photocatalytic performance. The formation of F-Ti2Al structure was confirmed by NMR and ESR experiments, and it was identified as the active site responsible for the improved photocatalytic performance.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Olufemi Olatidoye, Daria Thomas, Bishnu Prasad Bastakoti
Summary: A facile method of synthesizing mesoporous TiO2 thin films using polymeric micelles as a template is reported. The mesoporous TiO2 films showed enhanced photocatalytic activity due to increased surface area and rough surface around the pores. Photocatalytic testing demonstrated the effectiveness of the prepared mesoporous thin films in degrading dyes.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Oleksandr Shtyka, Viktar Shatsila, Radoslaw Ciesielski, Adam Kedziora, Waldemar Maniukiewicz, Sergey Dubkov, Dmitry Gromov, Andrey Tarasov, Jacek Rogowski, Andrey Stadnichenko, Petr Lazarenko, Roman Ryazanov, Malgorzata I. Szynkowska-Jozwik, Tomasz Maniecki
Summary: The photocatalytic activity of TiO2 is mainly determined by the desorption rate of reaction intermediates and final products, the specific surface area, and binding strength. Rutile exhibits higher photocatalytic activity than anatase/rutile mixtures due to its efficiency in the visible portion of the electromagnetic spectrum.
Article
Engineering, Environmental
Xiangyan Chen, Xin Peng, Longbo Jiang, Xingzhong Yuan, Jia Fei, Wei Zhang
Summary: In this study, a carbon-coated Ti3+- and Ov-doped A/R-TiO2 photocatalyst was successfully developed for the removal of antibiotics with high efficiency. The analysis on the effect of water matrix on the removal of TC indicated that the prepared materials exhibited good stability and repeatability in degrading antibiotics.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Carla Calabrese, Amelie Maertens, Alessandra Piras, Carmela Aprile, Leonarda Francesca Liotta
Summary: TiO2 nanomaterials were synthesized through a sol-gel method using titanium butoxide as a precursor, Pluronic F127 as a template, toluene as a swelling agent, and acidic water or ethanol as reaction solvents. The synthesis medium influenced the phase composition of the solids, with ethanol promoting dispersed anatase particles and water leading to a rutile phase. The photocatalytic activity of the samples was tested by the photodegradation of Rhodamine B.
Article
Chemistry, Physical
Ji Young Hwang, Gun-hee Moon, Bupmo Kim, Takashi Tachikawa, Tetsuro Majima, Seungwoo Hong, Kangwoo Cho, Wooyul Kim, Wonyong Choi
Summary: The generation of mobile free OH radicals on anatase through a reductive conversion of dissolved O2 is crucial in achieving the mineralization of non-adsorbing substrates, while surface trapped holes lead to the generation of surface-bound OH radicals on both anatase and rutile. Understanding the production pathway of OH radicals in photocatalysis will help optimize their generation for efficient photocatalytic oxidation of pollutants.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Anna Stepanova, Teddy Tite, Iryna Ivanenko, Monica Enculescu, Cristian Radu, Daniela Cristina Culita, Arpad Mihai Rostas, Aurelian Catalin Galca
Summary: Photocatalysis using TiO2 has shown promising results in degrading harmful pollutants. This study synthesized TiO2 powders via a hydrothermal method and analyzed its morphology and structure using various analysis techniques. The results demonstrated that TiO2 exhibited excellent photocatalytic performance in degrading dyes, with pH affecting the formation of TiO2 phases.
Article
Chemistry, Multidisciplinary
T. Soejima, Y. Katayama, S. Fujii
Article
Chemistry, Physical
Shin-ichi Naya, Yoshihiro Hayashido, Ryo Akashi, Kaoru Kitazono, Tetsuro Soejima, Musashi Fujishima, Hisayoshi Kobayashi, Hiroaki Tada
JOURNAL OF PHYSICAL CHEMISTRY C
(2017)
Article
Materials Science, Multidisciplinary
Yasuhiro Seguchi, Tetsuro Soejima
Article
Chemistry, Physical
Tetsuro Soejima, Kazuki Nishizawa, Ryosuke Isoda
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2018)
Article
Chemistry, Physical
Tetsuro Soejima, Kohei Takada, Seishiro Ito
APPLIED SURFACE SCIENCE
(2013)
Article
Chemistry, Multidisciplinary
Tetsuro Soejima, Yosuke Maru, Seishiro Ito
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2013)
Article
Chemistry, Physical
Tetsuro Soejima, Seisaku Oshiro, Yasuji Nakatsuji, Seishiro Ito
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2011)
Article
Chemistry, Multidisciplinary
Tetsuro Soejima, Ren-Hua Jin, Yuki Terayama, Atsushi Takahara, Takamasa Shiraishi, Seishiro Ito, Nobuo Kimizuka
Article
Chemistry, Multidisciplinary
Tetsuro Soejima, Yuta Amako, Seishiro Ito, Nobuo Kimizuka
Article
Chemistry, Multidisciplinary
Yoshihiro Nakamura, Tetsuro Soejima
Article
Chemistry, Multidisciplinary
Reki Takahashi, Musashi Fujishima, Hiroaki Tada, Tetsuro Soejima
Article
Chemistry, Multidisciplinary
Tetsuro Soejima, Haruki Inoue, Keigo Egashira, Yaozong Yan, Hiroaki Tada
Summary: A simple process has been developed to create single-crystalline beta-MnO2 nanowire arrays on a glass plate, which has a large surface area and functions as a highly active three-dimensional photothermal catalyst under near infrared light. The efficient light harvesting and heat confinement near the reaction field, along with the large surface area, contribute to its excellent performance.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Ryota Kojima, Yuga Ogino, Shin-ichi Naya, Tetsuro Soejima, Hiroaki Tada
Summary: Radial homomesocrystals consisting of rutile TiO2 nanorods were synthesized using TiO2 seed nanocrystals, which greatly reduced the synthesis temperature and time. The formation of these homomesocrystals involved the epitaxial generation of nanoneedle-like nuclei on the seed surface, the growth of TiO2 nanorods, and their radial self-assembling with the transformation of amorphous to rutile TiO2. Loading Au nanoparticles on these homomesocrystals resulted in higher visible-light activity for oxidation of organics compared to the usual Au/TiO2 nanoparticles, due to the formation of plasmonic hot spots near the edges and corners of the faceted Au nanoparticles and effective charge separation.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Physical
Miwako Teranishi, Shin-ichi Naya, Yaozong Yan, Tetsuro Soejima, Hisayoshi Kobayashi, Hiroaki Tada
Summary: The artificial photosynthesis of H2O2 from water and O-2 is a sustainable route for its production. Recent advancements have been made in the rate of reaction by using semiconducting organic polymer photocatalysts, but there is a need for robust inorganic photocatalysts. In this study, a photocatalyst consisting of a single Au particle and an interconnected cluster of SnO2 nanocrystals, modified with SbCl3, is presented. The photocatalyst shows stable production of H2O2 under visible-light irradiation, with high photocatalytic activity.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
